GLAXOSMITHKLINE PLC (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 1001 - Document - Document and Entity Information Network

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http://www.gsk.com/taxonomy/role/DocumentandEntityInformation
2 Implied Table Table

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3 Document and entity information [abstract] Abstract gsk:DocumentAndEntityInformationAbstract
4 Document Type Concept (Submission Type) For Period dei:DocumentType
5 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
6 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
7 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
8 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
9 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
10 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
11 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
12 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
13 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
14 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
15 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
16 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
17 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
18 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
19 1003 - Statement - Consolidated income statement Network

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http://www.gsk.com/taxonomy/role/StatementOfComprehensiveIncomeProfitOrLossByNatureOfExpense-320000
20 Implied Table Table

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implied:Table
21 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
22 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
23 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
24 Gross profit Concept (Monetary) For Period Credit ifrs-full:GrossProfit
25 Selling, general and administration Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
26 Research and development Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
27 Royalty income Concept (Monetary) For Period Credit ifrs-full:RevenueFromRoyalties
28 Other operating income/(expense) Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
29 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
30 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
31 Finance expense Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
32 Profit on disposal of interest in associates Concept (Monetary) For Period Credit gsk:GainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
33 Share of after tax profits of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
34 Profit before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
35 Taxation Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
36 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
37 Profit attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
38 Profit attributable to shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
39 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
40 Basic earnings per share (pence) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
41 Diluted earnings per share (pence) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
42 1004 - Statement - Consolidated statement of comprehensive income Network

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http://www.gsk.com/taxonomy/role/StatementOfComprehensiveIncomeOCIComponentsPresentedBeforeTax-420000
43 Implied Table Table

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implied:Table
44 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
45 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
46 Items that may be subsequently reclassified to income statement: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
47 Exchange movements on overseas net assets and net investment hedges Concept (Monetary) For Period Credit gsk:ExchangeMovementsOnOverseasNetAssetsAndNetInvestmentHedges
48 Reclassification of exchange on liquidation or disposal of overseas subsidiaries Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
49 Fair value movements on equity investments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
50 Deferred tax on fair value movements on equity investments Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
51 Reclassification of fair value movements on equity investments Concept (Monetary) For Period Debit gsk:ReclassificationOfFairValueMovementsOnEquityInvestments
52 Deferred tax reversed on reclassification of equity investments Concept (Monetary) For Period Debit gsk:DeferredTaxReversedOnReclassificationOfEquityInvestment
53 Fair value movements on cash flow hedges Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesBeforeTax
54 Deferred tax on fair value movements on cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
55 Reclassification of cash flow hedges to income statement Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax
56 Deferred tax reversed on reclassification of cash flow hedges Concept (Monetary) For Period Credit gsk:DeferredTaxReversedOnReclassificationOfCashFlowHedges
57 Items that may be subsequently reclassified to income statement Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
58 Items that will not be reclassified to income statement: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
59 Exchange movements on overseas net assets of non-controlling interests Concept (Monetary) For Period Credit gsk:ExchangeMovementsOnOverseasNetAssetsOfNonControllingInterests
60 Fair value movements on equity investments Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments
61 Deferred tax on fair value movements on equity investments Concept (Monetary) For Period Credit gsk:OtherComprehensiveIncomeDeferredTaxOnFairValueMovementsOnEquityInvestments
62 Remeasurement gains/(losses) on defined benefit plans Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
63 Tax on remeasurement of defined benefit plans Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
64 Items that will not be reclassified to income statement Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
65 Other comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
66 Total comprehensive income/(expense) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
67 Total comprehensive income for the year attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
68 Shareholders Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
69 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
70 Total comprehensive income/(expense) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
71 1005 - Statement - Consolidated balance sheet Network

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http://www.gsk.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
72 Implied Table Table

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73 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
74 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
75 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
76 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
77 Other intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
78 Investments in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
79 Other investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
80 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
81 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
82 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
83 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
84 Current assets Abstract ifrs-full:CurrentAssetsAbstract
85 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
86 Current tax recoverable Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssets
87 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
88 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:CurrentDerivativeFinancialAssets
89 Liquid investments Concept (Monetary) As Of Debit gsk:LiquidInvestmentsCurrent
90 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
91 Assets held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
92 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
93 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
94 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
95 Short-term borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
96 Contingent consideration liabilities Concept (Monetary) As Of Credit gsk:ContingentConsiderationLiabilitiesCurrent
97 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
98 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
99 Current tax payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
100 Short-term provisions Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
101 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
102 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
103 Long-term borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
104 Corporation tax payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesNoncurrent
105 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
106 Pensions and other post-employment benefits Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
107 Other provisions Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
108 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:NoncurrentDerivativeFinancialLiabilities
109 Contingent consideration liabilities Concept (Monetary) As Of Credit gsk:ContingentConsiderationLiabilitiesNoncurrent
110 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
111 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
112 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
113 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
114 Equity Abstract ifrs-full:EquityAbstract
115 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
116 Share premium account Concept (Monetary) As Of Credit ifrs-full:SharePremium
117 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
118 Other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
119 Shareholders' equity Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
120 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
121 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
122 1006 - Statement - Consolidated statement of changes in equity Network

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http://www.gsk.com/taxonomy/role/StatementOfChangesInEquity-610000
123 Statement of changes in equity [table] Table

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ifrs-full:StatementOfChangesInEquityTable
124 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
125 Equity [member] Member ifrs-full:EquityMember
126 Share capital [member] Member ifrs-full:IssuedCapitalMember
127 Share premium [member] Member ifrs-full:SharePremiumMember
128 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
129 Other reserves [member] Member ifrs-full:OtherReservesMember
130 Total [member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
131 Non- controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
132 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
133 Currently stated [member] Member ifrs-full:RestatedMember
134 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
135 IFRS 15 adjustments [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
136 IFRS 9 adjustments [member] Member gsk:IncreaseDecreaseDueToApplicationOfIFRS9Member
137 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
138 Equity at beginning of period Concept (Monetary) As Of Credit ifrs-full:Equity
139 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
140 Other comprehensive income/(expense) for the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
141 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
142 Distributions to non-controlling interests Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
143 Contribution from non-controlling interests Concept (Monetary) For Period Credit gsk:IncreaseThroughOtherContributionsByNoncontrollingInterestsEquity
144 Derecognition of non-controlling interests in Consumer Healthcare Joint Venture Concept (Monetary) For Period Credit gsk:DerecognitionOfNoncontrollingInterests
145 Dividends to shareholders Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
146 Dividends to shareholders Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
147 Recognition of liabilities with non-controlling interests Concept (Monetary) For Period Debit gsk:RecognitionOfLiabilitiesWithNoncontrollingInterests
148 Realised profits on disposal of equity investments Concept (Monetary) For Period Credit ifrs-full:ProfitsLossesOnDisposalOfInvestmentsAndChangesInValueOfInvestments
149 Derecognition of liabilities with non-controlling interests Concept (Monetary) For Period Credit gsk:DerecognitionOfLiabilitiesWithNoncontrollingInterests
150 Share of associates and joint ventures realised profits on disposal of equity investments Concept (Monetary) For Period Credit gsk:ShareOfAssociatesAndJointVenturesRealisedProfitsOnDisposalOfEquityInvestments
151 Changes in non-controllinginterests Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInNoncontrollingInterests
152 Shares issued Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
153 Shares acquired by ESOP Trusts Concept (Monetary) For Period Credit gsk:PaymentForSharesAcquiredByEmployeeStockOptionPlanTrusts
154 Write-down of shares held by ESOP Trusts Concept (Monetary) For Period Credit gsk:WritedownOfSharesHeldByEmployeeStockOwnershipPlan
155 Share-based incentive plans Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
156 Tax on share-based incentive plans Concept (Monetary) For Period Debit ifrs-full:DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions
157 Equity at end of period Concept (Monetary) As Of Credit ifrs-full:Equity
158 Equity at end of period at Dec 31, 2017, as adjusted Concept (Monetary) As Of Credit gsk:AdjustedEquity
159 1007 - Statement - Consolidated cash flow statement Network

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http://www.gsk.com/taxonomy/role/StatementOfCashFlowsIndirectMethod-520000
160 Implied Table Table

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161 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
162 Cash flow from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
163 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
164 Adjustments reconciling profit after tax to operating cash flows Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForReconcileProfitLoss
165 Cash generated from operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
166 Taxation paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
167 Net cash inflow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
168 Cash flow from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
169 Purchase of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
170 Proceeds from sale of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
171 Purchase of intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
172 Proceeds from sale of intangible assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities
173 Purchase of equity investments Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
174 Proceeds from sale of equity investments Concept (Monetary) For Period Debit ifrs-full:OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
175 Contingent consideration paid Concept (Monetary) For Period Credit gsk:ContingentConsiderationPaid
176 Purchase of businesses, net of cash acquired Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
177 Disposal of businesses Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
178 Investments in associates and joint ventures Concept (Monetary) For Period Credit gsk:PurchaseOfInvestmentInAssociatesAndJointVentures
179 Proceeds from disposal of interests in associates Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInterestsInAssociates
180 Decrease in liquid investments Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInLiquidInvestments
181 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsInvestingActivities
182 Dividends from associates, joint ventures and equity investments Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsInvestingActivities
183 Cash inflow Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
184 Cash flow from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
185 Shares acquired by ESOP Trusts Concept (Monetary) For Period Credit gsk:PaymentForSharesAcquiredByEmployeeStockOptionPlanTrusts
186 Issue of share capital Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
187 Purchase of non-controlling interests Concept (Monetary) For Period Credit gsk:PurchaseOfNonControllingInterests
188 Increase in long-term loans Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
189 Repayment of short-term Notes Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
190 Increase in/(repayment of) other short-term loans Concept (Monetary) For Period Debit gsk:ProceedsFromRepaymentsOfOtherCurrentBorrowings
191 Net repayment of obligations under finance leases Concept (Monetary) For Period Credit ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
192 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsFinancingActivities
193 Dividends paid to shareholders Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
194 Distributions to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
195 Contributions from non-controlling interests Concept (Monetary) For Period Debit ifrs-full:ProceedsFromContributionsOfNoncontrollingInterests
196 Other financing cash flows Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
197 Net cash outflow from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
198 Increase/(decrease) in cash and bank overdrafts Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
199 Cash and bank overdrafts at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition
200 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
201 Increase/(decrease) in cash and bank overdrafts Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
202 Cash and bank overdrafts at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition
203 Cash and bank overdrafts at end of year comprise: Abstract ifrs-full:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPositionAbstract
204 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
205 Cash and cash equivalents reported in assets held for sale Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale
206 Cash and cash equivalents after assets held for sale reported Concept (Monetary) As Of Debit gsk:CashAndCashEquivalentsAfterAdjustmentForAssetsHeldForSale
207 Overdrafts Concept (Monetary) As Of Credit ifrs-full:BankOverdraftsClassifiedAsCashEquivalents
208 Cash and bank overdrafts at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition
209 1008 - Disclosure - Presentation of the financial statements Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
210 Implied Table Table

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211 Text block [abstract] Abstract gsk:TextBlockAbstract
212 Presentation of the financial statements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
213 1009 - Disclosure - Accounting principles and policies Network

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214 Implied Table Table

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215 Text block [abstract] Abstract gsk:TextBlockAbstract
216 Accounting principles and policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
217 1010 - Disclosure - Key accounting judgements and estimates Network

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218 Implied Table Table

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219 Text block [abstract] Abstract gsk:TextBlockAbstract
220 Key accounting judgements and estimates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
221 1011 - Disclosure - New accounting requirements Network

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222 Implied Table Table

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223 Text block [abstract] Abstract gsk:TextBlockAbstract
224 New accounting requirements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
225 1012 - Disclosure - Exchange rates Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory
226 Implied Table Table

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228 Exchange rates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory
229 1013 - Disclosure - Turnover and segment information Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEntitysReportableSegmentsExplanatory
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231 Text block [abstract] Abstract gsk:TextBlockAbstract
232 Turnover and segment information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
233 1014 - Disclosure - Other operating income/(expense) Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfOtherOperatingIncomeExpenseExplanatory
234 Implied Table Table

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236 Other operating income/(expense) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
237 1015 - Disclosure - Operating profit Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfProfitLossFromOperatingActivitiesExplanatory
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240 Operating profit Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProfitLossFromOperatingActivitiesExplanatory
241 1016 - Disclosure - Employee costs Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEmployeeCostsExplanatory
242 Implied Table Table

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245 1017 - Disclosure - Major restructuring costs Network

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248 Major restructuring costs Concept (Text Block (HTML)) For Period gsk:DisclosureOfMajorRestructuringCostsExplanatory
249 1018 - Disclosure - Finance income Network

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250 Implied Table Table

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252 Finance income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExplanatory
253 1019 - Disclosure - Finance expense Network

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255 Text block [abstract] Abstract gsk:TextBlockAbstract
256 Finance expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
257 1020 - Disclosure - Associates and joint ventures Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfAssociatesAndJointVenturesExplanatory
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261 1021 - Disclosure - Taxation Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfIncomeTaxExplanatory
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264 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
265 1022 - Disclosure - Earnings per share Network

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http://www.gsk.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEarningsPerShareExplanatory
266 Implied Table Table

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267 Text block [abstract] Abstract gsk:TextBlockAbstract
268 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
269 1023 - Disclosure - Dividends Network

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270 Implied Table Table

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271 Text block [abstract] Abstract gsk:TextBlockAbstract
272 Dividends Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDividendsExplanatory
273 1024 - Disclosure - Property, plant and equipment Network

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274 Implied Table Table

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275 Text block [abstract] Abstract gsk:TextBlockAbstract
276 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
277 1025 - Disclosure - Goodwill Network

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278 Implied Table Table

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279 Text block [abstract] Abstract gsk:TextBlockAbstract
280 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoodwillExplanatory
281 1026 - Disclosure - Other intangible assets Network

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282 Implied Table Table

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283 Text block [abstract] Abstract gsk:TextBlockAbstract
284 Other intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
285 1027 - Disclosure - Investments in associates and joint ventures Network

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286 Implied Table Table

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287 Text block [abstract] Abstract gsk:TextBlockAbstract
288 Investments in associates and joint ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory
289 1028 - Disclosure - Other investments Network

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290 Implied Table Table

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291 Text block [abstract] Abstract gsk:TextBlockAbstract
292 Other investments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory
293 1029 - Disclosure - Other non-current assets Network

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294 Implied Table Table

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295 Text block [abstract] Abstract gsk:TextBlockAbstract
296 Other non-current assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory
297 1030 - Disclosure - Inventories Network

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298 Implied Table Table

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299 Text block [abstract] Abstract gsk:TextBlockAbstract
300 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
301 1031 - Disclosure - Trade and other receivables Network

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302 Implied Table Table

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303 Text block [abstract] Abstract gsk:TextBlockAbstract
304 Trade and other receivables Concept (Text Block (HTML)) For Period gsk:DisclosureOfTradesAndOtherReceivableExplanatory
305 1032 - Disclosure - Cash and cash equivalents Network

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306 Implied Table Table

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307 Text block [abstract] Abstract gsk:TextBlockAbstract
308 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
309 1033 - Disclosure - Assets held for sale Network

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310 Implied Table Table

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311 Text block [abstract] Abstract gsk:TextBlockAbstract
312 Assets held for sale Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory
313 1034 - Disclosure - Trade and other payables Network

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314 Implied Table Table

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315 Text block [abstract] Abstract gsk:TextBlockAbstract
316 Trade and other payables Concept (Text Block (HTML)) For Period gsk:DisclosureOfEntireTradeAndOtherPayablesExplanatory
317 1035 - Disclosure - Pensions and other post-employment benefits Network

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318 Implied Table Table

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319 Text block [abstract] Abstract gsk:TextBlockAbstract
320 Pensions and other post-employment benefits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
321 1036 - Disclosure - Other provisions Network

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322 Implied Table Table

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323 Text block [abstract] Abstract gsk:TextBlockAbstract
324 Other provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory
325 1037 - Disclosure - Other non-current liabilities Network

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326 Implied Table Table

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327 Text block [abstract] Abstract gsk:TextBlockAbstract
328 Other non-current liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory
329 1038 - Disclosure - Net debt Network

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330 Implied Table Table

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331 Text block [abstract] Abstract gsk:TextBlockAbstract
332 Net debt Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
333 1039 - Disclosure - Contingent liabilities Network

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334 Implied Table Table

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335 Text block [abstract] Abstract gsk:TextBlockAbstract
336 Contingent liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfContingentLiabilitiesExplanatory
337 1040 - Disclosure - Share capital and share premium account Network

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338 Implied Table Table

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339 Text block [abstract] Abstract gsk:TextBlockAbstract
340 Share capital and share premium account Concept (Text Block (HTML)) For Period gsk:DisclosureOfShareCapitalAndSharePremiumExplanatory
341 1041 - Disclosure - Movements in equity Network

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342 Implied Table Table

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343 Text block [abstract] Abstract gsk:TextBlockAbstract
344 Movements in equity Concept (Text Block (HTML)) For Period gsk:DisclosureOfMovementsInEquityExplanatory
345 1042 - Disclosure - Related party transactions Network

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346 Implied Table Table

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347 Text block [abstract] Abstract gsk:TextBlockAbstract
348 Related party transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
349 1043 - Disclosure - Adjustments reconciling profit after tax to operating cash flows Network

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350 Implied Table Table

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351 Text block [abstract] Abstract gsk:TextBlockAbstract
352 Adjustments reconciling profit after tax to operating cash flows Concept (Text Block (HTML)) For Period gsk:DisclosureOfAdjustmentsReconcilingProfitAfterTaxToOperatingCashFlowsExplanatory
353 1044 - Disclosure - Reconciliation of net cash flow to movement in net debt Network

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354 Implied Table Table

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355 Text block [abstract] Abstract gsk:TextBlockAbstract
356 Reconciliation of net cash flow to movement in net debt Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDebtSecuritiesExplanatory
357 1045 - Disclosure - Acquisitions and disposals Network

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358 Implied Table Table

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359 Text block [abstract] Abstract gsk:TextBlockAbstract
360 Acquisitions and disposals Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBusinessCombinationsExplanatory
361 1046 - Disclosure - Contingent consideration liabilities Network

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362 Implied Table Table

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363 Text block [abstract] Abstract gsk:TextBlockAbstract
364 Contingent consideration liabilities Concept (Text Block (HTML)) For Period gsk:DisclosureOfContingentConsiderationLiabilitiesExplanatory
365 1047 - Disclosure - Non-controlling interests Network

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366 Implied Table Table

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367 Text block [abstract] Abstract gsk:TextBlockAbstract
368 Non-controlling interests Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncontrollingInterestsExplanatory
369 1048 - Disclosure - Commitments Network

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370 Implied Table Table

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371 Text block [abstract] Abstract gsk:TextBlockAbstract
372 Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsExplanatory
373 1049 - Disclosure - Financial instruments and related disclosures Network

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374 Implied Table Table

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375 Text block [abstract] Abstract gsk:TextBlockAbstract
376 Financial instruments and related disclosures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
377 1050 - Disclosure - Employee share schemes Network

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378 Implied Table Table

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379 Text block [abstract] Abstract gsk:TextBlockAbstract
380 Employee share schemes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
381 1051 - Disclosure - Principal Group companies Network

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382 Implied Table Table

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383 Text block [abstract] Abstract gsk:TextBlockAbstract
384 Principal Group companies Concept (Text Block (HTML)) For Period gsk:DisclosureOfPrincipalGroupCompaniesExplanatory
385 1052 - Disclosure - Legal proceedings Network

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386 Implied Table Table

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387 Text block [abstract] Abstract gsk:TextBlockAbstract
388 Legal proceedings Concept (Text Block (HTML)) For Period gsk:DisclosureOfLegalProceedingsExplanatory
389 1053 - Disclosure - Post balance sheet events Network

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390 Implied Table Table

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391 Text block [abstract] Abstract gsk:TextBlockAbstract
392 Post balance sheet events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
393 1054 - Disclosure - Presentation of the financial statements (Policies) Network

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394 Statement [table] Table

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395 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
396 Currently stated [member] Member ifrs-full:RestatedMember
397 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
398 Statement [LineItems] LineItems gsk:StatementLineItems
399 Implementation of IFRS 9 and IFRS 15 Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
400 Consolidation Concept (Text Block (HTML)) For Period gsk:DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory
401 Business combinations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
402 Foreign currency translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
403 Revenue Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
404 Expenditure Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForExpensesExplanatory
405 Research and development Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory
406 Environmental expenditure Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory
407 Legal and other disputes Concept (Text Block (HTML)) For Period gsk:DescriptionOfAccountingPolicyForLegalAndOtherDisputesExplanatory
408 Pensions and other post-employment benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
409 Employee share plans Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
410 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
411 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
412 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
413 Other intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
414 Impairment of non-current assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory
415 Investments in associates, joint ventures and joint operations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
416 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
417 Financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
418 Other investments Concept (Text Block (HTML)) For Period gsk:DescriptionOfAccountingPolicyForOtherInvestmentExplanatory
419 Trade receivables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
420 Cash and cash equivalents Concept (Text Block (HTML)) For Period gsk:DescriptionOfAccountingPolicyForCashAndCashEquivalentsExplanatory
421 Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingsExplanatory
422 Derivative financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory
423 Hedge accounting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForHedgingExplanatory
424 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
425 Discounting Concept (Text Block (HTML)) For Period gsk:DescriptionOfAccountingPolicyForDiscountingExplanatory
426 Available-for-sale investments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory
427 Derivative financial instruments and hedging Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
428 1055 - Disclosure - Presentation of the financial statements (Tables) Network

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429 Implied Table Table

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430 Text block [abstract] Abstract gsk:TextBlockAbstract
431 Summary of Amount of Adjustment for Each Financial Statement Line Item Affected by Application of IFRS 9 and IFRS 15 Concept (Text Block (HTML)) For Period gsk:DisclosureOfAdjustmentForEachFinancialStatementLineItemAffectedByApplicationIFRS9AndIFRS15Explanatory
432 1056 - Disclosure - Accounting principles and policies (Tables) Network

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433 Implied Table Table

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434 Text block [abstract] Abstract gsk:TextBlockAbstract
435 Summary of Expected Useful Lives of Property Plant and Equipment Concept (Text Block (HTML)) For Period gsk:DisclosureOfEstimatedUsefulLivesOfPropertyPlantAndEquipmentExplanatory
436 1057 - Disclosure - Exchange rates (Tables) Network

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437 Implied Table Table

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438 Text block [abstract] Abstract gsk:TextBlockAbstract
439 Summary of Currencies Translations and Relevant Exchange Rates Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutEffectOfChangesInForeignExchangeRatesExplanatory
440 1058 - Disclosure - Turnover and segment information (Tables) Network

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441 Statement [table] Table

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442 Segments [axis] Axis ifrs-full:SegmentsAxis
443 Segments [member] Member ifrs-full:SegmentsMember
444 Pharmaceuticals [member] Member gsk:PharmaceuticalsMember
445 Vaccines [member] Member gsk:VaccinesMember
446 Consumer Healthcare [member] Member gsk:ConsumerHealthcareMember
447 Statement [LineItems] LineItems gsk:StatementLineItems
448 Turnover by Segment Concept (Text Block (HTML)) For Period gsk:DisclosureOfTurnoverBySegmentExplanatory
449 Turnover by Product & Service Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProductsAndServicesExplanatory
450 Segment Profit and Operating Profit Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
451 Summary of Geographical Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
452 1059 - Disclosure - Other operating income/(expense) (Tables) Network

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453 Implied Table Table

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454 Text block [abstract] Abstract gsk:TextBlockAbstract
455 Summary Information about Other Operating Income Expense Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutOtherOperatingIncomeExpenseExplanatory
456 1060 - Disclosure - Operating profit (Tables) Network

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457 Statement [table] Table

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458 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
459 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
460 Pension schemes [member] Member ifrs-full:PensionDefinedBenefitPlansMember
461 Statement [LineItems] LineItems gsk:StatementLineItems
462 Summary of Information About Profit Loss Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutProfitLossExplanatory
463 Summary of Auditors Remuneration Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAuditorsRemunerationExplanatory
464 1061 - Disclosure - Employee costs (Tables) Network

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465 Implied Table Table

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466 Text block [abstract] Abstract gsk:TextBlockAbstract
467 Summary of Employee Costs Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutEmployeeCostsExplanatory
468 Summary of Cost of Share-based Incentive Plans Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutShareBasedPaymentArrangementsExplanatory
469 Disclosure of Average Monthly Number of Persons Employed by the Group (Including Directors) Concept (Text Block (HTML)) For Period gsk:DisclosureOfNumberOfEmployeesExplanatory
470 Summary of Compensation of the Directors and Senior Management Concept (Text Block (HTML)) For Period gsk:DisclosureOfCompensationOfDirectorsAndSeniorManagementExplanatory
471 1062 - Disclosure - Major restructuring costs (Tables) Network

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472 Implied Table Table

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473 Text block [abstract] Abstract gsk:TextBlockAbstract
474 Summary of Analysis of Costs Charged to Operating Profit Concept (Text Block (HTML)) For Period gsk:DisclosureOfMajorRestructuringCostsChargedToOperatingProfitExplanatory
475 Summary of Major Restructuring Charges Concept (Text Block (HTML)) For Period gsk:DisclosureOfRestructuringCostsExplanatory
476 1063 - Disclosure - Finance income (Tables) Network

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477 Implied Table Table

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478 Text block [abstract] Abstract gsk:TextBlockAbstract
479 Summary of Finance Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExplanatory
480 1064 - Disclosure - Finance expense (Tables) Network

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481 Implied Table Table

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482 Text block [abstract] Abstract gsk:TextBlockAbstract
483 Summary of Finance Cost Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceCostExplanatory
484 1065 - Disclosure - Associates and joint ventures (Tables) Network

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485 Implied Table Table

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486 Text block [abstract] Abstract gsk:TextBlockAbstract
487 Summary of After Tax Profits and Losses of Associates and Joint Ventures Concept (Text Block (HTML)) For Period gsk:DisclosureOfShareOfAfterTaxProfitsAndLossesOfAssociatesAndJointVenturesExplanatory
488 Summary of Group Held for Significant Associate Concept (Text Block (HTML)) For Period gsk:DisclosureOfGroupHeldSignificantAssociateExplanatory
489 Summary of Aggregated Financial Information Concept (Text Block (HTML)) For Period gsk:DisclosureOfAggregatedFinancialInformationOfAssociatesAndJointVenturesExplanatory
490 1066 - Disclosure - Taxation (Tables) Network

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491 Implied Table Table

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492 Text block [abstract] Abstract gsk:TextBlockAbstract
493 Summary of Taxation Charge Based on Profits Concept (Text Block (HTML)) For Period gsk:DisclosureOfIncomeTaxExpenseBenefitsExplanatory
494 Summary of Reconciliation of Tax Charge Calculated at the UK Statutory Rate on the Group Profit Before Tax with the Actual Tax Charge Concept (Text Block (HTML)) For Period gsk:DisclosureOfReconciliationOfActualTaxChargeAndProfitChargedAtUKTaxRateExplanatory
495 Summary of Tax on Items Charged to Equity and Statement of Comprehensive Income Concept (Text Block (HTML)) For Period gsk:DisclosureOfCurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAndComprehensiveIncomeExplanatory
496 Summary of Movement in Deferred Tax Assets and Liabilities Concept (Text Block (HTML)) For Period gsk:DisclosureOfMovementInDeferredTaxAssetsAndLiabilitiesExplanatory
497 Summary of Net Temporary Differences Include Accrued Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
498 Summary of Temporary Difference Unused Tax Losses and Unused Tax Credits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
499 1067 - Disclosure - Earnings per share (Tables) Network

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500 Implied Table Table

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501 Text block [abstract] Abstract gsk:TextBlockAbstract
502 Summary of Basic and Diluted Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
503 Schedule of Numbers of Shares Earnings Per Share Concept (Text Block (HTML)) For Period gsk:DisclosureOfWeightedAverageNumbersOfSharesEarningsPerShareExplanatory
504 1068 - Disclosure - Dividends (Tables) Network

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505 Implied Table Table

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506 Text block [abstract] Abstract gsk:TextBlockAbstract
507 Summary of Interim Financial Reporting Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterimFinancialReportingExplanatory
508 Summary of Dividends to Shareholders Concept (Text Block (HTML)) For Period gsk:DisclosureOfDividendsPaidExplanatory
509 1069 - Disclosure - Property, plant and equipment (Tables) Network

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510 Implied Table Table

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511 Text block [abstract] Abstract gsk:TextBlockAbstract
512 Summary of Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
513 1070 - Disclosure - Goodwill (Tables) Network

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514 Implied Table Table

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515 Text block [abstract] Abstract gsk:TextBlockAbstract
516 Summary of Changes in Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory
517 Summary of Goodwill Allocated to Segments Concept (Text Block (HTML)) For Period gsk:DisclosureOfAllocationOfGoodwillToSegmentsExplanatory
518 Schedule of Discounted Cash Flow Models Used in Impairment Tests Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory
519 1071 - Disclosure - Other intangible assets (Tables) Network

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520 Implied Table Table

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521 Text block [abstract] Abstract gsk:TextBlockAbstract
522 Summary of Other Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
523 Schedule of Amortisation and Impairment Losses, Net of Reversals Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
524 Summary of Book Values of Largest Individual Items Concept (Text Block (HTML)) For Period gsk:DisclosureOfLicencesIncludedInIntangibleAssetsExplanatory
525 Summary of Book Values of Major Brands Concept (Text Block (HTML)) For Period gsk:DisclosureOfBrandNamesRelatedToAcquisitionsExplanatory
526 1072 - Disclosure - Investments in associates and joint ventures (Tables) Network

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527 Implied Table Table

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528 Text block [abstract] Abstract gsk:TextBlockAbstract
529 Schedule of Investments in Associates and Joint Ventures Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationOfInvestmentsInAssociatesAndJointVenturesExplanatory
530 Summary of Balance Sheet Information Concept (Text Block (HTML)) For Period gsk:DisclosureOfInvestmentsAssociatesJointVenturesExplanatory
531 1073 - Disclosure - Other investments (Tables) Network

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532 Implied Table Table

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533 Text block [abstract] Abstract gsk:TextBlockAbstract
534 Schedule of Other Investments Concept (Text Block (HTML)) For Period gsk:DisclosureOfScheduleOfOtherInvestmentExplanatory
535 Schedule of Carrying Value of Other Investments Concept (Text Block (HTML)) For Period gsk:DisclosureOfCarryingValueOfOtherInvestmentImpairedExplanatory
536 1074 - Disclosure - Other non-current assets (Tables) Network

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537 Implied Table Table

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538 Text block [abstract] Abstract gsk:TextBlockAbstract
539 Summary of Other Non-Current Assets Concept (Text Block (HTML)) For Period gsk:SummaryOfReceivablesInOtherNonCurrentAssetsExplanatory
540 1075 - Disclosure - Inventories (Tables) Network

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541 Implied Table Table

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542 Text block [abstract] Abstract gsk:TextBlockAbstract
543 Summary of Inventories Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationOfInventoriesExplanatory
544 1076 - Disclosure - Trade and other receivables (Tables) Network

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545 Implied Table Table

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546 Text block [abstract] Abstract gsk:TextBlockAbstract
547 Summary of Trade and Other Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
548 Summary of Loss Allowance Concept (Text Block (HTML)) For Period gsk:DisclosureOfExpectedCreditLossAllowanceExplanatory
549 1077 - Disclosure - Cash and cash equivalents (Tables) Network

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550 Implied Table Table

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551 Text block [abstract] Abstract gsk:TextBlockAbstract
552 Summary of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory
553 1078 - Disclosure - Assets held for sale (Tables) Network

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554 Implied Table Table

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555 Text block [abstract] Abstract gsk:TextBlockAbstract
556 Summary of Assets Held for Sale Concept (Text Block (HTML)) For Period gsk:DisclosureOfAssetsHeldForSaleExplanatory
557 1079 - Disclosure - Trade and other payables (Tables) Network

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558 Implied Table Table

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559 Text block [abstract] Abstract gsk:TextBlockAbstract
560 Summary of Trade and Other Payables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
561 Summary of Increase/(Decrease) in Financial Liability and Loss/(Gain) in Income Statement Concept (Text Block (HTML)) For Period gsk:DisclosureOfIncomeStatementAndBalanceSheetSensitivityOfPutOptionToReasonablyPossibleChangesInKeyAssumptionExplanatory
562 1080 - Disclosure - Pensions and other post-employment benefits (Tables) Network

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563 Statement [table] Table

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564 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
565 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
566 Defined benefit pension and post-retirement healthcare scheme. [member] Member gsk:DefinedBenefitPensionAndPostretirementHealthcareSchemeMember
567 Defined Benefit Pension Obligation [member] Member gsk:DefinedBenefitPensionObligationMember
568 Post-retirement benefits [member] Member gsk:PostretirementBenefitsMember
569 Statement [LineItems] LineItems gsk:StatementLineItems
570 Summary of Analysis of Defined Benefit Pension Obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
571 Summary of Average Life Expectancy Assumed Concept (Text Block (HTML)) For Period gsk:DisclosureOfAverageLifeExpectancyAssumptionsExplanatory
572 Summary of Financial Assumptions in Assessing Defined Benefit Liabilities Concept (Text Block (HTML)) For Period gsk:DisclosureOfDefinedBenefitPlanActuarialAssumptionsExplanatory
573 Summary of Amounts Recorded in Income Statement and Statement of Comprehensive Income Related to Defined Benefit Pension and Post-retirement Healthcare Schemes Concept (Text Block (HTML)) For Period gsk:DisclosureOfDefinedBenefitPensionAndPostRetirementChargesExplanatory
574 Summary of Balance Sheet Presentation of Group Defined Benefit Pension Schemes and Other Post-retirement Benefits Concept (Text Block (HTML)) For Period gsk:DisclosureOfBalanceSheetPresentationOfDefinedBenefitPensionAndPostRetirementExplanatory
575 Summary of Fair Values of Assets and Liabilities of UK and US Defined Benefit Pension Schemes Together with Aggregated Data for Other Defined Benefit Pension Schemes in Group Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
576 Summary of Movements in Fair Values of Assets Concept (Text Block (HTML)) For Period gsk:DisclosureOfMovementsInFairValuesOfAssetsExplanatory
577 Summary of Movements in Defined Benefit Obligations Concept (Text Block (HTML)) For Period gsk:DisclosureOfMovementInDefinedBenefitLiabilityExplanatory
578 Summary of Net Defined Benefit Liability Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
579 Summary of Defined Benefit Pension Obligation Analysed by Membership Category Concept (Text Block (HTML)) For Period gsk:DisclosureOfDefinedBenefitPensionObligationAnalysedByMembershipCategoryExplanatory
580 Summary of Post-Retirement Benefit Obligation Analysed By Membership Category Concept (Text Block (HTML)) For Period gsk:DisclosureOfPostRetirementBenefitObligationAnalysedByMembershipCategoryExplanatory
581 Summary of Weighted Average Duration of Defined Benefit Obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory
582 Summary of Changes In Assumptions Used on Benefit Obligations, Defined Benefit Pension and Post Retirement Costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
583 1081 - Disclosure - Other provisions (Tables) Network

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584 Implied Table Table

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585 Text block [abstract] Abstract gsk:TextBlockAbstract
586 Summary of Other Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
587 1082 - Disclosure - Other non-current liabilities (Tables) Network

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588 Implied Table Table

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589 Text block [abstract] Abstract gsk:TextBlockAbstract
590 Summary of Other Noncurrent Liabilities Concept (Text Block (HTML)) For Period gsk:DisclosureOfOtherNonCurrentLiabilitiesDetailsExplanatory
591 1083 - Disclosure - Net debt (Tables) Network

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592 Implied Table Table

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593 Text block [abstract] Abstract gsk:TextBlockAbstract
594 Schedule of Current Assets, Short and Long Term Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
595 Schedule of Finance Lease Obligations Concept (Text Block (HTML)) For Period gsk:DisclosureOfFinanceLeaseObligationsExplanatory
596 1084 - Disclosure - Share capital and share premium account (Tables) Network

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597 Implied Table Table

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598 Text block [abstract] Abstract gsk:TextBlockAbstract
599 Summary of Share Capital and Share Premium Concept (Text Block (HTML)) For Period gsk:DisclosureOfClassesOfShareCapitalAndSharePremiumExplanatory
600 Summary of Share Capital Concept (Text Block (HTML)) For Period gsk:DisclosureOfClassesOfShareCapitalTableExplanatory
601 1085 - Disclosure - Movements in equity (Tables) Network

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602 Implied Table Table

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603 Text block [abstract] Abstract gsk:TextBlockAbstract
604 Summary of Cumulative Translation Exchange in Equity Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
605 Summary of Analysis of Other Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
606 1086 - Disclosure - Adjustments reconciling profit after tax to operating cash flows (Tables) Network

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607 Implied Table Table

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608 Text block [abstract] Abstract gsk:TextBlockAbstract
609 Summary of Cash Generated from Operations Concept (Text Block (HTML)) For Period gsk:ScheduleOfAdjustmentsReconcilingProfitAfterTaxToOperatingCashFlowsExplanatory
610 1087 - Disclosure - Reconciliation of net cash flow to movement in net debt (Tables) Network

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611 Implied Table Table

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612 Text block [abstract] Abstract gsk:TextBlockAbstract
613 Summary of Net Debt Concept (Text Block (HTML)) For Period gsk:DisclosureOfReconciliationOfNetCashFlowToMovementInNetDebtExplanatory
614 Summary of Analysis of Changes in Net Debt Concept (Text Block (HTML)) For Period gsk:DisclosureOfAnalysisOfChangesInNetDebtExplanatory
615 1088 - Disclosure - Acquisitions and disposals (Tables) Network

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616 Implied Table Table

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617 Text block [abstract] Abstract gsk:TextBlockAbstract
618 Summary of Cash Flows from Business Combinations Concept (Text Block (HTML)) For Period gsk:DisclosureOfCashFlowsFromBusinessCombinationsExplanatory
619 Summary of Profit on Disposal of Businesses Concept (Text Block (HTML)) For Period gsk:DisclosureOfProfitOnDisposalOfBusinessesExplanatory
620 Summary of Investment in Associates and Joint Ventures Concept (Text Block (HTML)) For Period gsk:DisclosureOfInterestsInAssociatesAndJointVenturesExplanatory
621 1089 - Disclosure - Contingent consideration liabilities (Tables) Network

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622 Implied Table Table

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623 Text block [abstract] Abstract gsk:TextBlockAbstract
624 Summary of Fair Value of Contingent Consideration Liabilities Concept (Text Block (HTML)) For Period gsk:DisclosureOfFairValueOfContingentConsiderationLiabilitiesExplanatory
625 Summary of Possible Changes in key Inputs to Valuation of Contingent Consideration Liabilities Concept (Text Block (HTML)) For Period gsk:DisclosureOfValuationTechniquesAndKeyModelInputsUsedToMeasureContingentConsiderationExplanatory
626 1090 - Disclosure - Non-controlling interests (Tables) Network

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627 Statement [table] Table

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628 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
629 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
630 ViiV healthcare [member] Member gsk:ViiVHealthCareMember
631 Consumer health care joint venture [member] Member gsk:ConsumerHealthCareJointVentureMember
632 Statement [LineItems] LineItems gsk:StatementLineItems
633 Summarised Financial Information of Joint Venture Concept (Text Block (HTML)) For Period gsk:DisclosureOfFinancialInformationAboutTheAmountsAttributableToNonControllingInterestsExplanatory
634 Schedule of Amount Attributable to Joint Venture Included in GSK's Consolidated Statement of Comprehensive Income, Consolidated Statement of Changes in Equity and Consolidated Balance Sheet Concept (Text Block (HTML)) For Period gsk:ScheduleOfInformationAboutTheAmountsAttributableToNonControllingInterestsExplanatory
635 1091 - Disclosure - Commitments (Tables) Network

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636 Implied Table Table

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637 Text block [abstract] Abstract gsk:TextBlockAbstract
638 Schedule of Contractual Obligations and Commitments Concept (Text Block (HTML)) For Period gsk:DisclosureOfContractualObligationsAndCommitmentsExplanatory
639 Summary of Commitments Under Non-Cancellable Operating Leases Concept (Text Block (HTML)) For Period gsk:DisclosureOfOperatingLeasesExplanatory
640 1092 - Disclosure - Financial instruments and related disclosures (Tables) Network

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641 Statement [table] Table

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642 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
643 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
644 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
645 Foreign Exchange Forward Contracts and Swaps [member] Member gsk:ForeignExchangeForwardContractsAndSwapsMember
646 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
647 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
648 Level 3 [member] Member ifrs-full:Level3OfFairValueHierarchyMember
649 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
650 Risks [member] Member ifrs-full:TypesOfRisksMember
651 Interest rate risk [member] Member ifrs-full:InterestRateRiskMember
652 Currency risk [member] Member ifrs-full:CurrencyRiskMember
653 Statement [LineItems] LineItems gsk:StatementLineItems
654 Summary of External Credit Exposure Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExternalCreditExposuresExplanatory
655 Summary of Financial Assets and Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory
656 Summary of Fair Value of Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory
657 Summary of Financial and Non Financial Assets Concept (Text Block (HTML)) For Period gsk:DisclosureOfFinancialAssetsAndNonFinancialAssetsExplanatory
658 Summary of Ageing of Financial Assets Which are Past Due and for Which No Provision for Bad or Doubtful Debts Has Been Made Concept (Text Block (HTML)) For Period gsk:DisclosureOfFinancialAssetsThatArePastDueAndHaveNotBeenImpairedExplanatory
659 Reconciliation of Financial Instruments Within Trade and Other Payables, Other Provisions, Other Non-current Liabilities and Contingent Consideration Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
660 Summary of Fair Values of Derivatives Held Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory
661 Summary of Detailed Information of Foreign Exchange Forward Contracts, Swaps Outstanding and Related Hedged Items Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsExplanatory
662 Summary of Effectiveness of Hedging Relationships and Amounts Reclassified from Hedging Reserve to Profit or Loss Concept (Text Block (HTML)) For Period gsk:DisclosureOfDetailedInformationAboutEffectivenessOfHedgingRelationshipsAndAmountsReclassifiedFromHedgingReserveToProfitOrLossExplanatory
663 Summary of Offsetting of Financial Assets and Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory
664 Summary of Debt Interest Rate Repricing Concept (Text Block (HTML)) For Period gsk:DisclosureOfDebtInterestRateRepricingExplanatory
665 Sensitivity Analysis for Each Type of Market Risk Concept (Text Block (HTML)) For Period ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
666 Summary of Anticipated Contractual Cash Flows Including Interest Payable for the Non-Derivative Financial Liabilities on Undiscounted Basis Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
667 Summary of Anticipated Contractual Cash Flows for Derivative Instruments, Excluding Embedded Derivatives and Equity Options, Using Undiscounted Cash Flows Concept (Text Block (HTML)) For Period gsk:DisclosureOfMaturityAnalysisForDerivativeFinancialInstrumentsExplanatory
668 1093 - Disclosure - Employee share schemes (Tables) Network

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669 Implied Table Table

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670 Text block [abstract] Abstract gsk:TextBlockAbstract
671 Schedule of Number of Shares and ADS Issuable Concept (Text Block (HTML)) For Period gsk:DisclosureOfEmployeeShareValuePlanExplanatory
672 Summary of Valuation Model Used to Valuing Saving - Related Option to Arrive at the Share Based Payment Charge Concept (Text Block (HTML)) For Period gsk:DisclosureOfShareOptionsAssumptionsRelatedToSavingsRelatedSchemesExplanatory
673 Summary of Option Outstanding Concept (Text Block (HTML)) For Period gsk:DisclosureOfShareOptionsAndSavingsRelatedOptionsOutstandingExplanatory
674 Summary of Shares Held for Share Award Schemes Concept (Text Block (HTML)) For Period gsk:DisclosureOfSharesHeldForShareAwardSchemesAndSharesOptionSchemesExplanatory
675 1094 - Disclosure - Principal Group companies (Tables) Network

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676 Implied Table Table

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677 Text block [abstract] Abstract gsk:TextBlockAbstract
678 Schedule of Principal Subsidiaries and Their Countries of Incorporation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
679 1095 - Disclosure - Presentation of the Financial Statements - Additional Information (Detail) Network

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680 Implied Table Table

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681 Presentation Of The Financial Statements [abstract] Abstract gsk:PresentationOfTheFinancialStatementsAbstract
682 Additional ECL allowance for trade receivables Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsWithModifiedContractualCashFlowsWhileLossAllowanceMeasuredAtLifetimeExpectedCreditLossesForWhichLossAllowanceChangedDuringReportingPeriodTo12monthExpectedCreditLossesGrossCarryingAmount
683 Other transition adjustments arising from change in impairment basis Concept (Monetary) For Period Debit gsk:OtherTransitionAdjustmentsArisingFromChangeInImpairmentBasis
684 Deferred tax impact, retained earnings Concept (Monetary) As Of Credit gsk:DeferredTaxImpactOnRetainedEarnings
685 Cumulative adjustment to decrease retained earnings Concept (Monetary) For Period Credit gsk:CumulativeAdjustmentToIncreaseDecreaseInRetainedEarnings
686 Transfer between retained earnings and fair value reserve Concept (Monetary) For Period Credit gsk:TransferBetweenRetainedEarningsAndFairValueReserve
687 1096 - Disclosure - Presentation of the Financial Statements - Summary of Amount of Adjustment for Each Financial Statement Line Item Affected by Application of IFRS 9 and IFRS 15 (Detail) Network

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688 Disclosure of adjustment for each financial statement line item affected by application IFRS 9 and IFRS 15 [table] Table

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689 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
690 Currently stated [member] Member ifrs-full:RestatedMember
691 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
692 IFRS 9 adjustments [member] Member gsk:IncreaseDecreaseDueToApplicationOfIFRS9Member
693 IFRS 15 adjustments [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
694 Disclosure of adjustment for each financial statement line item affected by application IFRS 9 and IFRS 15 [line items] LineItems gsk:DisclosureOfAdjustmentForEachFinancialStatementLineItemAffectedByApplicationIFRS9AndIFRS15LineItems
695 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
696 Liquid investments Concept (Monetary) As Of Debit gsk:LiquidInvestmentsCurrent
697 Other payables - returns and rebates Concept (Monetary) As Of Credit gsk:OtherPayablesReturnsAndRebates
698 Other payables - deferred income Concept (Monetary) As Of Credit gsk:OtherPayablesDeferredIncome
699 Deferred tax assets Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
700 Total effect on net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
701 Fair value reserve Concept (Monetary) As Of Credit ifrs-full:OtherReserves
702 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
703 Total effect on equity Concept (Monetary) As Of Credit ifrs-full:Equity
704 1097 - Disclosure - Accounting Principles and Policies - Additional Information (Detail) Network

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705 Disclosure of accounting principles and policies [table] Table

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706 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
707 Intangible assets [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
708 Licences and franchises [member] Member ifrs-full:LicencesAndFranchisesMember
709 Amortised brands [member] Member gsk:AmortisedBrandsMember
710 ERP software systems [member] Member gsk:ERPSoftwareSystemsMember
711 Other computer software [member] Member gsk:OtherComputerSoftwareMember
712 Range [axis] Axis ifrs-full:RangeAxis
713 Ranges [member] Member ifrs-full:RangesMember
714 Top of range [member] Member ifrs-full:TopOfRangeMember
715 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
716 Disclosure of accounting principles and policies [line items] LineItems gsk:DisclosureOfAccountingPrinciplesAndPoliciesLineItems
717 Provisions related to legal and other disputes Concept (Monetary) As Of Credit ifrs-full:Provisions
718 Estimated useful lives Concept (Text/String) For Period ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
719 1098 - Disclosure - Accounting Principles and Policies - Summary of Expected Useful Lives of Property Plant and Equipment (Detail) Network

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720 Disclosure of detailed information about property, plant and equipment [table] Table

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721 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
722 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
723 Freehold buildings [member] Member gsk:FreeholdBuildingsMember
724 Leasehold land and buildings [member] Member gsk:LeaseholdLandAndBuildingsMember
725 Plant and machinery [member] Member gsk:PlantAndMachineryMember
726 Equipment and vehicles [member] Member gsk:EquipmentAndVehiclesMember
727 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
728 Useful lives of property plant and equipment Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
729 1099 - Disclosure - Key Accounting Judgements and Estimates - Additional Information (Detail) Network

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730 Disclosure of changes in accounting estimates [table] Table

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731 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
732 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
733 Business combinations [member] Member ifrs-full:BusinessCombinationsMember
734 Novartis [member] Member gsk:NovartisMember
735 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
736 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
737 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
738 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
739 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
740 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
741 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
742 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
743 Trade and other payable [member] Member gsk:TradeAndOtherPayableMember
744 Continuing involvement in derecognised financial assets by type of instrument [axis] Axis ifrs-full:ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis
745 Types of instrument [member] Member ifrs-full:TypesOfInstrumentMember
746 Written put options [member] Member ifrs-full:WrittenPutOptionsMember
747 Disclosure of changes in accounting estimates [line items] LineItems ifrs-full:DisclosureOfChangesInAccountingEstimatesLineItems
748 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
749 Tax charge for the year Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
750 Tax payable, current Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
751 Tax recoverable, current Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssets
752 Tax payable, non-current Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesNoncurrent
753 Uncertain tax position charge Concept (Monetary) For Period Debit gsk:UncertainTaxPositionsRecognised
754 Legal costs Concept (Monetary) For Period Debit gsk:LegalCosts
755 Provision for legal and other disputes Concept (Monetary) As Of Credit ifrs-full:LegalProceedingsProvision
756 Contingent consideration and put option liabilities Concept (Monetary) For Period Credit gsk:GainLossOnContingentConsiderationAndPutOptionLiabilities
757 Contingent consideration liabilities Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
758 Acquisition cost Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
759 Acquisition related net charge Concept (Monetary) For Period Debit ifrs-full:AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
760 Put option recognised Concept (Monetary) For Period Credit gsk:PutOptionRecognised
761 Surplus on defined benefit schemes Concept (Monetary) As Of Debit gsk:DefinedBenefitPlanSurplusNet
762 Percentage of decrease in discount rate Concept (Percent) For Period gsk:PercentageOfDecreaseInDiscountRate
763 Net pension deficit Concept (Monetary) For Period Credit gsk:IncreaseInPlanDeficit
764 Increased annual pension cost Concept (Monetary) For Period Credit gsk:IncreaseInAnnualPensionCost
765 1100 - Disclosure - New Accounting Requirements - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureNewAccountingRequirementsAdditionalInformation
766 Description Of New Accounting Requirements [table] Table

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*

gsk:DescriptionOfNewAccountingRequirementsTable
767 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
768 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
769 Events After Reporting Period [member] Member gsk:EventsAfterReportingPeriodMember
770 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
771 Currently stated [member] Member ifrs-full:RestatedMember
772 IFRS 16 leases [member] Member gsk:IFRS16LeasesMember
773 Description Of New Accounting Requirements [line items] LineItems gsk:DescriptionOfNewAccountingRequirementsLineItems
774 IFRS 16, description Concept (Text/String) For Period ifrs-full:StatementThatLesseeUsesPracticalExpedientsWhenApplyingIFRS16RetrospectivelyToLeasesClassifiedAsOperatingLeasesApplyingIAS17
775 Right of use of assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
776 Lease liability Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
777 Reduction in net assets Concept (Monetary) For Period Debit gsk:IncreaseDecreaseInAssets
778 Reduction in total equity Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInEquity
779 1101 - Disclosure - Exchange Rates - Summary of Currencies Translations and Relevant Exchange Rates (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureExchangeRatesSummaryOfCurrenciesTranslationsAndRelevantExchangeRates
780 Disclosure Of Foreign Exchange Rates [table] Table

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gsk:DisclosureOfForeignExchangeRatesTable
781 Currency [Axis] Axis srt:CurrencyAxis
782 All Currencies [Domain] Member currency:AllCurrenciesDomain
783 USD [member] Member currency:USD
784 Euro [member] Member currency:EUR
785 Yen [member] Member currency:JPY
786 Disclosure of foreign exchange rates [line items] LineItems gsk:DisclosureOfForeignExchangeRatesLineItems
787 Average rates Concept (Decimal) For Period ifrs-full:AverageForeignExchangeRate
788 Period end rates Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
789 1102 - Disclosure - Turnover and Segment Information - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTurnoverAndSegmentInformationAdditionalInformation
790 Disclosure of operating segments [table] Table

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*

ifrs-full:DisclosureOfOperatingSegmentsTable
791 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
792 Customers [member] Member ifrs-full:MajorCustomersMember
793 Wholesalers 1 [member] Member gsk:Wholesalers1Member
794 Wholesalers 2 [member] Member gsk:Wholesalers2Member
795 Wholesalers 3 [member] Member gsk:Wholesalers3Member
796 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
797 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
798 US [member] Member country:US
799 Segments [axis] Axis ifrs-full:SegmentsAxis
800 Segments [member] Member ifrs-full:SegmentsMember
801 Shionogi-ViiV Healthcare [member] Member gsk:ShionogiViivHealthcareMember
802 Consumer Healthcare [member] Member gsk:ConsumerHealthcareMember
803 Pharmaceuticals and Vaccines [member] Member gsk:PharmaceuticalsAndVaccinesMember
804 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
805 Number of reportable operating segments Concept (Integer) For Period gsk:NumberOfReportableOperatingSegments
806 Description of factors used to identify entity's reportable segments Concept (Text/String) For Period ifrs-full:FactorsUsedToIdentifyEntitysReportableSegments
807 Revenue recognised in year from performance obligations satisfied in previous periods Concept (Monetary) For Period Credit ifrs-full:RevenueFromPerformanceObligationsSatisfiedOrPartiallySatisfiedInPreviousPeriods
808 Turnover from changes to estimates of RAR accruals Concept (Monetary) For Period Credit gsk:RevenueFromChangesToEstimatesOfRARAccruals
809 Royalty income Concept (Monetary) For Period Credit ifrs-full:RevenueFromRoyalties
810 Number of wholesalers Concept (Integer) For Period gsk:NumberOfWholesalers
811 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
812 Contingent consideration liability Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
813 Pfizer put option Concept (Monetary) As Of Credit gsk:PutOption
814 Put option liability Concept (Monetary) As Of Credit gsk:PutOptionsLiability
815 1103 - Disclosure - Turnover and Segment Information - Turnover by Segment (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTurnoverAndSegmentInformationTurnoverBySegment
816 Disclosure of operating segments [table] Table

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ifrs-full:DisclosureOfOperatingSegmentsTable
817 Segments [axis] Axis ifrs-full:SegmentsAxis
818 Segments [member] Member ifrs-full:SegmentsMember
819 Pharmaceuticals [member] Member gsk:PharmaceuticalsMember
820 Vaccines [member] Member gsk:VaccinesMember
821 Consumer Healthcare [member] Member gsk:ConsumerHealthcareMember
822 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
823 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
824 Operating Segments [member] Member ifrs-full:OperatingSegmentsMember
825 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
826 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
827 1104 - Disclosure - Turnover and Segment Information - Turnover by Product & Service (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTurnoverAndSegmentInformationTurnoverByProductService
828 Disclosure of products and services [table] Table

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ifrs-full:DisclosureOfProductsAndServicesTable
829 Segments [axis] Axis ifrs-full:SegmentsAxis
830 Segments [member] Member ifrs-full:SegmentsMember
831 Consumer Healthcare [member] Member gsk:ConsumerHealthcareMember
832 Pharmaceuticals [member] Member gsk:PharmaceuticalsMember
833 Vaccines [member] Member gsk:VaccinesMember
834 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
835 Products and services [member] Member ifrs-full:ProductsAndServicesMember
836 Wellness [member] Member gsk:WellnessMember
837 Oral Care [member] Member gsk:OralCareMember
838 Nutrition [member] Member gsk:NutritionMember
839 Skin Health [member] Member gsk:SkinHealthMember
840 Respiratory [member] Member gsk:RespiratoryMember
841 HIV [member] Member gsk:HIVMember
842 Immuno inflammation [member] Member gsk:ImmunoInflammationMember
843 Established Pharmaceuticals [member] Member gsk:EstablishedPharmaceuticalsMember
844 Meningitis [member] Member gsk:MeningitisMember
845 Influenza [member] Member gsk:InfluenzaMember
846 Shingles [member] Member gsk:ShinglesMember
847 Established vaccines [member] Member gsk:EstablishedVaccinesMember
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849 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
850 1105 - Disclosure - Turnover and Segment Information - Segment Profit and Operating Profit (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureTurnoverAndSegmentInformationSegmentProfitAndOperatingProfit
851 Disclosure of operating segments [table] Table

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ifrs-full:DisclosureOfOperatingSegmentsTable
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853 Segments [member] Member ifrs-full:SegmentsMember
854 Pharmaceuticals [member] Member gsk:PharmaceuticalsMember
855 Pharmaceuticals Research and Development [member] Member gsk:PharmaceuticalsResearchAndDevelopmentMember
856 Pharmaceuticals Including Research and Development [member] Member gsk:PharmaceuticalsIncludingResearchAndDevelopmentMember
857 Vaccines [member] Member gsk:VaccinesMember
858 Consumer Healthcare [member] Member gsk:ConsumerHealthcareMember
859 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
860 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
861 Operating Segments [member] Member ifrs-full:OperatingSegmentsMember
862 Corporate and Other Unallocated [member] Member ifrs-full:UnallocatedAmountsMember
863 Other Reconciling Items between Segment Profit and Operating Profit [member] Member ifrs-full:MaterialReconcilingItemsMember
864 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
865 Segment profit Abstract ifrs-full:ProfitLossAbstract
866 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
867 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
868 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
869 Profit on disposal of interest in associates Concept (Monetary) For Period Credit gsk:GainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
870 Share of after tax profits of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
871 Profit before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
872 Taxation Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
873 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
874 Depreciation and amortisation by segment Abstract ifrs-full:DepreciationAndAmortisationExpenseAbstract
875 Total depreciation and amortisation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
876 PP&E, intangible asset and goodwill impairment by segment Abstract ifrs-full:ChangesInIntangibleAssetsAndGoodwillAbstract
877 Total impairment Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
878 PP&E and intangible asset impairment reversals by segment Abstract gsk:ImpairmentReversalsBySegmentAbstract
879 Total impairment reversals Concept (Monetary) For Period Credit ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss
880 Net operating assets Concept (Monetary) As Of Debit gsk:NetOperatingAssets
881 Net debt Concept (Monetary) As Of Credit gsk:DebtNet
882 Investments in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
883 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
884 Current and deferred taxation Concept (Monetary) As Of Debit gsk:CurrentAndDeferredTaxation
885 Assets held for sale (excluding cash and cash equivalents) Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
886 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
887 1106 - Disclosure - Turnover and Segment Information - Summary of Geographical Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTurnoverAndSegmentInformationSummaryOfGeographicalInformation
888 Disclosure of geographical areas [table] Table

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*

ifrs-full:DisclosureOfGeographicalAreasTable
889 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
890 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
891 Customer [member] Member gsk:CustomerMember
892 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
893 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
894 UK [member] Member country:GB
895 US [member] Member country:US
896 Rest of World. [member] Member gsk:RestOfWorldMember
897 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
898 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
899 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOtherThanFinancialInstrumentsDeferredTaxAssetsPostemploymentBenefitAssetsAndRightsArisingUnderInsuranceContracts
900 1107 - Disclosure - Other Operating Income/(Expense) - Information about Other Operating Income Expense (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureOtherOperatingIncomeExpenseInformationAboutOtherOperatingIncomeExpense
901 Implied Table Table

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implied:Table
902 Disclosure of other operating income expense [abstract] Abstract gsk:DisclosureOfOtherOperatingIncomeExpenseAbstract
903 Fair value remeasurements of equity investments under IFRS 9 Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInProfitOrLossFairValueMeasurementEntitysOwnEquityInstruments
904 Disposal of businesses and assets Concept (Monetary) For Period Credit gsk:DisposalOfBusinessesAndAssets
905 Fair value remeasurements on contingent consideration recognised in business combinations Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInContingentLiabilitiesRecognisedInBusinessCombination
906 Remeasurement of ViiV Healthcare put option liabilities and preferential dividends Concept (Monetary) For Period Credit gsk:RemeasurementOfPutOptionLiabilitiesAndPreferentialDividends
907 Remeasurement of Consumer Healthcare put option liability Concept (Monetary) For Period Credit gsk:RemeasurementOfPutOptionLiability
908 Fair value adjustments on derivative financial instruments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnChangeInFairValueOfDerivatives
909 Other (expense)/income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
910 Impairment of available-for-sale equity investments under IAS 39 Concept (Monetary) For Period Debit gsk:ImpairmentOfAvailableForSaleEquityInvestments
911 Disposal of available-for-sale equity investments under IAS 39 Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfInvestments
912 Other operating income expense Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
913 1108 - Disclosure - Other Operating Income/(Expense) - Additional Information (Detail) Network

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914 Disclosure Of Other Operating Income Expense [table] Table

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gsk:DisclosureOfOtherOperatingIncomeExpenseTable
915 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
916 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
917 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
918 Tapinarof [member] Member gsk:TapinarofMember
919 Consumer Tail Brands [member] Member gsk:ConsumerTailBrandsMember
920 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
921 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
922 Vaccines business acquisition [member] Member gsk:VaccinesBusinessAcquisitionMember
923 Disclosure of other operating income expense [line items] LineItems gsk:DisclosureOfOtherOperatingIncomeExpenseLineItems
924 Disposal of businesses and assets Concept (Monetary) For Period Credit gsk:DisposalOfBusinessesAndAssets
925 Fair value remeasurements on contingent consideration Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInContingentLiabilitiesRecognisedInBusinessCombination
926 1109 - Disclosure - Operating Profit - Summary of Information About Profit Loss (Detail) Network

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927 Implied Table Table

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implied:Table
928 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
929 Employee costs (Note 9) Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
930 Advertising Concept (Monetary) For Period Debit ifrs-full:AdvertisingExpense
931 Distribution costs Concept (Monetary) For Period Debit ifrs-full:DistributionCosts
932 Depreciation of property, plant and equipment Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
933 Impairment of property, plant and equipment, net of reversals Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
934 Amortisation of intangible assets Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
935 Impairment of intangible assets, net of reversals Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
936 Net foreign exchange losses Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
937 Inventories: Abstract ifrs-full:ClassesOfInventoriesAbstract
938 Cost of inventories included in cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod
939 Write-down of inventories Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
940 Reversal of prior year write-down of inventories Concept (Monetary) For Period ifrs-full:ReversalOfInventoryWritedown
941 Operating lease rentals: Abstract ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpenseAbstract
942 Minimum lease payments Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
943 Contingent rents Concept (Monetary) For Period Debit ifrs-full:ContingentRentsRecognisedAsExpenseClassifiedAsOperatingLease
944 Sub-lease payments Concept (Monetary) For Period Debit ifrs-full:SubleasePaymentsRecognisedAsExpense
945 Fees payable to the company's auditor and its associates in relation to the Group Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
946 1110 - Disclosure - Operating Profit - Additional Information (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureOperatingProfitAdditionalInformation
947 Disclosure of operating profit [table] Table

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gsk:DisclosureOfOperatingProfitTable
948 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
949 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
950 Liquidation Or Disposal Of Overseas Subsidiary [member] Member gsk:LiquidationOrDisposalOfOverseasSubsidiaryMember
951 Disclosure of Operating Profit [line items] LineItems gsk:DisclosureOfOperatingProfitLineItems
952 Net foreign exchange losses Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
953 Major restructuring costs Concept (Monetary) For Period Debit ifrs-full:ExpenseOfRestructuringActivities
954 1111 - Disclosure - Operating Profit - Summary of Auditors Remuneration (Detail) Network

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955 Disclosure Of Auditors Remuneration [table] Table

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gsk:DisclosureOfAuditorsRemunerationTable
956 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
957 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
958 GLAXOSMITHKLINE PLC [member] Member ifrs-full:ParentMember
959 Subsidiaries [member] Member ifrs-full:SubsidiariesMember
960 Attestation under s.404 of Sarbanes-Oxley Act 2002 [member] Member gsk:AttestationUnderS404OfSarbanesOxleyAct2002Member
961 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
962 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
963 Pension schemes [member] Member ifrs-full:PensionDefinedBenefitPlansMember
964 Disclosure Of Auditors Remuneration [line items] LineItems gsk:DisclosureOfAuditorsRemunerationLineItems
965 Auditor's remuneration [abstract] Abstract ifrs-full:AuditorsRemunerationAbstract
966 Audit Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
967 Taxation compliance Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForTaxServices
968 Taxation advice Concept (Monetary) For Period Debit gsk:AuditorsRemunerationForTaxAdviceServices
969 Other assurance services Concept (Monetary) For Period Debit gsk:AuditorsRemunerationForOtherAssuranceServices
970 All other services Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForOtherServices
971 Auditors remuneration Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
972 1112 - Disclosure - Employee Costs - Summary of Employee Costs (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureEmployeeCostsSummaryOfEmployeeCosts
973 Implied Table Table

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974 Short-term employee benefits expense [abstract] Abstract ifrs-full:ShorttermEmployeeBenefitsExpenseAbstract
975 Wages and salaries Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
976 Social security costs Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
977 Pension and other post-employment costs, including augmentations (Note 28) Concept (Monetary) For Period Debit gsk:PostEmploymentBenefitExpense
978 Cost of share-based incentive plans Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
979 Severance and other costs from integration and restructuring activities Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
980 Employee benefits expense Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
981 1113 - Disclosure - Employee Costs - Summary of Cost of Share-based Incentive Plans (Detail) Network

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982 Expense From Sharebased Payment Transactions With Employees [table] Table

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gsk:ExpenseFromSharebasedPaymentTransactionsWithEmployeesTable
983 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
984 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
985 Share Value Plan [member] Member gsk:ShareValuePlanMember
986 Performance Share Plan [member] Member gsk:PerformanceSharePlansMember
987 Share option plans [member] Member gsk:ShareOptionPlanMember
988 Cash settled and other plans [member] Member gsk:CashSettledAndOtherPlansMember
989 Expense from share based payment transactions with employees [line items] LineItems gsk:ExpenseFromShareBasedPaymentTransactionsWithEmployeesLineItems
990 Cost of share-based incentive plans Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
991 1114 - Disclosure - Employee Costs - Disclosure of Average Monthly Number of Persons Employed by the Group (Including Directors) (Detail) Network

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992 Disclosure of Employee Costs and Numbers [table] Table

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gsk:DisclosureOfEmployeeCostsAndNumbersTable
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994 Segments [member] Member ifrs-full:SegmentsMember
995 Manufacturing [member] Member gsk:ManufacturingMember
996 Selling, general and administration [member] Member gsk:SellingGeneralAndAdministrationMember
997 Research and development [member] Member gsk:ResearchAndDevelopmentMember
998 Disclosure of employee costs and numbers [line items] LineItems gsk:DisclosureOfEmployeeCostsAndNumbersLineItems
999 Average number of employees Concept (Decimal) For Period ifrs-full:AverageNumberOfEmployees
1000 1115 - Disclosure - Employee Costs - Summary of Compensation of the Directors and Senior Management (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureEmployeeCostsSummaryOfCompensationOfTheDirectorsAndSeniorManagement
1001 Implied Table Table

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implied:Table
1002 Employees Benefit [abstract] Abstract gsk:EmployeesBenefitAbstract
1003 Wages and salaries Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1004 Social security costs Concept (Monetary) For Period Debit gsk:KeyManagementPersonnelCompensationSocialSecurityCosts
1005 Pension and other post-employment costs Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
1006 Cost of share-based incentive plans Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1007 Key management personnel compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1008 1116 - Disclosure - Major Restructuring Costs - Additional Information (Detail) Network

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1009 Implied Table Table

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1010 Major Restructuring Costs [abstract] Abstract gsk:MajorRestructuringCostsAbstract
1011 Total restructuring costs Concept (Monetary) For Period Debit gsk:RestructuringCosts1
1012 1117 - Disclosure - Major Restructuring Costs - Summary of Analysis of Costs Charged to Operating Profit (Detail) Network

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1013 Implied Table Table

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1014 Major Restructuring Costs [abstract] Abstract gsk:MajorRestructuringCostsAbstract
1015 Increase in provision for Major restructuring programmes Concept (Monetary) For Period Debit gsk:IncreaseDecreaseInProvisionForMajorRestructuringProgrammes
1016 Amount of provision reversed unused Concept (Monetary) For Period Credit ifrs-full:ReversalOfProvisionsForCostOfRestructuring
1017 Impairment losses recognised Concept (Monetary) For Period Debit ifrs-full:ImpairmentLoss
1018 Other non-cash charges Concept (Monetary) For Period Debit ifrs-full:OtherMaterialNoncashItems
1019 Other cash costs Concept (Monetary) For Period Debit gsk:OtherCostsCashSettlement
1020 Cost charged to operating profit Concept (Monetary) For Period Debit gsk:CostChargedToOperatingProfit
1021 1118 - Disclosure - Major Restructuring Costs - Summary of Major Restructuring Charges (Detail) Network

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1022 Disclosure of restructuring costs [table] Table

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gsk:DisclosureOfRestructuringCostsTable
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1024 Restructuring Costs [domain] Member gsk:RestructuringCostsDomain
1025 Cost of major restructuring [member] Member gsk:CostOfMajorRestructuringMember
1026 Disclosure of restructuring costs [line items] LineItems gsk:DisclosureOfRestructuringCostsLineItems
1027 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
1028 Selling, general and administration Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
1029 Research and development Concept (Monetary) For Period Debit gsk:ResearchAndDevelopmentExpenses
1030 Other operating income/(expense) Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
1031 Cost charged to operating profit Concept (Monetary) For Period Debit gsk:CostChargedToOperatingProfit
1032 1119 - Disclosure - Finance Income - Summary of Finance Income (Detail) Network

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1033 Disclosure Of Financial Income and Expense [table] Table

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gsk:DisclosureOfFinancialIncomeAndExpenseTable
1034 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1035 Currently stated [member] Member ifrs-full:RestatedMember
1036 IFRS9 [member] Member gsk:IFRS9Member
1037 IAS 39 [member] Member gsk:IAS39Member
1038 Disclosure Of Financial Income and Expense [line items] LineItems gsk:DisclosureOfFinancialIncomeAndExpenseLineItems
1039 Financial assets measured at amortised cost Concept (Monetary) For Period Credit ifrs-full:InterestIncomeForFinancialAssetsMeasuredAtAmortisedCost
1040 Financial assets measured at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss
1041 Net gains arising from hedge ineffectiveness on net investment hedges Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnIneffectivenessOfHedgesOfNetInvestmentsInForeignOperations
1042 Cash and cash equivalents Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnCashAndCashEquivalents
1043 Available-for-sale investments Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnAvailableforsaleFinancialAssets
1044 Loans and receivables Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndReceivables
1045 Fair value adjustments on derivatives at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnChangeInFairValueOfDerivatives
1046 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1047 1120 - Disclosure - Finance Expense - Summary of Finance Cost (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureFinanceExpenseSummaryOfFinanceCost
1048 Implied Table Table

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1049 Disclosure of finance expense [abstract] Abstract gsk:DisclosureOfFinanceExpenseAbstract
1050 Finance expense arising on: Abstract ifrs-full:InterestCostsAbstract
1051 Financial liabilities at amortised cost Concept (Monetary) For Period Debit ifrs-full:InterestExpenseForFinancialLiabilitiesNotAtFairValueThroughProfitOrLoss
1052 Derivatives at fair value through profit or loss Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLoss
1053 Net losses arising from: Financial instruments mandatorily measured at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue
1054 Reclassification of hedges from other comprehensive income Concept (Monetary) For Period Debit gsk:ReclassificationAdjustmentsOnHedgesFromOtherComprehensiveIncome
1055 Unwinding of discounts on provisions Concept (Monetary) For Period Debit ifrs-full:ExpenseDueToUnwindingOfDiscountOnProvisions
1056 Other finance expense Concept (Monetary) For Period Credit ifrs-full:OtherFinanceIncomeCost
1057 Finance Costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1058 1121 - Disclosure - Finance Expense - Additional Information (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureFinanceExpenseAdditionalInformation
1059 Implied Table Table

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1060 Disclosure of finance expense [abstract] Abstract gsk:DisclosureOfFinanceExpenseAbstract
1061 Description of financial instrument Concept (Text/String) For Period ifrs-full:DescriptionOfFinancialInstrumentsDesignatedAsHedgingInstrument
1062 Interest paid relating to income taxes Concept (Monetary) For Period Debit gsk:InterestExpensePaid
1063 Interest received relating to income taxes Concept (Monetary) For Period Credit gsk:InterestIncomeEarned
1064 1122 - Disclosure - Associates and Joint Ventures - Summary of After Tax Profits and Losses of Associates and Joint Ventures (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAssociatesAndJointVenturesSummaryOfAfterTaxProfitsAndLossesOfAssociatesAndJointVentures
1065 Disclosure Of Financial Information Of Associates And Joint Ventures [table] Table

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gsk:DisclosureOfFinancialInformationOfAssociatesAndJointVenturesTable
1066 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1067 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1068 Associates [member] Member ifrs-full:AssociatesMember
1069 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1070 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1071 Joint ventures [member] Member ifrs-full:JointVenturesMember
1072 Disclosure of financial information of associates and joint ventures [line items] LineItems gsk:DisclosureOfFinancialInformationOfAssociatesAndJointVenturesLineItems
1073 Share of after tax profits and losses of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
1074 Share of after tax profits and losses of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1075 1123 - Disclosure - Associates and joint ventures - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAssociatesAndJointVenturesAdditionalInformation
1076 Disclosure Of Joint Ventures And Associates [table] Table

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gsk:DisclosureOfJointVenturesAndAssociatesTable
1077 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1078 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1079 Innoviva Inc [member] Member gsk:InnovivaIncMember
1080 Disclosure of joint ventures and associates [line items] LineItems gsk:DisclosureOfJointVenturesAndAssociatesLineItems
1081 Profit after taxation for the year Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1082 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
1083 Sales to associates and joint ventures Concept (Monetary) For Period Debit gsk:SalesToAssociatesAndJointVentures
1084 1124 - Disclosure - Associates and Joint Ventures - Summary of Group Held for Significant Associate (Detail) Network

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*

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1085 Disclosure Of Financial Information Of Associates And Joint Ventures [table] Table

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*

gsk:DisclosureOfFinancialInformationOfAssociatesAndJointVenturesTable
1086 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1087 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1088 Innoviva Inc [member] Member gsk:InnovivaIncMember
1089 Disclosure of financial information of associates and joint ventures [line items] LineItems gsk:DisclosureOfFinancialInformationOfAssociatesAndJointVenturesLineItems
1090 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
1091 Profit after taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1092 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
1093 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
1094 1125 - Disclosure - Associates and Joint Ventures - Summary of Aggregated Financial Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAssociatesAndJointVenturesSummaryOfAggregatedFinancialInformation
1095 Disclosure Of Financial Information Of Associates And Joint Ventures [table] Table

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*

gsk:DisclosureOfFinancialInformationOfAssociatesAndJointVenturesTable
1096 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1097 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1098 Other associates [member] Member gsk:OtherAssociatesMember
1099 Disclosure of financial information of associates and joint ventures [line items] LineItems gsk:DisclosureOfFinancialInformationOfAssociatesAndJointVenturesLineItems
1100 Share of turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
1101 Share of after tax (losses)/profits Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1102 Share of other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
1103 Share of total comprehensive (expense)/income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
1104 1126 - Disclosure - Taxation - Summary of Taxation Charge Based on Profits (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTaxationSummaryOfTaxationChargeBasedOnProfits
1105 Income Tax Expense Benefits [table] Table

*

*

gsk:IncomeTaxExpenseBenefitsTable
1106 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1107 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1108 UK [member] Member country:GB
1109 Rest of World [member] Member ifrs-full:ForeignCountriesMember
1110 Income tax expense benefits [line items] LineItems gsk:IncomeTaxExpenseBenefitsLineItems
1111 Current tax expense (income) and adjustments for current tax of prior periods [abstract] Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
1112 Current tax expense (income) Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
1113 Credit in respect of prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1114 Total current taxation Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
1115 Total deferred taxation Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
1116 Total tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1117 1127 - Disclosure - Taxation - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTaxationAdditionalInformation
1118 Income Tax Expense Benefits [table] Table

*

*

gsk:IncomeTaxExpenseBenefitsTable
1119 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1120 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1121 UK [member] Member country:GB
1122 US [member] Member country:US
1123 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1124 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1125 Overseas [Member] Member gsk:OverseasMember
1126 Income tax expense benefits [line items] LineItems gsk:IncomeTaxExpenseBenefitsLineItems
1127 Payments of corporation tax Concept (Monetary) For Period Credit gsk:PaymentsOfCorporationTax
1128 Average effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
1129 Reassessment of prior year estimate of US Tax Reform Concept (Monetary) For Period Debit gsk:TaxImpactOfUSTaxReform
1130 Provisions For Uncertain Tax Position Concept (Monetary) For Period Credit gsk:ProvisionsForUncertainTaxPosition
1131 Provision for deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1132 Unremitted profits Concept (Monetary) As Of Credit gsk:UnremittedEarnings
1133 Unremitted profits for which deferred tax not provided Concept (Monetary) For Period Debit gsk:UnremittedProfitsForWhichDeferredTaxNotProvided
1134 Deferred tax expense (income) recognised in profit or loss Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1135 Research and development incentives recognised in operating profit Concept (Monetary) For Period Credit gsk:ResearchAndDevelopmentIncentivesRecognisedInOperatingProfit
1136 Deferred tax assets recognized on trading losses Concept (Monetary) For Period Debit gsk:DeferredTaxAssetsRecognizedOnTradingLosses
1137 Foreign tax credits for which deferred tax has not been provided Concept (Monetary) For Period Debit gsk:UnrecognisedDeferredTaxAssetOnForeignTaxCredits
1138 1128 - Disclosure - Taxation - Summary of Reconciliation of Tax Charge Calculated at the UK Statutory Rate on the Group Profit Before Tax with the Actual Tax Charge (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTaxationSummaryOfReconciliationOfTaxChargeCalculatedAtTheUKStatutoryRateOnTheGroupProfitBeforeTaxWithTheActualTaxCharge
1139 Implied Table Table

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*

implied:Table
1140 Disclosure - Taxation - Summary of Reconciliation of Tax Charge Calculated at the UK Statutory Rate on the Group Profit Before Tax with the Actual Tax Charge [Abstract] Abstract gsk:DisclosureTaxationSummaryOfReconciliationOfTaxChargeCalculatedAtTheUKStatutoryRateOnTheGroupProfitBeforeTaxWithTheActualTaxChargeAbstract
1141 Profit before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1142 UK statutory rate of taxation Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1143 Differences in overseas taxation rates Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
1144 Benefit of intellectual property incentives Concept (Monetary) For Period Credit gsk:TaxEffectOfBenefitOfIntellectualPropertyIncentives
1145 R&D credits Concept (Monetary) For Period Credit gsk:TaxEffectOfResearchAndDevelopmentCredits
1146 FV remeasurement of non-taxable put options Concept (Monetary) For Period Debit gsk:TaxEffectOfFairValueRemeasurementOfNonTaxablePutOption
1147 Tax losses where no benefit is recognised Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1148 Permanent differences on disposals and acquisitions Concept (Monetary) For Period Credit gsk:TaxEffectOfPermanentDifferencesOnDisposalsAndAcquisitions
1149 Other permanent differences Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1150 Re-assessments of prior year estimates Concept (Monetary) For Period Credit gsk:TaxEffectOfReassessmentsOfPriorYearEstimates
1151 US and Swiss Tax Reform Concept (Monetary) For Period Debit gsk:TaxEffectOfUSAndSwissTaxReform
1152 Tax charge/tax rate Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1153 UK statutory rate of taxation Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1154 Differences in overseas taxation rates Concept (Percent) For Period ifrs-full:TaxRateEffectOfForeignTaxRates
1155 Benefit of intellectual property incentives Concept (Percent) For Period gsk:TaxRateEffectOfBenefitOfIntellectualPropertyIncentives
1156 R&D credits Concept (Percent) For Period gsk:TaxRateEffectOfResearchAndDevelopmentCredits
1157 FV remeasurement of non-taxable put options Concept (Percent) For Period gsk:TaxRateEffectOfFairValueRemeasurementOfNonTaxablePutOption
1158 Tax losses where no benefit is recognised Concept (Percent) For Period ifrs-full:TaxRateEffectOfTaxLosses
1159 Permanent differences on disposals and acquisitions Concept (Percent) For Period gsk:TaxRateEffectOfPermanentDifferencesOnDisposalsAndAcquisitions
1160 Other permanent differences Concept (Percent) For Period ifrs-full:OtherTaxRateEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1161 Re-assessments of prior year estimates Concept (Percent) For Period gsk:TaxRateEffectOfReassessmentsOfPriorYearEstimates
1162 US and Swiss Tax Reform Concept (Percent) For Period gsk:TaxRateEffectOfUsAndSwissTaxReform
1163 Tax charge/tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
1164 1129 - Disclosure - Taxation - Summary of Tax on Items Charged to Equity and Statement of Comprehensive Income (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureTaxationSummaryOfTaxOnItemsChargedToEquityAndStatementOfComprehensiveIncome
1165 Implied Table Table

*

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implied:Table
1166 Current Tax Relating To Items Charged Or Credited Directly To Equity And Comprehensive Income [abstract] Abstract gsk:CurrentTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAndComprehensiveIncomeAbstract
1167 Deferred taxation Abstract gsk:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAndComprehensiveIncomeAbstract
1168 Share-based payments Concept (Monetary) For Period Debit gsk:DeferredTaxOnShareBasedPaymentsChargedOrCreditedDirectlyToEquityAndComprehensiveIncome
1169 Defined benefit plans Concept (Monetary) For Period Debit gsk:DeferredTaxRelatingToDefinedBenefitPlansChargedOrCreditedDirectlyToComprehensiveIncome
1170 Fair value movements on cash flow hedges Concept (Monetary) For Period Debit gsk:DeferredTaxRelatingToFairValueMovementsOnCashFlowHedgesChargedOrCreditedDirectlyToComprehensiveIncome
1171 Fair value movements on equity investments Concept (Monetary) For Period Debit gsk:DeferredTaxRelatingToFairValueMovementsOnEquityInvestmentsChargedOrCreditedDirectlyToComprehensiveIncome
1172 Total equity and comprehensive income Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
1173 Total (charge)/credit to equity and statement of comprehensive income Concept (Monetary) For Period Debit ifrs-full:CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
1174 Share-based payments Concept (Monetary) For Period Debit gsk:CurrentTaxOnShareBasedPaymentsChargedOrCreditedDirectlyToEquityAndComprehensiveIncome
1175 Defined benefit plans Concept (Monetary) For Period Debit gsk:CurrentTaxOnDefinedBenefitPlansChargedOrCreditedDirectlyToEquityAndComprehensiveIncome
1176 Total equity and comprehensive income Concept (Monetary) For Period Debit ifrs-full:CurrentTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
1177 1130 - Disclosure - Taxation - Summary of Movement in Deferred Tax Assets and Liabilities (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTaxationSummaryOfMovementInDeferredTaxAssetsAndLiabilities
1178 Movement In Deferred Tax Assets And Liabilities [table] Table

*

*

gsk:MovementInDeferredTaxAssetsAndLiabilitiesTable
1179 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
1180 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
1181 Intra group profit [member] Member gsk:IntraGroupProfitMember
1182 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1183 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1184 Pensions and other post-employment benefits [member] Member gsk:PensionsAndOtherPostemploymentBenefitsMember
1185 Tax reforms period of application [axis] Axis gsk:TaxReformsPeriodOfApplicationAxis
1186 Tax reforms period of application [domain] Member gsk:TaxReformsPeriodOfApplicationDomain
1187 Origination and reversal of temporary differences [member] Member gsk:OriginationAndReversalOfTemporaryDifferencesMember
1188 US tax reform [member] Member gsk:USTaxReformMember
1189 Swiss tax reform [member] Member gsk:SwissTaxReformMember
1190 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1191 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1192 Accelerated capital allowances [member] Member gsk:AcceleratedCapitalAllowancesMember
1193 Tax losses [member] Member ifrs-full:UnusedTaxLossesMember
1194 Other temporary differences [member] Member ifrs-full:OtherTemporaryDifferencesMember
1195 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1196 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1197 Intangible assets [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1198 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
1199 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
1200 Contingent Consideration [member] Member gsk:ContingentConsiderationMember
1201 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1202 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1203 Share option and award schemes [member] Member gsk:ShareOptionAndAwardSchemesMember
1204 Movement In Deferred Tax Assets And Liabilities [line items] LineItems gsk:MovementInDeferredTaxAssetsAndLiabilitiesLineItems
1205 Changes in deferred tax liability (asset) [abstract] Abstract ifrs-full:ChangesInDeferredTaxLiabilityAssetAbstract
1206 At 1 January 2017 Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1207 Exchange adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
1208 Credit/(charge) to income statement Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1209 (Charge)/credit to statement of comprehensive income and equity Concept (Monetary) For Period Debit gsk:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAndComprehensiveIncome
1210 Reclassification on disposal Concept (Monetary) For Period Debit gsk:DeferredTaxExpenseIncomeReclassOnDisposal
1211 At 31 December 2017 Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1212 1131 - Disclosure - Taxation - Summary of Net Deferred Tax Asset (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureTaxationSummaryOfNetDeferredTaxAsset
1213 Implied Table Table

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implied:Table
1214 Major components of tax expense (income) [abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1215 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1216 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1217 Total Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1218 1132 - Disclosure - Taxation - Summary of Temporary Difference Unused Tax Losses and Unused Tax Credits (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureTaxationSummaryOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCredits
1219 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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*

ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1220 Maturity [axis] Axis ifrs-full:MaturityAxis
1221 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1222 Within 10 years [member] Member gsk:LaterThanOneYearAndNotLaterThanTenYearMember
1223 Greater Than Ten Years [Member] Member ifrs-full:LaterThanTenYearsMember
1224 Available indefinitely [member] Member gsk:AvailableIndefinitelyMember
1225 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1226 Tax losses Concept (Monetary) For Period Credit gsk:TaxLosses
1227 Unrecognised deferred tax asset Concept (Monetary) For Period Debit gsk:UnrecognisedDeferredTaxAssetOnTradingLosses
1228 Tax losses Concept (Monetary) For Period Debit gsk:CapitalLosses
1229 Capital losses Concept (Monetary) For Period Debit gsk:UnrecognisedDeferredTaxAssetOnCapitalLosses
1230 1133 - Disclosure - Earnings per share - Summary of Basic and Diluted Earnings Per Share (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEarningsPerShareSummaryOfBasicAndDilutedEarningsPerShare
1231 Implied Table Table

*

*

implied:Table
1232 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
1233 Basic earnings per share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
1234 Diluted earnings per share Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
1235 1134 - Disclosure - Earnings per share - Schedule of Numbers of Shares Earnings Per Share (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureEarningsPerShareScheduleOfNumbersOfSharesEarningsPerShare
1236 Implied Table Table

*

*

implied:Table
1237 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
1238 Weighted average number of shares in issue Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
1239 Basic Concept (Shares) For Period ifrs-full:WeightedAverageShares
1240 Dilution for share options and awards Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1241 Diluted Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1242 1135 - Disclosure - Dividends - Summary of Interim Financial Reporting (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureDividendsSummaryOfInterimFinancialReporting
1243 Disclosure of Dividends [table] Table

*

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gsk:DisclosureOfDividendsTable
1244 Maturity [axis] Axis ifrs-full:MaturityAxis
1245 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1246 First interim [member] Member gsk:FirstInterimMember
1247 Second interim [member] Member gsk:SecondInterimMember
1248 Third interim [member] Member gsk:ThirdInterimMember
1249 Fourth interim [member] Member gsk:FourthInterimMember
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1251 Paid Concept (Date) For Period gsk:DividendsPaidDate
1252 Dividend per share (pence) Concept (Share) For Period ifrs-full:DividendsPaidOrdinarySharesPerShare
1253 Total dividend Concept (Monetary) For Period Debit ifrs-full:DividendsPaidOrdinaryShares
1254 1136 - Disclosure - Dividends - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureDividendsAdditionalInformation
1255 Implied Table Table

*

*

implied:Table
1256 Disclosure of Dividends [abstract] Abstract gsk:DisclosureOfDividendsAbstract
1257 Description of compliance with IFRSs applied For interim financial report Concept (Text/String) For Period gsk:DescriptionOfRecognitionOfInterimDividends
1258 1137 - Disclosure - Dividends - Summary of Dividends to Shareholders (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureDividendsSummaryOfDividendsToShareholders
1259 Implied Table Table

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implied:Table
1260 Disclosure of Dividends [abstract] Abstract gsk:DisclosureOfDividendsAbstract
1261 Dividends to shareholders Concept (Monetary) For Period Debit gsk:DividendsRecognisedInYear
1262 1138 - Disclosure - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentSummaryOfPropertyPlantAndEquipment
1263 Disclosure of detailed information about property, plant and equipment [table] Table

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*

ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1264 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1265 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1266 Land and buildings [member] Member ifrs-full:LandAndBuildingsMember
1267 Plant, equipment and vehicles [member] Member gsk:PropertyPlantAndEquipmentAndVehiclesMember
1268 Assets in construction [member] Member ifrs-full:ConstructionInProgressMember
1269 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1270 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1271 Cost [member] Member ifrs-full:GrossCarryingAmountMember
1272 Depreciation and amortisation [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
1273 Impairment [member] Member ifrs-full:AccumulatedImpairmentMember
1274 Depreciation, amortisation, and impairment [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1275 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1276 Property, plant and equipment at beginning of period Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1277 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
1278 Other additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1279 Charge for the year Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1280 Capitalised borrowing costs Concept (Monetary) For Period Debit gsk:PropertyPlantAndEquipmentBorrowingCostsCapitalised
1281 Disposals and write-offs Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
1282 Reclassifications Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
1283 Impairment losses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1284 Reversal of impairments Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1285 Transfer to assets held for sale Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughClassifiedAsHeldForSalePropertyPlantAndEquipment
1286 Property, plant and equipment at end of period Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1287 1139 - Disclosure - Property, Plant and Equipment - Additional Information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformation
1288 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
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1292 Plant, equipment and vehicles under operating leases [member] Member gsk:PlantEquipmentAndVehiclesUnderOperatingLeasesMember
1293 Measurement [axis] Axis ifrs-full:MeasurementAxis
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1304 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
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1306 Weighted average cost of capital pre-tax discount rate percentage Concept (Percent) As Of gsk:WeightedAverageCostOfCapitalPreTaxDiscountRatePercentage
1307 Impairment loss recognised in profit or loss, property, plant and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
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1309 Assets in construction reclassified to intangible assets Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
1310 1140 - Disclosure - Goodwill - Summary of Changes in Goodwill (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureGoodwillSummaryOfChangesInGoodwill
1311 Disclosure of reconciliation of changes in goodwill [table] Table

*

*

ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
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1317 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesGoodwill
1318 Transfer to assets held for sale Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughClassifiedAsHeldForSaleGoodwill
1319 Goodwill Ending Balance Concept (Monetary) As Of Debit ifrs-full:Goodwill
1320 1141 - Disclosure - Goodwill - Summary of Goodwill Allocated to Segments (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureGoodwillSummaryOfGoodwillAllocatedToSegments
1321 Disclosure of reconciliation of changes in goodwill [table] Table

*

*

ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
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1329 1142 - Disclosure - Goodwill - Additional Information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureGoodwillAdditionalInformation
1330 Disclosure of reconciliation of changes in goodwill [table] Table

*

*

ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
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1336 Description of basis on which unit's recoverable amount has been determined Concept (Text/String) For Period ifrs-full:DescriptionOfBasisOnWhichUnitsRecoverableAmountHasBeenDetermined
1337 Discount rate applied to cash flow projections Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1338 Carrying value of assets with indefinite lives Concept (Monetary) As Of Debit gsk:GoodwillWithIndefiniteUsefulLife
1339 1143 - Disclosure - Goodwill - Schedule of Discounted Cash Flow Models Used in Impairment Tests (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureGoodwillScheduleOfDiscountedCashFlowModelsUsedInImpairmentTests
1340 Disclosure of reconciliation of changes in goodwill [table] Table

*

*

ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
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1353 1144 - Disclosure - Other Intangible Assets - Summary of Other Intangible Assets (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherIntangibleAssetsSummaryOfOtherIntangibleAssets
1354 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

*

*

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1375 Capitalised borrowing costs Concept (Monetary) For Period ifrs-full:BorrowingCostsCapitalised
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1383 1145 - Disclosure - Other Intangible Assets - Additional information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherIntangibleAssetsAdditionalInformation
1384 Disclosure of detailed information about intangible assets [table] Table

*

*

ifrs-full:DisclosureOfIntangibleAssetsTable
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1394 Net book value of computer software Concept (Monetary) As Of Debit ifrs-full:ComputerSoftware
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1396 Discount rate equal to post-tax WACC Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1397 Terminal growth rate, estimates of future long-term average growth rate Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1398 1146 - Disclosure - Other Intangible Assets - Schedule of Amortisation and Impairment Losses, Net of Reversals (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureOtherIntangibleAssetsScheduleOfAmortisationAndImpairmentLossesNetOfReversals
1399 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

*

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ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
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1407 Impairment of intangible assets, net of reversals Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
1408 1147 - Disclosure - Other Intangible Assets - Summary of Book Values of Largest Individual Items (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherIntangibleAssetsSummaryOfBookValuesOfLargestIndividualItems
1409 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

*

*

ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
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1424 Other intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1425 1148 - Disclosure - Other Intangible Assets - Summary of Book Values of Major Brands (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherIntangibleAssetsSummaryOfBookValuesOfMajorBrands
1426 Disclosure of detailed information about intangible assets [table] Table

*

*

ifrs-full:DisclosureOfIntangibleAssetsTable
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1434 Sensodyne [member] Member gsk:SensodyneMember
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1444 1149 - Disclosure - Investments in Associates and Joint Ventures - Summary of Investments in Associates and Joint Ventures (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesSummaryOfInvestmentsInAssociatesAndJointVentures
1445 Disclosure of Investments in Associates and Joint Ventures [table] Table

*

*

gsk:DisclosureOfInvestmentsInAssociatesAndJointVenturesTable
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1454 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughForeignExchangeFinancialAssets
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1457 Distributions received Concept (Monetary) For Period Credit gsk:DistributionsReceivedInInvestmentsInAssociatesAndJointVentures
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1460 Ending of investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1461 1150 - Disclosure - Investments in Associates and Joint Ventures - Additional Information (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesAdditionalInformation
1462 Disclosure of Investments in Associates and Joint Ventures [table] Table

*

*

gsk:DisclosureOfInvestmentsInAssociatesAndJointVenturesTable
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1471 Percentage of interest in royalty Concept (Percent) For Period gsk:PercentageOfInterestInRoyalty
1472 Percentage of common stock Concept (Percent) For Period gsk:PercentageOfCommonStock
1473 Market value of investment Concept (Monetary) As Of Debit gsk:MarketValueOfInvestment
1474 1151 - Disclosure - Investments in Associates and Joint Ventures - Summary of Balance Sheet Information (Detail) Network

*

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http://www.gsk.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesSummaryOfBalanceSheetInformation
1475 Disclosure of Investments in Associates and Joint Ventures [table] Table

*

*

gsk:DisclosureOfInvestmentsInAssociatesAndJointVenturesTable
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1483 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1484 Net assets/(liabilities) Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
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1486 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1487 Fair value and other adjustments Concept (Monetary) For Period Debit gsk:FairValueAndOtherAdjustment
1488 Carrying value at 31 December Concept (Monetary) As Of Debit gsk:CarryingValue
1489 1152 - Disclosure - Other Investments - Schedule of Other Investments (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherInvestmentsScheduleOfOtherInvestments
1490 Other investments [table] Table

*

*

gsk:OtherInvestmentsTable
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1493 Investments designated as measured at FVTOCI [member] Member ifrs-full:InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember
1494 Investments measured a FVTPL [member] Member gsk:InvestmentsMeasuredAtFairValueThroughProfitOrLossMember
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1496 Beginning of other investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
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1498 Additions Concept (Monetary) For Period Debit gsk:AdditionsToOtherInvestments
1499 Net fair value movements through Other comprehensive income Concept (Monetary) For Period Debit gsk:NetFairValueMovementsInvestmentsThroughOtherComprehensiveIncome
1500 Net fair value movements through profit or loss Concept (Monetary) For Period Debit gsk:NetFairValueMovementsThroughProfitOrLossOtherInvestments
1501 Impairment losses Concept (Monetary) For Period Debit gsk:ImpairmentLossesRecognisedInOtherInvestments
1502 Disposals and settlements Concept (Monetary) For Period Debit gsk:DisposalsAndSettlementsOtherInvestments
1503 Transfers to Assets held for sale Concept (Monetary) For Period Debit gsk:TransfersToAssetsHeldForSaleOtherInvestments
1504 Ending of other investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
1505 1153 - Disclosure - Other Investments - Additional Information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherInvestmentsAdditionalInformation
1506 Other investments [table] Table

*

*

gsk:OtherInvestmentsTable
1507 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1508 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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1511 Orchard [member] Member gsk:OrchardMember
1512 23 and Me [member] Member gsk:TwentyThreeAndMeMember
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1516 Equity investments measured at fair value through profit or loss (FVTPL) [member] Member gsk:EquityInvestmentsMeasuredAtFairValueThroughProfitOrLossMember
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1518 Listed investments Concept (Monetary) For Period Debit gsk:ListedInvestments
1519 Percentage of common stock held Concept (Percent) For Period gsk:PercentageHeldOfCommonStock
1520 Investment fair value Concept (Monetary) As Of Debit gsk:InvestmentFairValue
1521 Fair value of investment disposed during the year Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeAtDateOfDerecognition
1522 Cumulative gain loss on disposal of investments Concept (Monetary) For Period Credit ifrs-full:CumulativeGainLossOnDisposalOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome
1523 1154 - Disclosure - Other Investments - Schedule of Carrying Value of Other Investments (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherInvestmentsScheduleOfCarryingValueOfOtherInvestments
1524 Implied Table Table

*

*

implied:Table
1525 Other investments 1 [abstract] Abstract gsk:OtherInvestments1Abstract
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1527 Cumulative impairments recognised in the income statement Concept (Monetary) For Period Credit gsk:CumulativeImpairmentsRecognisedInIncomeStatement
1528 Subsequent fair value increases Concept (Monetary) For Period Debit gsk:IncreaseDecreaseInSubsequentFairValue
1529 Carrying value, ending balance Concept (Monetary) As Of Debit gsk:CarryingValueOfImpairedInvestments
1530 1155 - Disclosure - Other Non-Current Assets - Summary of Other Non-Current Assets (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureOtherNonCurrentAssetsSummaryOfOtherNonCurrentAssets
1531 Implied Table Table

*

*

implied:Table
1532 Miscellaneous non-current assets [abstract] Abstract ifrs-full:MiscellaneousNoncurrentAssetsAbstract
1533 Amounts receivable under insurance contracts Concept (Monetary) As Of Debit gsk:ReceivablesRelatedToInsuranceContracts
1534 Pension schemes in surplus Concept (Monetary) As Of Debit ifrs-full:NoncurrentRecognisedAssetsDefinedBenefitPlan
1535 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentReceivables
1536 Total Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1537 1156 - Disclosure - Other Non-Current Assets - Additional Information (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureOtherNonCurrentAssetsAdditionalInformation
1538 Disclosure Of Other Non-current Assets [table] Table

*

*

gsk:DisclosureOfOtherNoncurrentAssetsTable
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1544 Financial Assets at Fair Value Through Profit or Loss, Mandatory Measured at Fair Value, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
1545 Remaining Balance [member] Member gsk:RemainingBalanceMember
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1548 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1549 1157 - Disclosure - Inventories - Summary of Inventories (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureInventoriesSummaryOfInventories
1550 Implied Table Table

*

*

implied:Table
1551 Classes of current inventories [abstract] Abstract ifrs-full:ClassesOfInventoriesAbstract
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1553 Work in progress Concept (Monetary) As Of Debit ifrs-full:WorkInProgress
1554 Finished goods Concept (Monetary) As Of Debit ifrs-full:FinishedGoods
1555 Total Concept (Monetary) As Of Debit ifrs-full:Inventories
1556 1158 - Disclosure - Trade and Other Receivables - Summary of Trade and Other Receivables (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureTradeAndOtherReceivablesSummaryOfTradeAndOtherReceivables
1557 Implied Table Table

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*

implied:Table
1558 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
1559 Trade receivables, net of loss allowance Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
1560 Accrued income Concept (Monetary) As Of Debit ifrs-full:AccruedIncome
1561 Other prepayments Concept (Monetary) As Of Debit ifrs-full:Prepayments
1562 Interest receivable Concept (Monetary) As Of Debit ifrs-full:InterestReceivable
1563 Employee loans and advances Concept (Monetary) As Of Debit gsk:EmployeeLoansAndAdvances
1564 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
1565 Total trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
1566 1159 - Disclosure - Trade and Other Receivables - Additional Information (Detail) Network

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*

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1567 Disclosure of Trade and Other Receivables [table] Table

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*

gsk:DisclosureOfTradeAndOtherReceivablesTable
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1569 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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1571 Credit impairment of financial instruments [axis] Axis ifrs-full:CreditImpairmentOfFinancialInstrumentsAxis
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1573 Financial instruments credit-impaired [member] Member ifrs-full:FinancialInstrumentsCreditimpairedMember
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1579 Financial Assets at Fair Value Through Profit or Loss, Mandatory Measured at Fair Value, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
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1583 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
1584 Trade receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
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1586 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1587 Expected credit loss allowance Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsWithModifiedContractualCashFlowsWhileLossAllowanceMeasuredAtLifetimeExpectedCreditLossesForWhichLossAllowanceChangedDuringReportingPeriodTo12monthExpectedCreditLossesGrossCarryingAmount
1588 1160 - Disclosure - Trade and Other Receivables - Summary of Loss Allowance (Detail) Network

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*

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1589 Disclosure of Trade and Other Receivables [table] Table

*

*

gsk:DisclosureOfTradeAndOtherReceivablesTable
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1592 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
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1594 Implementation of IFRS 9 Concept (Monetary) For Period Debit gsk:AdjustmentForAdoptionOfIFRS9
1595 Beginning balance Concept (Monetary) As Of Debit gsk:ExpectedCreditLossAllowance
1596 Exchange adjustments Concept (Monetary) For Period Debit gsk:ExpectedCreditLossAllowanceExchangeAdjustments
1597 Charge for the year Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInExpectedCreditLossesAllowance
1598 Subsequent recoveries of amounts provided for Concept (Monetary) For Period Debit gsk:SubsequentRecoveriesOfAmountsProvidedForExpectedCreditLossAllowance
1599 Utilised Concept (Monetary) For Period Debit gsk:ExpectedCreditLossAllowanceUtilised
1600 Ending balance Concept (Monetary) As Of Debit gsk:ExpectedCreditLossAllowance
1601 1161 - Disclosure - Cash and cash equivalents - Summary of Cash and Cash Equivalents (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureCashAndCashEquivalentsSummaryOfCashAndCashEquivalents
1602 Implied Table Table

*

*

implied:Table
1603 Cash and cash equivalents [abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
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1605 Short-term deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
1606 Total cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1607 1162 - Disclosure - Cash and cash equivalents - Additional Information (Detail) Network

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*

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1608 Implied Table Table

*

*

implied:Table
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1610 Cash and cash equivalents reported in assets held for sale Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale
1611 Cash and cash equivalents not available for general use Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsHeldByEntityUnavailableForUseByGroup
1612 1163 - Disclosure - Assets Held for Sale - Summary of Assets Held for Sale (Detail) Network

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*

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1613 Assets Held For Sale [table] Table

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*

gsk:AssetsHeldForSaleTable
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1619 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
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1621 Inventory Concept (Monetary) As Of Debit ifrs-full:Inventories
1622 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
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1624 Total assets held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
1625 1164 - Disclosure - Assets Held for Sale - Additional Information (Detail) Network

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*

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1626 Disclosure of detailed information about intangible assets [table] Table

*

*

ifrs-full:DisclosureOfIntangibleAssetsTable
1627 Assets and liabilities classified as held for sale [axis] Axis ifrs-full:AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis
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1634 Financial assets written down to fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
1635 1165 - Disclosure - Trade and Other Payables - Summary of Trade and Other Payables (Detail) Network

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*

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1636 Disclosure of trade and other payables [table] Table

*

*

gsk:DisclosureOfTradeAndOtherPayablesTable
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1642 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToTradeSuppliers
1643 Wages and salaries Concept (Monetary) As Of Credit gsk:WagesAndSalariesPayable
1644 Social security Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
1645 Put option payable Concept (Monetary) As Of Credit gsk:PutOptionPayable
1646 Other payables Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1647 Deferred income Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
1648 Customer return and rebate accruals Concept (Monetary) As Of Credit gsk:CustomerReturnAndRebateAccruals
1649 Other accruals Concept (Monetary) As Of Credit gsk:OtherAccruals
1650 Total trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1651 1166 - Disclosure - Trade and Other Payables - Additional Information (Detail) Network

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*

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1652 Disclosure of trade and other payables [table] Table

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*

gsk:DisclosureOfTradeAndOtherPayablesTable
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1660 Geographical [Domain] Member srt:SegmentGeographicalDomain
1661 India [member] Member country:IN
1662 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
1663 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
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1667 Revenue recognized in deferred income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
1668 Revenue recognized related to proceeds from a site disposal Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations
1669 Customer return and rebate accruals Concept (Monetary) As Of Credit gsk:CustomerReturnAndRebateAccruals
1670 1167 - Disclosure - Trade and Other Payables - Summary of Increase/(Decrease) in Financial Liability and Loss/(Gain) in Income Statement (Detail) Network

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1671 Disclosure of information about activities subject to rate regulation [table] Table

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*

ifrs-full:DisclosureOfInformationAboutActivitiesSubjectToRateRegulationTable
1672 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
1673 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
1674 Pfizer put option [member] Member gsk:PfizerPutOptionMember
1675 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
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1677 10% increase in sales forecasts or sales multiple applied [member] Member gsk:CurrencyRiskTenPercentageIncreaseInSalesForecastsOrSalesMultipleAppliedMember
1678 10% decrease in sales forecasts or sales multiple applied [member] Member gsk:CurrencyRiskTenPercentageDecreaseInSalesForecastsOrSalesMultipleAppliedMember
1679 10 cent appreciation of the US Dollar [member] Member gsk:CurrencyRiskTenCentAppreciationOfUSDollarMember
1680 10 cent depreciation of US Dollar [member] Member gsk:CurrencyRiskTenCentDepreciationOfUSDollarMember
1681 10 cent appreciation of the Euro [member] Member gsk:CurrencyRiskTenCentAppreciationOfEuroMember
1682 10 cent depreciation of Euro [member] Member gsk:CurrencyRiskTenCentDepreciationOfEuroMember
1683 Disclosure of information about activities subject to rate regulation [line items] LineItems ifrs-full:DisclosureOfInformationAboutActivitiesSubjectToRateRegulationLineItems
1684 Increase/(decrease) in financial liability Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInFinancialLiability
1685 Loss/(gain) in Income statement Concept (Monetary) For Period Debit gsk:LossGainInIncomeStatement
1686 1168 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Pension and Other Post-employment Costs (Detail) Network

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*

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1687 Disclosure of pension and other post employment plan [table] Table

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*

gsk:DisclosureOfPensionAndOtherPostEmploymentPlanTable
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1691 US Defined Benefit Plans [member] Member gsk:UsDefinedBenefitPlansMember
1692 Other overseas pension schemes [member] Member gsk:OtherOverseasPensionPlansMember
1693 Unfunded post retirement healthcare schemes [member] Member gsk:UnfundedPostRetirementPensionPlansMember
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1695 Unfunded defined benefit pension plan [member] Member gsk:UnfundedDefinedBenefitPensionPlanMember
1696 Defined benefit pension and post-retirement healthcare scheme. [member] Member gsk:DefinedBenefitPensionAndPostretirementHealthcareSchemeMember
1697 Defined benefit schemes [member] Member gsk:DefinedBenefitSchemesMember
1698 Defined contribution pension scheme [member] Member gsk:DefinedContributionPensionSchemeMember
1699 Disclosure of pension and other post employment plan [line items] LineItems gsk:DisclosureOfPensionAndOtherPostEmploymentPlanLineItems
1700 Pension and other post-employment cost Analysed Concept (Monetary) For Period Debit gsk:DisclosureOfDefinedContributionPlans
1701 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
1702 Selling, general and administration Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
1703 Research and development Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
1704 Defined benefit pension and post retirement cost Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
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1706 Pension and other post-employment cost Analysed Concept (Monetary) For Period Debit gsk:PostemploymentBenefitExpenseDefinedBenefitPlansAnalysed
1707 1169 - Disclosure - Pensions and Other Post-employment Benefits - Additional Information (Detail) Network

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1708 Disclosure of Pensions and Other Post-employment Benefits [table] Table

*

*

gsk:DisclosureOfPensionsAndOtherPostemploymentBenefitsTable
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1710 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
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1719 Pension schemes [member] Member ifrs-full:PensionDefinedBenefitPlansMember
1720 Post-retirement benefits [member] Member gsk:PostretirementBenefitsMember
1721 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1722 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1723 2026 and thereafter [member] Member gsk:TwoThousandTwentySixAndThereafterMember
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1725 Long term rate of improvement per year Concept (Percent) For Period gsk:MortalityProjectionsModelLongtermImprovementParameterPerYearPercentage
1726 Percentage allocated to return seeking assets Concept (Percent) For Period gsk:AllocationToReturnSeekingAssets
1727 Percentage allocated to liability matching assets Concept (Percent) For Period gsk:AllocationToLiabilityMatchingAssets
1728 GMP costs included in past service costs Concept (Monetary) For Period Debit gsk:GuaranteedMinimumPensionEqualisationCostsIncludedInPastServiceCosts
1729 Augmentation costs included in past service costs Concept (Monetary) For Period Debit gsk:AugmentationCostsIncludedInPastServiceCosts
1730 Augmentation costs arising from major restructuring programmes Concept (Monetary) For Period Debit gsk:AugmentationCostsFromRestructuringProgrammes
1731 Loans on structured debt amount contributed to fair value of plan assets Concept (Monetary) As Of Credit gsk:LoansOnStructuredDebtAmountContributedToFairValueOfPlanAssets
1732 Special contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1733 Payment due, 2019 Concept (Monetary) For Period Credit gsk:ContributionsToEliminateThePensionDeficitPaymentsWithInOneYear
1734 Employer contributions Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1735 Assumption for future medical inflation Concept (Percent) As Of gsk:ActuarialAssumptionOfExpectedRatesOfMedicalInflation
1736 US post retirement healthcare scheme obligation Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1737 1170 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Average Life Expectancy Assumed (Detail) Network

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1738 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
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1740 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1741 UK [member] Member country:GB
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1743 Maturity [axis] Axis ifrs-full:MaturityAxis
1744 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
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1746 Projected at 2038 [member] Member gsk:ProjectedPeriodMember
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1748 Male Years Concept (xbrli:durationItemType) For Period gsk:MalePensionersAverageLifeExpectancyAtSixty
1749 Female Years Concept (xbrli:durationItemType) For Period gsk:FemalePensionersAverageLifeExpectancyAtSixty
1750 1171 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Financial Assumptions in Assessing Defined Benefit Liabilities (Detail) Network

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1751 Disclosure of defined benefit plan actuarial assumptions [table] Table

*

*

gsk:DisclosureOfDefinedBenefitPlanActuarialAssumptionsTable
1752 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1753 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1754 UK [member] Member country:GB
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1756 Rest of World. [member] Member gsk:RestOfWorldMember
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1758 Rate of increase of future earnings Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
1759 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
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1761 Cash balance credit/conversion rate Concept (Percent) For Period gsk:ActuarialAssumptionOfCashBalanceCreditRate
1762 Inflation rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
1763 1172 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Amounts Recorded in Income Statement and Statement of Comprehensive Income Related to Defined Benefit Pension and Post-retirement Healthcare Schemes (Detail) Network

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1764 Disclosure Of Defined Benefit Pension And Post Retirement [table] Table

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gsk:DisclosureOfDefinedBenefitPensionAndPostRetirementTable
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1766 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
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1783 Net operating cost Concept (Monetary) For Period Debit gsk:NetOperatingChargeForPensionsAndOtherPostRetirementBenefits
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1785 1173 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Balance Sheet Presentation of Group Defined Benefit Pension Schemes and Other Post-retirement Benefits (Detail) Network

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1786 Disclosure Of Defined Benefit Pension And Post Retirement [table] Table

*

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gsk:DisclosureOfDefinedBenefitPensionAndPostRetirementTable
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1797 Post-retirement benefits/Pension schemes in deficit and surplus Concept (Monetary) As Of Debit ifrs-full:NoncurrentRecognisedAssetsDefinedBenefitPlan
1798 Post-retirement benefits/Pension schemes in deficit and surplus Concept (Monetary) As Of Credit gsk:OtherLiabilitiesNetAssetHeldForSaleDefinedBenefitPlan
1799 Post-retirement benefits/Pension schemes in deficit and surplus Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
1800 Benefit plans Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
1801 1174 - Disclosure - Pensions and Other Post-employment Benefits - Fair Values of Assets and Liabilities of UK and US Defined Benefit Pension Schemes Together with Aggregated Data for Other Defined Benefit Pension Schemes in Group (Detail) Network

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1802 Disclosure Of Defined Benefit Pension And Post Retirement [table] Table

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1804 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1805 UK [member] Member country:GB
1806 US [member] Member country:US
1807 Rest of World. [member] Member gsk:RestOfWorldMember
1808 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1809 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1810 Group [member] Member gsk:GroupMember
1811 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
1812 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
1813 Other Noncurrent Assets [member] Member gsk:OtherNoncurrentAssetsMember
1814 Pensions and other post-employment benefits [member] Member gsk:PensionsAndOtherPostemploymentBenefitsMember
1815 Disclosure Of Defined Benefit Pension And Post Retirement [line items] LineItems gsk:DisclosureOfDefinedBenefitPensionAndPostRetirementLineItems
1816 Equities, listed Concept (Monetary) As Of Debit gsk:EquityInstrumentsAmountContributedToFairValueOfPlanAssetsListed
1817 Equity, unlisted Concept (Monetary) As Of Debit gsk:EquityInstrumentsAmountContributedToFairValueOfPlanAssetsUnlisted
1818 Multi-asset funds Concept (Monetary) As Of Debit gsk:MultiAssetFunds
1819 Property, listed Concept (Monetary) As Of Debit gsk:PropertyAmountContributedToFairValueOfPlanAssetsListed
1820 Property, unlisted Concept (Monetary) As Of Debit gsk:PropertyAmountContributedToFairValueOfPlanAssetsUnlisted
1821 Corporate bonds, listed Concept (Monetary) As Of Debit gsk:CorporateBondsContributedToFairValueOfPlanAssetsListed
1822 Corporate bonds, unlisted Concept (Monetary) As Of Debit gsk:CorporateBondsContributedToFairValueOfPlanAssetsUnlisted
1823 Government bonds, listed Concept (Monetary) As Of Debit gsk:GovernmentBondsContributedToFairValueOfPlanAssetsListed
1824 Insurance contracts Concept (Monetary) As Of Debit gsk:InsuranceContractsAmountContributedToFairValueOfPlanAssets
1825 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssetsAmountContributedToFairValueOfPlanAssets
1826 Fair value of assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1827 Present value of scheme obligations Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1828 Net surplus/(obligation) Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
1829 Actual return on plan assets Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1830 1175 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Movements in Fair Values of Assets (Detail) Network

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1831 Disclosure Of Defined Benefit Pension And Post Retirement [table] Table

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1833 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1834 Pension schemes [member] Member ifrs-full:PensionDefinedBenefitPlansMember
1835 Post-retirement benefits [member] Member gsk:PostretirementBenefitsMember
1836 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1837 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1838 UK [member] Member country:GB
1839 US [member] Member country:US
1840 Rest of World. [member] Member gsk:RestOfWorldMember
1841 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1842 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1843 Plan Assets [Member] Member ifrs-full:PlanAssetsMember
1844 Disclosure Of Defined Benefit Pension And Post Retirement [line items] LineItems gsk:DisclosureOfDefinedBenefitPensionAndPostRetirementLineItems
1845 Assets, beginning balance Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1846 Obligations beginning balance Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1847 Exchange adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
1848 Service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1849 Past service cost/(credit) Concept (Monetary) For Period Credit ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
1850 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1851 Expenses Concept (Monetary) As Of Debit gsk:ExpensesNetDefinedBenefitLiabilityAsset
1852 Settlements and curtailments Concept (Monetary) For Period Debit ifrs-full:GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1853 Remeasurement Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1854 Employer contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1855 Scheme participants' contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
1856 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1857 Assets, ending balance Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1858 Obligations ending balance Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1859 1176 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Analysis of Defined Benefit Pension Obligation (Detail) Network

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1860 Disclosure of defined benefit plans [table] Table

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1862 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1863 Funded [member] Member ifrs-full:WhollyOrPartlyFundedDefinedBenefitPlansMember
1864 Unfunded [member] Member ifrs-full:WhollyUnfundedDefinedBenefitPlansMember
1865 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1866 Defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1867 1177 - Disclosure - Pensions and Other Post-employment Benefits - Summary of Movement in Net Defined Benefit Liability (Detail) Network

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1868 Implied Table Table

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1869 Disclosure of defined benefit plans [abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
1870 Beginning of net defined benefit liability Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1871 Exchange adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
1872 Service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1873 Past service cost Concept (Monetary) For Period Credit ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
1874 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1875 Settlements and curtailments Concept (Monetary) For Period Debit ifrs-full:GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1876 Remeasurements: Abstract ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract
1877 Return on plan assets, excluding amounts included in interest Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1878 Gain/(loss) from change in demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
1879 Gain/(loss) from change in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1880 Experience (losses)/gains Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1881 Employer contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1882 Expenses Concept (Monetary) For Period Debit gsk:AdjustmentsInExpensesNetDefinedBenefitLiabilityAsset
1883 Ending of net defined benefit liability Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1884 1178 - Disclosure - Pensions and Other Post-Employment Benefits - Summary of Remeasurements Within Post-Retirement Benefits (Detail) Network

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1885 Disclosure of net defined benefit liability (asset) [table] Table

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1886 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1887 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1888 Post-retirement benefits [member] Member gsk:PostretirementBenefitsMember
1889 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1890 Gain from change in demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
1891 Gain/(loss) from change in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1892 Experience gains Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1893 Total Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1894 1179 - Disclosure - Pensions and Other Post-Employment Benefits - Summary of Defined Benefit Pension Obligation Analysed by Membership Category (Detail) Network

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1895 Disclosure of defined benefit plans [table] Table

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ifrs-full:DisclosureOfDefinedBenefitPlansTable
1896 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1897 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1898 Active [member] Member gsk:DefinedBenefitObligationActiveMember
1899 Retired [member] Member gsk:DefinedBenefitObligationRetiredMember
1900 Deferred [member] Member gsk:DefinedBenefitObligationDeferredMember
1901 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1902 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1903 Pension schemes [member] Member ifrs-full:PensionDefinedBenefitPlansMember
1904 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1905 Defined benefit pension obligation analysed by membership category Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1906 1180 - Disclosure - Pensions and Other Post-Employment Benefits - Summary of Post-Retirement Benefit Obligation Analysed by Membership Category (Detail) Network

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1907 Disclosure of defined benefit plans [table] Table

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1908 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1909 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1910 Active [member] Member gsk:DefinedBenefitObligationActiveMember
1911 Retired [member] Member gsk:DefinedBenefitObligationRetiredMember
1912 Deferred [member] Member gsk:DefinedBenefitObligationDeferredMember
1913 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1914 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1915 Post-retirement benefits [member] Member gsk:PostretirementBenefitsMember
1916 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1917 Post-retirement benefit obligation analysed by membership category Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1918 1181 - Disclosure - Pensions and Other Post-Employment Benefits - Summary of Weighted Average Duration Defined Benefit Obligation (Detail) Network

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1919 Disclosure of Information About Maturity Profile of Defined Benefit Obligation [table] Table

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1920 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1921 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1922 Pension schemes [member] Member ifrs-full:PensionDefinedBenefitPlansMember
1923 Post retirement benefit [Member] Member gsk:PostRetirementBenefitMember
1924 Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items] LineItems gsk:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationLineItems
1925 Weighted average duration of the defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
1926 1182 - Disclosure - Pensions and Other Post-Employment Benefits - Summary of Changes in Assumptions Used on Benefit Obligations, Defined Benefit Pension and Post Retirement Costs (Details) (Detail) Network

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1927 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1928 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1929 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1930 Actuarial assumption of discount rates [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
1931 Actuarial assumption of life expectancy rates [Member] Member gsk:ActuarialAssumptionOfLifeExpectancyRatesMember
1932 Actuarial assumption for future healthcare inflation [member] Member gsk:ActuarialAssumptionForFutureHealthcareInflationMember
1933 Actuarial assumption of expected rates of inflation [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflationMember
1934 Disclosure of Sensitivity Analysis for Actuarial Assumptions [Line Items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1935 Increase in annual pension cost Concept (Monetary) For Period Credit gsk:IncreaseInAnnualPensionCost
1936 Increase/Decrease in annual post-retirement benefits cost Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInAnnualPostretirementBenefitsCost
1937 Increase in pension obligation Concept (Monetary) For Period Credit gsk:IncreaseDecreasePensionObligations
1938 Increase in post-retirement benefits obligation Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInPostretirementBenefitsObligation
1939 1183 - Disclosure - Pensions and Other Post-Employment Benefits - Summary of Changes in Assumptions Used on Benefit Obligations, Defined Benefit Pension and Post Retirement Costs (Details) (Parenthetical) (Detail) Network

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1940 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1941 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1942 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1943 Actuarial assumption of discount rates [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
1944 Actuarial assumption of life expectancy rates [Member] Member gsk:ActuarialAssumptionOfLifeExpectancyRatesMember
1945 Actuarial assumption for future healthcare inflation [member] Member gsk:ActuarialAssumptionForFutureHealthcareInflationMember
1946 Actuarial assumption of expected rates of inflation [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflationMember
1947 Disclosure of Sensitivity Analysis for Actuarial Assumptions [Line Items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1948 Decrease in discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1949 Increase in life expectancy Concept (xbrli:durationItemType) For Period gsk:ActuarialAssumptionOfLifeExpectancy
1950 Increase in rate of future healthcare inflation Concept (Percent) As Of gsk:ActuarialAssumptionForRateOfFutureHealthcareInflation
1951 Increase in inflation Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
1952 1184 - Disclosure - Other Provisions - Summary of Other Provisions (Detail) Network

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1953 Disclosure of other provisions [table] Table

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1954 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1955 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1956 Legal and other disputes [member] Member gsk:LegalAndOtherDisputesMember
1957 Major Restructuring Programmes [Member] Member ifrs-full:RestructuringProvisionMember
1958 Employee Related Provisions [Member] Member gsk:EmployeeRelatedProvisionsMember
1959 Other Provision [Member] Member gsk:OtherProvisionMember
1960 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1961 Other provisions, beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1962 Exchange adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
1963 Charge for the year Concept (Monetary) For Period Credit ifrs-full:AdditionalProvisionsOtherProvisions
1964 Reversed unused Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
1965 Unwinding of discount Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions
1966 Utilised Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1967 Reclassifications and other movements Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesOtherProvisions
1968 Transfer to Pension obligations Concept (Monetary) For Period Debit gsk:TransferToPensionObligations
1969 Other provisions, ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1970 To be settled within one year Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
1971 To be settled after one year Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
1972 Other provisions Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1973 1185 - Disclosure - Other provisions - Additional Information (Detail) Network

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1974 Disclosure of other provisions [table] Table

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1975 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1976 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1977 Legal and other disputes [member] Member gsk:LegalAndOtherDisputesMember
1978 Title of individual 1 [axis] Axis gsk:TitleOfIndividual1Axis
1979 Government Grants [domain] Member gsk:GovernmentGrantsDomain
1980 Disabled employees [member] Member gsk:DisabledEmployeesMember
1981 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1982 Charges on other provisions Concept (Monetary) For Period Credit gsk:AdditionalProvisionsNetOfReversalsAndRecoveriesOtherProvisions
1983 Discount on the provisions Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
1984 Short term legal proceedings Concept (Monetary) As Of Credit ifrs-full:ShorttermLegalProceedingsProvision
1985 Legal proceedings and other disputes provision estimated Concept (Monetary) As Of Credit gsk:LegalProceedingsAndOtherDisputesProvisionEstimated
1986 Pension augmentations arising from staff redundancies Concept (Monetary) As Of Debit gsk:PensionObligationProvisions
1987 Period for amounts provided are expected to be utilised Concept (xbrli:durationItemType) For Period gsk:PeriodForTheAmountToBeUtilised
1988 Provision for employee benefits Concept (Monetary) As Of Credit ifrs-full:ProvisionsForEmployeeBenefits
1989 Provision for employee benefits Concept (Monetary) For Period Debit gsk:InsuranceProvisions
1990 Onerous property lease provisions Concept (Monetary) As Of Credit ifrs-full:OnerousContractsProvision
1991 1186 - Disclosure - Other Non-current Liabilities - Summary of Other Noncurrent Liabilities (Detail) Network

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1992 Implied Table Table

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1993 Other non-current liabilities [abstract] Abstract gsk:OtherNoncurrentLiabilitiesAbstract
1994 Accruals Concept (Monetary) As Of Credit ifrs-full:Accruals
1995 Deferred Income Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
1996 Other payables Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentPayables
1997 Other noncurrent liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
1998 1187 - Disclosure - Net Debt - Schedule of Current Assets, Short and Long Term Borrowings (Detail) Network

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1999 Disclosure of debt [Table] Table

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2000 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
2001 Financial Instruments, Class [Member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
2002 Net debt [member] Member gsk:Debt1Member
2003 Entity Listings, Exchange [Axis] Axis dei:EntityListingsExchangeAxis
2004 Exchange [Domain] Member dei:ExchangeDomain
2005 New York Stock Exchange [member] Member gsk:NewYorkStockExchangeMember
2006 London Stock Exchange [member] Member gsk:LondonStockExchangeMember
2007 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2008 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2009 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
2010 5.650% US$ US Medium Term Note 2018 [member] Member gsk:FivePointSixFivePercentUsMediumTermNoteTwoThousandEighteenMember
2011 0.625% European Medium Term Notes 2019 [member] Member gsk:ZeroPointSixTwoFivePercentEuropeanMediumTermNotesTwoThousandNineteenMember
2012 EURIBOR +0.20% European Medium Term Note 2020 [member] Member gsk:EURIBORPlusZeroPointTwoZeroPercentageEuropeanMediumTermNoteTwoThousandTwentyMember
2013 0.000% European Medium Term Note 2020 [member] Member gsk:ZeroPercentEuropeanMediumTermNotesTwoThousandTwentyMember
2014 3.125% US$ US Medium Term Note 2021 [member] Member gsk:ThreePointOneTwoFivePercentageUSMediumTermNoteTwoThousandTwentyOneMember
2015 LIBOR +0.35% US$ US Medium Term Note 2021 [member] Member gsk:LIBORPlusZeroPointThreeFivePercentageUSMediumTermNoteTwoThousandTwentyOneMember
2016 2.850% US$ US Medium Term Note 2022 [Member] Member gsk:TwoPointEightFivePercentUsMediumTermNoteTwoThousandTwentyTwoMember
2017 2.800% US$ US Medium Term Note 2023 [member] Member gsk:TwoPointEightPercentageUSMediumTermNoteTwoThousandTwentyThreeMember
2018 3.375% US$ US Medium Term Note 2023 [member] Member gsk:ThreePointThreeSevenFivePercentageUSMediumTermNoteTwoThousandTwentyThreeMember
2019 1.375% European Medium Term Notes 2024 [Member] Member gsk:OnePointThreeSevenFivePercentEuropeanMediumTermNotesTwoThousandTwentyFourMember
2020 4.000% European Medium Term Note 2025 [Member] Member gsk:FourPointZeroZeroPercentEuropeanMediumTermNoteTwoThousandTwentyFiveMember
2021 3.625% US$ US Medium Term Note 2025 [member] Member gsk:ThreePointSixTwoFivePercentUsMediumTermNoteTwoThousandTwentyFiveMember
2022 1.000% European Medium Term Note 2026 [Member] Member gsk:OnePercentEuropeanMediumTermNotesTwoThousandTwentySixMember
2023 1.250% European Medium Term Note 2026 [member] Member gsk:OnePointTwoFivePercentageEuropeanMediumTermNoteTwoThousandTwentySixMember
2024 3.375% European Medium Term Note 2027 [Member] Member gsk:ThreePointThreeSevenFivePercentEuropeanMediumTermNoteTwoThousandTwentySevenMember
2025 3.875% US$ US Medium Term Note 2028 [member] Member gsk:ThreePointEightSevenFivePercentageUSMediumTermNoteTwoThousandTwentyEightMember
2026 1.375% European Medium Term Notes Two Thousand twenty nine [Member] Member gsk:OnePointThreeSevenFivePercentEuropeanMediumTermNotesTwoThousandTwentyNineMember
2027 1.750% European Medium Term Note 2030 [member] Member gsk:OnePointSevenFiveZeroPercentageEuropeanMediumTermNoteTwoThousandThirtyMember
2028 5.250% European Medium Term Note 2033 [Member] Member gsk:FivePointTwoFivePercentEuropeanMediumTermNoteTwoThousandThirtyThreeMember
2029 5.375% US Medium Term Note 2034 [Member] Member gsk:FivePointThreeSevenFivePercentUsMediumTermNoteTwoThousandThirtyFourMember
2030 6.375% US Medium Term Note 2038 [Member] Member gsk:SixPointThreeSevenFivePercentUsMediumTermNoteTwoThousandThirtyEightMember
2031 6.375% European Medium Term Note 2039 [Member] Member gsk:SixPointThreeSevenFivePercentEuropeanMediumTermNoteTwoThousandThirtyNineMember
2032 5.250% European Medium Term Note 2042 [Member] Member gsk:FivePointTwoFivePercentEuropeanTermNoteTwoThousandFortyTwoMember
2033 4.200% US$ US Medium Term Note 2043 [Member] Member gsk:FourPointTwoPercentUsMediumTermNoteTwoThousandFortyThreeMember
2034 4.250% European Medium Term Note 2045 [Member] Member gsk:FourPointTwoFivePercentEuropeanMediumTermNoteTwoThousandFortyFiveMember
2035 Long Term Borrowings [Member] Member ifrs-full:LongtermBorrowingsMember
2036 Other LongTerm Borrowings [member] Member gsk:OtherLongtermBorrowingsMember
2037 Disclosure of debt [line items] LineItems gsk:DisclosureOfDebtLineItems
2038 Current assets: Abstract ifrs-full:CurrentAssetsAbstract
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2040 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2041 Cash and cash equivalents reported in assets held for sale Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale
2042 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
2043 Short-term borrowings: Abstract ifrs-full:BorrowingsAbstract
2044 Commercial paper Concept (Monetary) As Of Credit ifrs-full:CommercialPapersIssued
2045 Bank loans and overdrafts Concept (Monetary) As Of Credit gsk:BankLoansAndOverdrafts
2046 Obligations under finance leases Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
2047 Drawn bank facility Concept (Monetary) As Of Credit gsk:DrawnBankFacility
2048 Short-term borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
2049 Long-term borrowings: Abstract gsk:LongTermBorrowingsAbstract
2050 Obligations under finance leases Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
2051 Long-term borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
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2053 1188 - Disclosure - Net Debt - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureNetDebtAdditionalInformation
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*

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2059 Matures in December 2019 [member] Member gsk:MaturesInDecemberTwoThousandNineteenMember
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2062 Commercial paper [member] Member gsk:CommercialPaper1Member
2063 Letter of credit 1 [member] Member gsk:LetterOfCredit1Member
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2086 Tesaro [member] Member gsk:TesaroMember
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2090 Effective Interest rate on cash and cash equivalents Concept (Percent) For Period gsk:EffectiveInterestRateOnCashAndCashEquivalents
2091 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
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2093 Commercial paper authorized Concept (Monetary) As Of Credit gsk:CommercialPaperAuthorized
2094 Commercial paper issued Concept (Monetary) As Of Credit ifrs-full:CommercialPapersIssued
2095 Credit Facility available amount Concept (Monetary) As Of Credit gsk:CreditFacilityAvailableAmount
2096 Number of transactions active Concept (Integer) For Period gsk:NumberOfTransactionsActive
2097 Drawn bank facility Concept (Monetary) As Of Credit gsk:DrawnBankFacility
2098 Undrawn bank facility Concept (Monetary) As Of Credit gsk:UndrawnBankFacility
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2100 Weighted average interest rate on current bank loans and overdrafts Concept (Percent) As Of gsk:WeightedAverageInterestRateOnCurrentBankLoansAndOverdrafts
2101 Weighted average interest rate on short-term loan Concept (Percent) As Of gsk:WeightedAverageInterestRateOnShorttermLoan
2102 Average effective pre-swap interest rate notes as short Concept (Percent) As Of gsk:AverageEffectivePreSwapInterestRateShortTerm
2103 Coupon note interest rate Concept (Percent) As Of gsk:CouponNoteInterestRate
2104 Long-term borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
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2106 Interest at effective rates Concept (Percent) For Period gsk:CarryInterestAtEffectiveRates
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2108 Pledged investments value Concept (Monetary) For Period Debit gsk:PledgedInvestments
2109 Other non current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
2110 1189 - Disclosure - Net Debt - Schedule of Finance Lease Obligations (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureNetDebtScheduleOfFinanceLeaseObligations
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*

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2116 Between 2 and 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
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2118 Between 4 and 5 years [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
2119 Later than 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
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2122 Future finance charges Concept (Monetary) As Of Credit ifrs-full:FutureFinanceChargeOnFinanceLease
2123 Total finance lease obligations Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
2124 1190 - Disclosure - Contingent Liabilities - Additional Information (Detail) Network

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2125 Implied Table Table

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2127 Contingent liabilities, comprising guarantees, discounted bills and other items Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2128 Financial assets were pledged as collateral for contingent liabilities Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
2129 1191 - Disclosure - Share Capital and Share Premium Account - Summary of Share Capital and Share Premium (Detail) Network

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2130 Disclosure Of Classes Share Capital And Share Premium [table] Table

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*

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2140 Shares Authorised Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
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2143 Ordinary shares acquired by ESOP Trusts Concept (Shares) As Of gsk:NumberOfTreasurySharesTransferredToEmployeeShareTrusts
2144 Share capital issued and fully paid ending balance Concept (Shares) As Of ifrs-full:NumberOfSharesIssuedAndFullyPaid
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2146 Issued under employee share schemes Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
2147 Ordinary shares acquired by ESOP Trusts Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
2148 Issued under employee share schemes Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
2149 Ordinary shares acquired by ESOP Trusts Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
2150 Equity at end of period Concept (Monetary) As Of Credit ifrs-full:Equity
2151 Issued under employee share schemes Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
2152 Ordinary shares acquired by ESOP Trusts Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
2153 1192 - Disclosure - Share Capital and Share Premium Account - Summary of Share Capital and Share Premium (Parenthetical) (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureShareCapitalAndSharePremiumAccountSummaryOfShareCapitalAndSharePremiumParenthetical
2154 Implied Table Table

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2157 1193 - Disclosure - Share Capital and Share Premium Account - Summary of Share Capital (Detail) Network

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2158 Implied Table Table

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2160 Number of shares issuable under employee share schemes Concept (Decimal) As Of gsk:SharesReservedForIssueUnderEmployeeShareSchemes
2161 Number of unissued shares not under option Concept (Shares) For Period gsk:NumberOfUnIssuedSharesNotUnderOption
2162 1194 - Disclosure - Share Capital and Share Premium Account - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureShareCapitalAndSharePremiumAccountAdditionalInformation
2163 Disclosure Of Classes Share Capital And Share Premium [table] Table

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*

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2164 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
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2166 Employee share ownership plan [member] Member gsk:EmployeeShareOwnershipPlanMember
2167 Treasury shares [member] Member ifrs-full:TreasurySharesMember
2168 Free issue [member] Member gsk:FreeIssueMember
2169 Disclosure Of Classes Of Share Capital And Share Premium [line items] LineItems gsk:DisclosureOfClassesOfShareCapitalAndSharePremiumLineItems
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2171 1195 - Disclosure - Movements in Equity - Additional Information (Detail) Network

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2172 Statement of changes in equity [table] Table

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*

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2181 Retained losses and other reserves Concept (Monetary) As Of Credit gsk:RetainedEarningsAndOtherReserves
2182 Other reserve Concept (Monetary) As Of Credit ifrs-full:OtherReserves
2183 1196 - Disclosure - Movements in Equity - Summary of Cumulative Translation Exchange in Equity (Detail) Network

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2184 Statement of changes in equity [table] Table

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2192 Exchange movements on overseas net assets Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
2193 Reclassification of exchange on liquidation or disposal of overseas subsidiaries Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
2194 Ending balance Concept (Monetary) As Of Credit ifrs-full:ReserveOfExchangeDifferencesOnTranslation
2195 1197 - Disclosure - Movements in Equity - Analysis of Other Comprehensive Income by Equity Category (Detail) Network

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2196 Statement of changes in equity [table] Table

*

*

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2200 Other reserves [member] Member ifrs-full:OtherReservesMember
2201 Non- controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
2202 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
2203 Items that may be subsequently reclassified to income statement: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
2204 Exchange movements on overseas net assets and net investment hedges Concept (Monetary) For Period Credit gsk:ExchangeMovementsOnOverseasNetAssetsAndNetInvestmentHedges
2205 Reclassification of exchange on liquidation or disposal of overseas subsidiaries Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
2206 Fair value movements on available-for-sale investments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
2207 Reclassification of fair value movements on available-for-sale investments Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax
2208 Deferred tax on fair value movements on available-for-sale investments Concept (Monetary) For Period Debit gsk:DeferredTaxOnFairValueMovementsOnAvailableForSaleInvestments
2209 Deferred tax reversed on reclassification of available-for-sale investments Concept (Monetary) For Period Debit gsk:DeferredTaxReversedOnReclassificationOfAvailableForSaleInvestments
2210 Reclassification of cash flow hedges to income statement Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax
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2212 Reclassification of cash flow hedges on income and expense Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax
2213 Deferred tax on fair value movements on cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
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2220 Tax on remeasurement gains (losses) in defined benefit plans Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
2221 Other comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
2222 1198 - Disclosure - Movements in Equity - Analysis of Other Reserves (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureMovementsInEquityAnalysisOfOtherReserves
2223 Statement of changes in equity [table] Table

*

*

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2226 ESOP trust shares [member] Member gsk:EsopTrustMember
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2228 Cash Flow Hedges Reserve [Member] Member ifrs-full:ReserveOfCashFlowHedgesMember
2229 Other reserves [member] Member ifrs-full:OtherReservesMember
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2231 Other reserves, beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherReserves
2232 Implementation of IFRS 9 Concept (Monetary) For Period Credit gsk:IncreaseDecreaseDueToTheAdoptionOfIFRS9
2233 At 31 December, as adjusted Concept (Monetary) As Of Credit gsk:OtherReservesEndingBalanceAsAdjusted
2234 Exchange adjustments Concept (Monetary) For Period Debit gsk:ExchangeAdjustments
2235 Transferred to income and expense in the year on disposals Concept (Monetary) For Period Debit gsk:TransferredIncomeExpenseOnDisposals
2236 Transferred to Retained earnings in the year on disposal of equity investments Concept (Monetary) For Period Credit gsk:TransferredToRetainedEarningsOnDisposalOfEquityInvestments
2237 Transferred to income and expense in the year on impairments Concept (Monetary) For Period Debit gsk:TransferredIncomeExpenseOnImpairments
2238 Net fair value movement in the year Concept (Monetary) For Period Debit gsk:NetFairValueMovements
2239 Ordinary shares acquired by ESOP Trusts Concept (Monetary) For Period Debit gsk:OrdinarySharesAcquiredByEsopTrustsIncludedInOtherReserves
2240 Write-down of shares held by ESOP Trusts Concept (Monetary) For Period Credit gsk:WritedownOfSharesHeldByEsopTrusts
2241 Other reserves, ending balance Concept (Monetary) As Of Credit ifrs-full:OtherReserves
2242 1199 - Disclosure - Related Party Transactions - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureRelatedPartyTransactionsAdditionalInformation
2243 Disclosure of transactions between related parties [table] Table

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*

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2247 Joint ventures where entity is venturer [member] Member ifrs-full:JointVenturesWhereEntityIsVenturerMember
2248 Medicxi Ventures I Limited Partner [member] Member gsk:MedicxiVenturesILimitedPartnerMember
2249 Index ventures life VI [member] Member gsk:IndexVenturesLifeVIMember
2250 Kurma Biofund II, FCPR [member] Member gsk:KurmaBiofundIifcprMember
2251 Apollo Therapeutics LLP [member] Member gsk:ApolloTherapeuticsLLPMember
2252 Longwood Founders Fund LP [member] Member gsk:LongwoodFoundersFundLPMember
2253 Qura Therapeutics LLC [member] Member gsk:QuraTherapeuticsLLCMember
2254 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
2255 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2256 Japan Vaccine Company Limited [member] Member gsk:JapanVaccineCompanyLimitedMember
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2259 Percentage of shares owned Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
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2264 Trading balance receivable Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
2265 Trading balance payable Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
2266 Loans outstanding Concept (Monetary) For Period Credit gsk:LoansReceivableMadeByEntityRelatedPartyTransactions
2267 Increase in equity investment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
2268 Decrease in liability Concept (Monetary) For Period Credit gsk:AdjustmentsForIncreaseDecreaseInLiabilities
2269 Liability Concept (Monetary) As Of Credit ifrs-full:Liabilities
2270 1200 - Disclosure - Adjustments Reconciling Profit After Tax to Operating Cash Flows - Summary of Cash Generated from Operations (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAdjustmentsReconcilingProfitAfterTaxToOperatingCashFlowsSummaryOfCashGeneratedFromOperations
2271 Implied Table Table

*

*

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2273 Profit after tax Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
2274 Tax on profits Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncomeTaxExpense
2275 Share of after tax profits of associates and joint ventures Concept (Monetary) For Period Debit gsk:AdjustmentsForShareOfAfterTaxProfitsOfAssociatesAndJointVentures
2276 Finance expense net of finance income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncomeCost
2277 Depreciation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationExpense
2278 Amortisation of intangible assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForAmortisationExpense
2279 Impairment and assets written off Concept (Monetary) For Period Debit gsk:AdjustmentsForImpairmentAndAssetsWrittenOff
2280 Profit on sale of businesses Concept (Monetary) For Period Credit gsk:AdjustmentsForProfitOnSaleOfBusinesses
2281 Profit on sale of intangible assets Concept (Monetary) For Period Debit gsk:AdjustmentsForProfitOnSaleOfIntangibleAssets
2282 Profit on sale of investments in associates Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
2283 Profit on sale of equity investments Concept (Monetary) For Period Credit gsk:AdjustmentsForProfitOnSaleOfEquityInvestments
2284 Gain on Consumer Healthcare Joint Venture put hedging Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesNetOfTax
2285 Business acquisition costs Concept (Monetary) For Period Debit gsk:AdjustmentsForAcquisitionCosts
2286 Changes in working capital: Abstract gsk:ChangesInWorkingCapitalAbstract
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2288 Increase in trade receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
2289 Increase in trade payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
2290 Decrease in other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables
2291 Contingent consideration paid (see Note •) Concept (Monetary) For Period Debit gsk:AdjustmentsForDecreaseIncreaseInContingentConsiderationPaid
2292 Other non-cash increase in contingent consideration liabilities Concept (Monetary) For Period Debit gsk:AdjustmentsForDecreaseIncreaseInOtherNonCashContingentConsiderationLiabilities
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2295 Share-based incentive plans Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
2296 Fair value adjustments Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFairValueGainsLosses
2297 Other Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsToReconcileProfitLoss
2298 Adjustments reconciling profit after tax to operating cash flows Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForReconcileProfitLoss
2299 Cash generated from operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
2300 1201 - Disclosure - Reconciliation of Net Cash Flow to Movement in Net Debt - Summary of Net Debt (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureReconciliationOfNetCashFlowToMovementInNetDebtSummaryOfNetDebt
2301 Implied Table Table

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*

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2308 (Increase in)/repayment of other short-term loans Concept (Monetary) For Period Debit gsk:ProceedsFromRepaymentsOfOtherCurrentBorrowings
2309 Net repayment of obligations under finance leases Concept (Monetary) For Period Credit ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
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2311 Other non-cash movements Concept (Monetary) For Period Debit gsk:OtherAdjustmentsForNoncashItemsToNetDebt
2312 Movement in net debt Concept (Monetary) For Period Debit gsk:ChangesInNetDebt
2313 Net debt at end of year Concept (Monetary) As Of Credit ifrs-full:Borrowings
2314 1202 - Disclosure - Reconciliation of Net Cash Flow to Movement in Net Debt - Summary of Analysis of Changes in Net Debt (Detail) Network

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*

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2315 Disclosure of reconciliation of liabilities arising from financing activities [table] Table

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*

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2324 Other financing items [member] Member gsk:OtherFinancingItemsMember
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2327 Commercial paper [member] Member gsk:CommercialPaper1Member
2328 European/US Medium Term Notes and Bank Facilities [member] Member gsk:EuropeanUsMediumTermNotesAndBankFacilitiesMember
2329 Other [member] Member gsk:OtherCurrentDebtMember
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2334 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
2335 Long Term Borrowings [Member] Member ifrs-full:LongtermBorrowingsMember
2336 Total Debt [member] Member gsk:TotalDebtMember
2337 Assets held to hedge liabilities arising from financing activities [member] Member ifrs-full:AssetsHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember
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2342 Other Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities
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2344 Reclassification Concept (Monetary) For Period Credit gsk:ReclassificationOfNetDebt
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2346 Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
2347 1203 - Disclosure - Acquisitions and Disposals - 2016 Acquisitions - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAcquisitionsAndDisposals2016AcquisitionsAdditionalInformation
2348 Disclosure of detailed information about business combination [table] Table

*

*

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2353 2016 acquisitions [member] Member gsk:TwoThousandSixteenAcquisitionMember
2354 HIV R&D preclinical and discovery stage portfolio [member] Member gsk:HIVRAndDPreclinicalAndDiscoveryStagePortfolioMember
2355 Galvani Bioelectronics Limited [member] Member gsk:GalvaniBioelectronicsLimitedMember
2356 GSK Consumer Healthcare Limited With Hindustan Unilever Limited [member] Member gsk:GskConsumerHealthcarelimitedwithhindustanunileverlimitedMember
2357 Tesaro, Inc.[member] Member gsk:TesaroIncMember
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2372 Major business combination [member] Member ifrs-full:MajorBusinessCombinationMember
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2374 Entity [Domain] Member dei:EntityDomain
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2390 Fair value assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
2391 Cash consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2392 Percentage acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
2393 Percentage of holding in joint venture Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
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2398 Cash consideration Concept (Monetary) For Period Debit gsk:PaymentOfCashConsideration
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2400 Intangible assets Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
2401 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
2402 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
2403 Proportion of non-controlling interest Concept (Percent) For Period gsk:ProportionOfNonControllingInterest
2404 Fair value of shareholdings Concept (Monetary) As Of Debit ifrs-full:FairValueOfAcquiredReceivables
2405 Non controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterestInAcquireeRecognisedAtAcquisitionDate
2406 1204 - Disclosure - Acquisitions and Disposals - Summary of Investment in Associates and Joint Ventures (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAcquisitionsAndDisposalsSummaryOfInvestmentInAssociatesAndJointVentures
2407 Disclosure of detailed information about business combination [table] Table

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*

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2412 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
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2415 2018 investments [member] Member gsk:TwoThousandEighteenInvestmentsMember
2416 Associates and joint ventures 2018 disposals [member] Member gsk:AssociatesAndJointVenturesTwoThousandEighteenDisposalsMember
2417 2017 disposals [member] Member gsk:TwoThousandSeventeenBusinessDisposalsMember
2418 2017 investments [member] Member gsk:TwoThousandSeventeenInvestmentsMember
2419 Associates and joint ventures 2017 disposals [member] Member gsk:AssociatesAndJointVenturesTwoThousandSeventeenDisposalsMember
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2421 Cash consideration Concept (Monetary) For Period Credit ifrs-full:PortionOfConsiderationPaidReceivedConsistingOfCashAndCashEquivalents
2422 Net deferred consideration received Concept (Monetary) For Period Debit gsk:DeferredConsiderationReceived
2423 Cash and cash equivalents divested Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
2424 Transaction costs paid Concept (Monetary) For Period Credit gsk:PaymentsMadeForTransactionCostsAndOther
2425 Cash inflow Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
2426 1205 - Disclosure - Acquisitions and Disposals - Summary of Profit on Disposal of Businesses (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAcquisitionsAndDisposalsSummaryOfProfitOnDisposalOfBusinesses
2427 Disclosure of detailed information about business combination [table] Table

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*

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2432 Consideration including currency forwards and purchase adjustments Concept (Monetary) For Period Debit gsk:NetCashConsiderationOnDisposals
2433 Net assets sold: Abstract ifrs-full:AssetsAbstract
2434 Goodwill Concept (Monetary) For Period Credit gsk:DisposalsGoodwill
2435 Intangible assets Concept (Monetary) For Period Credit gsk:DisposalsIntangibleAssets
2436 Property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
2437 Inventory Concept (Monetary) For Period Credit gsk:DisposalsInventory
2438 Cash and cash equivalents Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2439 Other net assets Concept (Monetary) For Period Credit gsk:DisposalsOtherNetAssets
2440 Net assets sold Concept (Monetary) As Of Debit gsk:DisposalGroupAssetsNet
2441 Transaction costs Concept (Monetary) For Period Credit gsk:TransactionCostsOnAcquisition
2442 Reclassification of exchange from other comprehensive income Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
2443 Profit on disposal Concept (Monetary) For Period Credit gsk:GainLossOnDisposalsOfBusiness
2444 1206 - Disclosure - Acquisitions and Disposals - Summary of Disposal of Associates (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureAcquisitionsAndDisposalsSummaryOfDisposalOfAssociates
2445 Disclosure of detailed information about business combination [table] Table

*

*

ifrs-full:DisclosureOfBusinessCombinationsTable
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2447 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2448 Investment associates and joint ventures [member] Member gsk:InvestmentAssociatesAndJointVenturesMember
2449 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
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2451 2017 disposals [member] Member gsk:TwoThousandSeventeenBusinessDisposalsMember
2452 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
2453 Cash consideration Concept (Monetary) For Period Credit ifrs-full:PortionOfConsiderationPaidReceivedConsistingOfCashAndCashEquivalents
2454 Net book value of shares Concept (Monetary) For Period Debit gsk:NetBookValueOfSharesFromInvestmentsInAssociatesAndJointVentures
2455 Reclassification of exchange from other comprehensive income Concept (Monetary) For Period Debit gsk:ReclassificationOfExchangeFromOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
2456 Transaction costs Concept (Monetary) For Period Debit gsk:TransactionFees
2457 Profit on disposal Concept (Monetary) For Period Credit ifrs-full:ProfitsLossesOnDisposalOfInvestmentsAndChangesInValueOfInvestments
2458 1207 - Disclosure - Acquisitions and Disposals - Summary of Cash Flows from Business Combinations (Detail) Network

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*

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2459 Disclosure of detailed information about business combination [table] Table

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*

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2465 Cash consideration (paid)/received after purchase adjustments Concept (Monetary) For Period Credit ifrs-full:ConsiderationPaidReceived
2466 Cash and cash equivalents acquired Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2467 Cash inflow Concept (Monetary) For Period Debit gsk:ProceedsFromSmallBusiness
2468 1208 - Disclosure - Contingent consideration liabilities - Summary of Fair Value Contingent Consideration (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureContingentConsiderationLiabilitiesSummaryOfFairValueContingentConsideration
2469 Disclosure of contingent liabilities in business combination [table] Table

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*

ifrs-full:DisclosureOfContingentLiabilitiesInBusinessCombinationTable
2470 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2471 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2472 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
2473 Novartis [member] Member gsk:NovartisMember
2474 Other [member] Member gsk:OtherBusinessMember
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2476 Beginning balance Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
2477 Additions through business combinations Concept (Monetary) For Period Credit ifrs-full:NewLiabilitiesContingentLiabilitiesRecognisedInBusinessCombination
2478 Remeasurement through income statement Concept (Monetary) For Period Credit gsk:RemeasurementThroughIncomeStatementIncreaseDecreaseInContingentLiabilitiesRecognisedInBusinessCombination
2479 Cash payments: operating cash flows Concept (Monetary) For Period Debit gsk:AdjustmentsForDecreaseIncreaseInContingentConsiderationPaid
2480 Cash payments: investing activities Concept (Monetary) For Period Credit gsk:ContingentConsiderationPaid
2481 Other movements Concept (Monetary) For Period Credit gsk:IncreaseDecreaseThroughOtherMovementsFinancialLiability
2482 Ending balance Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
2483 1209 - Disclosure - Contingent Consideration Liabilities - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureContingentConsiderationLiabilitiesAdditionalInformation
2484 Disclosure Of Fair Value Of Contingent Consideration [table] Table

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*

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2486 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2487 Novartis [member] Member gsk:NovartisMember
2488 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
2489 Range [axis] Axis ifrs-full:RangeAxis
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2492 Top of range [member] Member ifrs-full:TopOfRangeMember
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2494 Contingent consideration payable Concept (Monetary) As Of Credit gsk:ContingentConsiderationLiabilitiesCurrent
2495 Contingent consideration settled Concept (Monetary) For Period Debit ifrs-full:SettledLiabilitiesContingentLiabilitiesRecognisedInBusinessCombination
2496 Contingent consideration liability discount percentage Concept (Percent) As Of gsk:ContingentConsiderationPayableDiscountedPercentage
2497 1210 - Disclosure - Contingent consideration liabilities - Summary of Possible Changes in key Inputs to Valuation of Contingent Consideration Liabilities (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureContingentConsiderationLiabilitiesSummaryOfPossibleChangesInKeyInputsToValuationOfContingentConsiderationLiabilities
2498 Disclosure Of Valuation Techniques And Key Model Inputs Used To Measure Contingent Consideration [table] Table

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*

gsk:DisclosureOfValuationTechniquesAndKeyModelInputsUsedToMeasureContingentConsiderationTable
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2500 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2501 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
2502 Novartis vaccines [member] Member gsk:NovartisVaccinesMember
2503 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
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2505 10 cent appreciation of the US Dollar [member] Member gsk:CurrencyRiskTenCentAppreciationOfUSDollarMember
2506 10 cent depreciation of US Dollar [member] Member gsk:CurrencyRiskTenCentDepreciationOfUSDollarMember
2507 10 cent appreciation of the Euro [member] Member gsk:CurrencyRiskTenCentAppreciationOfEuroMember
2508 10 cent depreciation of Euro [member] Member gsk:CurrencyRiskTenCentDepreciationOfEuroMember
2509 Disclosure of valuation techniques and key model inputs used to measure contingent consideration [line items] LineItems gsk:DisclosureOfValuationTechniquesAndKeyModelInputsUsedToMeasureContingentConsiderationLineItems
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2511 10% decrease in sales forecasts Concept (Monetary) For Period Debit gsk:DecreaseInSalesForecastAmount
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2513 1% decrease in discount rate Concept (Monetary) For Period Debit gsk:DecreaseInDiscountRateAmount
2514 5% increase in probability of milestone success Concept (Monetary) For Period Credit gsk:IncreaseInProbabilityOfMilestoneSuccessAmount
2515 5% decrease in probability of milestone success Concept (Monetary) For Period Debit gsk:DecreaseInProbabilityOfMilestoneSuccessAmount
2516 10 cent appreciation of US Dollar Concept (Monetary) For Period Credit gsk:AppreciationOfUSDollar
2517 10 cent depreciation of US Dollar Concept (Monetary) For Period Debit gsk:DepreciationOfUSDollar
2518 10 cent appreciation of Euro Concept (Monetary) For Period Credit gsk:AppreciationOfEuro
2519 10 cent depreciation of Euro Concept (Monetary) For Period Debit gsk:DepreciationOfEuro
2520 1211 - Disclosure - Contingent consideration liabilities - Summary of Possible Changes in key Inputs to Valuation of Contingent Consideration Liabilities (Parenthetical) (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureContingentConsiderationLiabilitiesSummaryOfPossibleChangesInKeyInputsToValuationOfContingentConsiderationLiabilitiesParenthetical
2521 Disclosure Of Valuation Techniques And Key Model Inputs Used To Measure Contingent Consideration [table] Table

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*

gsk:DisclosureOfValuationTechniquesAndKeyModelInputsUsedToMeasureContingentConsiderationTable
2522 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2523 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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2525 Novartis vaccines [member] Member gsk:NovartisVaccinesMember
2526 Disclosure of valuation techniques and key model inputs used to measure contingent consideration [line items] LineItems gsk:DisclosureOfValuationTechniquesAndKeyModelInputsUsedToMeasureContingentConsiderationLineItems
2527 Increase in sales forecasts Concept (Percent) For Period gsk:IncreaseInSalesForecastPercentage
2528 Decrease in sales forecasts Concept (Percent) For Period gsk:DecreaseInSalesForecastPercentage
2529 increase in discount rate Concept (Percent) For Period gsk:IncreaseInDiscountRatePercentage
2530 Decrease in discount rate Concept (Percent) For Period gsk:DecreaseInDiscountRatePercentage
2531 Increase in probability of milestone success Concept (Percent) For Period gsk:IncreaseInProbabilityOfMilestoneSuccessPercentage
2532 Decrease in probability of milestone success Concept (Percent) For Period gsk:DecreaseInProbabilityOfMilestoneSuccessPercentage
2533 1212 - Disclosure - Non-controlling interests - Summarised Financial Information of ViiV Healthcare Group and GSK Consumer Healthcare Joint Venture (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureNoncontrollingInterestsSummarisedFinancialInformationOfViiVHealthcareGroupAndGSKConsumerHealthcareJointVenture
2534 Disclosure of Non-controlling Interests [table] Table

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gsk:DisclosureOfNoncontrollingInterestsTable
2535 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
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2538 Consumer health care joint venture [member] Member gsk:ConsumerHealthCareJointVentureMember
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2540 Total comprehensive income/(expense) for the year attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2541 Dividends paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
2542 Non-controlling interests in the Consolidated balance sheet Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
2543 Turnover Concept (Monetary) For Period Credit ifrs-full:Revenue
2544 Profit/(loss) after taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
2545 Other comprehensive (expense)/income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
2546 Total comprehensive (expense)/income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
2547 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
2548 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
2549 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
2550 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
2551 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
2552 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2553 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
2554 Net cash inflow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
2555 Net cash inflow/(outflow) from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
2556 Net cash outflow from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
2557 (Decrease)/increase in cash and bank overdrafts in the year Concept (Monetary) For Period Debit gsk:IncreaseDecreaseInCashAndBankOverdrafts
2558 1213 - Disclosure - Non-controlling interests - Additional Information (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureNoncontrollingInterestsAdditionalInformation
2559 Disclosure of Non-controlling Interests [table] Table

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*

gsk:DisclosureOfNoncontrollingInterestsTable
2560 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
2561 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2562 ViiV healthcare [member] Member gsk:ViiVHealthCareMember
2563 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
2564 Consumer health care joint venture [member] Member gsk:ConsumerHealthCareJointVentureMember
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2566 Profit after taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
2567 Remeasurement of contingent consideration payable for acquisition Concept (Monetary) For Period Credit gsk:RemeasurementsOfContingentConsiderationPayableForAcquisition
2568 Joint venture ownership percentage Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
2569 1214 - Disclosure - Non-controlling interests - Schedule of Amount Attributable to VIIV Healthcare Group Included in GSK's Consolidated Statement of Comprehensive Income, Consolidated Statement of Changes in Equity and Consolidated Balance Sheet (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureNoncontrollingInterestsScheduleOfAmountAttributableToVIIVHealthcareGroupIncludedInGSKsConsolidatedStatementOfComprehensiveIncomeConsolidatedStatementOfChangesInEquityAndConsolida_Xb
2570 Disclosure of Non-controlling Interests [table] Table

*

*

gsk:DisclosureOfNoncontrollingInterestsTable
2571 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
2572 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2573 Consumer health care joint venture [member] Member gsk:ConsumerHealthCareJointVentureMember
2574 Disclosure of noncontrolling interests [line items] LineItems gsk:DisclosureOfNoncontrollingInterestsLineItems
2575 Total comprehensive income/(expense) for the year attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2576 Dividends paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
2577 Non-controlling interests in the Consolidated balance sheet Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
2578 1215 - Disclosure - Commitments - Schedule of Contractual Obligations and Commitments (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureCommitmentsScheduleOfContractualObligationsAndCommitments
2579 Implied Table Table

*

*

implied:Table
2580 Disclosure Of Contractual Obligations And Commitments [abstract] Abstract gsk:DisclosureOfContractualObligationsAndCommitmentsAbstract
2581 Intangible assets Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfIntangibleAssets
2582 Property, plant and equipment Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
2583 Investments Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitmentsOfInvestments
2584 Purchase commitments Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitmentsOfPurchaseCommitments
2585 Pensions Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitmentsOfPensions
2586 Other commitments Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitmentsOfOtherCommitments
2587 Interest on loans Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitmentsOfInterestOnLoans
2588 Finance lease charges Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitmentsOfFinanceLeaseCharges
2589 Total contractual obligations and commitments Concept (Monetary) As Of Credit gsk:ContractualObligationsAndCommitments
2590 1216 - Disclosure - Commitments - Additional Information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureCommitmentsAdditionalInformation
2591 Implied Table Table

*

*

implied:Table
2592 Disclosure of Commitments [abstract] Abstract gsk:DisclosureOfCommitmentsAbstract
2593 Payment due, 2019 Concept (Monetary) For Period Credit gsk:ContributionsToEliminateThePensionDeficitPaymentsDueInOneYears
2594 Payment due, 2020 Concept (Monetary) For Period Credit gsk:ContributionsToEliminateThePensionDeficitPaymentsDueInTwoYears
2595 Payment due, 2021 Concept (Monetary) For Period Credit gsk:ContributionsToEliminateThePensionDeficitPaymentsDueInThreeYears
2596 Payment due, 2022 Concept (Monetary) For Period Credit gsk:ContributionsToEliminateThePensionDeficitPaymentsDueInFourYears
2597 Ongoing annual funding requirement Concept (Monetary) For Period Credit gsk:OngoingAnnualUKPensionFundingRequirement
2598 Commitments under non-cancellable operating leases Concept (Monetary) For Period Credit gsk:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLeaseRecognised
2599 1217 - Disclosure - Commitments - Summary of Commitments Under Non-Cancellable Operating Leases (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureCommitmentsSummaryOfCommitmentsUnderNonCancellableOperatingLeases
2600 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
2601 Maturity [axis] Axis ifrs-full:MaturityAxis
2602 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2603 Not later than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
2604 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
2605 Between 2 and 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
2606 Between 3 and 4 Years [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
2607 Between 4 and 5 years [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
2608 Later than 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
2609 Disclosure of operating lease by lessee [line items] LineItems gsk:DisclosureOfOperatingLeaseByLesseeLineItems
2610 Total commitments under non-cancellable operating leases Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
2611 1218 - Disclosure - Financial instruments and related disclosures - Additional Information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresAdditionalInformation
2612 Disclosure of detailed information about financial instruments [table] Table

*

*

ifrs-full:DisclosureOfFinancialInstrumentsTable
2613 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2614 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2615 ViiV healthcare [member] Member gsk:ViiVHealthCareMember
2616 Segments [axis] Axis ifrs-full:SegmentsAxis
2617 Segments [member] Member ifrs-full:SegmentsMember
2618 Pharmaceuticals and Vaccines [member] Member gsk:PharmaceuticalsAndVaccinesMember
2619 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
2620 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2621 US commercial paper program [member] Member gsk:UsCommercialPaperProgramMember
2622 Types of insurance contracts [axis] Axis ifrs-full:TypesOfInsuranceContractsAxis
2623 Types of insurance contracts [member] Member ifrs-full:InsuranceContractsMember
2624 Global insurance programme [member] Member gsk:GlobalInsuranceProgrammeMember
2625 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
2626 Counterparties [member] Member ifrs-full:CounterpartiesMember
2627 HDFC bank [member] Member gsk:HDFCBankMember
2628 State Bank of India [member] Member gsk:StateBankOfIndiaMember
2629 Range [axis] Axis ifrs-full:RangeAxis
2630 Ranges [member] Member ifrs-full:RangesMember
2631 Top of range [member] Member ifrs-full:TopOfRangeMember
2632 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
2633 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
2634 Floating interest rate [member] Member ifrs-full:FloatingInterestRateMember
2635 External credit grades [axis] Axis ifrs-full:ExternalCreditGradesAxis
2636 Entity's total for external credit grades [member] Member ifrs-full:EntitysTotalForExternalCreditGradesMember
2637 External credit grades [member] Member ifrs-full:ExternalCreditGradesMember
2638 BBB/Baa [member] Member gsk:BbbOrBaaMember
2639 BBB -/ Baa3 Rated [member] Member gsk:BBB-OrBaaThreeRatedMember
2640 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
2641 Risks [member] Member ifrs-full:TypesOfRisksMember
2642 Liquidity risk [member] Member ifrs-full:LiquidityRiskMember
2643 Credit risk [member] Member ifrs-full:CreditRiskMember
2644 1% (100 basis points) increase in sterling interest rates [member] Member gsk:InterestRateRiskOnePercentIncreaseInSterlingInterestRatesMember
2645 Maturity [axis] Axis ifrs-full:MaturityAxis
2646 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2647 Not later than three months [member] Member ifrs-full:NotLaterThanThreeMonthsMember
2648 Not later than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
2649 Later than one year and not later than five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
2650 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2651 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2652 Non USA [member] Member gsk:NonUsaMember
2653 US [member] Member country:US
2654 Nigeria [member] Member country:NG
2655 Austria [member] Member country:AT
2656 Argentina [member] Member country:AR
2657 Uruquay [member] Member country:UY
2658 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
2659 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
2660 Level 3 [member] Member ifrs-full:Level3OfFairValueHierarchyMember
2661 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
2662 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
2663 Shionogi ViiV healthcare joint venture [member] Member gsk:ShionogiViiVHealthcareJointVentureMember
2664 Novartis [member] Member gsk:NovartisMember
2665 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2666 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2667 Equity investments [member] Member ifrs-full:EquityInvestmentsMember
2668 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2669 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2670 Bonds In A Designated Hedging Relationship [member] Member gsk:BondsInDesignatedHedgingRelationshipMember
2671 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
2672 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2673 Novartis [member] Member gsk:NovartisMember
2674 Tesaro [member] Member gsk:TesaroMember
2675 Consumer health care joint venture [member] Member gsk:ConsumerHealthCareJointVentureMember
2676 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
2677 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
2678 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
2679 Total capital Concept (Monetary) As Of Credit gsk:EquityAndDebtNet
2680 Cash and cash equivalents and liquid investments Concept (Monetary) As Of Debit gsk:CashAndCashEquivalentsAndLiquidInvestments
2681 Cash and cash equivalents and liquid investments held centrally Concept (Monetary) As Of Debit gsk:CashAndCashEquivalentsAndLiquidInvestmentsHeld
2682 Drawn amount Concept (Monetary) As Of ifrs-full:NotionalAmount
2683 Short-term finance through issuance of commercial paper Concept (Monetary) As Of Credit ifrs-full:CommercialPapersIssued
2684 Committed facilities during the period Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
2685 Description of contractual committed facilities Concept (Text/String) For Period gsk:DescriptionOfContractualCommittedFacilities
2686 Description of maturity date of borrowings Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2687 Borrowings maturity extension period Concept (Text/String) For Period gsk:BorrowingsMaturityExtensionOptionPeriod
2688 Amount held at European medium term note programme Concept (Monetary) As Of Credit gsk:AmountHeldAtEuropeanMediumTermNoteProgramme
2689 Notes issued at European medium term note programme Concept (Monetary) As Of Credit gsk:NotesIssuedAtEuropeanMediumTermNoteProgramme
2690 Notes issued under us shelf registration Concept (Monetary) As Of Credit gsk:NotesIssuedUnderUsShelfRegistration
2691 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
2692 Concentration of credit risk Concept (Monetary) As Of ifrs-full:CreditExposure
2693 Amount of cash held at unrated counter parties Concept (Monetary) As Of Debit gsk:CashHeldAtUnratedCounterparties
2694 Cash in transit Concept (Monetary) As Of Debit gsk:CashHeldAtUnratedCounterpartiesCashInTransitElement
2695 Bank balances and deposits held with counter parties Concept (Monetary) As Of Debit gsk:BankBalancesAndDepositHeldWithCounterparties
2696 Balances or deposits with banks Concept (Monetary) As Of Debit ifrs-full:BalancesWithBanks
2697 Cash reserves Concept (Monetary) As Of Credit gsk:CashReserves
2698 Cash held by subsidiary Concept (Monetary) As Of Debit gsk:CashHeldWithSubsidiaryCompany
2699 Percentage of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2700 Maximum percentage of trade receivables balance held by major customer account Concept (Percent) For Period gsk:PercentageOfAccountsReceivableByMajorCustomer
2701 Number of major customers accounting for more than 5% of trade receivables Concept (Integer) For Period gsk:NumberOfMajorCustomers
2702 Percentage of sales to three largest wholesalers Concept (Percent) For Period gsk:ConcentrationsOfRiskRevenuePercentage
2703 Group trade receivables due from three largest US wholesalers Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
2704 Cash and cash equivalents reported in assets held for sale Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale
2705 Carrying value of shares held by trust under employee share ownership plan Concept (Monetary) As Of Debit gsk:CarryingValueOfSharesHeldByTrustUnderEmployeeShareOwnershipPlan
2706 Market value of shares held by trust under employee share ownership plan Concept (Monetary) As Of Debit gsk:FairValueOfSharesHeldByTrustUnderEmployeeShareOwnershipPlan
2707 Treasury shares at cost Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
2708 Net losses recognised in the income statement Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets
2709 Remeasurement through income statement Concept (Monetary) For Period Debit gsk:RemeasurementThroughIncomeStatement
2710 Net gains recognised in other comprehensive income Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets
2711 Net gains (losses) on financial investments held Concept (Monetary) For Period Credit gsk:GainsLossesTransfersOutOfLevelOfFairValueHierarchyAssets
2712 Net gains (losses) on equity investments held Concept (Monetary) For Period Credit gsk:GainsLossesOnAvailableForSaleInvestmentsInOtherComprehensiveIncomeStillHeld
2713 Contingent consideration liabilities Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
2714 Borrowings excluding obligations under finance leases Concept (Monetary) As Of Credit gsk:BorrowingsExcludingObligationsUnderFinanceLease
2715 Impact on income through interest rate movements Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInIncomeThroughInterestRateMovements
2716 Percentage of increase in interest rate Concept (Percent) For Period gsk:PercentageOfIncreaseInInterestRate
2717 Increase in anticipated ontractual cashflows for repayment of debt and debt interest Concept (Monetary) For Period Credit gsk:IncreaseInAnticipatedContractualCashFlowsForRepaymentOfDebtAndDebtInterest
2718 PercentageOfDivestmentStake Concept (Percent) For Period gsk:PercentageOfDivestmentStake
2719 1219 - Disclosure - Financial Instruments and Related Disclosures - Summary of External Credit Exposure (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresSummaryOfExternalCreditExposure
2720 Disclosure of external credit grades [table] Table

*

*

ifrs-full:DisclosureOfExternalCreditExposuresTable
2721 External credit grades [axis] Axis ifrs-full:ExternalCreditGradesAxis
2722 Entity's total for external credit grades [member] Member ifrs-full:EntitysTotalForExternalCreditGradesMember
2723 AAA/Aaa [member] Member gsk:AAAOrAaaMember
2724 AA/Aa [member] Member gsk:AaOrAaMember
2725 A/A [member] Member gsk:AorAMember
2726 BBB/Baa [member] Member gsk:BbbOrBaaMember
2727 BB+/Ba1 and Below/Unrated [member] Member gsk:BBPlusOrBaOneMember
2728 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
2729 Risks [member] Member ifrs-full:TypesOfRisksMember
2730 Credit risk [member] Member ifrs-full:CreditRiskMember
2731 Disclosure of external credit grades [line items] LineItems ifrs-full:DisclosureOfExternalCreditExposuresLineItems
2732 Bank balances and deposits Concept (Monetary) As Of Debit gsk:BankBalancesAndDepositHeldWithCounterparties
2733 US Treasury and Treasury repo only money market funds Concept (Monetary) As Of Debit gsk:UsTreasuryAndTreasuryRepoOnlyMoneyMarketFunds
2734 Liquidity funds Concept (Monetary) As Of Credit gsk:LiquidityFunds
2735 Government securities Concept (Monetary) As Of Debit gsk:GovernmentSecurities
2736 3rd party financial derivatives Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
2737 Total Concept (Monetary) As Of ifrs-full:RatedCreditExposures
2738 1220 - Disclosure - Financial Instruments and Related Disclosures - Summary of Financial Assets and Liabilities (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresSummaryOfFinancialAssetsAndLiabilities
2739 Disclosure of detailed information about financial instruments [table] Table

*

*

ifrs-full:DisclosureOfFinancialInstrumentsTable
2740 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2741 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2742 Bonds In A Designated Hedging Relationship [member] Member gsk:BondsInDesignatedHedgingRelationshipMember
2743 Other Bonds [member] Member gsk:OtherBondsMember
2744 Bank Loans and Overdrafts [member] Member gsk:BankLoansAndOverdraftsMember
2745 Commercial paper [member] Member gsk:CommercialPaper1Member
2746 Other Borrowing [member] Member gsk:OtherBorrowingMember
2747 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
2748 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
2749 Financial Liabilities at Amortised Cost, Category [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
2750 Contingent Consideration Liabilities [member] Member gsk:ContingentConsiderationLiabilitiesMember
2751 Trade and other payable [member] Member gsk:TradeAndOtherPayableMember
2752 Other provisions [member] Member ifrs-full:OtherProvisionsMember
2753 Other non current liabilities [member] Member gsk:OtherNonCurrentLiabilitiesMember
2754 Other assets classified as held for sale [member] Member gsk:OtherAssetsClassifiedAsHeldForSaleMember
2755 Derivatives Financial Liabilities Designated At Fair Value Through Profit Or Loss [member] Member gsk:DerivativesFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLossMember
2756 Derivatives financial liabilities classified as held for trading under IAS39 [member] Member gsk:DerivativesFinancialLiabilitiesClassifiedAsHeldForTradingUnderIAS39Member
2757 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2758 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2759 Other investments [member] Member gsk:OtherInvestmentsMember
2760 Trade and other receivable [member] Member gsk:TradeAndOtherReceivableMember
2761 Liquid Investments [member] Member gsk:LiquidInvestmentsMember
2762 Cash and cash equivalents [member] Member gsk:CashAndCashEquivalents1Member
2763 Other items in Assets held for sale [member] Member gsk:OtherItemsInAssetsHeldForSaleMember
2764 Derivatives designated and effective as hedging instruments [member] Member gsk:DerivativesDesignatedAndEffectiveAsHedgingInstrumentsMember
2765 Held for trading derivatives that are not in a designated and effective hedging relationship [member] Member gsk:HeldForTradingDerivativesThatAreNotInDesignatedAndEffectiveHedgingRelationshipMember
2766 Other Noncurrent Assets [member] Member gsk:OtherNoncurrentAssetsMember
2767 Government bonds [member] Member gsk:GovernmentBondsMember
2768 Trade and Other Receivables and Certain Other Non-current Assets in Scope of IAS 39 [member] Member gsk:TradeAndOtherReceivablesAndCertainOtherNoncurrentAssetsInScopeOfIAS39Member
2769 Derivatives Financial Assets Designated At Fair Value Through Profit Or Loss [member] Member gsk:DerivativesFinancialAssetsDesignatedAtFairValueThroughProfitOrLossMember
2770 Derivatives Financial Assets Classified As Held For Trading Under IAS39 [member] Member gsk:DerivativesFinancialAssetsClassifiedAsHeldForTradingUnderIAS39Member
2771 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
2772 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
2773 Financial Liabilities at Amortised Cost, Category [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
2774 Trade and other payable [member] Member gsk:TradeAndOtherPayableMember
2775 Other provisions [member] Member ifrs-full:OtherProvisionsMember
2776 Other non current liabilities [member] Member gsk:OtherNonCurrentLiabilitiesMember
2777 Other assets classified as held for sale [member] Member gsk:OtherAssetsClassifiedAsHeldForSaleMember
2778 Financial Liabilities at Fair Value Through Profit or Loss, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
2779 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
2780 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
2781 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
2782 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
2783 Financial Assets at Fair Value Through Profit or Loss, Mandatory Measured at Fair Value, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
2784 Financial liabilities at fair value through profit or loss, mandatorily measured at fair value, category [member] Member gsk:FinancialLiabilitiesAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
2785 Financial Assets Available-for-sale, Category [member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
2786 Loans and Receivables, Category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
2787 Financial Assets at Fair Value Through Profit or Loss, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
2788 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
2789 Borrowings excluding obligations under finance leases Concept (Monetary) As Of Credit gsk:BorrowingsExcludingObligationsUnderFinanceLeaseAtFairValue
2790 Total financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
2791 Obligations under finance leases Concept (Monetary) As Of Credit gsk:ObligationsUnderFinanceLeasesAtFairvalue
2792 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2793 Total borrowings Concept (Monetary) As Of Credit gsk:BorrowingsAtFairValue
2794 Trade and other payables, Other provisions and certain Other non-current liabilities in scope of IAS 39 Concept (Monetary) As Of Credit gsk:TradeAndOtherPayablesOtherProvisionsAndCertainOtherNoncurrentLiabilitiesInScopeOfIaS39AtFairValue
2795 Borrowings excluding obligations under finance leases: Concept (Monetary) As Of Credit gsk:BorrowingsExcludingObligationsUnderFinanceLease
2796 Obligations under finance leases Concept (Monetary) As Of Credit gsk:ObligationsUnderFinanceLeases
2797 Total borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
2798 Trade and other payables, Other provisions and certain Other non-current liabilities in scope of IAS 39 Concept (Monetary) As Of Credit gsk:TradeAndOtherPayablesOtherProvisionsAndCertainOtherNoncurrentLiabilitiesInScopeOfIas39
2799 Total financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
2800 Net financial assets and financial liabilities Concept (Monetary) As Of Debit gsk:NetFinancialAssetsLiabilities
2801 Total financial assets fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
2802 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2803 Total financial liabilities fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
2804 Net financial assets and financial liabilities Concept (Monetary) As Of Debit gsk:NetFinancialAssetsFinancialLiabilitiesAtFairValue
2805 1221 - Disclosure - Financial Instruments and Related Disclosures - Summary of Fair Value of Financial Instruments (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresSummaryOfFairValueOfFinancialInstruments
2806 Disclosure of financial assets [table] Table

*

*

ifrs-full:DisclosureOfFinancialAssetsTable
2807 Measurement [axis] Axis ifrs-full:MeasurementAxis
2808 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
2809 At Fair Value [Member] Member ifrs-full:AtFairValueMember
2810 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
2811 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
2812 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
2813 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
2814 Level 3 [member] Member ifrs-full:Level3OfFairValueHierarchyMember
2815 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
2816 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
2817 Financial Liabilities at Fair Value Through Profit or Loss, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
2818 Financial Liabilities at Fair Value Through Profit or Loss, Designated Upon Initial Recognition or Subsequently, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
2819 Financial Liabilities at Fair Value Through Profit or Loss That Meet Definition of Held for Trading, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossThatMeetDefinitionOfHeldForTradingCategoryMember
2820 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
2821 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
2822 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
2823 Financial Assets at Fair Value Through Profit or Loss, Mandatory Measured at Fair Value, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
2824 Financial Assets Available-for-sale, Category [member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
2825 Financial Assets at Fair Value Through Profit or Loss, Designated Upon Initial Recognition or Subsequently, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
2826 Financial Assets at Fair Value Through Profit or Loss, Classified as Held for Trading, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
2827 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
2828 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
2829 Contingent Consideration Liabilities [member] Member gsk:ContingentConsiderationLiabilitiesMember
2830 Derivatives designated and effective as hedging instruments [member] Member gsk:DerivativesDesignatedAndEffectiveAsHedgingInstrumentsMember
2831 Held for trading derivatives that are not in a designated and effective hedging relationship [member] Member gsk:HeldForTradingDerivativesThatAreNotInDesignatedAndEffectiveHedgingRelationshipMember
2832 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2833 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2834 Other investments [member] Member gsk:OtherInvestmentsMember
2835 Trade and other receivable [member] Member gsk:TradeAndOtherReceivableMember
2836 Other Noncurrent Assets [member] Member gsk:OtherNoncurrentAssetsMember
2837 Derivatives designated and effective as hedging instruments [member] Member gsk:DerivativesDesignatedAndEffectiveAsHedgingInstrumentsMember
2838 Held for trading derivatives that are not in a designated and effective hedging relationship [member] Member gsk:HeldForTradingDerivativesThatAreNotInDesignatedAndEffectiveHedgingRelationshipMember
2839 Cash and cash equivalents [member] Member gsk:CashAndCashEquivalents1Member
2840 Liquid Investments [member] Member gsk:LiquidInvestmentsMember
2841 Derivatives Financial Assets Designated At Fair Value Through Profit Or Loss [member] Member gsk:DerivativesFinancialAssetsDesignatedAtFairValueThroughProfitOrLossMember
2842 Derivatives assets held for trading [member] Member gsk:DerivativesAssetsHeldForTradingMember
2843 Disclosure Of Financial Assets And Liabilities [line items] LineItems gsk:DisclosureOfFinancialAssetsAndLiabilitiesLineItems
2844 Financial assets at fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
2845 Financial liabilities at fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
2846 1222 - Disclosure - Financial Instruments and Related Disclosures - Summary of Movement in Financial Instruments Measured Using Level 3 Valuation Method (Detail) Network

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2847 Disclosure Of Fair Value Measurements Of Assets And Liabilities [table] Table

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2848 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
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2850 Level 3 [member] Member ifrs-full:Level3OfFairValueHierarchyMember
2851 Disclosure of fair value measurements of assets and liabilities [line items] LineItems gsk:DisclosureOfFairValueMeasurementsOfAssetsAndLiabilitiesLineItems
2852 Beginning balance Concept (Monetary) As Of Debit gsk:FinancialAssetsAndLiabilities
2853 Net losses recognised in the income statement Concept (Monetary) For Period Credit gsk:GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssetsAndLiabilities
2854 Net gains recognised in other comprehensive income Concept (Monetary) For Period Credit gsk:GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasuremenTassetsAndLiabilities
2855 Contingent consideration for businesses divested/acquired during the year Concept (Monetary) For Period Credit gsk:ContingentConsiderationLiabilitiesForBusinessesAcquiredDuringPeriod
2856 Payment of contingent consideration liabilities Concept (Monetary) For Period Credit gsk:PaymentOfContingentConsiderationLiabilities
2857 Additions Concept (Monetary) For Period Credit gsk:AdditionsFairValueMeasurementAssetsAndLiabilities
2858 Disposals and settlements Concept (Monetary) For Period Credit gsk:DisposalsAndSettlementsFairValueMeasurementAssetsAndLiabilities
2859 Transfers from Level 3 Concept (Monetary) For Period Credit gsk:TransfersOutOfLevelThreeOfFairValueHierarchyAssetsAndLiabilities
2860 Exchange adjustments Concept (Monetary) For Period Credit gsk:ExchangeFairValueMeasurementAssetsAndLiabilities
2861 Ending balance Concept (Monetary) As Of Debit gsk:FinancialAssetsAndLiabilities
2862 1223 - Disclosure - Financial instruments and related disclosures - Summary of Financial Assets and Non Financial Assets (Detail) Network

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2863 Disclosure of financial assets and non financial assets [table] Table

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2865 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
2866 Financial Assets at Fair Value Through Profit or Loss, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
2867 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
2868 Amortised cost [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostMember
2869 Financial Instruments [member] Member gsk:FinancialInstrumentsMember
2870 Non Financial Instruments [member] Member gsk:NonFinancialInstrumentsMember
2871 Loans and Receivables, Category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
2872 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2873 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2874 Trade and Other Receivables and Certain Other Non-current Assets in Scope of IAS 39 [member] Member gsk:TradeAndOtherReceivablesAndCertainOtherNoncurrentAssetsInScopeOfIAS39Member
2875 Disclosure of financial assets and non financial assets [line items] LineItems gsk:DisclosureOfFinancialAssetsAndNonFinancialAssetsLineItems
2876 Trade and other receivables (Note 24) Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
2877 Other non-current assets (Note 22) Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
2878 Other items in Assets held for sale (Note 26) Concept (Monetary) As Of Debit gsk:OtherItemsInAssetsLiabilitiesHeldForSale
2879 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
2880 1224 - Disclosure - Financial instruments and related disclosures - Schedule Of Ageing Financial Assets (Detail) Network

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*

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2881 Disclosure of financial assets that are either past due or impaired [table] Table

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ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
2882 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
2883 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
2884 Financial Assets Past Due and No Provision for Bad and Doubtful Debt [member] Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
2885 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
2886 Past due status [member] Member ifrs-full:PastDueStatusMember
2887 1 - 30 days [member] Member ifrs-full:NotLaterThanOneMonthMember
2888 31 - 90 days [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
2889 91 - 180 days [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
2890 181 - 365 days [member] Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
2891 Later Than One Year [Member] Member ifrs-full:LaterThanOneYearMember
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2893 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
2894 1225 - Disclosure - Financial instruments and related disclosures - Reconciliation of financial instruments within Trade and other payables, Other provisions, Other non-current liabilities and Contingent consideration liabilities (Detail) Network

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2895 Disclosure of financial liabilities [table] Table

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ifrs-full:DisclosureOfFinancialLiabilitiesTable
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2897 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
2898 Financial Liabilities at Fair Value Through Profit or Loss, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
2899 Other Liabilities [member] Member gsk:OtherLiabilitiesMember
2900 Financial Instruments [member] Member gsk:FinancialInstrumentsMember
2901 Non Financial Instruments [member] Member gsk:NonFinancialInstrumentsMember
2902 Amortised cost [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostMember
2903 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
2904 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
2905 Trade and Other Payables, Other Provisions and Certain Other Non-Current Liabilities in Scope of IFRS9 (2017 - IAS39) [member] Member gsk:TradeAndOtherPayablesOtherProvisionsAndCertainOtherNoncurrentLiabilitiesInScopeOfIAS39Member
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2907 Trade and other payables (Note 27) Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
2908 Other provisions (Note 29) Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
2909 Other non-currentliabilities (Note 30) Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
2910 Contingent consideration liabilities (Note 39) Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedAsOfAcquisitionDate
2911 Other items in Assets held for sale (Note 26) Concept (Monetary) As Of Debit gsk:OtherItemsInAssetsLiabilitiesHeldForSale
2912 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
2913 1226 - Disclosure - Financial instruments and related disclosures - Fair Values of Derivatives Held (Detail) Network

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2914 Disclosure of detailed information about hedging instruments [table] Table

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2916 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
2917 Financial Liabilities at Fair Value Through Profit or Loss, Designated Upon Initial Recognition or Subsequently, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
2918 Financial Liabilities at Fair Value Through Profit or Loss That Meet Definition of Held for Trading, Category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossThatMeetDefinitionOfHeldForTradingCategoryMember
2919 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
2920 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
2921 Financial Assets at Fair Value Through Profit or Loss, Mandatory Measured at Fair Value, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
2922 Financial Assets at Fair Value Through Profit or Loss, Classified as Held for Trading, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
2923 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
2924 Hedges [member] Member ifrs-full:TypesOfHedgesMember
2925 Cash Flow Hedges [member] Member ifrs-full:CashFlowHedgesMember
2926 Net Investment Hedges [member] Member gsk:NetInvestmentHedgesMember
2927 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
2928 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
2929 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
2930 Foreign Exchange Contracts [member] Member gsk:ForeignExchangeContractsMember
2931 Embedded and Other Derivatives [member] Member gsk:EmbeddedAndOtherDerivativesMember
2932 Cross currency swap [member] Member gsk:CrossCurrencySwapMember
2933 Disclosure of detailed information about hedging instruments [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems
2934 Financial assets, Non current Concept (Monetary) As Of Debit gsk:HedgingInstrumentAssetsNoncurrent
2935 Financial assets, current Concept (Monetary) As Of Debit gsk:HedgingInstrumentAssetsCurrent
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2937 Financial liabilities non current Concept (Monetary) As Of Credit gsk:HedgingInstrumentLiabilitiesNoncurrent
2938 Financial Liabilities, current Concept (Monetary) As Of Credit gsk:HedgingInstrumentLiabilitiesCurrent
2939 Total derivative instruments Concept (Monetary) As Of Credit ifrs-full:HedgingInstrumentLiabilities
2940 1227 - Disclosure - Financial instruments and related disclosures - Fair Values of Derivatives Held (Parenthetical) (Detail) Network

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2941 Disclosure of detailed information about hedging instruments [table] Table

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ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsTable
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2943 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
2944 Financial Assets at Fair Value Through Profit or Loss, Mandatory Measured at Fair Value, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
2945 Financial Assets at Fair Value Through Profit or Loss, Classified as Held for Trading, Category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
2946 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
2947 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
2948 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
2949 Foreign Exchange Contracts [member] Member gsk:ForeignExchangeContractsMember
2950 Cross currency swap [member] Member gsk:CrossCurrencySwapMember
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2953 Cash Flow Hedges [member] Member ifrs-full:CashFlowHedgesMember
2954 Net Investment Hedges [member] Member gsk:NetInvestmentHedgesMember
2955 Disclosure of detailed information about hedging instruments [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems
2956 Principal amount Concept (Decimal) As Of ifrs-full:NominalAmountOfHedgingInstrument
2957 1228 - Disclosure - Financial Instruments and Related Disclosures - Summary of Detailed Information of Foreign Exchange Forward Contracts, Swaps Outstanding and Related Hedged Items (Detail) Network

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*

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2958 Disclosure of detailed information about hedged items [table] Table

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ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsTable
2959 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
2960 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
2961 Foreign Exchange Contracts [member] Member gsk:ForeignExchangeContractsMember
2962 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
2963 Hedges [member] Member ifrs-full:TypesOfHedgesMember
2964 Cash Flow Hedges [member] Member ifrs-full:CashFlowHedgesMember
2965 Net Investment Hedges [member] Member gsk:NetInvestmentHedgesMember
2966 Hedges of net investment in foreign operations [member] Member ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember
2967 Hedged items [axis] Axis ifrs-full:HedgedItemsAxis
2968 Hedged items [member] Member ifrs-full:HedgedItemsMember
2969 Buy Foreign Currency Less than 3 months [member] Member gsk:BuyForeignCurrencyLessThanThreeMonthsMember
2970 Buy Foreign Currency 3 to 6 months [member] Member gsk:BuyForeignCurrencyThreeToSixMonthsMember
2971 Buy Foreign Currency over 6 months [member] Member gsk:BuyForeignCurrencyOverSixMonthsMember
2972 Sell Foreign Currency Less than 3 months [member] Member gsk:SellForeignCurrencyLessThanThreeMonthsMember
2973 Sell Foreign Currency 3 to 6 months [member] Member gsk:SellForeignCurrencyThreeToSixMonthsMember
2974 Sell Foreign Currency over 6 months [member] Member gsk:SellForeignCurrencyOverSixMonthsMember
2975 Variability in cash flows from a highly probable forecast transaction [member] Member gsk:VariabilityInCashFlowsFromHighlyProbableForecastTransactionMember
2976 Variability in cash flows from foreign exchange exposure arising on Euro denominated coupon payments relating to debt issued [member] Member gsk:VariabilityInCashFlowsFromForeignExchangeExposureArisingOnEuroDenominatedCouponPaymentsRelatingToDebtIssuedMember
2977 Disclosure of detailed information about hedged items [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsLineItems
2978 Average exchange rate Concept (Decimal) For Period ifrs-full:AverageForeignExchangeRate
2979 Foreign currency Concept (Text/String) For Period gsk:DescriptionOfForeignCurrency
2980 Notional value Concept (Decimal) As Of ifrs-full:NominalAmountOfHedgingInstrument
2981 Fair value Concept (Monetary) As Of ifrs-full:FinancialInstrumentsDesignatedAsHedgingInstrumentsAtFairValue
2982 Change in value for calculating hedge ineffectiveness Concept (Monetary) For Period Credit ifrs-full:GainLossOnChangeInFairValueOfHedgedItemUsedAsBasisForRecognisingHedgeIneffectiveness
2983 Balance in cash flow hedge reserve/foreign currency translation reserve for continuing hedges Concept (Monetary) For Period Credit gsk:ReserveOfCashFlowHedgesOrExchangeDifferencesOnTranslationContinuingHedges
2984 1229 - Disclosure - Financial Instruments and Related Disclosures - Summary of Effectiveness of Hedging Relationships and Amounts Reclassified from Hedging Reserve to Profit or Loss (Detail) Network

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2985 Disclosure of detailed information about hedging instruments [table] Table

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2988 Cash Flow Hedges [member] Member ifrs-full:CashFlowHedgesMember
2989 Hedges of net investment in foreign operations [member] Member ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember
2990 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
2991 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
2992 Foreign Exchange Contracts [member] Member gsk:ForeignExchangeContractsMember
2993 Hedged items [axis] Axis ifrs-full:HedgedItemsAxis
2994 Hedged items [member] Member ifrs-full:HedgedItemsMember
2995 Variability in cash flows from a highly probable forecast transaction [member] Member gsk:VariabilityInCashFlowsFromHighlyProbableForecastTransactionMember
2996 Variability in cash flows from foreign exchange exposure arising on Euro denominated coupon payments relating to debt issued [member] Member gsk:VariabilityInCashFlowsFromForeignExchangeExposureArisingOnEuroDenominatedCouponPaymentsRelatingToDebtIssuedMember
2997 Variability in cash flows [member] Member gsk:VariabilityInCashFlowsMember
2998 Pre-hedging of long-term interest rates [member] Member gsk:PrehedgingOfLongtermInterestRatesMember
2999 Disclosure of detailed information about hedged items [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsLineItems
3000 Hedging gains/(losses) recognised in reserves Concept (Monetary) As Of Credit ifrs-full:ReserveOfGainsAndLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments
3001 Amount of hedge ineffectiveness recognised in profit or loss Concept (Monetary) For Period Credit ifrs-full:GainLossOnHedgeIneffectivenessRecognisedInProfitOrLoss
3002 Line item in profit or loss in which hedge ineffectiveness is included Concept (Text/String) For Period ifrs-full:DescriptionOfLineItemInStatementOfComprehensiveIncomeThatIncludesRecognisedHedgeIneffectiveness
3003 Amount reclassified to profit or loss as hedged future cash flows no longer expected to occur Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesForWhichHedgedFutureCashFlowsAreNoLongerExpectedToOccurNetOfTax
3004 Amount reclassified to profit or loss as hedged item affects profit or loss Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesForWhichHedgedItemAffectedProfitOrLossNetOfTax
3005 Amount reclassified to profit or loss line item in which reclassification adjustment is included Concept (Text/String) For Period ifrs-full:DescriptionOfLineItemInStatementOfComprehensiveIncomeThatIncludesReclassificationAdjustments
3006 1230 - Disclosure - Financial Instruments and Related Disclosures - Summary of Detailed Information of Interest Rate Swap Contracts Outstanding and Related Hedged Items (Detail) Network

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3007 Disclosure of detailed information about hedged items [table] Table

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ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsTable
3008 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
3009 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
3010 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
3011 Maturity [axis] Axis ifrs-full:MaturityAxis
3012 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
3013 Not later than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
3014 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
3015 Later than 2 years and not later than 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
3016 Later than 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
3017 Hedged items [axis] Axis ifrs-full:HedgedItemsAxis
3018 Hedged items [member] Member ifrs-full:HedgedItemsMember
3019 Variable rate borrowings [member] Member gsk:VariableRateBorrowingsMember
3020 Disclosure of detailed information about hedged items [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsLineItems
3021 Average contracted fixed rate % Concept (Percent) As Of gsk:AverageFixedInterestRateOfHedgingInstrument
3022 Notional principal value £m Concept (Decimal) As Of ifrs-full:NominalAmountOfHedgingInstrument
3023 Change in fair value for recognising hedge ineffectiveness £m Concept (Monetary) For Period Credit ifrs-full:GainLossOnChangeInFairValueOfHedgingInstrumentUsedAsBasisForRecognisingHedgeIneffectiveness
3024 Fair value assets/ (liabilities) £m Concept (Monetary) As Of Debit gsk:DerivativeFinancialAssetsLiabilities
3025 Change in value used for calculating hedge ineffectiveness Concept (Monetary) For Period Credit ifrs-full:GainLossOnChangeInFairValueOfHedgedItemUsedAsBasisForRecognisingHedgeIneffectiveness
3026 Balance in cash flow hedge reserve for continuing hedges Concept (Monetary) As Of Credit ifrs-full:ReserveOfCashFlowHedgesContinuingHedges
3027 1231 - Disclosure - Financial instruments and related disclosures - Schedule of Offsetting of Financial Assets and Liabilities (Detail) Network

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3028 Disclosure Of Offsetting Of Financial Assets And Financial Liabilities [table] Table

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3029 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
3030 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
3031 Trades and other payables [member] Member gsk:TradesAndOtherPayablesMember
3032 Derivative financial liabilities [member] Member gsk:DerivativeFinancialLiabilitiesMember
3033 Types of financial assets [axis] Axis ifrs-full:TypesOfFinancialAssetsAxis
3034 Financial assets, type [member] Member ifrs-full:FinancialAssetsTypeMember
3035 Trade and other receivable [member] Member gsk:TradeAndOtherReceivableMember
3036 Derivative financial assets [member] Member gsk:DerivativeFinancialAssetsMember
3037 Disclosure of offsetting of financial assets and financial liabilities [line items] LineItems gsk:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesLineItems
3038 Gross financial assets/(liabilities) Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
3039 Gross financial (Liabilities)/assets set off Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
3040 Gross financial assets/(liabilities) Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
3041 Net financial assets/(liabilities)per balance sheet Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
3042 Gross financial (Liabilities)/assets set off Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
3043 Related amounts not set off in the balance sheet Concept (Monetary) As Of Credit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
3044 Net financial assets/(liabilities)per balance sheet Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
3045 Net amount Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
3046 Related amounts not set off in the balance sheet Concept (Monetary) As Of Debit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
3047 Net amount Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
3048 1232 - Disclosure - Financial instruments and related disclosures - Schedule of Debt Interest Rate Repricing (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresScheduleOfDebtInterestRateRepricing
3049 Disclosure of debt interest rate repricing [table] Table

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gsk:DisclosureOfDebtInterestRateRepricingTable
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3051 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
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3054 Floating interest rate [member] Member ifrs-full:FloatingInterestRateMember
3055 Maturity [axis] Axis ifrs-full:MaturityAxis
3056 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
3057 Later Than One Year [Member] Member ifrs-full:LaterThanOneYearMember
3058 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
3059 Between 2 and 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
3060 Between 3 and 4 Years [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
3061 Between 4 and 5 years [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
3062 Between Five and Ten Years [Member] Member ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember
3063 Greater Than Ten Years [Member] Member ifrs-full:LaterThanTenYearsMember
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3065 Total debt Concept (Monetary) As Of Credit gsk:Debt
3066 Total interest bearing Concept (Monetary) As Of Credit gsk:InterestBearingDebt
3067 Non-interest bearing Concept (Monetary) As Of Credit gsk:NoninterestBearingDebt
3068 1233 - Disclosure - Financial instruments and related disclosures - Impact of Non-functional Currency Foreign Exchange Exposures (Detail) Network

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3069 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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3072 10 cent appreciation of the US Dollar [member] Member gsk:CurrencyRiskTenCentAppreciationOfUSDollarMember
3073 10 cent appreciation of the Euro [member] Member gsk:CurrencyRiskTenCentAppreciationOfEuroMember
3074 10 Yen appreciation of the Yen [Member] Member gsk:CurrencyRiskTenYenAppreciationOfYenMember
3075 10 cent depreciation of US Dollar [member] Member gsk:CurrencyRiskTenCentDepreciationOfUSDollarMember
3076 10 cent depreciation of Euro [member] Member gsk:CurrencyRiskTenCentDepreciationOfEuroMember
3077 Yen Exchange Rates [Member] Member gsk:CurrencyRiskTenCentDepreciationOfYenMember
3078 10 cent depreciation of Yen [member] Member gsk:CurrencyRiskTenYenDepreciationOfYenMember
3079 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
3080 Increase/(decrease) in income Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInIncomeThroughForeignCurrencyExchangeExposures
3081 (Increase)/decrease in net debt Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInNetDebtThroughForeignCurrencyExchangeExposures
3082 1234 - Disclosure - Financial instruments and related disclosures - Impact of Interest Rate Currency Movements (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresImpactOfInterestRateCurrencyMovements
3083 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
3084 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
3085 Risks [member] Member ifrs-full:TypesOfRisksMember
3086 1% (100 basis points) increase in sterling interest rates [member] Member gsk:InterestRateRiskOnePercentIncreaseInSterlingInterestRatesMember
3087 1% (100 Basis Points) Increase in US Dollar Interest Rates [Member] Member gsk:InterestRateRiskOnePercentIncreaseInUsDollarInterestRatesMember
3088 1% (100 Basis Points) Increase in Euro Interest Rates [Member] Member gsk:InterestRateRiskOnePercentIncreaseInEuroInterestRatesMember
3089 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
3090 Increase/(decrease) in income Concept (Monetary) For Period Credit gsk:IncreaseDecreaseInIncomeThroughInterestRateMovements
3091 1235 - Disclosure - Financial instruments and related disclosures - Summary of Maturity Analysis for Non-derivative Financial Liabilities (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresSummaryOfMaturityAnalysisForNonderivativeFinancialLiabilities
3092 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

*

*

ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
3093 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
3094 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
3095 Non Derivatives Financial Liabilities [member] Member gsk:NonDerivativesFinancialLiabilitiesMember
3096 Maturity [axis] Axis ifrs-full:MaturityAxis
3097 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
3098 Not later than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
3099 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
3100 Between 2 and 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
3101 Between 3 and 4 Years [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
3102 Between 4 and 5 years [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
3103 Between Five and Ten Years [Member] Member ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember
3104 Greater Than Ten Years [Member] Member ifrs-full:LaterThanTenYearsMember
3105 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
3106 Debt Concept (Monetary) As Of Credit ifrs-full:BankBorrowingsUndiscountedCashFlows
3107 Interest on debt Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBorrowings
3108 Obligations under finance leases Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
3109 Finance charge on obligations under finance leases Concept (Monetary) As Of Credit ifrs-full:FutureFinanceChargeOnFinanceLease
3110 Trade payables and other liabilities not in net debt Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
3111 Total Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
3112 1236 - Disclosure - Financial instruments and related disclosures - Summary Anticipated Contractual Cash Flows for Derivative Instruments, Excluding Embedded Derivatives and Equity Options, Using Undiscounted Cash Flows (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureFinancialInstrumentsAndRelatedDisclosuresSummaryAnticipatedContractualCashFlowsForDerivativeInstrumentsExcludingEmbeddedDerivativesAndEquityOptionsUsingUndiscountedCashFlows
3113 Disclosure of detailed information about financial instruments [table] Table

*

*

ifrs-full:DisclosureOfFinancialInstrumentsTable
3114 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3115 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3116 Derivative Instruments [Member] Member ifrs-full:DerivativesMember
3117 Maturity [axis] Axis ifrs-full:MaturityAxis
3118 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
3119 Not later than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
3120 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
3121 Between 2 and 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
3122 Debt Instrument 1 [axis] Axis gsk:DebtInstrument1Axis
3123 Debt Instrument [domain] Member gsk:DebtInstrumentDomain
3124 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
3125 Foreign Exchange Forward Contracts and Swaps [member] Member gsk:ForeignExchangeForwardContractsAndSwapsMember
3126 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
3127 Receivable, Foreign exchange forward contracts and swaps Concept (Monetary) As Of Debit gsk:ReceivablesOnDerivativeFinancialInstrumentsUndiscountedCashFlows
3128 Payables, Interest rate swaps Concept (Monetary) As Of Credit gsk:PayablesOnDerivativeFinancialInstrumentsUndiscountedCashFlows
3129 1237 - Disclosure - Employee Share Schemes - Additional Information (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEmployeeShareSchemesAdditionalInformation
3130 Disclosure Of Employee Share Schemes [table] Table

*

*

gsk:DisclosureOfEmployeeShareSchemesTable
3131 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
3132 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
3133 Savings-Related Share Option Schemes [member] Member gsk:SavingsRelatedShareOptionSchemesMember
3134 Share Value Plan [member] Member gsk:ShareValuePlanMember
3135 Performance Share Plan [member] Member gsk:PerformanceSharePlansMember
3136 Award type. Axis gsk:AwardType1Axis
3137 Equity Award [domain] Member gsk:EquityAwardDomain
3138 American Depositary Shares [member] Member gsk:AmericanDepositarySharesMember
3139 Disclosure of employee share schemes [line items] LineItems gsk:DisclosureOfEmployeeShareSchemesLineItems
3140 Share options granted at percentage below market price Concept (Percent) For Period gsk:AtPercentageBelowMarketPrice
3141 Cost of share-based incentive plans Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
3142 Expected future dividend yield percentage share granted Concept (Percent) For Period gsk:ExpectedFutureDividendYieldPercentageShareGranted
3143 Number of awards granted Concept (Decimal) For Period gsk:NumberOfShareAwardsGrantedInSharebasedPaymentArrangement
3144 Weighted average fair value of awards Concept (Share) For Period gsk:WeightedAverageFairValueAtMeasurementDateShareAwardsGrantedPerShare
3145 Number of outstanding awards Concept (Decimal) As Of gsk:NumberOfOutstandingAwards
3146 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
3147 Weighted average fair value of options granted Concept (Share) As Of gsk:WeightedAverageFairValueOfShareOptionGrantedInShareBasedPaymentArrangement
3148 Number share options were not exercisable Concept (Decimal) As Of gsk:NumberOfShareOptionsNotExercisableInShareBasedPaymentArrangement
3149 1238 - Disclosure - Employee Share Schemes - Schedule of Number of Shares and ADS Issuable (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEmployeeShareSchemesScheduleOfNumberOfSharesAndADSIssuable
3150 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
3151 Award type. Axis gsk:AwardType1Axis
3152 Equity Award [domain] Member gsk:EquityAwardDomain
3153 American Depositary Shares [member] Member gsk:AmericanDepositarySharesMember
3154 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
3155 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
3156 Share Value Plan [member] Member gsk:ShareValuePlanMember
3157 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
3158 Number of shares, Beginning balance Concept (Decimal) As Of gsk:NumberOfOutstandingShareAwards
3159 Number of shares, Awards granted Concept (Decimal) For Period gsk:NumberOfShareAwardsGrantedInSharebasedPaymentArrangement
3160 Number of shares, Awards exercised Concept (Decimal) For Period gsk:NumberOfShareAwardsExercisedInSharebasedPaymentArrangement
3161 Number of shares, Awards cancelled Concept (Decimal) For Period gsk:NumberOfShareAwardsForfeitedInSharebasedPaymentArrangement
3162 Number of shares, Ending balance Concept (Decimal) As Of gsk:NumberOfOutstandingShareAwards
3163 Weighted fair value, Awards granted Concept (Share) For Period gsk:WeightedAverageFairValueAtMeasurementDateShareAwardsGrantedPerShare
3164 1239 - Disclosure - Employee Share Schemes - Summary of Valuation Model Used to Valuing Saving - Related Option to Arrive at the Share Based Payment Charge (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEmployeeShareSchemesSummaryOfValuationModelUsedToValuingSavingRelatedOptionToArriveAtTheShareBasedPaymentCharge
3165 Disclosure Of Share Options And Savings Related Options [table] Table

*

*

gsk:DisclosureOfShareOptionsAndSavingsRelatedOptionsTable
3166 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
3167 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
3168 Share Options and Savings-Related Options [member] Member gsk:ShareOptionsAndSavingsRelatedOptionsMember
3169 Disclosure of share options and savings related options [line items] LineItems gsk:DisclosureOfShareOptionsAndSavingsRelatedOptionsLineItems
3170 Risk-free interest rate Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
3171 Dividend yield Concept (Percent) For Period gsk:DividendYieldShareOptionsGranted
3172 Volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
3173 Expected life Concept (xbrli:durationItemType) For Period gsk:ExpectedLifeOfShareOptionsGranted
3174 Savings-related options grant price (including 20% discount) Concept (Share) For Period gsk:SavingsRelatedOptionsGrantPrice
3175 1240 - Disclosure - Employee Share Schemes - Summary of Valuation Model Used to Valuing Saving - Related Option to Arrive at the Share Based Payment Charge (Parenthetical) (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEmployeeShareSchemesSummaryOfValuationModelUsedToValuingSavingRelatedOptionToArriveAtTheShareBasedPaymentChargeParenthetical
3176 Disclosure Of Share Options And Savings Related Options [table] Table

*

*

gsk:DisclosureOfShareOptionsAndSavingsRelatedOptionsTable
3177 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
3178 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
3179 Share Options and Savings-Related Options [member] Member gsk:ShareOptionsAndSavingsRelatedOptionsMember
3180 Disclosure of share options and savings related options [line items] LineItems gsk:DisclosureOfShareOptionsAndSavingsRelatedOptionsLineItems
3181 Savings-related options grant price discount Concept (Percent) For Period gsk:SavingsRelatedOptionsGrantPriceDiscount
3182 1241 - Disclosure - Employee Share Schemes - Summary of Option Outstanding (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEmployeeShareSchemesSummaryOfOptionOutstanding
3183 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
3184 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
3185 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
3186 Share Option Schemes [member] Member gsk:ShareOptionSchemesMember
3187 Share Option Schemes American Depositary Shares [member] Member gsk:ShareOptionSchemesAmericanDepositarySharesMember
3188 Savings-Related Share Option Schemes [member] Member gsk:SavingsRelatedShareOptionSchemesMember
3189 Range [axis] Axis ifrs-full:RangeAxis
3190 Ranges [member] Member ifrs-full:RangesMember
3191 Top of range [member] Member ifrs-full:TopOfRangeMember
3192 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
3193 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
3194 Number of Shares Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
3195 Share option schemes - shares Weighted exercise price Concept (Share) As Of gsk:WeightedAverageExercisePriceOfShareOptionOutstandingInShareBasedPaymentArrangement
3196 Range of exercise prices on options outstanding at year end Concept (Share) As Of gsk:WeightedAverageExercisePriceOfShareOptionExercisableInShareBasedPaymentArrangement
3197 Weighted average market price on exercise during year Concept (Share) As Of gsk:WeightedAverageExercisePriceOfShareOptionExercisedInShareBasedPaymentArrangement
3198 Weighted average remaining contractual life Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
3199 1242 - Disclosure - Employee Share Schemes - Summary of Shares Held for Share Award Schemes (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosureEmployeeShareSchemesSummaryOfSharesHeldForShareAwardSchemes
3200 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
3201 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
3202 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
3203 Employee share ownership plan [member] Member gsk:EmployeeShareOwnershipPlanMember
3204 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
3205 Shares held for share award schemes, Number of shares Concept (Decimal) As Of gsk:NumberOfSharesHeldForShareAwardSchemes
3206 Shares held for share award schemes, Nominal value Concept (Monetary) As Of Credit gsk:NominalValueOfSharesHeldForShareAwardSchemes
3207 Shares held for share award schemes, Carrying value Concept (Monetary) As Of Credit gsk:CarryingValueOfSharesHeldForShareAwardSchemes
3208 Shares held for share award schemes, Market value Concept (Monetary) As Of Credit gsk:MarketValueOfSharesHeldForShareAwardSchemes
3209 Shares held for share option schemes, Number of shares Concept (Decimal) As Of gsk:NumberOfSharesHeldForShareOptionSchemes
3210 Shares held for share option schemes, Nominal value Concept (Monetary) As Of Credit gsk:NominalValueOfSharesHeldForShareOptionSchemes
3211 Shares held for share option schemes, Carrying value Concept (Monetary) As Of Credit gsk:CarryingValueOfSharesHeldForShareOptionSchemes
3212 Shares held for share option schemes, Market value Concept (Monetary) As Of Credit gsk:MarketValueOfSharesHeldForShareOptionSchemes
3213 1243 - Disclosure - Principal Group companies - Schedule of the Subsidiaries and Their Counties of Incorporation and the Equity Share Capital of These Entities wholly owned by the Group (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosurePrincipalGroupCompaniesScheduleOfTheSubsidiariesAndTheirCountiesOfIncorporationAndTheEquityShareCapitalOfTheseEntitiesWhollyOwnedByTheGroup
3214 Disclosure of subsidiaries [table] Table

*

*

ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
3215 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
3216 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
3217 Glaxo Group Limited [member] Member gsk:GlaxoGroupLimitedMember
3218 Glaxo Operations UK Limited [member] Member gsk:GlaxoOperationsUkLimitedMember
3219 GlaxoSmithKline Capital PLC [member] Member gsk:GlaxoSmithKlineCapitalPLCMember
3220 GlaxoSmithKline Consumer Healthcare Holdings Limited [member] Member gsk:GlaxoSmithKlineConsumerHealthcareHoldingsLimitedMember
3221 GlaxoSmithKline Consumer Healthcare (UK) Trading Limited [member] Member gsk:GlaxoSmithKlineConsumerHealthCareTradingLimitedMember
3222 GlaxoSmithKline Consumer Trading Services Limited [member] Member gsk:GlaxoSmithKlineConsumerTradingServicesLimitedMember
3223 GlaxoSmithKline Export Limited [member] Member gsk:GlaxoSmithKlineExportLimitedMember
3224 GlaxoSmithKline Finance PLC [member] Member gsk:GlaxoSmithKlineFinancePLCMember
3225 GlaxoSmithKline Holdings Limited [member] Member gsk:GlaxoSmithKlineHoldingsLimitedMember
3226 GlaxoSmithKline Research and Development Limited [member] Member gsk:GlaxoSmithKlineResearchAndDevelopmentLimitedMember
3227 GlaxoSmithKline Services Unlimited [member] Member gsk:GlaxoSmithKlineServicesUnlimitedMember
3228 GlaxoSmithKline UK Limited [member] Member gsk:GlaxoSmithKlineUnitedKingdomLimitedMember
3229 Setfirst Limited [member] Member gsk:SetFirstLimitedMember
3230 SmithKline Beecham Limited [member] Member gsk:SmithKlineBeechamLimitedMember
3231 ViiV Health Care Limited [member] Member gsk:ViiVHealthCareLimitedMember
3232 ViiV Healthcare UK Limited [member] Member gsk:ViiVHealthCareUnitedKingdomLimitedMember
3233 Block Drug Company Inc. [member] Member gsk:BlockDrugCompanyIncMember
3234 Corixa Corporation [member] Member gsk:CorixaCorporationMember
3235 GlaxoSmithKline Capital Inc. [member] Member gsk:GlaxoSmithKlineCapitalIncMember
3236 GlaxoSmithKline Consumer Healthcare Holdings (US) LLC [member] Member gsk:GlaxosmithklineConsumerHealthcareHoldingsUSLLCMember
3237 GlaxoSmithKline Consumer Health Care L P [member] Member gsk:GlaxoSmithKlineConsumerHealthCareLPMember
3238 GlaxoSmithKline Holdings (Americas) Inc. [member] Member gsk:GlaxoSmithKlineHoldingsIncMember
3239 GlaxoSmithKline LLC [member] Member gsk:GlaxoSmithKlineLLCMember
3240 Human Genome Sciences, Inc. [member] Member gsk:HumanGenomeSciencesIncMember
3241 GSK Consumer Health, Inc [member] Member gsk:GskConsumerHealthIncMember
3242 S.R One, Limited [member] Member gsk:SROneLimitedMember
3243 Stiefel Laboratories, Inc. [member] Member gsk:StiefelLaboratoriesIncMember
3244 Vii V Health Care Company [member] Member gsk:ViiVHealthCareCompanyMember
3245 GlaxoSmithKline Argentina S.A. [member] Member gsk:GlaxoSmithKlineArgentinaSAMember
3246 GlaxoSmithKline Australia Pty Ltd [Member] Member gsk:GlaxoSmithKlineAustraliaPtyLtdMember
3247 GlaxoSmithKline Consumer Healthcare Australia Pty Ltd [member] Member gsk:GlaxoSmithKlineConsumerHealthCareAustraliaPtyLtdMember
3248 GlaxoSmithKline Brasil Limitada [Member] Member gsk:GlaxoSmithKlineBrasilLimitadaMember
3249 GlaxoSmithKline Consumer Healthcare Inc. [Member] Member gsk:GlaxoSmithKlineConsumerHealthCareIncMember
3250 GlaxoSmithKline Inc. [Member] Member gsk:GlaxoSmithKlineIncMember
3251 ID Biomedical Corporation of Quebec [Member] Member gsk:IDBiomedicalCorporationOfQuebecMember
3252 GlaxoSmithKline Limited [Member] Member gsk:GlaxoSmithKlineLimitedMember
3253 GlaxoSmithKline (Tianjin) Co. Ltd [member] Member gsk:GlaxoSmithKlineTianjinCoLtdMember
3254 Sino-American Tianjin Smith Kline and French Laboratories Ltd [Member] Member gsk:SinoAmericanTianjinSmithKlineAndFrenchLaboratoriesLtdMember
3255 GlaxoSmithKline Consumer Healthcare Limited [member] Member gsk:GlaxoSmithKlineConsumerHealthCareLimitedMember
3256 GlaxoSmithKline Pharmaceuticals Limited [member] Member gsk:GlaxoSmithKlinePharmaceuticalsLimitedMember
3257 GlaxoSmithKline Consumer Healthcare Japan K.K. [member] Member gsk:GlaxoSmithKlineConsumerHealthCareJapanKKMember
3258 GlaxoSmithKline K.K. [member] Member gsk:GlaxoSmithKlineKKMember
3259 ViiV Healthcare Kabushiki Kaisha [member] Member gsk:ViiVHealthCareKabushikiKaishaMember
3260 GlaxoSmithKline Pakistan Limited [member] Member gsk:GlaxoSmithKlinePakistanLimitedMember
3261 Glaxo Wellcome Manufacturing Pte Ltd. [member] Member gsk:GlaxoWellcomeManufacturingPteLtdMember
3262 GlaxoSmithKline Korea Limited [member] Member gsk:GlaxoSmithKlineKoreaLimitedMember
3263 GlaxoSmithKline llaclari Sanayi ve Ticaret A.S. [member] Member gsk:GlaxoSmithKlineLlaclariSanayiVeTicaretAsMember
3264 GlaxoSmithKline Biologicals SA [member] Member gsk:GlaxoSmithKlineBiologicalsSAMember
3265 GlaxoSmithKline Pharmaceuticals S.A. [member] Member gsk:GlaxoSmithKlinePharmaceuticalsSAMember
3266 GlaxoSmithKline Biologicals S.A.S. [member] Member gsk:GlaxoSmithKlineBiologicalsSASMember
3267 GlaxoSmithKline Sante Grand Public SAS [member] Member gsk:GlaxoSmithKlineSanteGrandPublicSASMember
3268 Laboratoire GlaxoSmithKline [member] Member gsk:LaboratoireGlaxoSmithKlineMember
3269 ViiV Healthcare SAS [member] Member gsk:ViiVHealthcareSASMember
3270 GlaxoSmithKline Consumer Healthcare GmbH and Co. KG [member] Member gsk:GlaxoSmithKlineConsumerHealthCareGmbHAndCoKGMember
3271 GlaxoSmithKline GmbH and Co. KG [member] Member gsk:GlaxoSmithKlineGmbHAndCoKGMember
3272 GSK Vaccines GmbH [member] Member gsk:GSKVaccinesGmbHMember
3273 GlaxoSmithKline Consumer Healthcare S.p.A. [member] Member gsk:GlaxoSmithKlineConsumerHealthCareSPAMember
3274 GlaxoSmithKline S.p.A. [member] Member gsk:GlaxoSmithKlineSPAMember
3275 GSK Vaccines S.r.l. [member] Member gsk:GSKVaccinesSRLMember
3276 GlaxoSmithKline B.V. [member] Member gsk:GlaxoSmithKlineBVMember
3277 GlaxoSmithKline Consumer Healthcare S p z o o [member] Member gsk:GlaxoSmithKlineConsumerHealthcareSPZOOMember
3278 GSK Services Sp z o.o. [member] Member gsk:GSKServicesSPZOOMember
3279 GlaxoSmithKline Trading Services Limited [member] Member gsk:GlaxoSmithKlineTradingServicesLimitedMember
3280 GlaxoSmithKline Healthcare AO [member] Member gsk:GlaxoSmithKlineHealthcareAoMember
3281 GlaxoSmithKline S.A. [member] Member gsk:GlaxoSmithKlineSAMember
3282 Laboratorios ViiV Healthcare, S.L. [member] Member gsk:LaboratoriosViiVHealthCareSLMember
3283 GSK Consumer Healthcare S.A [member] Member gsk:GSKConsumerHealthcareSAMember
3284 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
3285 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
3286 UK [member] Member ifrs-full:CountryOfDomicileMember
3287 US [member] Member country:US
3288 Argentina [member] Member country:AR
3289 Australia [member] Member country:AU
3290 Brazil [member] Member country:BR
3291 Canada [member] Member country:CA
3292 China [member] Member country:HK
3293 China [member] Member country:CN
3294 India [member] Member country:IN
3295 Japan [member] Member country:JP
3296 Pakistan [member] Member country:PK
3297 Singapore [member] Member country:SG
3298 Republic of Korea [member] Member country:KR
3299 Turkey [member] Member country:TR
3300 Belgium [member] Member country:BE
3301 France [member] Member country:FR
3302 Germany [member] Member country:DE
3303 Italy [member] Member country:IT
3304 Netherlands [member] Member country:NL
3305 Poland [member] Member country:PL
3306 Ireland [member] Member country:IE
3307 Russia [member] Member country:RU
3308 Spain [member] Member country:ES
3309 Switzerland [member] Member country:CH
3310 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
3311 Name of subsidiary Concept (Text/String) For Period ifrs-full:NameOfSubsidiary
3312 1244 - Disclosure - Principal Group companies - Schedule of the Subsidiaries and Their Counties of Incorporation and the Equity Share Capital of These Entities wholly owned by the Group (Parenthetical) (Detail) Network

*

*

http://www.gsk.com/taxonomy/role/DisclosurePrincipalGroupCompaniesScheduleOfTheSubsidiariesAndTheirCountiesOfIncorporationAndTheEquityShareCapitalOfTheseEntitiesWhollyOwnedByTheGroupParenthetical
3313 Disclosure of subsidiaries [table] Table

*

*

ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
3314 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
3315 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
3316 UK [member] Member ifrs-full:CountryOfDomicileMember
3317 US [member] Member country:US
3318 Argentina [member] Member country:AR
3319 Australia [member] Member country:AU
3320 Brazil [member] Member country:BR
3321 Canada [member] Member country:CA
3322 China [member] Member country:HK
3323 China [member] Member country:CN
3324 India [member] Member country:IN
3325 Japan [member] Member country:JP
3326 Pakistan [member] Member country:PK
3327 Singapore [member] Member country:SG
3328 Republic of Korea [member] Member country:KR
3329 Turkey [member] Member country:TR
3330 Belgium [member] Member country:BE
3331 France [member] Member country:FR
3332 Germany [member] Member country:DE
3333 Italy [member] Member country:IT
3334 Netherlands [member] Member country:NL
3335 Poland [member] Member country:PL
3336 Ireland [member] Member country:IE
3337 Russia [member] Member country:RU
3338 Spain [member] Member country:ES
3339 Switzerland [member] Member country:CH
3340 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
3341 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
3342 Glaxo Group Limited [member] Member gsk:GlaxoGroupLimitedMember
3343 Glaxo Operations UK Limited [member] Member gsk:GlaxoOperationsUkLimitedMember
3344 GlaxoSmithKline Capital PLC [member] Member gsk:GlaxoSmithKlineCapitalPLCMember
3345 GlaxoSmithKline Consumer Healthcare Holdings Limited [member] Member gsk:GlaxoSmithKlineConsumerHealthcareHoldingsLimitedMember
3346 GlaxoSmithKline Consumer Healthcare (UK) Trading Limited [member] Member gsk:GlaxoSmithKlineConsumerHealthCareTradingLimitedMember
3347 GlaxoSmithKline Consumer Trading Services Limited [member] Member gsk:GlaxoSmithKlineConsumerTradingServicesLimitedMember
3348 GlaxoSmithKline Export Limited [member] Member gsk:GlaxoSmithKlineExportLimitedMember
3349 GlaxoSmithKline Finance PLC [member] Member gsk:GlaxoSmithKlineFinancePLCMember
3350 GlaxoSmithKline Holdings Limited [member] Member gsk:GlaxoSmithKlineHoldingsLimitedMember
3351 GlaxoSmithKline Research and Development Limited [member] Member gsk:GlaxoSmithKlineResearchAndDevelopmentLimitedMember
3352 GlaxoSmithKline Services Unlimited [member] Member gsk:GlaxoSmithKlineServicesUnlimitedMember
3353 GlaxoSmithKline UK Limited [member] Member gsk:GlaxoSmithKlineUnitedKingdomLimitedMember
3354 Setfirst Limited [member] Member gsk:SetFirstLimitedMember
3355 SmithKline Beecham Limited [member] Member gsk:SmithKlineBeechamLimitedMember
3356 ViiV Health Care Limited [member] Member gsk:ViiVHealthCareLimitedMember
3357 ViiV Healthcare UK Limited [member] Member gsk:ViiVHealthCareUnitedKingdomLimitedMember
3358 Block Drug Company Inc. [member] Member gsk:BlockDrugCompanyIncMember
3359 Corixa Corporation [member] Member gsk:CorixaCorporationMember
3360 GlaxoSmithKline Capital Inc. [member] Member gsk:GlaxoSmithKlineCapitalIncMember
3361 GlaxoSmithKline Consumer Healthcare Holdings (US) LLC [member] Member gsk:GlaxosmithklineConsumerHealthcareHoldingsUSLLCMember
3362 GlaxoSmithKline Consumer Health Care L P [member] Member gsk:GlaxoSmithKlineConsumerHealthCareLPMember
3363 GlaxoSmithKline Holdings (Americas) Inc. [member] Member gsk:GlaxoSmithKlineHoldingsIncMember
3364 GlaxoSmithKline LLC [member] Member gsk:GlaxoSmithKlineLLCMember
3365 Human Genome Sciences, Inc. [member] Member gsk:HumanGenomeSciencesIncMember
3366 GSK Consumer Health, Inc [member] Member gsk:GskConsumerHealthIncMember
3367 S.R One, Limited [member] Member gsk:SROneLimitedMember
3368 Stiefel Laboratories, Inc. [member] Member gsk:StiefelLaboratoriesIncMember
3369 Vii V Health Care Company [member] Member gsk:ViiVHealthCareCompanyMember
3370 GlaxoSmithKline Argentina S.A. [member] Member gsk:GlaxoSmithKlineArgentinaSAMember
3371 GlaxoSmithKline Australia Pty Ltd [Member] Member gsk:GlaxoSmithKlineAustraliaPtyLtdMember
3372 GlaxoSmithKline Consumer Healthcare Australia Pty Ltd [member] Member gsk:GlaxoSmithKlineConsumerHealthCareAustraliaPtyLtdMember
3373 GlaxoSmithKline Brasil Limitada [Member] Member gsk:GlaxoSmithKlineBrasilLimitadaMember
3374 GlaxoSmithKline Consumer Healthcare Inc. [Member] Member gsk:GlaxoSmithKlineConsumerHealthCareIncMember
3375 GlaxoSmithKline Inc. [Member] Member gsk:GlaxoSmithKlineIncMember
3376 ID Biomedical Corporation of Quebec [Member] Member gsk:IDBiomedicalCorporationOfQuebecMember
3377 GlaxoSmithKline Limited [Member] Member gsk:GlaxoSmithKlineLimitedMember
3378 GlaxoSmithKline (Tianjin) Co. Ltd [member] Member gsk:GlaxoSmithKlineTianjinCoLtdMember
3379 Sino-American Tianjin Smith Kline and French Laboratories Ltd [Member] Member gsk:SinoAmericanTianjinSmithKlineAndFrenchLaboratoriesLtdMember
3380 GlaxoSmithKline Consumer Healthcare Limited [member] Member gsk:GlaxoSmithKlineConsumerHealthCareLimitedMember
3381 GlaxoSmithKline Pharmaceuticals Limited [member] Member gsk:GlaxoSmithKlinePharmaceuticalsLimitedMember
3382 GlaxoSmithKline Consumer Healthcare Japan K.K. [member] Member gsk:GlaxoSmithKlineConsumerHealthCareJapanKKMember
3383 GlaxoSmithKline K.K. [member] Member gsk:GlaxoSmithKlineKKMember
3384 ViiV Healthcare Kabushiki Kaisha [member] Member gsk:ViiVHealthCareKabushikiKaishaMember
3385 GlaxoSmithKline Pakistan Limited [member] Member gsk:GlaxoSmithKlinePakistanLimitedMember
3386 Glaxo Wellcome Manufacturing Pte Ltd. [member] Member gsk:GlaxoWellcomeManufacturingPteLtdMember
3387 GlaxoSmithKline Korea Limited [member] Member gsk:GlaxoSmithKlineKoreaLimitedMember
3388 GlaxoSmithKline llaclari Sanayi ve Ticaret A.S. [member] Member gsk:GlaxoSmithKlineLlaclariSanayiVeTicaretAsMember
3389 GlaxoSmithKline Biologicals SA [member] Member gsk:GlaxoSmithKlineBiologicalsSAMember
3390 GlaxoSmithKline Pharmaceuticals S.A. [member] Member gsk:GlaxoSmithKlinePharmaceuticalsSAMember
3391 GlaxoSmithKline Biologicals S.A.S. [member] Member gsk:GlaxoSmithKlineBiologicalsSASMember
3392 GlaxoSmithKline Sante Grand Public SAS [member] Member gsk:GlaxoSmithKlineSanteGrandPublicSASMember
3393 Laboratoire GlaxoSmithKline [member] Member gsk:LaboratoireGlaxoSmithKlineMember
3394 ViiV Healthcare SAS [member] Member gsk:ViiVHealthcareSASMember
3395 GlaxoSmithKline Consumer Healthcare GmbH and Co. KG [member] Member gsk:GlaxoSmithKlineConsumerHealthCareGmbHAndCoKGMember
3396 GlaxoSmithKline GmbH and Co. KG [member] Member gsk:GlaxoSmithKlineGmbHAndCoKGMember
3397 GSK Vaccines GmbH [member] Member gsk:GSKVaccinesGmbHMember
3398 GlaxoSmithKline Consumer Healthcare S.p.A. [member] Member gsk:GlaxoSmithKlineConsumerHealthCareSPAMember
3399 GlaxoSmithKline S.p.A. [member] Member gsk:GlaxoSmithKlineSPAMember
3400 GSK Vaccines S.r.l. [member] Member gsk:GSKVaccinesSRLMember
3401 GlaxoSmithKline B.V. [member] Member gsk:GlaxoSmithKlineBVMember
3402 GlaxoSmithKline Consumer Healthcare S p z o o [member] Member gsk:GlaxoSmithKlineConsumerHealthcareSPZOOMember
3403 GSK Services Sp z o.o. [member] Member gsk:GSKServicesSPZOOMember
3404 GlaxoSmithKline Trading Services Limited [member] Member gsk:GlaxoSmithKlineTradingServicesLimitedMember
3405 GlaxoSmithKline Healthcare AO [member] Member gsk:GlaxoSmithKlineHealthcareAoMember
3406 GlaxoSmithKline S.A. [member] Member gsk:GlaxoSmithKlineSAMember
3407 Laboratorios ViiV Healthcare, S.L. [member] Member gsk:LaboratoriosViiVHealthCareSLMember
3408 GSK Consumer Healthcare S.A [member] Member gsk:GSKConsumerHealthcareSAMember
3409 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
3410 Country of incorporation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
3411 Proportion of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
3412 1245 - Disclosure - Legal Proceedings - Additional Information (Detail) Network

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http://www.gsk.com/taxonomy/role/DisclosureLegalProceedingsAdditionalInformation
3413 Disclosure Of Legal Proceedings [table] Table

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gsk:DisclosureOfLegalProceedingsTable
3414 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
3415 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
3416 Dolin case [member] Member gsk:DolinCaseMember
3417 UK Competition and Markets Authority [member] Member gsk:UKCompetitionAndMarketsAuthorityMember
3418 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
3419 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
3420 US [member] Member country:US
3421 Disclosure of Legal Proceedings [line items] LineItems gsk:DisclosureOfLegalProceedingsLineItems
3422 Provisions for legal and other disputes Concept (Monetary) As Of Credit ifrs-full:LegalProceedingsProvision
3423 Legal and other disputes receivable Concept (Monetary) As Of Debit gsk:LegalProceedingsRecoverableProvision
3424 Net exposure on legal proceedings Concept (Monetary) As Of Credit gsk:NetExposureOnLegalProceedings
3425 Amount of compensation awarded to plaintiff Concept (Monetary) For Period Debit gsk:AmountOfCompensationAwardedToPlaintiff
3426 Civil penalty Concept (Monetary) For Period Debit gsk:LitigationClaimsForCivilPenalty
3427 Fine paid by group Concept (Monetary) As Of Debit gsk:FinesAndPenaltiesPayableByGroup
3428 Fine paid by other companies Concept (Monetary) As Of Debit gsk:FinesAndPenaltiesPayableByOther
3429 1246 - Disclosure - Post Balance Sheet Events - Additional Information (Detail) Network

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*

http://www.gsk.com/taxonomy/role/DisclosurePostBalanceSheetEventsAdditionalInformation
3430 Disclosure of non-adjusting events after reporting period [table] Table

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*

ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
3431 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
3432 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
3433 Major business combination [member] Member ifrs-full:MajorBusinessCombinationMember
3434 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
3435 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
3436 Tesaro, Inc.[member] Member gsk:TesaroIncMember
3437 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
3438 Cash consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred

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