ROYAL DUTCH SHELL PLC (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 100000 - Document - Document and Entity Information Network

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 http://www.shell.com/20181231/taxonomy/role/DocumentDocumentAndEntityInformation
2 Entities [Table] Table

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 dei:EntitiesTable
3 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
4 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
5 A Ordinary Shares [Member] Member rdsa:AOrdinarySharesMember
6 B Ordinary Shares [Member] Member rdsa:BOrdinarySharesMember
7 Document Information [Line Items] LineItems dei:DocumentInformationLineItems
8 Document Type Concept (Submission Type) For Period dei:DocumentType
9 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
10 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
11 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
12 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
13 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
14 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
15 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
16 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
17 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
18 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
19 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
20 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
21 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
22 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
23 100010 - Statement - Consolidated Statement of Income Network

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 http://www.shell.com/20181231/taxonomy/role/StatementConsolidatedStatementOfIncome
24 Implied Table Table

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25 Income Statement [Abstract] Abstract ifrs-full:IncomeStatementAbstract
26 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
27 Share of profit of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
28 Dividend Income Concept (Monetary) For Period Credit rdsa:DividendsIncome
29 Interest and other income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
30 Total revenue and other income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
31 Purchases Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
32 Production and manufacturing expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
33 Selling, distribution and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
34 Research and development Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
35 Exploration Concept (Monetary) For Period Debit ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
36 Depreciation, depletion and amortisation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
37 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
38 Total expenditure Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
39 Income before taxation Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTax
40 Taxation charge Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
41 Income for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
42 Income attributable to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
43 Income attributable to Royal Dutch Shell plc shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
44 Basic earnings per share ($) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
45 Diluted earnings per share ($) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
46 100020 - Statement - Consolidated Statement of Comprehensive Income Network

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 http://www.shell.com/20181231/taxonomy/role/StatementConsolidatedStatementOfComprehensiveIncome
47 Implied Table Table

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48 Statement Of Comprehensive Income [Abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
49 Income for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
50 Other comprehensive income/(loss), net of tax Abstract ifrs-full:OtherComprehensiveIncomeAbstract
51 Items that may be reclassified to income in later periods: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
52 Currency translation differences Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
53 Unrealised gains/(losses) on securities Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForAssetsHeldAtEndOfPeriodFairValueMeasurement
54 Debt instruments remeasurements Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
55 Cash flow hedging gains/(losses) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
56 Net investment hedging losses Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax
57 Deferred cost of hedging Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForAmountsTransferredToInitialCarryingAmountOfHedgedItems
58 Share of other comprehensive (loss)/income of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
59 Total Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
60 Items that are not reclassified to income in later periods: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
61 Retirement benefits remeasurements Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
62 Equity instruments remeasurements Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments
63 Share of other comprehensive income of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax
64 Total Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
65 Other comprehensive income/(loss) for the period Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
66 Comprehensive income/(loss) for the period Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
67 Comprehensive income attributable to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
68 Comprehensive income/(loss) attributable to Royal Dutch Shell plc shareholders Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
69 100030 - Statement - Consolidated Balance Sheet Network

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70 Implied Table Table

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71 Statement Of Financial Position [Abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
72 Assets Abstract ifrs-full:AssetsAbstract
73 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
74 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
75 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
76 Joint ventures and associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
77 Investments in securities Concept (Monetary) As Of Debit rdsa:InvestmentsInSecurities
78 Deferred tax Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
79 Retirement benefits Concept (Monetary) As Of Debit ifrs-full:NoncurrentRecognisedAssetsDefinedBenefitPlan
80 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
81 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
82 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
83 Current assets Abstract ifrs-full:CurrentAssetsAbstract
84 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
85 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
86 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:CurrentDerivativeFinancialAssets
87 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
88 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
89 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
90 Liabilities Abstract ifrs-full:LiabilitiesAbstract
91 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
92 Debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
93 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:NoncurrentPayables
94 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:NoncurrentDerivativeFinancialLiabilities
95 Deferred tax Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
96 Retirement benefits Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
97 Decommissioning and other provisions Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
98 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
99 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
100 Debt Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
101 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
102 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
103 Taxes payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
104 Retirement benefits Concept (Monetary) As Of Credit ifrs-full:CurrentRecognisedLiabilitiesDefinedBenefitPlan
105 Decommissioning and other provisions Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
106 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
107 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
108 Equity Abstract ifrs-full:EquityAbstract
109 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
110 Shares held in trust Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
111 Other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
112 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
113 Equity attributable to Royal Dutch Shell plc shareholders Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
114 Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
115 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
116 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
117 100040 - Statement - Consolidated Statement of Changes in Equity Network

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 http://www.shell.com/20181231/taxonomy/role/StatementConsolidatedStatementOfChangesInEquity
118 Statement Of Changes In Equity [Table] Table

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 ifrs-full:StatementOfChangesInEquityTable
119 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
120 Equity [member] Member ifrs-full:EquityMember
121 Share Capital [Member] Member ifrs-full:IssuedCapitalMember
122 Shares Held in Trust [Member] Member rdsa:SharesheldintrustMember
123 Other Reserves [Member] Member ifrs-full:OtherReservesMember
124 Retained Earnings [Member] Member ifrs-full:RetainedEarningsMember
125 Total [Member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
126 Non-controlling Interest [Member] Member ifrs-full:NoncontrollingInterestsMember
127 Statement Of Changes In Equity [Line Items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
128 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
129 Impact of IFRS 9 Concept (Monetary) As Of Debit ifrs-full:IncreaseDecreaseInFinancialAssetsArisingFromChangeInMeasurementAttributeFirstApplicationOfIFRS9
130 At January 1, 2018 (as revised) Concept (Monetary) As Of Credit rdsa:EquityAsRevised
131 Comprehensive income/(loss) for the period Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
132 Transfer from other comprehensive income Concept (Monetary) For Period Credit rdsa:AmountsTransferredFromOtherComprehensiveIncomeToProfit
133 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
134 Scrip dividends Concept (Monetary) For Period Debit rdsa:ScripDividends
135 Shares issued Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
136 Repurchases of shares Concept (Monetary) For Period Debit ifrs-full:PurchaseOfTreasuryShares
137 Share-based compensation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
138 Other changes in non-controlling interest Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
139 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
140 100050 - Statement - Consolidated Statement of Changes in Equity (Parenthetical) Network

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141 Statement [Table] Table

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142 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
143 Equity [member] Member ifrs-full:EquityMember
144 Other Reserves [Member] Member ifrs-full:OtherReservesMember
145 Retained Earnings [Member] Member ifrs-full:RetainedEarningsMember
146 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
147 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
148 Malaysia LNG Tiga Sdn Bhd [Member] Member rdsa:MalaysiaLngTigaMember
149 Canadian Natural Resources Limited [Member] Member rdsa:CanadianNaturalMember
150 Statement [Line Items] LineItems us-gaap:StatementLineItems
151 Transfer from other comprehensive income Concept (Monetary) For Period Credit rdsa:AmountsTransferredFromOtherComprehensiveIncomeToProfit
152 Impact of adoption of IFRS 2 Concept (Monetary) For Period Credit rdsa:CumulativeEffectOfChangeInAccountingPoliciesInPeriodOfAdoption
153 Reclassification between other reserves and retained earnings related to unwinding of expired share options Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings
154 100060 - Statement - Consolidated Statement of Cash Flows Network

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155 Implied Table Table

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156 Statement Of Cash Flows [Abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
157 Income for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
158 Adjustment for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
159 Current tax Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncomeTaxExpense
160 Interest expense (net) Concept (Monetary) For Period Debit rdsa:InterestExpenseNet
161 Interest and other income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForInterestIncome
162 Depreciation, depletion and amortisation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
163 Interest and other expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForInterestExpense
164 Exploration well write-offs [A] Concept (Monetary) For Period Debit rdsa:ExplorationWellWriteOffs
165 Net gains on sale and revaluation of non-current assets and businesses Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFairValueGainsLosses
166 Share of profit of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
167 Share-based compensation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
168 Dividends received from joint ventures and associates Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsOperatingActivities
169 Decrease/(increase) in inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
170 Decrease/(increase) in current receivables [A] Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
171 (Decrease)/increase in current payables [A] Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
172 Decrease in working capital Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
173 Derivative financial instruments [A] Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives
174 Deferred tax, retirement benefits, decommissioning and other provisions [A] Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
175 Other [A] Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities
176 Tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
177 Cash flow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
178 Capital expenditure Concept (Monetary) For Period Credit ifrs-full:PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities
179 Acquisition of BG Group plc Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
180 Acquisition of BG Group plc, net of cash and cash equivalents acquired Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
181 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsInvestingActivities
182 Investments in joint ventures and associates Concept (Monetary) For Period Credit rdsa:InvestmentInAssociateAndJointVenturesCompaniesClassifiedAsInvestingActivities
183 Proceeds from sale of property, plant and equipment and businesses Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
184 Proceeds from sale of joint ventures and associates Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
185 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsInvestingActivities
186 Other Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
187 Share-based compensation Concept (Monetary) For Period Debit rdsa:ProceedsFromSharebasedCompensation
188 Cash flow from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
189 Net decrease in debt with maturity period within three months Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings
190 Other debt: Abstract rdsa:OtherDebtAbstract
191 New borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
192 Repurchases of shares Concept (Monetary) For Period Credit ifrs-full:PaymentsToAcquireOrRedeemEntitysShares
193 Repayments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
194 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsFinancingActivities
195 Change in non-controlling interest Concept (Monetary) For Period Debit rdsa:ChangeInNoncontrollingInterest
196 Cash distributions made Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
197 Cash dividends paid to: Abstract rdsa:CashDividendsPaidAbstract
198 Royal Dutch Shell plc shareholders Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
199 Non-controlling interest Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
200 Repurchases of shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSaleOrIssueOfTreasuryShares
201 Shares held in trust: net purchases and dividends received Concept (Monetary) For Period Credit rdsa:PurchaseSalesAndDividendsReceivedNet
202 Cash flow from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
203 Currency translation differences relating to cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
204 Increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
205 Cash and cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
206 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
207 100070 - Statement - Consolidated Statement of Cash Flows (Parenthetical) Network

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208 Statements [Table] Table

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209 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
210 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
211 CNRL [Member] Member rdsa:CNRLMember
212 Woodside Petroleum Limited [Member] Member rdsa:WoodsideMember
213 Statements [Line Items] LineItems rdsa:StatementsLineItems
214 Proceeds from sale of interest Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInterestsInAssociates
215 100080 - Disclosure - Basis of Preparation Network

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216 Implied Table Table

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217 Disclosure Of Basis Of Preparation Of Financial Statements [Abstract] Abstract rdsa:DisclosureOfBasisOfPreparationOfFinancialStatementsAbstract
218 Basis of Preparation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
219 100090 - Disclosure - Significant Accounting Policies, Judgements and Estimates Network

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220 Implied Table Table

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222 Significant Accounting Policies, Judgements and Estimates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
223 100100 - Disclosure - Changes to IFRS Not Yet Adopted Network

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224 Implied Table Table

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226 Changes to IFRS Not Yet Adopted Concept (Text Block (HTML)) For Period rdsa:DisclosureOfChangesToIfrsNotYetAdoptedExplanatory
227 100110 - Disclosure - Segment Information Network

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228 Implied Table Table

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229 Disclosure Of Operating Segments [Abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
230 Segment Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
231 100120 - Disclosure - Interest and Other Income Network

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232 Implied Table Table

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233 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
234 Interest and Other Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExplanatory
235 100130 - Disclosure - Interest Expense Network

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236 Implied Table Table

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237 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
238 Interest Expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestExpenseExplanatory
239 100140 - Disclosure - Intangible Assets Network

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240 Implied Table Table

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241 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
242 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
243 100150 - Disclosure - Property, Plant and Equipment Network

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244 Implied Table Table

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245 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
246 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
247 100160 - Disclosure - Joint Ventures and Associates Network

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248 Implied Table Table

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249 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
250 Joint Ventures and Associates Concept (Text Block (HTML)) For Period rdsa:DisclosureOfJointVenturesAndAssociateExplanatory
251 100170 - Disclosure - Investments in Securities Network

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252 Implied Table Table

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254 Investments in Securities Concept (Text Block (HTML)) For Period rdsa:DisclosureOfInvestmentInSecuritiesExplanatory
255 100180 - Disclosure - Trade and Other Receivables Network

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256 Implied Table Table

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258 Trade and Other Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
259 100190 - Disclosure - Inventories Network

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260 Implied Table Table

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261 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
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263 100200 - Disclosure - Cash and Cash Equivalents Network

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264 Implied Table Table

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266 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
267 100210 - Disclosure - Debt and Lease Arrangements Network

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268 Implied Table Table

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269 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
270 Debt and Lease Arrangements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
271 100220 - Disclosure - Trade and Other Payables Network

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272 Implied Table Table

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273 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
274 Trade and Other Payables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
275 100230 - Disclosure - Taxation Network

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276 Implied Table Table

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277 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
278 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
279 100240 - Disclosure - Retirement Benefits Network

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280 Implied Table Table

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281 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
282 Retirement Benefits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
283 100250 - Disclosure - Decommissioning and Other Provisions Network

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284 Implied Table Table

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285 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
286 Decommissioning and Other Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
287 100260 - Disclosure - Financial Instruments Network

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288 Implied Table Table

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289 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
290 Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory
291 100270 - Disclosure - Share capital Network

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292 Implied Table Table

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293 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
294 Share capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
295 100280 - Disclosure - Share-based Compensation Plans and Shares Held in Trust Network

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296 Implied Table Table

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297 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
298 Share-based Compensation Plans and Shares Held in Trust Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
299 100290 - Disclosure - Other Reserves Network

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300 Implied Table Table

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301 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
302 Other Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
303 100300 - Disclosure - Dividends Network

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304 Implied Table Table

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305 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
306 Dividends Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDividendsExplanatory
307 100310 - Disclosure - Earnings Per Share Network

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308 Implied Table Table

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309 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
310 Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
311 100320 - Disclosure - Legal Proceedings and Other Contingencies Network

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312 Implied Table Table

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313 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
314 Legal Proceedings and Other Contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
315 100330 - Disclosure - Employees Network

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316 Implied Table Table

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317 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
318 Employees Concept (Text Block (HTML)) For Period rdsa:DisclosureOfEmployeesExplanatory
319 100340 - Disclosure - Directors and Senior Management Network

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320 Implied Table Table

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321 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
322 Directors and Senior Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
323 100350 - Disclosure - Auditor's Remuneration Network

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324 Implied Table Table

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325 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
326 Auditor's Remuneration Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailedInformationAboutAuditorsRemunerationExplanatory
327 100360 - Disclosure - Significant Accounting Policies, Judgements and Estimates (Policies) Network

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328 Implied Table Table

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329 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
330 Nature of the Consolidated Financial Statements Concept (Text Block (HTML)) For Period rdsa:DescriptionOfAccountingPolicyForNatureOfConsolidatedFinancialStatementsExplanatory
331 Currency Translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
332 Revenue Recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
333 Research and Development Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory
334 Exploration Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures
335 Property, Plant and Equipment and Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
336 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
337 Joint Arrangements and Associates Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
338 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
339 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTaxesOtherThanIncomeTaxExplanatory
340 Retirement Benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
341 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
342 Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
343 Fair Value Measurements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory
344 Share-based Compensation Plans Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
345 Shares Held in Trust Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTreasurySharesExplanatory
346 Acquisitions and Sales of Interests in a Business Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
347 Consolidated Statement of Income Presentation Concept (Text Block (HTML)) For Period rdsa:DescriptionOfAccountingPolicyForConsolidatedStatementOfIncomePresentationExplanatory
348 100370 - Disclosure - Segment Information (Tables) Network

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349 Implied Table Table

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350 Disclosure Of Operating Segments [Abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
351 Summary of Information by Segment on Current Cost of Supplies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
352 Summary of Reconciliation of CCS Earnings to Income Concept (Text Block (HTML)) For Period rdsa:DisclosureOfReconciliationOfEarningsToIncomeExplanatory
353 Summary of Information by Geographical Area Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
354 100380 - Disclosure - Interest and Other Income (Tables) Network

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355 Implied Table Table

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356 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
357 Summary of Interest and Other Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
358 100390 - Disclosure - Interest Expense (Tables) Network

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359 Implied Table Table

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360 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
361 Summary of Interest Expense Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailedInformationInterestExpenseExplanatory
362 100400 - Disclosure - Intangible Assets (Tables) Network

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363 Implied Table Table

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364 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
365 Summary of Intangible Assets and Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
366 100410 - Disclosure - Property, Plant and Equipment (Tables) Network

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367 Implied Table Table

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368 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
369 Summary of Property Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
370 Summary of Carrying Amount of Property, Plant and Equipment Held Under Finance Leases Concept (Text Block (HTML)) For Period rdsa:DisclosureOfNetCarryingAmountOfPropertyPlantAndEquipmentUnderFinanceLeaseArrangementsExplanatory
371 Summary of Impairments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
372 Commodity Price Assumptions Applied in Impairment Testing Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatory
373 Summary of Capitalised Exploration Drilling Costs Concept (Text Block (HTML)) For Period rdsa:DisclosureOfExplorationAndEvaluationAssetsAtCarryingValueExplanatory
374 100420 - Disclosure - Joint Ventures and Associates (Tables) Network

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375 Implied Table Table

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376 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
377 Summary of Shell Share of Comprehensive Income of Joint Ventures and Associates Concept (Text Block (HTML)) For Period rdsa:DisclosureOfComprehensiveIncomeOfJointVenturesAndAssociateExplanatory
378 Summary of Carrying Amount of Interests in Joint Ventures and Associates Concept (Text Block (HTML)) For Period rdsa:DisclosureOfCarryingAmountOfInterestsInJointVenturesAndAssociateExplanatory
379 Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
380 Summary of Other Arrangements in Respect of Joint Ventures and Associates Concept (Text Block (HTML)) For Period rdsa:DisclosureOfOtherArrangementsInRespectOfJointVenturesAndAssociatesExplanatory
381 100430 - Disclosure - Investments in Securities (Tables) Network

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382 Implied Table Table

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383 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
384 Schedule of Investments in Securities Concept (Text Block (HTML)) For Period rdsa:DisclosureOfInvestmentSecuritiesExplanatory
385 Schedule of Investments in Securities Using Predominantly Unobservable Inputs Concept (Text Block (HTML)) For Period rdsa:DisclosureOfInvestmentsInSecuritiesMeasuredUsingPredominantlyUnobservableInputsExplanatory
386 100440 - Disclosure - Trade and Other Receivables (Tables) Network

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387 Implied Table Table

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388 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
389 Summary of Trade and Other Receivables Concept (Text Block (HTML)) For Period rdsa:DisclosureDetailedInformationOfTradeAndOtherReceivablesExplanatory
390 Summary of Allowance for Expected Credit Losses Trade Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAllowanceForCreditLossesExplanatory
391 100450 - Disclosure - Inventories (Tables) Network

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392 Implied Table Table

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393 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
394 Summary of Detailed Information of Inventories Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailedInformationOfInventoriesExplanatory
395 100460 - Disclosure - Cash and Cash Equivalents (Tables) Network

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396 Implied Table Table

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397 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
398 Summary of Cash and Cash Equivalents and Short Term Bank Deposits Concept (Text Block (HTML)) For Period rdsa:DisclosureOfCashCashEquivalentsAndShortTermBankDepositsExplanatory
399 100470 - Disclosure - Debt and Lease Arrangements (Tables) Network

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400 Implied Table Table

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401 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
402 Schedule of Debt Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDebtSecuritiesExplanatory
403 Schedule of Net Debt Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDebtSecuritiesNetExplanatory
404 Schedule of Gearing Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailInformationAboutGearingRatioExplanatory
405 Schedule of Borrowing Facilities and Amounts Undrawn Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailedInformationOfUndrawnBorrowingFacilitiesExplanatory
406 Schedule of Difference in Contractual Cash Flows for Debt Excluding Finance Lease Liabilities Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDifferenceInContractualCashFlowsForDebtExcludingFinanceLeaseLiabilitiesExplanatory
407 Schedule of Future Minimum Lease Payments for Finance and Operating Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
408 100480 - Disclosure - Trade and Other Payables (Tables) Network

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409 Implied Table Table

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410 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
411 Summary of Detailed Information about Trade and other Payables Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailedInformationAboutTradeAndOtherPayablesExplanatory
412 100490 - Disclosure - Taxation (Tables) Network

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413 Implied Table Table

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414 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
415 Summary of Taxation Charges Concept (Text Block (HTML)) For Period rdsa:DisclosureOfInformationAtTaxationChargeExplanatory
416 Summary of Reconciliation of Applicable Tax Credit Charge at Statutory Tax Rates to Taxation Charge Concept (Text Block (HTML)) For Period rdsa:DisclosureOfReconciliationOfApplicableTaxChargeAtStatutorytAxRatesExplanatory
417 Summary of Tax Receivables and Payables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTaxReceivablesAndPayablesExplanatory
418 Summary of Deferred Tax Assets and Liabilities Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDeferredTaxAssetsAndLiabilitiesExplanatory
419 100500 - Disclosure - Retirement Benefits (Tables) Network

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420 Implied Table Table

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421 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
422 Summary of Employee Benefits Expense Concept (Text Block (HTML)) For Period rdsa:DisclosureOfEmployeeBenefitsExpenseExplanatory
423 Summary of Remeasurement of Net Defined Benefit Liability Asset Concept (Text Block (HTML)) For Period rdsa:DisclosureOfRemeasurementOfNetDefinedBenefitLiabilityAssetExplanatory
424 Summary of Defined Benefit Plans Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatory
425 Summary of Net Defined Benefit Liability Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
426 Summary of Sensitivity Analysis for Actuarial Assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
427 100510 - Disclosure - Decommissioning and Other Provisions (Tables) Network

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428 Implied Table Table

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429 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
430 Summary of Decommisionning and Other Provisions Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDecommissioningAndOtherProvisionsExplanatory
431 100520 - Disclosure - Financial Instruments (Tables) Network

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432 Implied Table Table

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433 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
434 Summary of 10% Appreciation Against the Dollar of Main Currencies Concept (Text Block (HTML)) For Period rdsa:DisclosureOfForeignExchangeRiskExplanatory
435 Schedule of Value at Risk Pre-tax Concept (Text Block (HTML)) For Period rdsa:DisclosureOfRiskManagementStrategyRelatedToValueAtRiskPreTaxExplanatory
436 Schedule of Trade and Other Receivables, Other Payables and Derivative Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory
437 Schedule of Carrying Amounts of Derivative Contracts Designated and Not Designated as Hedging Instruments for Hedge Accounting Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfHedgeAccountingExplanatory
438 Contractual Maturities of Derivative Liabilities Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForDerivativeFinancialLiabilities
439 Summary of Net Carrying Amounts of Derivative Contracts Held Concept (Text Block (HTML)) For Period rdsa:DisclosureOfNetCarryingAmountOfDerivativeContractsByLevelsOfFairValueHierarchyExplanatory
440 Summary of Net Carrying Amounts of Derivative Contracts Measured Using Predominantly Unobservable Inputs Concept (Text Block (HTML)) For Period rdsa:DisclosureOfNetCarryingAmountOfDerivativeContractMeasuredUnObservableInputsExplanatory
441 100530 - Disclosure - Share capital (Tables) Network

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442 Implied Table Table

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443 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
444 Summary of Issued and Fully Paid Ordinary Shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
445 100540 - Disclosure - Share-based Compensation Plans and Shares Held in Trust (Tables) Network

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446 Implied Table Table

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447 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
448 Summary of Share-based Compensation Expense Concept (Text Block (HTML)) For Period rdsa:DisclosureOfShareBasedCompensationExpenseExplanatory
449 Schedule of Share Awards Under Share Based Payment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
450 100550 - Disclosure - Other Reserves (Tables) Network

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451 Implied Table Table

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452 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
453 Summary of Other Reserves Attributable to Royal Dutch Shell Plc Shareholders Concept (Text Block (HTML)) For Period rdsa:DisclosureOfCapitalAndReservesExplanatory
454 Summary of Accumulated Other Comprehensive Income Attributable to Royal Dutch Shell Plc Shareholders Concept (Text Block (HTML)) For Period rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeExplanatory
455 100560 - Disclosure - Dividends (Tables) Network

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456 Implied Table Table

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457 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
458 Disclosure Of Dividends Paid And Proposed Explanatory Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDividendsPaidAndProposedExplanatory
459 100570 - Disclosure - Earnings Per Share (Tables) Network

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460 Implied Table Table

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461 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
462 Schedule of Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
463 100580 - Disclosure - Employees (Tables) Network

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464 Implied Table Table

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465 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
466 Summary of Employee Costs Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDetailedInformationAboutEmploymentCostsExplanatory
467 Summary of Average Employee Numbers Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutEmployeesExplanatory
468 100590 - Disclosure - Directors and Senior Management (Tables) Network

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469 Implied Table Table

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470 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
471 Summary of Remuneration of Directors of the Company Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDirectorsRemunerationExplanatory
472 Summary of Directors and Senior Management Expenses Concept (Text Block (HTML)) For Period rdsa:DisclosureOfDirectorsAndSeniorManagementExpenseExplanatory
473 100600 - Disclosure - Auditor's Remuneration (Tables) Network

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474 Implied Table Table

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475 Text Block1 [Abstract] Abstract rdsa:TextBlock1Abstract
476 Summary of Auditor's Remuneration Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAuditorsRemunerationExplanatory
477 100610 - Disclosure - Basis of Presentation - Additional Information (Detail) Network

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478 Implied Table Table

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479 Disclosure Of Basis Of Preparation Of Financial Statements [Abstract] Abstract rdsa:DisclosureOfBasisOfPreparationOfFinancialStatementsAbstract
480 Date of authorisation for issue of financial statements Concept (Date) For Period ifrs-full:DateOfAuthorisationForIssueOfFinancialStatements2013
481 100620 - Disclosure - Significant Accounting Policies, Judgements and Estimates - Additional Information (Detail) Network

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482 Disclosure Of Property Plant And Equipment [Table] Table

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483 Measurement [axis] Axis ifrs-full:MeasurementAxis
484 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
485 Recognition of additional provisions for impairment of receivables under the expected loss model [member] Member rdsa:ProvisionForImpairmentOfReceivablesMember
486 Changing the measurement basis from amortised cost to fair value [member] Member rdsa:RemeasurementOfAssetOnBasisOfMeasurementCategoryMember
487 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
488 Equity [member] Member ifrs-full:EquityMember
489 Other Reserves [Member] Member ifrs-full:OtherReservesMember
490 Retained Earnings [Member] Member ifrs-full:RetainedEarningsMember
491 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
492 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
493 Chemical Plants [Member] Member rdsa:ChemicalPlantsMember
494 Retail Service Stations [Member] Member rdsa:RetailServiceStationsMember
495 Upgraders [Member] Member rdsa:UpgradersMember
496 Range [axis] Axis ifrs-full:RangeAxis
497 Ranges [member] Member ifrs-full:RangesMember
498 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
499 Top of Range [Member] Member ifrs-full:TopOfRangeMember
500 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
501 Increase (Decrease) in Equity Concept (Monetary) As Of Debit ifrs-full:IncreaseDecreaseInFinancialAssetsArisingFromChangeInMeasurementAttributeFirstApplicationOfIFRS9
502 Impact of IFRS 9 Concept (Monetary) As Of Debit ifrs-full:IncreaseDecreaseInFinancialAssetsOnBasisOfMeasurementCategoryFirstApplicationOfIFRS9
503 Impact of adoption of IFRS 2 Concept (Monetary) For Period Credit rdsa:CumulativeEffectOfChangeInAccountingPoliciesInPeriodOfAdoption
504 Useful lives of tangible assets Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
505 Major inspection costs useful economic life Concept (Text/String) For Period rdsa:MajorInspectionCostsUsefulEconomicLife
506 100630 - Disclosure - Changes In IFRS Not Yet Adopted - Additional Information (Detail) Network

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507 Disclosure Of Initial Application Of Standards Or Interpretations [Table] Table

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508 Initially applied IFRSs [axis] Axis ifrs-full:InitiallyAppliedIFRSsAxis
509 Initially applied IFRSs [member] Member ifrs-full:InitiallyAppliedIFRSsMember
510 Initially Applied IFRS 9 [Member] Member rdsa:InitiallyAppliedIFRSNineMember
511 Description Of Expected Impact Of Initial Application Of New Standards Or Interpretations [Line Items] LineItems ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsLineItems
512 Lease liabilities Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities
513 Right of use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssetsThatDoNotMeetDefinitionOfInvestmentProperty
514 100640 - Disclosure - Segment Information - Information by Segment on Current Cost of Supplies (Detail) Network

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515 Disclosure Of Operating Segments [Table] Table

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516 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
517 Products and services [member] Member ifrs-full:ProductsAndServicesMember
518 CCS Earnings [Member] Member rdsa:CurrentCostOfSuppliesBasisEarningsMember
519 Segments [axis] Axis ifrs-full:SegmentsAxis
520 Segments [member] Member ifrs-full:SegmentsMember
521 Integrated Gas [Member] Member rdsa:IntegratedGasMember
522 Upstream [Member] Member rdsa:UpstreamMember
523 Downstream [Member] Member rdsa:DownstreamMember
524 Corporate [Member] Member rdsa:Corporate1Member
525 Reportable Segments [Member] Member ifrs-full:ReportableSegmentsMember
526 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
527 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
528 Operating Segments [Member] Member ifrs-full:OperatingSegmentsMember
529 Intersegment Eliminations [Member] Member ifrs-full:EliminationOfIntersegmentAmountsMember
530 Disclosure Of Operating Segments [Line Items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
531 CCS earnings Concept (Monetary) For Period Credit rdsa:CurrentCostOfSuppliesEarnings
532 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
533 Share of profit/(loss) of joint ventures and associates (CCS basis) Concept (Monetary) For Period Credit rdsa:CostOfSuppliesBasisAdjustmentOnShareOfProfitLossOfJointVenturesAndAssociates
534 Interest and other income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
535 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
536 Net gains on sale and revaluation of non-current assets and businesses Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfNoncurrentAssets
537 Depreciation, depletion and amortisation charge, of which: Concept (Monetary) For Period Debit ifrs-full:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
538 Impairment losses Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
539 Impairment reversals Concept (Monetary) For Period Credit ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss
540 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
541 Taxation charge/(credit) (CCS basis) Concept (Monetary) For Period Debit rdsa:CostOfSuppliesBasisAdjustmentOnTaxation
542 100650 - Disclosure - Segment Information - Information by Segment on Current Cost of Supplies (Parenthetical) (Detail) Network

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543 Implied Table Table

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544 Disclosure Of Operating Segments [Abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
545 Other revenue Concept (Monetary) For Period Credit ifrs-full:OtherRevenue
546 Impairment losses comprise Property, plant and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
547 Impairment losses comprise on intangible assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
548 100660 - Disclosure - Segment Information - Summary of Reconciliation of CCS Earnings to Income (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureSegmentInformationSummaryOfReconciliationOfCCSEarningsToIncomeDetail
549 Disclosure Of Reconciliation Of Earnings To Income [Table] Table

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 rdsa:DisclosureOfReconciliationOfEarningsToIncomeTable
550 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
551 Products and services [member] Member ifrs-full:ProductsAndServicesMember
552 CCS Earnings [Member] Member rdsa:CurrentCostOfSuppliesBasisEarningsMember
553 Disclosure Of Reconciliation Of Ccs Earnings To Income [Line Items] LineItems rdsa:DisclosureOfReconciliationOfCcsEarningsToIncomeLineItems
554 CCS earnings Concept (Monetary) For Period Credit rdsa:CurrentCostOfSuppliesEarnings
555 Current cost of supplies adjustment: Abstract rdsa:CurrentCostOfSuppliesAdjustmentAbstract
556 Purchases Concept (Monetary) For Period Credit rdsa:PurchasesAdjustmentCurrentCostOfSuppliesEarnings
557 Taxation Concept (Monetary) For Period Debit rdsa:CostOfSuppliesBasisAdjustmentOnTaxation
558 Share of profit of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
559 Current cost of supplies adjustment Concept (Monetary) For Period Credit rdsa:CurrentCostOfSuppliesAdjustment
560 Income for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
561 100670 - Disclosure - Segment Information - Summary of Information by Geographical Area (Detail) Network

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562 Disclosure Of Geographical Areas [Table] Table

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 ifrs-full:DisclosureOfGeographicalAreasTable
563 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
564 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
565 Europe [Member] Member srt:EuropeMember
566 Asia Oceania And Africa [Member] Member rdsa:AsiaOceaniaAndAfricaMember
567 United States [Member] Member country:US
568 Other Americas [Member] Member rdsa:OtherAmericasMember
569 Disclosure Of Geographical Areas [Line Items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
570 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
571 Intangible assets, property, plant and equipment, joint ventures and associates Concept (Monetary) As Of Debit rdsa:IntangibleAssetsPropertyPlantAndEquipmentJointVenturesAndAssociates
572 100680 - Disclosure - Segment Information - Summary of Information by Geographical Area (Parenthetical) (Detail) Network

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573 Disclosure Of Geographical Areas [Table] Table

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 ifrs-full:DisclosureOfGeographicalAreasTable
574 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
575 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
576 United Kingdom [Member] Member country:GB
577 Singapore Member country:SG
578 United States [Member] Member country:US
579 Europe [Member] Member srt:EuropeMember
580 Disclosure Of Geographical Areas [Line Items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
581 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
582 Intangible assets, property, plant and equipment, joint ventures and associates Concept (Monetary) As Of Debit rdsa:IntangibleAssetsPropertyPlantAndEquipmentJointVenturesAndAssociates
583 Third-party revenue increase (decrease) Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseInRevenue
584 Third-party revenue increase (decrease) Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseInRevenue
585 100690 - Disclosure - Interest and Other Income - Summary of Interest and Other Income (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureInterestAndOtherIncomeSummaryOfInterestAndOtherIncomeDetail
586 Implied Table Table

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587 Disclosure Of Interest And Other Income [Abstract] Abstract rdsa:DisclosureOfInterestAndOtherIncomeAbstract
588 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
589 Dividend income (from investments in equity securities) Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
590 Net gains on sale and revaluation of non-current assets and businesses Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfNoncurrentAssets
591 Net foreign exchange (losses)/gains on financing activities Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
592 Other Concept (Monetary) For Period Credit ifrs-full:OtherIncome
593 Total Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
594 100700 - Disclosure - Interest and Other Income - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureInterestAndOtherIncomeAdditionalInformationDetail
595 Implied Table Table

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 implied:Table
596 Disclosure Of Interest And Other Income [Abstract] Abstract rdsa:DisclosureOfInterestAndOtherIncomeAbstract
597 Revaluation gain recognised in net foreign exchange gains on financing activities Concept (Monetary) For Period Credit rdsa:RevaluationGainOnExchangeDifferences
598 Cumulative currency translation difference recognised on financing activities Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
599 Other net foreign exchange losses Concept (Monetary) For Period Credit rdsa:OtherForeignCurrencyExchangeGainsLosses
600 100710 - Disclosure - Interest Expense - Summary of Interest Expense (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureInterestExpenseSummaryOfInterestExpenseDetail
601 Implied Table Table

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 implied:Table
602 Disclosure Of Interest Expense [Abstract] Abstract rdsa:DisclosureOfInterestExpenseAbstract
603 Interest incurred and similar charges Concept (Monetary) For Period rdsa:InterestIncurredAndSimilarCharges
604 Less: interest capitalised Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
605 Other net losses on fair value hedges of debt Concept (Monetary) For Period Debit rdsa:OtherNetLossesGainsOnFairValueHedgesOfDebt
606 Accretion expense Concept (Monetary) For Period Debit rdsa:InterestAndAccretionExpense
607 Total Concept (Monetary) For Period Debit ifrs-full:InterestExpense
608 100720 - Disclosure - Interest Expense - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureInterestExpenseAdditionalInformationDetail
609 Implied Table Table

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610 Disclosure Of Interest Expense [Abstract] Abstract rdsa:DisclosureOfInterestExpenseAbstract
611 Percentage of interest capitalised Concept (Percent) For Period ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
612 100730 - Disclosure - Intangible Assets - Summary of Intangible Assets and Goodwill (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureIntangibleAssetsSummaryOfIntangibleAssetsAndGoodwillDetail
613 Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Table] Table

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 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
614 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
615 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
616 Goodwill [Member] Member ifrs-full:GoodwillMember
617 LNG Off Take and Sales Contracts [Member] Member rdsa:LNGOffTakeAndSalesContractsMember
618 Other Intangible Assets [Member] Member ifrs-full:OtherIntangibleAssetsMember
619 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
620 Carrying amount [member] Member ifrs-full:CarryingAmountMember
621 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
622 Depreciation, Depletion and Amortization, Including Impairments [Member] Member rdsa:DepreciationDepletionAndAmortizationIncludingImpairmentsMember
623 Disclosure Of Reconciliation Of Changes In Intangible Assets And Goodwill [Line Items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
624 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
625 Additions Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
626 Sales, retirements and other movements Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsIntangibleAssetsAndGoodwill
627 Currency translation differences Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
628 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
629 Beginning balance Concept (Monetary) As Of Credit rdsa:AmortisationOfIntangibleAssetsOtherThanGoodwill
630 Charge for the year Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesIntangibleAssetsAndGoodwill
631 Sales, retirements and other movements Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill
632 Ending balance Concept (Monetary) As Of Credit rdsa:AmortisationOfIntangibleAssetsOtherThanGoodwill
633 100740 - Disclosure - Intangible Assets - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureIntangibleAssetsAdditionalInformationDetail
634 Disclosure Of Intangible Assets [Table] Table

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 ifrs-full:DisclosureOfIntangibleAssetsTable
635 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
636 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
637 B G Group Plc Member rdsa:BGGroupPlcMember
638 Segments [axis] Axis ifrs-full:SegmentsAxis
639 Segments [member] Member ifrs-full:SegmentsMember
640 Integrated Gas [Member] Member rdsa:IntegratedGasMember
641 Upstream [Member] Member rdsa:UpstreamMember
642 Downstream [Member] Member rdsa:DownstreamMember
643 Disclosure Of Intangible Assets [Line Items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
644 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
645 100750 - Disclosure - Property, Plant and Equipment - Summary of Property Plant and Equipment (Detail) Network

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646 Disclosure Of Property Plant And Equipment [Table] Table

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*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
647 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
648 Assets [member] Member ifrs-full:ClassesOfAssetsMember
649 Exploration and Evaluation [Member] Member ifrs-full:ExplorationAndEvaluationAssetsMember
650 Production [Member] Member rdsa:ProductionMember
651 Manufacturing Supply and Distribution [Member] Member rdsa:ManufacturingSupplyAndDistributionMember
652 Other Assets [Member] Member ifrs-full:OtherAssetsMember
653 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
654 Carrying amount [member] Member ifrs-full:CarryingAmountMember
655 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
656 Accumulated Depreciation, Amortisation and Impairment [Member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
657 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
658 Beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
659 Beginning balance Concept (Monetary) As Of Credit rdsa:AccumulatedDepreciationDepletionAndAmortisationIncludingImpairments
660 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
661 Sales, retirements and other movements Concept (Monetary) For Period rdsa:DepreciationSurplusPropertyPlantAndEquipment
662 Sales, retirements and other movements Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
663 Currency translation differences Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
664 Ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
665 Ending balance Concept (Monetary) As Of Credit rdsa:AccumulatedDepreciationDepletionAndAmortisationIncludingImpairments
666 100760 - Disclosure - Property, Plant and Equipment - Summary of Property Plant and Equipment (Parenthetical) (Detail) Network

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667 Implied Table Table

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668 Disclosure Of Property Plant And Equipment [Abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
669 Sales, retirements and other movements reclassified from exploration and evaluation assets to production assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalOfExplorationAndEvaluationAssets
670 100770 - Disclosure - Property, Plant and Equipment - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformationDetail
671 Disclosure Of Property Plant And Equipment [Table] Table

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*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
672 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
673 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
674 Bangkot Field and Adjoining Acreage Offshore Thailand [Member] Member rdsa:BangkotFieldAndAdjoiningAcreageOffshoreThailandMember
675 Corrib Gas Venture [Member] Member rdsa:CorribGasVentureMember
676 Draugen Field [Member] Member rdsa:DraugenFieldMember
677 Gjøa Field [Member] Member rdsa:GjoaFieldMember
678 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
679 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
680 Thailand [Member] Member country:TH
681 Ireland [Member] Member country:IE
682 Norway [Member] Member country:NO
683 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
684 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
685 Exploration and Production [Member] Member rdsa:ExplorationAndProductionMember
686 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
687 Products and services [member] Member ifrs-full:ProductsAndServicesMember
688 Brent $ per barrel [Member] Member rdsa:BrentCrudeOilMember
689 Henry Hub $/MMBtu [Member] Member rdsa:HenryHubNaturalGasMember
690 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
691 Percentage of interest sold Concept (Percent) For Period rdsa:PercentageOfOperatedInterestSold
692 Percentage of non operated interest Concept (Percent) For Period rdsa:PercentageOfNonOperatedInterest
693 Carrying amount of assets under construction Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentExpendituresRecognisedForConstructions
694 Carrying amount of assets classified as held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
695 Carrying amount of exploration and production assets Concept (Monetary) As Of Debit rdsa:RightsAndConcessionsInRespectOfProvedAndUnprovedProperties
696 Carrying amount of asset for which an alternative reserves base was applied in the calculation of depreciation charge Concept (Monetary) As Of Debit rdsa:CarryingAmountOfAssetWithAlternativeReservesBaseCalculationOfDepreciation
697 Pre-tax depreciation charge increment if no alternative reserve base was applied Concept (Monetary) For Period Debit rdsa:DepreciationChargeIncrementWithNoAlternativeReserveBase
698 Contractual commitments for purchase of property, plant and equipment Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
699 Nominal pre-tax discount rate Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse
700 Commodity price after 2020 Concept (Decimal) For Period rdsa:CommodityPriceAfterYearThree
701 Commodity price after 2020 Concept (Decimal) For Period rdsa:CommodityPriceAfterYearFour
702 Exploration drilling costs capitalised Concept (Monetary) As Of Debit rdsa:CapitalisedExplorationDrillingCostDrillingUnderway
703 Number of projects where drilling activities were underway Concept (Integer) As Of rdsa:NumberOfWellsInProcessOfExploratoryDrilling
704 Projects awaiting development concepts Concept (Monetary) As Of Debit rdsa:CapitalisedExplorationDrillingCostAwaitingDevelopment
705 Number of projects awaiting further development concepts Concept (Integer) As Of rdsa:NumberOfNewWellsInProcessOfDrilling
706 100780 - Disclosure - Property, Plant and Equipment - Summary of Carrying Amount of Property, Plant and Equipment Held Under Finance Leases (Detail) Network

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707 Disclosure Of Property Plant And Equipment [Table] Table

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 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
708 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
709 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
710 Exploration and Production [Member] Member rdsa:ExplorationAndProductionMember
711 Manufacturing Supply and Distribution [Member] Member rdsa:ManufacturingSupplyAndDistributionMember
712 Other [Member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
713 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
714 Total property, plant and equipment held under finance leases Concept (Monetary) As Of Debit ifrs-full:RecognisedFinanceLeaseAsAssets
715 100790 - Disclosure - Property, Plant and Equipment - Summary of Impairments (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentSummaryOfImpairmentsDetail
716 Disclosure Of Impairment Loss And Reversal Of Impairment Loss [Table] Table

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*

 ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossTable
717 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
718 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
719 Exploration and Production [Member] Member rdsa:ExplorationAndProductionMember
720 Manufacturing Supply and Distribution [Member] Member rdsa:ManufacturingSupplyAndDistributionMember
721 Other [Member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
722 Disclosure Of Impairment Loss And Reversal Of Impairment Loss [Line Items] LineItems ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems
723 Impairment losses Abstract ifrs-full:WritedownsReversalsOfWritedownsOfPropertyPlantAndEquipmentAbstract
724 Total Impairment losses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
725 Impairment reversals Abstract ifrs-full:ImpairmentLossReversalOfImpairmentLossOnTradeReceivablesAbstract
726 Total Impairment reversals Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
727 100800 - Disclosure - Property, Plant and Equipment - Commodity Price Assumptions Applied in Impairment Testing (Detail) Network

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728 Explanation Of Inputs Assumptions And Estimation Techniques Used To Apply Impairment Requirements Explanatory [Table] Table

*

*

 rdsa:ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatoryTable
729 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
730 Products and services [member] Member ifrs-full:ProductsAndServicesMember
731 Brent $ per barrel [Member] Member rdsa:BrentCrudeOilMember
732 Henry Hub $/MMBtu [Member] Member rdsa:HenryHubNaturalGasMember
733 Explanation Of Inputs Assumptions And Estimation Techniques Used To Apply Impairment Requirements Explanatory [Line Items] LineItems rdsa:ExplanationOfInputsAssumptionsAndEstimationTechniquesUsedToApplyImpairmentRequirementsExplanatoryLineItems
734 Commodity price 2018 Concept (Decimal) For Period rdsa:CommodityPriceNextTwelveMonths
735 Commodity Price Year Three Concept (Decimal) For Period rdsa:CommodityPriceYearTwo
736 Commodity Price Year Four Concept (Decimal) For Period rdsa:CommodityPriceYearThree
737 100810 - Disclosure - Property, Plant and Equipment - Summary of Capitalised Exploration Drilling Costs (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentSummaryOfCapitalisedExplorationDrillingCostsDetail
738 Implied Table Table

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 implied:Table
739 Disclosure Of Capitalized Expenditures On Mining Interests To Expenditures On Mining Interests [Abstract] Abstract rdsa:DisclosureOfCapitalizedExpendituresOnMiningInterestsToExpendituresOnMiningInterestsAbstract
740 Beginning balance Concept (Monetary) As Of Debit ifrs-full:TangibleExplorationAndEvaluationAssets
741 Additions pending determination of proved reserves Concept (Monetary) For Period Debit rdsa:TangibleExplorationAndEvaluationAssetsAdditionsPendingDeterminationOfProvedReserves
742 Amounts charged to expense Concept (Monetary) For Period Debit rdsa:TangibleExplorationAndEvaluationAssetsAmountChargedToExpense
743 Reclassifications to productive wells on determination of proved reserves Concept (Monetary) For Period Debit rdsa:TangibleExplorationAndEvaluationAssetsReclassificationsToProductiveWellsOnDeterminationOfProvedReserves
744 Other movements Concept (Monetary) For Period Debit rdsa:TangibleExplorationAndEvaluationAssetsOtherMovements
745 Ending balance Concept (Monetary) As Of Debit ifrs-full:TangibleExplorationAndEvaluationAssets
746 100820 - Disclosure - Property, Plant and Equipment - Summary of Capitalised Exploration Drilling Costs (Parenthetical) (Detail) Network

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747 Implied Table Table

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748 Disclosure Of Capitalized Expenditures On Mining Interests To Expenditures On Mining Interests [Abstract] Abstract rdsa:DisclosureOfCapitalizedExpendituresOnMiningInterestsToExpendituresOnMiningInterestsAbstract
749 Capitalised exploration drilling costs Concept (Monetary) For Period Debit rdsa:CostsRevisedFromExplorationAndEvaluationToProductionAssets
750 100830 - Disclosure - Property, Plant and Equipment - Summary of Exploration Drilling Costs Capitalised for Periods Greater Than One Year (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosurePropertyPlantAndEquipmentSummaryOfExplorationDrillingCostsCapitalisedForPeriodsGreaterThanOneYearDetail
751 Disclosure Of Detailed Information About Exploration And Evaluation Assets [Table] Table

*

*

 rdsa:DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsTable
752 Maturity [axis] Axis ifrs-full:MaturityAxis
753 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
754 Between 1 and 5 Years [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
755 Between 6 and 10 Years [Member] Member rdsa:LaterThanSixYearsAndNotLaterThanTenYearsMember
756 Between 11 and 15 Years [Member] Member rdsa:LaterThanElevenYearsAndNotLaterThanFifteenYearsMember
757 Between 16 and 20 years [Member] Member rdsa:LaterThanSixteenYearsAndNotTaterThanTwentyYearsMember
758 Disclosure Of Detailed Information About Exploration And Evaluation Assets [Line Items] LineItems rdsa:DisclosureOfDetailedInformationAboutExplorationAndEvaluationAssetsLineItems
759 Projects, Number Concept (Integer) As Of rdsa:CapitalisedExplorationDrillingCostNumberOfProjects
760 Projects, Value Concept (Monetary) As Of Debit rdsa:CapitalisedExplorationDrillingCostProjects
761 Wells, Number Concept (Integer) As Of rdsa:CapitalisedExplorationDrillingCostNumberOfWells
762 Wells, Value Concept (Monetary) As Of Debit rdsa:CapitalisedExplorationDrillingCostWells
763 100840 - Disclosure - Joint Ventures and Associates - Summary of Shell Share of Comprehensive Income of Joint Ventures and Associates (Detail) Network

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764 Disclosure Of Joint Ventures And Associates [Table] Table

*

*

 rdsa:DisclosureOfJointVenturesAndAssociatesTable
765 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
766 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
767 Joint Ventures [Member] Member ifrs-full:JointVenturesMember
768 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
769 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
770 Associates [Member] Member ifrs-full:AssociatesMember
771 Disclosure Of Joint Ventures And Associates [Line Items] LineItems rdsa:DisclosureOfJointVenturesAndAssociatesLineItems
772 Income for the period Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
773 Other comprehensive income/(loss) for the period Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
774 Comprehensive income for the period Concept (Monetary) For Period Credit ifrs-full:ShareOfTotalComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
775 100850 - Disclosure - Joint Ventures and Associates - Summary of Carrying Amount of Interests in Joint Ventures and Associates (Detail) Network

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776 Implied Table Table

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777 Disclosure Of Carrying Amountof Interests In Joint Ventures And Associate [Abstract] Abstract rdsa:DisclosureOfCarryingAmountofInterestsInJointVenturesAndAssociateAbstract
778 Investments in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
779 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
780 Investments in joint ventures and associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
781 100860 - Disclosure - Joint Ventures and Associates - Summary of Transactions With Joint Ventures and Associates (Detail) Network

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782 Implied Table Table

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783 Disclosure Of Transactions Between Related Parties [Abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
784 Sales and charges to joint ventures and associates Concept (Monetary) For Period Credit rdsa:SalesAndChargesToJointVenturesAndAssociates
785 Purchases and charges from joint ventures and associates Concept (Monetary) For Period Debit rdsa:PurchasesAndChargesFromJointVenturesAndAssociates
786 100870 - Disclosure - Joint Ventures and Associates - Summary of Other Arrangements in Respect of Joint Ventures and Associates (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureJointVenturesAndAssociatesSummaryOfOtherArrangementsInRespectOfJointVenturesAndAssociatesDetail
787 Implied Table Table

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788 Disclosure Of Other Arrangements In Respect Of Joint Ventures And Associates [Abstract] Abstract rdsa:DisclosureOfOtherArrangementsInRespectOfJointVenturesAndAssociatesAbstract
789 Commitments to make purchases from joint ventures and associates Concept (Monetary) As Of Credit ifrs-full:CommitmentsInRelationToJointVentures
790 Commitments to provide debt or equity funding to joint ventures and associates Concept (Monetary) As Of Credit rdsa:CommitmentsToFinanceOrOtherwiseProvideResourcesToJointVenturesAndAssociates
791 100880 - Disclosure - Investments in Securities - Schedule of Investments in Securities (Detail) Network

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792 Disclosure Of Investments In Securities [Table] Table

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 rdsa:DisclosureOfInvestmentsInSecuritiesTable
793 Measurement [axis] Axis ifrs-full:MeasurementAxis
794 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
795 Fair Value Measured by Reference to Prices in Active Markets for Identical Assets [Member] Member rdsa:AtFairValuePriceInMarketsForIdenticalAssetsMember
796 At Fair Value Measured Using Predominantly Unobservable Inputs [Member] Member rdsa:AtFairValueRelationshipUnobservableInputsMember
797 At Fair Value [Member] Member ifrs-full:AtFairValueMember
798 At Cost [Member] Member ifrs-full:AtCostMember
799 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
800 Assets [member] Member ifrs-full:ClassesOfAssetsMember
801 Equity Securities [Member] Member ifrs-full:TradingEquitySecuritiesMember
802 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
803 Disclosure Of Investments In Securities [Line Items] LineItems rdsa:DisclosureOfInvestmentsInSecuritiesLineItems
804 Investments in securities Concept (Monetary) As Of Debit rdsa:InvestmentsInSecurities
805 Securities at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome
806 Debt securities at amortised cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
807 Securities at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
808 100890 - Disclosure - Investments in Securities - Additional Information (Detail) Network

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809 Disclosure Of Fair Value Of Investments In Equity Instruments Designated As Measured At Fair Value Through Other Comprehensive Income [Table] Table

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 ifrs-full:DisclosureOfFairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeTable
810 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
811 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
812 Canadian Natural Resources Limited Member rdsa:CanadianNaturalResourcesLimitedMember
813 Malaysia LNG Tiga Sdn Bhd [Member] Member rdsa:MalaysiaLngTigaMember
814 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
815 Assets [member] Member ifrs-full:ClassesOfAssetsMember
816 Equity Securities [Member] Member ifrs-full:TradingEquitySecuritiesMember
817 Disclosure Of Fair Value Of Investments In Equity Instruments Designated As Measured At Fair Value Through Other Comprehensive Income [Line Items] LineItems ifrs-full:DisclosureOfFairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeLineItems
818 Interest in equity securities Concept (Percent) As Of rdsa:PercentageOfInvestmentsInSecurities
819 Investments in securities Concept (Monetary) As Of Debit rdsa:InvestmentsInSecurities
820 100900 - Disclosure - Investments in Securities - Schedule of Investments in Securities Using Predominantly Unobservable Inputs (Detail) Network

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821 Disclosure Of Investments In Securities [Table] Table

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 rdsa:DisclosureOfInvestmentsInSecuritiesTable
822 Measurement [axis] Axis ifrs-full:MeasurementAxis
823 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
824 At Fair Value Measured Using Predominantly Unobservable Inputs [Member] Member rdsa:AtFairValueRelationshipUnobservableInputsMember
825 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
826 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
827 Level 3 of Fair Value Hierarchy [Member] Member ifrs-full:Level3OfFairValueHierarchyMember
828 Disclosure Of Investments In Securities [Line Items] LineItems rdsa:DisclosureOfInvestmentsInSecuritiesLineItems
829 Investments in securities, at beginning of period Concept (Monetary) As Of Debit rdsa:InvestmentsInSecurities
830 Gains/(losses) recognised in other comprehensive income Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets
831 Other movements Concept (Monetary) For Period Debit rdsa:OtherMovementsRelatingToInvestmentsInSecurities
832 Investments in securities, at end of period Concept (Monetary) As Of Debit rdsa:InvestmentsInSecurities
833 100910 - Disclosure - Trade and Other Receivables - Summary of Trade and Other Receivables (Detail) Network

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834 Implied Table Table

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835 Disclosure Of Trade And Other Receivables [Abstract] Abstract rdsa:DisclosureOfTradeAndOtherReceivablesAbstract
836 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
837 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
838 Amounts due from joint ventures and associates Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
839 Prepayments and deferred charges Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndCurrentAccruedIncome
840 Total Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
841 Trade receivables Concept (Monetary) As Of Debit ifrs-full:NoncurrentTradeReceivables
842 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentReceivables
843 Amounts due from joint ventures and associates Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivablesDueFromRelatedParties
844 Prepayments and deferred charges Concept (Monetary) As Of Debit ifrs-full:NoncurrentPrepaymentsAndNoncurrentAccruedIncome
845 Total Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
846 100920 - Disclosure - Trade and Other Receivables - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureTradeAndOtherReceivablesAdditionalInformationDetail
847 Implied Table Table

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848 Disclosure Of Trade And Other Receivables [Abstract] Abstract rdsa:DisclosureOfTradeAndOtherReceivablesAbstract
849 Other receivables after provision for impairments Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
850 Provisions for impairments deducted from trade and other receivables Concept (Monetary) As Of Debit rdsa:ProvisionForImpairmentDeductedFromTradeAndOtherReceivable
851 Loss allowance provision Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
852 100930 - Disclosure - Trade and Other Receivables - Summary of Allowance for Expected Credit Losses Trade Receivables (Detail) Network

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853 Disclosure Of Overdue Trade Receivables [Table] Table

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 rdsa:DisclosureOfOverdueTradeReceivablesTable
854 Maturity [axis] Axis ifrs-full:MaturityAxis
855 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
856 Not overdue [Member] Member rdsa:NotOverdueMember
857 Overdue 1-30 Days [Member] Member rdsa:UpToThirtyDaysMember
858 Overdue 31-180 Days [Member] Member rdsa:LaterThanThirtyDaysAndNotLaterThanOneEightyDaysMember
859 Overdue More Than 180 Days [Member] Member rdsa:LaterThanOneEightyDaysMember
860 Range [axis] Axis ifrs-full:RangeAxis
861 Ranges [member] Member ifrs-full:RangesMember
862 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
863 Top of Range [Member] Member ifrs-full:TopOfRangeMember
864 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
865 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
866 Trade Receivables [Member] Member ifrs-full:TradeReceivablesMember
867 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
868 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
869 Expected Credit Losses Collectively Assessed [Member] Member ifrs-full:ExpectedCreditLossesCollectivelyAssessedMember
870 Disclosure Of Overdue Trade Receivables [Line Items] LineItems rdsa:DisclosureOfOverdueTradeReceivablesLineItems
871 Expected loss rate Concept (Percent) As Of ifrs-full:ExpectedCreditLossRate
872 Gross carrying amount Concept (Monetary) As Of Debit rdsa:GrossCarryingAmount
873 Loss allowance provision Concept (Monetary) As Of Credit rdsa:AllowanceForCreditLossesProvision
874 Net carrying amount Concept (Monetary) As Of Debit rdsa:NetCarryingAmount
875 100940 - Disclosure - Inventories - Summary of Detailed Information of Inventories (Detail) Network

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876 Implied Table Table

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877 Classes Of Inventories [Abstract] Abstract ifrs-full:ClassesOfInventoriesAbstract
878 Oil, gas and chemicals Concept (Monetary) As Of Debit ifrs-full:ProductionSupplies
879 Materials Concept (Monetary) As Of Debit ifrs-full:RawMaterials
880 Total Concept (Monetary) As Of Debit ifrs-full:Inventories
881 100950 - Disclosure - Inventories - Additional Information (Detail) Network

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882 Implied Table Table

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883 Classes Of Inventories [Abstract] Abstract ifrs-full:ClassesOfInventoriesAbstract
884 Provision on the inventory value Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
885 100960 - Disclosure - Cash and Cash Equivalents - Summary of Cash and Cash Equivalents and Short Term Bank Deposits (Detail) Network

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886 Implied Table Table

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887 Cash And Cash Equivalents [Abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
888 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
889 Short-term bank deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
890 Money market funds, reverse repos and other cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
891 Total Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
892 100970 - Disclosure - Cash and Cash Equivalents - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureCashAndCashEquivalentsAdditionalInformationDetail
893 Implied Table Table

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894 Cash And Cash Equivalents [Abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
895 Restricted cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
896 100980 - Disclosure - Debt and Lease Arrangements - Schedule of Debt (Detail) Network

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897 Disclosure Of Debt [Table] Table

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 rdsa:DisclosureOfDebtTable
898 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
899 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
900 Short-Term Debt [Member] Member rdsa:ShorttermDebt1Member
901 Long-Term Debt Due Within 1 Year [Member] Member rdsa:LongTermDebtDueWithInOneYearMember
902 Current Debt [Member] Member rdsa:CurrentDebtMember
903 Non-Current Debt [Member] Member rdsa:NonCurrentDebtMember
904 Disclosure Of Debt [Line Items] LineItems rdsa:DisclosureOfDebtLineItems
905 Debt (excluding finance lease liabilities) Concept (Monetary) As Of Credit rdsa:DebtExcludeFinancialLeasesLiabilities
906 Finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
907 Debt short term Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
908 Total Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
909 Debt short term Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
910 Debt long term Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
911 Total Concept (Monetary) As Of Credit ifrs-full:Borrowings
912 100990 - Disclosure - Debt and Lease Arrangements - Schedule of Net Debt (Detail) Network

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913 Disclosureof Net Debt [Table] Table

*

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 rdsa:DisclosureofNetDebtTable
914 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
915 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
916 Current Debt [Member] Member rdsa:CurrentDebtMember
917 Non-Current Debt [Member] Member rdsa:NonCurrentDebtMember
918 Derivative financial instruments [Member] Member ifrs-full:DerivativesMember
919 Cash And Cash Equivalent Member rdsa:CashAndCashEquivalentMember
920 Debt1 Member rdsa:Debt1Member
921 Disclosure Of Net Debt [Line Items] LineItems rdsa:DisclosureOfNetDebtLineItems
922 Beginning balance Concept (Monetary) As Of Credit rdsa:BorrowingsRepayment
923 Cash flow Concept (Monetary) For Period Debit rdsa:IncreaseDecreaseInDebtDueToFinancingCashFlows
924 Finance lease additions Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseInDebtDueToFinanceLeaseAdditions
925 Other movements Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseInDebtDueToOtherMovements
926 Currency translation differences and foreign exchange gains/(losses) Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseInDebtDueToCurrencyTranslationDifferencesAndForeignExchangeLossesGains
927 Ending balance Concept (Monetary) As Of Credit rdsa:BorrowingsRepayment
928 101000 - Disclosure - Debt and Lease Arrangements - Additional Information (Detail) Network

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929 Disclosure Of Detailed Information About Borrowings [Table] Table

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 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
930 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
931 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
932 Derivative financial instruments [Member] Member ifrs-full:DerivativesMember
933 Range [axis] Axis ifrs-full:RangeAxis
934 Ranges [member] Member ifrs-full:RangesMember
935 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
936 Top of Range [Member] Member ifrs-full:TopOfRangeMember
937 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
938 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
939 CP Programmes [Member] Member rdsa:CommercialPaperProgrammeMember
940 EMTN Programme [Member] Member rdsa:EuroMediumTermNoteProgramMember
941 Universal Shelf Registration [Member] Member rdsa:UniversalShelfRegistrationMember
942 Credit impairment of financial instruments [axis] Axis ifrs-full:CreditImpairmentOfFinancialInstrumentsAxis
943 Credit impairment of financial instruments [member] Member ifrs-full:CreditImpairmentOfFinancialInstrumentsMember
944 Credit Facility [Member] Member rdsa:CreditFacilityMember
945 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
946 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
947 Royal Dutch Shell Dividend Access Trust [Member] Member rdsa:SubsidiaryMember
948 Disclosure Of Detailed Information About Borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
949 Collateral On Debt Related Derivatives Concept (Monetary) As Of Debit rdsa:CollateralOnDebtRelatedDerivatives
950 Expected gearing ratio Concept (Percent) As Of rdsa:PercentageOfGearingRatio
951 Gearing ratio Concept (Percent) As Of rdsa:PercentageOfNetGearingRatio
952 Issuance of Debt Concept (Monetary) As Of Credit rdsa:ShortTermCreditFacility
953 Debt maturity period Concept (Text/String) For Period rdsa:ShorttermBorrowingsMaximumMaturityPeriod
954 Issuance of Debt Concept (Monetary) As Of Credit rdsa:LongTermCreditFacility
955 Debt maturity period Concept (Text/String) For Period rdsa:LongTermBorrowingsMaximumMaturityPeriod
956 Net debt Concept (Monetary) As Of Credit ifrs-full:NetDebt
957 Debt issued Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
958 Credit facility expires Concept (Text/String) For Period rdsa:FacilityExpiryDate
959 Undrawn borrowing facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
960 Fair value of debt excluding finance lease liabilities Concept (Monetary) As Of Credit rdsa:FairValueOfDebtExcludingFinancialLeasesLiabilities
961 Amounts expected to be received under non-cancellable sub leases Concept (Monetary) As Of Debit ifrs-full:ExpectedFutureMinimumSubleasePaymentsReceivableUnderNoncancellableSubleasesClassifiedFinanceLease
962 Operating lease Concept (Monetary) As Of Debit ifrs-full:ExpectedFutureMinimumSubleasePaymentsReceivableUnderNoncancellableSubleasesClassifiedAsOperatingLease
963 Operating lease expense Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
964 101010 - Disclosure - Debt and Lease Arrangements - Schedule of Gearing (Detail) Network

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965 Implied Table Table

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966 Gearing [Abstract] Abstract rdsa:GearingAbstract
967 Gearing ratio Concept (Percent) As Of rdsa:PercentageOfNetGearingRatio
968 Net debt Concept (Monetary) As Of Credit ifrs-full:NetDebt
969 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
970 Total capital Concept (Monetary) As Of Credit rdsa:Capital1
971 101020 - Disclosure - Debt and Lease Arrangements - Schedule of Borrowing Facilities and Amounts Undrawn (Detail) Network

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972 Disclosure Of Borrowing Facilities [Table] Table

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 rdsa:DisclosureOfBorrowingFacilitiesTable
973 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
974 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
975 CP Programmes [Member] Member rdsa:CommercialPaperProgrammeMember
976 EMTN Programme [Member] Member rdsa:EuroMediumTermNoteProgramMember
977 US Registration [Member] Member rdsa:UniversalShelfRegistrationMember
978 Committed Credit Facility [Member] Member rdsa:CommittedCreditFacilityMember
979 Borrowing Facilities [Line Items] LineItems rdsa:BorrowingFacilitiesLineItems
980 Borrowing facilities Concept (Monetary) As Of Credit rdsa:BorrowingFacilities
981 Borrowing facilities Concept (Text/String) For Period rdsa:UndrawnBorrowingFacilitiesDescription
982 Undrawn borrowing facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
983 101030 - Disclosure - Debt and Lease Arrangements - Schedule of Difference in Contractual Cash Flows for Debt Excluding Finance Lease Liabilities (Detail) Network

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984 Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Table] Table

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985 Maturity [axis] Axis ifrs-full:MaturityAxis
986 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
987 Less Than 1 Year [Member] Member ifrs-full:NotLaterThanOneYearMember
988 Between 1 and 2 Years [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
989 Between 2 and 3 Years [Member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
990 Between 3 and 4 Years [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
991 Between 4 and 5 Years [Member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
992 5 Years and Later [Member] Member ifrs-full:LaterThanFiveYearsMember
993 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
994 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
995 Bonds [Member] Member rdsa:BondIssuedMember
996 Bank and Other Borrowings [Member] Member rdsa:BankAndOtherBorrowingsMember
997 Total Exclude Interest [Member] Member rdsa:ExcludeInterestMember
998 Commercial Paper [Member] Member rdsa:CommericalPaperMember
999 Disclosure Of Maturity Analysis For Nonderivative Financial Liabilities [Line Items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1000 Bonds Concept (Monetary) As Of Credit ifrs-full:BondsIssuedUndiscountedCashFlows
1001 Bank and other borrowings Concept (Monetary) As Of Credit ifrs-full:BankBorrowingsUndiscountedCashFlows
1002 Total (excluding interest) Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
1003 Interest Concept (Monetary) As Of Credit rdsa:ContractualPaymentsInterestValue
1004 Difference from carrying amount Concept (Monetary) As Of ifrs-full:DifferenceBetweenCarryingAmountOfFinancialLiabilityAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligation
1005 Carrying amount Concept (Monetary) As Of Credit ifrs-full:Borrowings
1006 Commercial paper Concept (Monetary) As Of Credit rdsa:CommercialPaperUndiscountedCashFlows
1007 101040 - Disclosure - Debt and Lease Arrangements - Schedule of Future Minimum Lease Payments for Finance and Operating Leases (Detail) Network

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1008 Disclosure Of Finance Lease And Operating Lease By Lessee [Table] Table

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 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
1009 Maturity [axis] Axis ifrs-full:MaturityAxis
1010 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1011 Less Than 1 Year [Member] Member ifrs-full:NotLaterThanOneYearMember
1012 Between 1 and 5 Years [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1013 5 Years and Later [Member] Member ifrs-full:LaterThanFiveYearsMember
1014 Disclosure Of Finance Lease And Operating Lease By Lessee [Line Items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1015 Finance leases, Future minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
1016 Finance leases Interest Concept (Monetary) As Of Credit rdsa:FinanceLeasesInterest
1017 Finance leases, Present value of future minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
1018 Operating leases Future minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1019 101050 - Disclosure - Debt and Lease Arrangements - Schedule of Future Minimum Lease Payments for Finance and Operating Leases (Parathetical) (Detail) Network

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1020 Disclosure Of Finance Lease And Operating Lease By Lessee [Table] Table

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1021 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1022 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1023 Drilling Ancillary Equipment Member rdsa:DrillingAncillaryEquipmentMember
1024 Disclosure Of Finance Lease And Operating Lease By Lessee [Line Items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1025 Operating leases Future minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1026 101060 - Disclosure - Trade and Other Payables - Summary of Detailed Information About Trade and Other Payables (Detail) Network

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1027 Trade And Other Payables [Table] Table

*

*

 rdsa:TradeAndOtherPayablesTable
1028 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1029 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1030 Trade and Other Payables Current [Member] Member rdsa:TradeAndOtherPayablesCurrentMember
1031 Trade and Other Payables Non-Current [Member] Member rdsa:TradeAndOtherPayablesNoncurrentMember
1032 Trade And Other Payables [Line Items] LineItems rdsa:TradeAndOtherPayablesLineItems
1033 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToTradeSuppliers
1034 Other payables Concept (Monetary) As Of Credit ifrs-full:OtherPayables
1035 Amounts due to joint ventures and associates Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToRelatedParties
1036 Amounts due to joint ventures and associates Concept (Monetary) As Of Credit ifrs-full:NoncurrentPayablesToRelatedParties
1037 Accruals and deferred income Concept (Monetary) As Of Credit ifrs-full:AccrualsAndDeferredIncome
1038 Total Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1039 101070 - Disclosure - Taxation - Summary of Taxation Charges (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureTaxationSummaryOfTaxationChargesDetail
1040 Implied Table Table

*

*

 implied:Table
1041 Income Taxes [Abstract] Abstract rdsa:IncomeTaxesAbstract
1042 Current tax: Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
1043 Charge in respect of current period Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
1044 Adjustments in respect of prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1045 Total Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
1046 Relating to the origination and reversal of temporary differences, tax losses and credits Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
1047 Relating to changes in tax rates and legislation Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
1048 Adjustments in respect of prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
1049 Total Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1050 Total taxation charge Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1051 101080 - Disclosure - Taxation - Summary of Reconciliation of Applicable Tax Charge Credit at Statutory Tax Rates to Taxation Charge (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureTaxationSummaryOfReconciliationOfApplicableTaxChargeCreditAtStatutoryTaxRatesToTaxationChargeDetail
1052 Implied Table Table

*

*

 implied:Table
1053 Disclosure Of Income Tax [Abstract] Abstract rdsa:DisclosureOfIncomeTaxAbstract
1054 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1055 Share of profit of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1056 Income before taxation and share of profit of joint ventures and associates Concept (Monetary) For Period Credit rdsa:IncomeLossBeforeTaxAndShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1057 Applicable tax charge/(credit) at statutory tax rates Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1058 Adjustments in respect of prior periods Concept (Monetary) For Period Debit rdsa:TaxRateEffectOfAdjustmentsForCurrentTaxOfPriorPeriodsAmount
1059 Tax effects of: Abstract rdsa:TaxEffectOfAbstract
1060 Income not subject to tax at statutory rates Concept (Monetary) For Period Debit rdsa:TaxEffectOfIncomeNotSubjectToTaxAtStatutoryRates
1061 Expenses not deductible for tax purposes Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1062 (Recognition)/derecognition of deferred tax assets Concept (Monetary) For Period Debit rdsa:TaxEffectOfRecognitionDerecognitionOfDeferredTaxAssets
1063 Deductible items not expensed Concept (Monetary) For Period Credit rdsa:TaxEffectOfDeductibleItemsNotExpensed
1064 Taxable income not recognised Concept (Monetary) For Period Debit rdsa:TaxEffectOfTaxableIncomeNotRecognized
1065 Changes in tax rates and legislation Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
1066 Other Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1067 Total taxation charge Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1068 101090 - Disclosure - Taxation - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureTaxationAdditionalInformationDetail
1069 Disclosure Of Income Taxes [Table] Table

*

*

 rdsa:DisclosureOfIncomeTaxesTable
1070 Currency Axis srt:CurrencyAxis
1071 All Currencies Member currency:AllCurrenciesDomain
1072 Brazil Real Australian Dollar and Argentinian Peso [Member] Member rdsa:BrazilRealAustralianDollarAndArgentinianPesoMember
1073 Disclosure Of Income Taxes [Line Items] LineItems rdsa:DisclosureOfIncomeTaxesLineItems
1074 Weighted average of statutory tax rates Concept (Percent) For Period rdsa:WeightedAverageStatutoryIncomeTaxRate
1075 Impact of currency movements on deferred tax positions, included in other reconciling items Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
1076 Income tax recoverable Concept (Monetary) As Of Debit rdsa:IncomeTaxRecoverable
1077 Deferred tax assets dependent on future taxable profits Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssetWhenUtilisationIsDependentOnFutureTaxableProfitsInExcessOfProfitsFromReversalOfTaxableTemporaryDifferencesAndEntityHasSufferedLossInJurisdictionToWhichDeferredTaxAssetRelates
1078 Unrecognised taxable temporary differences associated with undistributed retained earnings of investments in subsidiaries, joint ventures and associates Concept (Monetary) As Of ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
1079 Unrecognised deductible temporary differences, unused tax losses and credits carried forward Concept (Monetary) As Of ifrs-full:UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognised
1080 Unrecognised deductible temporary differences, unused tax losses and credits carried forward that are subject to time limits for utilisation of five years or later or are not time limited Concept (Monetary) As Of Debit rdsa:UnusedTaxCreditsForWhichNoDeferredTaxAssetRecognisedSubjectToTimeLimitsForUtilisationOfFiveYearsOrLaterOrNotTimeLimited
1081 101100 - Disclosure - Taxation - Summary of Tax Receivables and Payables (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureTaxationSummaryOfTaxReceivablesAndPayablesDetail
1082 Implied Table Table

*

*

 implied:Table
1083 Disclosure Of Income Tax Payables And Receivables [Abstract] Abstract rdsa:DisclosureOfIncomeTaxPayablesAndReceivablesAbstract
1084 Income taxes Concept (Monetary) As Of Credit rdsa:IncomeTaxPayable
1085 Sales taxes, excise duties and similar levies Concept (Monetary) As Of Credit ifrs-full:CurrentValueAddedTaxPayables
1086 Total Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
1087 101110 - Disclosure - Taxation - Summary of Deferred Tax Assets and Liabilities (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureTaxationSummaryOfDeferredTaxAssetsAndLiabilitiesDetail
1088 Disclosure Of Deferred Tax Assets And Liabilities [Table] Table

*

*

 rdsa:DisclosureOfDeferredTaxAssetsAndLiabilitiesTable
1089 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1090 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1091 Decommissioning And Other Provisions Member rdsa:DecommissioningAndOtherProvisionsMember
1092 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1093 Tax Losses and Credits Carried Forward [Member] Member rdsa:TaxLossesCarriedForwardMember
1094 Retirement Benefits Member rdsa:RetirementBenefitsMember
1095 Other temporary differences [member] Member ifrs-full:OtherTemporaryDifferencesMember
1096 Consolidated and separate financial statements [axis] Axis ifrs-full:ConsolidatedAndSeparateFinancialStatementsAxis
1097 Consolidated [member] Member ifrs-full:ConsolidatedMember
1098 Balance Sheet [Member] Member rdsa:BalanceSheetMember
1099 Disclosure Of Deferred Tax Assets And Liabilities [Line Items] LineItems rdsa:DisclosureOfDeferredTaxAssetsAndLiabilitiesLineItems
1100 Deferred tax asset, Beginning balance Concept (Monetary) As Of Debit rdsa:DeferredTaxAssetsBeforeOffsetting
1101 (Charge)/credit to income Concept (Monetary) For Period Debit rdsa:DeferredTaxAssetsExpenseIncomeRecognisedInProfitOrLoss
1102 Currency translation differences Concept (Monetary) For Period Debit rdsa:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxAsset
1103 Other Concept (Monetary) For Period Debit rdsa:DeferredTaxAssetsRecognizedInOtherMovements
1104 Deferred tax asset, Ending balance Concept (Monetary) As Of Debit rdsa:DeferredTaxAssetsBeforeOffsetting
1105 Deferred tax liability, Beginning Balance Concept (Monetary) As Of Credit rdsa:DeferredTaxLiabilityBeforeOffsetting
1106 (Charge)/credit to income Concept (Monetary) For Period Credit rdsa:DeferredTaxLiabilitiesExpenseIncomeRecognisedInProfitOrLoss
1107 Currency translation differences Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiability
1108 Other Concept (Monetary) For Period Credit rdsa:DeferredTaxLiabilitiesRecognizedInOtherMovements
1109 Deferred tax liability, Ending Balance Concept (Monetary) As Of Credit rdsa:DeferredTaxLiabilityBeforeOffsetting
1110 Net deferred tax liability Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
1111 Net deferred tax assets Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
1112 101120 - Disclosure - Retirement Benefits - Summary of Retirement Benefit Expense (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureRetirementBenefitsSummaryOfRetirementBenefitExpenseDetail
1113 Implied Table Table

*

*

 implied:Table
1114 Classes Of Employee Benefits Expense [Abstract] Abstract ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
1115 Defined benefit plans: Abstract rdsa:DefinedBenefitPlansAbstract
1116 Current service cost, net of plan participants’ contributions Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1117 Interest expense on obligations Concept (Monetary) For Period Debit rdsa:InterestExpenseOnRetirementBenefitObligation
1118 Interest income on plan assets Concept (Monetary) For Period Credit ifrs-full:InvestmentIncome
1119 Other Concept (Monetary) For Period Debit ifrs-full:OtherEmployeeExpense
1120 Total Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1121 Defined contribution plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1122 Total retirement benefit expense Concept (Monetary) For Period Debit rdsa:PostemploymentBenefitExpenseDefinedBenefitPlansAndDefinedContributionPlan
1123 101130 - Disclosure - Retirement Benefits - Summary of Remeasurement of Net Defined Benefit Liability Assets (Detail) Network

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1124 Implied Table Table

*

*

 implied:Table
1125 Disclosure Of Net Defined Benefit Liability Asset [Abstract] Abstract ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetAbstract
1126 Actuarial gains/(losses) on obligations: Abstract ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract
1127 Due to changes in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1128 Due to experience adjustments Concept (Monetary) For Period Credit rdsa:ActuarialGainsLossesArisingFromChangesInExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1129 Due to changes in demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
1130 Total Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1131 Return on plan assets (shortage)/in excess of interest income Concept (Monetary) For Period Credit rdsa:ReturnOnPlanAssetsInExcessOfInterestIncome
1132 Other movements Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
1133 Total remeasurements Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1134 101140 - Disclosure - Retirement Benefits - Summary of Defined Benefit Plans (Detail) Network

*

*

 http://www.shell.com/20181231/taxonomy/role/DisclosureRetirementBenefitsSummaryOfDefinedBenefitPlansDetail
1135 Implied Table Table

*

*

 implied:Table
1136 Disclosure Of Defined Benefit Plans [Abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
1137 Obligations Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1138 Plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1139 Net liability Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
1140 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentRecognisedAssetsDefinedBenefitPlan
1141 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
1142 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentRecognisedLiabilitiesDefinedBenefitPlan
1143 101160 - Disclosure - Retirement Benefits - Summary of Defined Benefit Plan Obligations (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureRetirementBenefitsSummaryOfDefinedBenefitPlanObligationsDetail
1144 Disclosure Of Net Defined Benefit Liability Asset [Table] Table

*

*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1145 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1146 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1147 Funded Pension Plans [Member] Member rdsa:FundedPensionPlansMember
1148 Unfunded Pension Plans [Member] Member rdsa:UnfundedPensionPlansMember
1149 Other Unfunded Plans [Member] Member rdsa:OtherUnfundedPlansMember
1150 Quoted in Active Markets [Member] Member rdsa:QuotedInActiveMarketsMember
1151 Other [Member] Member rdsa:OtherQuotedInActiveMarketsMember
1152 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1153 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1154 Defined Benefit Pension Plans [Member] Member rdsa:DefinedBenefitPensionPlansMember
1155 Defined Benefit Plan Assets [Member] Member rdsa:DefinedBenefitPlanAssetsMember
1156 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1157 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1158 Equity Securities [Member] Member ifrs-full:TradingEquitySecuritiesMember
1159 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
1160 Real Estate [Member] Member rdsa:RealEstate1Member
1161 Investment Funds [Member] Member ifrs-full:InvestmentFundsMember
1162 Others [Member] Member rdsa:OthersMember
1163 Disclosure Of Net Defined Benefit Liability Asset [Line Items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1164 Beginning balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1165 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1166 Return on plan assets (in excess of interest income) Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1167 Interest expense/income Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1168 Employer contribution Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1169 Due to changes in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1170 Plan participants? contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
1171 Benefit payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1172 Other movements Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
1173 Currency translation differences Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
1174 Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1175 Weighted average duration Concept (xbrli:durationItemType) For Period rdsa:WeightedAverageDurationOfDefinedBenefitObligations
1176 Contributions to plan net defined benefit liability asset in percentage Concept (Percent) As Of rdsa:DefinedBenefitPlanAssetAllocationPercentage
1177 Cash Concept (Percent) As Of rdsa:PercentageOfCashInDefinedBenefitPlanAssets
1178 101170 - Disclosure - Retirement Benefits - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAdditionalInformationDetail
1179 Disclosure Of Defined Benefit Plans [Table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1180 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1181 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1182 Events After Reporting Period [Member] Member rdsa:EventsAfterReportingPeriodMember
1183 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
1184 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
1185 Defined Benefit Plan Assets [Member] Member rdsa:DefinedBenefitPlanAssetsMember
1186 Range [axis] Axis ifrs-full:RangeAxis
1187 Ranges [member] Member ifrs-full:RangesMember
1188 Top of Range [Member] Member ifrs-full:TopOfRangeMember
1189 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
1190 Statement Geographical Axis srt:StatementGeographicalAxis
1191 Segment Geographical Member srt:SegmentGeographicalDomain
1192 Netherlands [Member] Member country:NL
1193 Disclosure Of Defined Benefit Plans [Line Items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1194 Employer contributions to defined benefit pension plans Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1195 Description of additional payment to defined benefit plan Concept (Text/String) For Period rdsa:DescriptionOfAdditionalPaymentToDefinedBenefitPlan
1196 Percentage of average local funding requirment for additional payments Concept (Percent) As Of rdsa:PercentageOfAverageLocalFundingRequirementForAdditionalPayments
1197 101180 - Disclosure - Retirement Benefits - Summary of Sensitivity Analysis for Actuarial Assumptions (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureRetirementBenefitsSummaryOfSensitivityAnalysisForActuarialAssumptionsDetail
1198 Disclosure Of Sensitivity Analysis For Actuarial Assumptions [Table] Table

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 ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1199 Gender Type Axis rdsa:GenderTypeAxis
1200 Gender Type Member rdsa:GenderTypeDomain
1201 Men [Member] Member rdsa:MenMember
1202 Women [Member] Member rdsa:WomenMember
1203 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1204 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1205 Actuarial Assumption of Rate of Increase in Pensionable Remuneration [Member] Member rdsa:ActuarialAssumptionOfRateOfIncreaseInPensionableRemunerationMember
1206 Actuarial Assumption of Rate of Increase in Pensions in Payment [Member] Member rdsa:ActuarialAssumptionOfRateOfIncreaseInPensionsInPaymentMember
1207 Actuarial Assumption of Rate of Increase in Healthcare Costs [Member] Member rdsa:ActuarialAssumptionOfRateOfIncreaseInHealthcareCostsMember
1208 Actuarial Assumption of Discount Rate For Pension Plans [Member] Member rdsa:ActuarialAssumptionOfDiscounTrateForPensionPlansMember
1209 Actuarial Assumption of Discount Rate For Healthcare Plans [Member] Member rdsa:ActuarialAssumptionOfDiscountRateForHealthCarePlansMember
1210 Range [axis] Axis ifrs-full:RangeAxis
1211 Ranges [member] Member ifrs-full:RangesMember
1212 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
1213 Top of Range [Member] Member ifrs-full:TopOfRangeMember
1214 Disclosure Of Sensitivity Analysis For Actuarial Assumptions [Line Items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1215 Discount rate Concept (Percent) As Of rdsa:PercentageOfActuarialAssumption
1216 Range of assumptions Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
1217 Range of assumptions Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
1218 Range of assumptions Concept (Text/String) For Period rdsa:DescriptionOfReasonablyPossibleIncreaseDecreaseInActuarialAssumption
1219 Increase/(decrease) in defined benefit obligations Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1220 Increase/(decrease) in defined benefit obligations Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1221 Average age Concept (Text/String) For Period rdsa:AverageAge
1222 101190 - Disclosure - Decommissioning and Other Provisions - Summary of Decommissioning and Other Provisions (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureDecommissioningAndOtherProvisionsSummaryOfDecommissioningAndOtherProvisionsDetail
1223 Disclosures Of Decommissioning And Other Provisions [Table] Table

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*

 rdsa:DisclosuresOfDecommissioningAndOtherProvisionsTable
1224 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1225 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1226 Decommissioning and Restoration [Member] Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1227 Legal [Member] Member ifrs-full:LegalProceedingsProvisionMember
1228 Other [Member] Member rdsa:OtherProvisionMember
1229 Environmental [Member] Member ifrs-full:OtherEnvironmentRelatedProvisionMember
1230 Redundancy [Member] Member rdsa:RedundancyMember
1231 Disclosures Of Decommissioning And Other Provisions [Line Items] LineItems rdsa:DisclosuresOfDecommissioningAndOtherProvisionsLineItems
1232 Current beginning balance Concept (Monetary) As Of Credit rdsa:CurrentDecommissioningRestorationAndOtherProvisions
1233 Non-current beginning balance Concept (Monetary) As Of Credit rdsa:LongtermDecommissioningRestorationAndOtherProvisions
1234 Decommisioning and other provision beginning balance Concept (Monetary) As Of Credit rdsa:DecommissioningRestorationAndOtherProvisions
1235 Additions Concept (Monetary) For Period Credit rdsa:AdditionalProvisionsDecommissioningRestorationAndOtherProvisions
1236 Amounts charged against provisions Concept (Monetary) For Period Credit rdsa:ChargesAgainstProvisionsOfDecommissioningRestorationAndOtherProvisions
1237 Accretion expense Concept (Monetary) For Period Credit rdsa:AmountOfAccretionExpenseDecommissioningRestorationAndOtherProvisions
1238 Disposals Concept (Monetary) For Period Credit rdsa:DisposalsOfDecommissioningRestorationAndOtherProvisions
1239 Remeasurements and other movements Concept (Monetary) For Period Credit rdsa:RemeasurementsAndOtherMovementsOfDecommissioningRestorationAndOtherProvisions
1240 Currency translation differences Concept (Monetary) For Period Credit rdsa:CurrencyTranslationDifferencesDecommissioningRestorationAndOtherProvisions
1241 Change in decommisioning and other provisions Concept (Monetary) For Period Credit rdsa:ChangesInDecommissioningRestorationAndOtherProvisions
1242 Current ending balance Concept (Monetary) As Of Credit rdsa:CurrentDecommissioningRestorationAndOtherProvisions
1243 Non-current ending balance Concept (Monetary) As Of Credit rdsa:LongtermDecommissioningRestorationAndOtherProvisions
1244 Decommisioning and other provision ending balance Concept (Monetary) As Of Credit rdsa:DecommissioningRestorationAndOtherProvisions
1245 101200 - Disclosure - Decommissioning and Other Provisions - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureDecommissioningAndOtherProvisionsAdditionalInformationDetail
1246 Disclosures Of Decommissioning And Other Provisions [Table] Table

*

*

 rdsa:DisclosuresOfDecommissioningAndOtherProvisionsTable
1247 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1248 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1249 Decommissioning and Restoration [Member] Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1250 Maturity [axis] Axis ifrs-full:MaturityAxis
1251 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1252 Between 1 and 5 Years [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1253 Between 6 and 10 Years [Member] Member rdsa:LaterThanSixYearsAndNotLaterThanTenYearsMember
1254 Disclosure Of Other Provisions [Line Items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1255 Discount rate applied to provision Concept (Percent) As Of ifrs-full:DiscountRateUsedInCurrentMeasurementOfFairValueLessCostsOfDisposal
1256 Amount of provisions expected to be utilized Concept (Monetary) As Of Credit ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCosts
1257 101210 - Disclosure - Financial Instruments - Additional Information (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureFinancialInstrumentsAdditionalInformationDetail
1258 Disclosure Of Risk Management Strategy Related To Hedge Accounting [Table] Table

*

*

 ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingTable
1259 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1260 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1261 Floating Interest Rate [Member] Member ifrs-full:FloatingInterestRateMember
1262 Types of financial assets [axis] Axis ifrs-full:TypesOfFinancialAssetsAxis
1263 Financial assets, type [member] Member ifrs-full:FinancialAssetsTypeMember
1264 Trade Receivables [Member] Member ifrs-full:TradeReceivablesMember
1265 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
1266 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
1267 Trade Payables [Member] Member rdsa:TradePayablesMember
1268 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
1269 Hedges [member] Member ifrs-full:TypesOfHedgesMember
1270 Commodity Derivatives [Member] Member rdsa:CommodityDerivativesMember
1271 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1272 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1273 Interest Rate and Currency Derivatives [Member] Member rdsa:InterestRateAndCurrencyDerivativesMember
1274 Other Contracts [Member] Member rdsa:OtherContractsMember
1275 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1276 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1277 Derivative Carrying Amount [Member] Member rdsa:DerivativeCarryingAmountMember
1278 Disclosure Of Risk Management Strategy Related To Hedge Accounting [Line Items] LineItems ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems
1279 Increase in interest rate risk Concept (Percent) As Of rdsa:IncreaseDecreaseInInterestRate
1280 Decrease in income before taxation Concept (Monetary) For Period Debit rdsa:IncreaseDecreaseIncomeBeforeTaxationOfOnePercentageInInterestRates
1281 Foreign exchange risk management Concept (Percent) For Period rdsa:PercentageOfForeignExchangeRiskRevenue
1282 Percentage of value at risk statistical assessment Concept (Percent) For Period rdsa:ValueAtRiskStatisticalPercentage
1283 Carrying amount of financial assets pledged as collateral for liabilities or contingent liabilities Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
1284 Carrying amount of collateral held Concept (Monetary) As Of Credit rdsa:CarryingAmountOfCollateral
1285 Net (losses) gains on derivative contracts excluding realized commodity contracts, before tax Concept (Monetary) As Of Credit rdsa:NetLossesGainsOnDerivativeContractsExcludingRealisedCommodityContractsBeforeTax
1286 Net carrying amount of commodity derivative contracts Concept (Monetary) For Period Credit rdsa:CarryingAmountOfCommodityDerivativeContractsDesignatedAsCashFlowHedgingInstruments
1287 Liability of derivative contracts, net of accrued interest Concept (Monetary) As Of Debit rdsa:DerivativeContractNetOfAccruedInterestAssetsLiability
1288 Embedded derivative expiry term Concept (Text/String) For Period rdsa:LongtermEmbeddedDerivativesExpiryTerm
1289 Unrealized net losses related to assets and liabilities Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForEntitysOwnEquityInstrumentsHeldAtEndOfPeriodFairValueMeasurement
1290 101220 - Disclosure - Financial Instruments - Summary of 10% Appreciation Against the Dollar of Main Currencies (Detail) Network

*

*

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1291 Disclosure Of Foreign Exchange Risk [Table] Table

*

*

 rdsa:DisclosureOfForeignExchangeRiskTable
1292 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1293 Risks [member] Member ifrs-full:TypesOfRisksMember
1294 10% Percentage Appreciation [Member] Member rdsa:TenPercentageAppreciationMember
1295 Currency Axis srt:CurrencyAxis
1296 All Currencies Member currency:AllCurrenciesDomain
1297 Canadian Dollar [Member] Member currency:CAD
1298 Euro [Member] Member currency:EUR
1299 Australian Dollar [Member] Member currency:AUD
1300 Sterling [Member] Member currency:GBP
1301 Disclosure Of Foreign Exchange Risk [Line Items] LineItems rdsa:DisclosureOfForeignExchangeRiskLineItems
1302 Increase/(decrease) in income before taxation Concept (Monetary) For Period Credit rdsa:IncreaseDecreaseInIncomeBeforeTaxationOnForeignExchangeRisk
1303 Increase in net assets Concept (Monetary) For Period Debit rdsa:IncreaseDecreaseInNetAssetsOfForeignExchangeRisk
1304 101230 - Disclosure - Financial Instruments - Schedule of Value at Risk Pre-tax (Detail) Network

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*

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1305 Disclosure Of Risk Management Strategy Related To Hedge Accounting [Table] Table

*

*

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1306 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1307 Risks [member] Member ifrs-full:TypesOfRisksMember
1308 Commodity Price Risk [Member] Member ifrs-full:CommodityPriceRiskMember
1309 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1310 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1311 Global Oil [Member] Member rdsa:GlobalOilMember
1312 North America Gas and Power [Member] Member rdsa:NorthAmericaGasAndPowerMember
1313 Europe Gas and Power [Member] Member rdsa:EuropeGasAndPowerMember
1314 Carbon-Emission Rights [Member] Member rdsa:CarbonEmissionRightsMember
1315 Disclosure Of Risk Management Strategy Related To Hedge Accounting [Line Items] LineItems ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems
1316 Value At Risk Concept (Monetary) As Of ifrs-full:ValueAtRisk
1317 101240 - Disclosure - Financial Instruments - Schedule of Trade and Other Receivables, Other Payables and Derivative Financial Instruments (Detail) Network

*

*

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1318 Disclosure Of Offsetting Of Financial Assets [Table] Table

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*

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1319 Types of financial assets [axis] Axis ifrs-full:TypesOfFinancialAssetsAxis
1320 Financial assets, type [member] Member ifrs-full:FinancialAssetsTypeMember
1321 Trade Receivables [Member] Member ifrs-full:TradeReceivablesMember
1322 Derivative Financial Assets [Member] Member rdsa:DerivativeFinancialAssetsMember
1323 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
1324 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
1325 Trade Payables [Member] Member rdsa:TradePayablesMember
1326 Derivative Financial Liabilities [Member] Member rdsa:DerivativeFinancialLiabilitiesMember
1327 Disclosure Of Offsetting Of Financial Assets [Line Items] LineItems ifrs-full:DisclosureOfOffsettingOfFinancialAssetsLineItems
1328 Gross amounts before offset Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1329 Amounts off set Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1330 Net amounts as presented Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1331 Cash collateral received/pledged Concept (Monetary) As Of Credit ifrs-full:CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1332 Other off setting instruments Concept (Monetary) As Of Credit rdsa:AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstOtherFinancialAssets
1333 Net amounts Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1334 Gross amounts before offset Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1335 Amounts off set Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1336 Net amounts as presented Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1337 Cash collateral received/pledged Concept (Monetary) As Of Debit ifrs-full:CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1338 Other off setting instruments Concept (Monetary) As Of Debit rdsa:AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstOtherFinancialLiabilities
1339 Net amounts Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1340 101250 - Disclosure - Financial Instruments - Schedule of Carrying Amounts of Derivative Contracts Designated and Not Designated as Hedging Instruments for Hedge Accounting (Detail) Network

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1341 Disclosure Of Detailed Information About Hedging Instruments [Table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsTable
1342 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1343 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1344 Interest Rate Swaps [Member] Member ifrs-full:InterestRateSwapContractMember
1345 Forward Foreign Exchange Contracts [Member] Member rdsa:ForwardForeignExchangeContractsMember
1346 Currency Swap and Options [Member] Member ifrs-full:CurrencySwapContractMember
1347 Commodity Derivatives [Member] Member rdsa:CommodityDerivativesMember
1348 Other Contracts [Member] Member rdsa:OtherContractsMember
1349 Disclosure Of Detailed Information About Hedging Instruments [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems
1350 Assets Designated Concept (Monetary) As Of Debit rdsa:FinancialAssetsDesignatedAsHedgingInstruments
1351 Assets Not designated Concept (Monetary) As Of Debit rdsa:FinancialAssetsNotDesignatedAsHedgingInstruments
1352 Assets, Total Concept (Monetary) As Of Debit ifrs-full:HedgingInstrumentAssets
1353 Liabilities Designated Concept (Monetary) As Of Credit rdsa:FinancialLiabilitiesDesignatedAsHedgingInstruments
1354 Liabilities Not designated Concept (Monetary) As Of Credit rdsa:FinancialLiabilitiesNotDesignatedAsHedgingInstruments
1355 Liabilities, Total Concept (Monetary) As Of Credit ifrs-full:HedgingInstrumentLiabilities
1356 Net Concept (Monetary) As Of Credit rdsa:DerivativeInstrumentsInHedgesLiabilitiesAsset
1357 101260 - Disclosure - Financial Instruments - Contractual Maturities of Derivative Liabilities (Detail) Network

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*

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1358 Disclosure Of Maturity Analysis For Derivative Financial Liabilities [Table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable
1359 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1360 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1361 Interest Rate Swaps [Member] Member ifrs-full:InterestRateSwapContractMember
1362 Forward Foreign Exchange Contracts [Member] Member rdsa:ForwardForeignExchangeContractsMember
1363 Currency Swaps and Options [Member] Member rdsa:CurrencySwapsAndOptionsMember
1364 Commodity Derivatives [Member] Member rdsa:CommodityDerivativesMember
1365 Other Contracts [Member] Member rdsa:OtherContractsMember
1366 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1367 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1368 Gross Carrying Amount [Member] Member ifrs-full:GrossCarryingAmountMember
1369 Difference from Carrying Amount [Member] Member rdsa:DiscountedMember
1370 Maturity [axis] Axis ifrs-full:MaturityAxis
1371 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1372 Less than 1 Year [Member] Member ifrs-full:NotLaterThanOneYearMember
1373 Later Than One Year and Not Later Than Two Years [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1374 Later Than Two Years and Not Later Than Three Years [Member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1375 Later Than Three Years and Not Later Than Four Years [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1376 Later Than Four Years and Not Later Than Five Years [Member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1377 5 years and Later [Member] Member ifrs-full:LaterThanFiveYearsMember
1378 Disclosure Of Maturity Analysis For Derivative Financial Liabilities [Line Items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesLineItems
1379 Derivative liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1380 101270 - Disclosure - Financial Instruments - Summary of Net Carrying Amounts of Derivative Contracts Held (Detail) Network

*

*

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1381 Disclosure Of Fair Value Measurement Of Net Carrying Amount Of Derivative Contracts [Table] Table

*

*

 rdsa:DisclosureOfFairValueMeasurementOfNetCarryingAmountOfDerivativeContractsTable
1382 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1383 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1384 Level 1 of fair value hierarchy [Member] Member ifrs-full:Level1OfFairValueHierarchyMember
1385 Level 2 of fair value hierarchy [Member] Member ifrs-full:Level2OfFairValueHierarchyMember
1386 Level 3 of Fair Value Hierarchy [Member] Member ifrs-full:Level3OfFairValueHierarchyMember
1387 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1388 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1389 Interest Rate Swaps [Member] Member ifrs-full:InterestRateSwapContractMember
1390 Forward Foreign Exchange Contracts [Member] Member rdsa:ForwardForeignExchangeContractsMember
1391 Currency Swaps and Options [Member] Member rdsa:CurrencySwapAndOptionsContractMember
1392 Commodity Derivatives [Member] Member rdsa:CommodityDerivativesMember
1393 Other Contracts [Member] Member rdsa:OtherContractsMember
1394 Disclosure Of Fair Value Measurement Of Net Carrying Amount Of Derivative Contracts [Line Items] LineItems rdsa:DisclosureOfFairValueMeasurementOfNetCarryingAmountOfDerivativeContractsLineItems
1395 Interest rate swaps Concept (Monetary) As Of Credit rdsa:NetCarryingAmountsOfDerivativeContractsAtFairValue
1396 101280 - Disclosure - Financial Instruments - Summary of Net Carrying Amounts of Derivative Contracts Measured Using Predominantly Unobservable Inputs (Detail) Network

*

*

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1397 Disclosure Of Significant Unobservable Inputs Used In Fair Value Measurement Of Liabilities [Table] Table

*

*

 ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfLiabilitiesTable
1398 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
1399 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
1400 Unobservable Inputs [Member] Member rdsa:FairValueRelationshipUnobservableInputsMember
1401 Disclosure Of Significant Unobservable Inputs Used In Fair Value Measurement Of Liabilities [Line Items] LineItems ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfLiabilitiesLineItems
1402 Beginning balance Concept (Monetary) As Of Debit rdsa:NetCarryingAmountsOfDerivativeContractsAtFairValueBeginningBalance
1403 Net (losses)/gains recognised in revenue Concept (Monetary) For Period Credit rdsa:GainLossesRecognisedRevenueInSignificantUnobservableInputs
1404 Purchases Concept (Monetary) For Period Debit rdsa:PurchasesInSignificantUnobservableInputs
1405 Sales Concept (Monetary) For Period Credit rdsa:SalesInSignificantUnobservableInputs
1406 Recategorisations (net) Concept (Monetary) As Of Debit rdsa:RecategorisationsNetInSignificantUnobservableInputs
1407 Currency translation differences Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
1408 Ending balance Concept (Monetary) As Of Debit rdsa:NetCarryingAmountsOfDerivativeContractsAtFairValueEndingBalance
1409 101290 - Disclosure - Share Capital - Summary of Issued and Fully Paid Ordinary Shares (Detail) Network

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*

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1410 Disclosure Of Classes Of Share Capital [Table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1411 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1412 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1413 Class A Shares [Member] Member rdsa:ClassASharesMember
1414 Class B Shares [Member] Member rdsa:ClassBSharesMember
1415 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1416 Equity [member] Member ifrs-full:EquityMember
1417 Share Capital [Member] Member ifrs-full:IssuedCapitalMember
1418 Disclosure Of Classes Of Share Capital [Line Items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1419 Beginning balance, in shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssuedAndFullyPaid
1420 Repurchases of shares, in shares Concept (Shares) For Period rdsa:NumberOfSharesRepurchased
1421 Scrip dividends, in shares Concept (Shares) For Period rdsa:ScripDividendsShares
1422 Ending balance, in shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssuedAndFullyPaid
1423 Beginning balance Concept (Monetary) As Of Credit rdsa:OrdinarySharesIssuedAndFullyPaidValue
1424 Repurchases of shares Concept (Monetary) For Period Debit ifrs-full:PurchaseOfTreasuryShares
1425 Scrip dividends Concept (Monetary) For Period Debit rdsa:ScripDividends
1426 Ending balance Concept (Monetary) As Of Credit rdsa:OrdinarySharesIssuedAndFullyPaidValue
1427 101300 - Disclosure - Share Capital - Summary of Issued and Fully Paid Ordinary Shares (Parenthetical) (Detail) Network

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*

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1428 Disclosure Of Classes Of Share Capital [Table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1429 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1430 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1431 Ordinary Shares A [Member] Member rdsa:OrdinarySharesAMember
1432 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1433 Equity [member] Member ifrs-full:EquityMember
1434 Share Capital [Member] Member ifrs-full:IssuedCapitalMember
1435 Disclosure Of Classes Of Share Capital [Line Items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1436 Issued and fully paid ordinary shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1437 Deferred share, per share Concept (Share) For Period rdsa:DeferredSharesRedeemablePerShare
1438 101310 - Disclosure - Share Capital - Additional Information (Detail) Network

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*

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1439 Disclosure Of Classes Of Share Capital [Table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1440 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1441 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1442 Ordinary Shares Issue Mandate [Member] Member rdsa:OrdinarySharesIssueMandateMember
1443 Range [axis] Axis ifrs-full:RangeAxis
1444 Ranges [member] Member ifrs-full:RangesMember
1445 Top of Range [Member] Member ifrs-full:TopOfRangeMember
1446 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
1447 Disclosure Of Classes Of Share Capital [Line Items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1448 Common stock, value authorised Concept (Monetary) As Of Credit rdsa:AuthorisedCapital
1449 Common stock, shares authorised Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1450 Issued and fully paid ordinary shares, per share Concept (Share) As Of ifrs-full:ParValuePerShare
1451 Percentage of repurchase of its issued shares Concept (Percent) For Period rdsa:PercentageOfRepurchase
1452 Percentage of average market value Concept (Percent) For Period rdsa:PercentageAverageMarketValueOfOrdinaryShare
1453 101320 - Disclosure - Share-based Compensation Plans and Shares Held in Trust - Summary of Share-Based Compensation Expense (Detail) Network

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1454 Disclosure Of Share Based Compensation Expense [Table] Table

*

*

 rdsa:DisclosureOfShareBasedCompensationExpenseTable
1455 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1456 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1457 Equity-Settled [Member] Member rdsa:EquitySettledMember
1458 Cash-Settled [Member] Member rdsa:CashSettledMember
1459 Disclosure Of Share Based Compensation Expense [Line Items] LineItems rdsa:DisclosureOfShareBasedCompensationExpenseLineItems
1460 Share-based compensation expense Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1461 101330 - Disclosure - Share-based Compensation Plans and Shares Held in Trust - Additional Information (Detail) Network

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1462 Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1463 Range [axis] Axis ifrs-full:RangeAxis
1464 Ranges [member] Member ifrs-full:RangesMember
1465 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
1466 Top of Range [Member] Member ifrs-full:TopOfRangeMember
1467 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1468 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1469 A Class Shares Member rdsa:AClassSharesMember
1470 B Class Shares Member rdsa:BClassSharesMember
1471 A Class American Depositary Shares Member rdsa:AClassAmericanDepositarySharesMember
1472 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1473 Equity [member] Member ifrs-full:EquityMember
1474 Shares Held By Employee Share Trusts Member rdsa:SharesHeldByEmployeeShareTrustsMember
1475 Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1476 Vesting percentage of share-based compensation Concept (Percent) For Period rdsa:SharebasedPaymentArrangementVestingRightsPercentage
1477 Number of share options outstanding, in shares Concept (Shares) As Of rdsa:NumberOfShareOptionsOutstanding
1478 101340 - Disclosure - Share-based Compensation Plans and Shares Held in Trust - Schedule of Share Awards Under Share Based Payment (Detail) Network

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1479 Disclosure Of Share Based Compensation Expense [Table] Table

*

*

 rdsa:DisclosureOfShareBasedCompensationExpenseTable
1480 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1481 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1482 Share Awards Under Psp And Ltip Member rdsa:ShareAwardsUnderPspAndLtipMember
1483 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1484 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1485 A Class Shares Member rdsa:AClassSharesMember
1486 B Class Shares Member rdsa:BClassSharesMember
1487 A Class American Depositary Shares Member rdsa:AClassAmericanDepositarySharesMember
1488 Disclosure Of Share Based Compensation Expense [Line Items] LineItems rdsa:DisclosureOfShareBasedCompensationExpenseLineItems
1489 Beginning balance Concept (Shares) As Of rdsa:NumberOfShareOptionsOutstanding
1490 Granted, in shares Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1491 Vested, in shares Concept (Decimal) For Period rdsa:NumberOfShareOptionsVestedInSharebasedPaymentArrangement
1492 Forfeited, in shares Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1493 Ending balance Concept (Shares) As Of rdsa:NumberOfShareOptionsOutstanding
1494 Weighted average remaining contractual life (years), Beginning Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
1495 Weighted average remaining contractual life (years), Ending Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
1496 101350 - Disclosure - Other Reserves - Summary of Other Reserves Attributable to Royal Dutch Shell Plc Shareholders (Detail) Network

*

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1497 Disclosure Of Accumulated Other Comprehensive Income Loss [Table] Table

*

*

 rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossTable
1498 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1499 Equity [member] Member ifrs-full:EquityMember
1500 Merger Reserve [Member] Member ifrs-full:MergerReserveMember
1501 Share Premium Reserve [Member] Member rdsa:SharePremiumReserveMember
1502 Capital Redemption Reserve [Member] Member ifrs-full:CapitalRedemptionReserveMember
1503 Share Plan Reserve [Member] Member rdsa:SharePlanReserveMember
1504 Accumulated Other Comprehensive Income [Member] Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
1505 Other Reserves [Member] Member ifrs-full:OtherReservesMember
1506 Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] LineItems rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossLineItems
1507 Beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1508 Impact of IFRS 9 implementation Concept (Monetary) As Of Debit ifrs-full:IncreaseDecreaseInFinancialAssetsArisingFromChangeInMeasurementAttributeFirstApplicationOfIFRS9
1509 At January 1, 2018 (as revised) Concept (Monetary) As Of Credit rdsa:OtherReservesAsRevised
1510 Comprehensive income/(loss) attributable to Royal Dutch Shell plc shareholders Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
1511 Transfer from other comprehensive income Concept (Monetary) For Period Debit rdsa:TransferToProfitOrLossOtherComprehensiveIncome
1512 Scrip dividends Concept (Monetary) For Period Debit rdsa:ScripDividends
1513 Repurchase of shares Concept (Monetary) For Period Credit rdsa:RepurchaseOfShares
1514 Shares issued Concept (Monetary) For Period Credit rdsa:SharesIssuedAmountDuringPeriod
1515 Share-based compensation Concept (Monetary) As Of Debit rdsa:ShareBasedCompensation1
1516 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1517 101360 - Disclosure - Other Reserves - Summary of Other Reserves Attributable to Royal Dutch Shell Plc Shareholders (Paranthetical) (Detail) Network

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1518 Disclosure Of Accumulated Other Comprehensive Income Loss [Table] Table

*

*

 rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossTable
1519 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1520 Equity [member] Member ifrs-full:EquityMember
1521 Other Reserves [Member] Member ifrs-full:OtherReservesMember
1522 Retained Earnings [Member] Member ifrs-full:RetainedEarningsMember
1523 Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] LineItems rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossLineItems
1524 Reclassification between other reserves and retained earnings related to unwinding of expired share options Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings
1525 Impact of adoption of IFRS 2 Concept (Monetary) For Period Credit rdsa:CumulativeEffectOfChangeInAccountingPoliciesInPeriodOfAdoption
1526 101370 - Disclosure - Other Reserves - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureOtherReservesAdditionalInformationDetail
1527 Implied Table Table

*

*

 implied:Table
1528 Other Reserves [Abstract] Abstract ifrs-full:OtherReservesAbstract
1529 Tax related to vested awards Concept (Monetary) For Period Debit rdsa:TaxRelatedToVestedAwards
1530 101380 - Disclosure - Other Reserves - Summary of Accumulated Other Comprehensive Income Attributable to Royal Dutch Shell Plc Shareholders (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureOtherReservesSummaryOfAccumulatedOtherComprehensiveIncomeAttributableToRoyalDutchShellPlcShareholdersDetail
1531 Disclosure Of Accumulated Other Comprehensive Income Loss [Table] Table

*

*

 rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossTable
1532 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1533 Equity [member] Member ifrs-full:EquityMember
1534 Currency Translation Differences [Member] Member rdsa:ForeignCurrencyTranslationDifferencesMember
1535 Unrealised Gains/ (Losses) on Securities [Member] Member rdsa:UnrealisedGainsLossesOnSecuritiesMember
1536 Unrealised Gains/ (Losses) on Securities [Member] Member rdsa:DebtInstrumentsRemeasurementsMember
1537 Cash Flow Hedging Gains/ (Losses) [Member] Member rdsa:CashFlowHedgingGainsLossesMember
1538 Retirement Benefits Remeasurements [Member] Member rdsa:RetirementBenefitsRemeasurementsMember
1539 Deferred Cost Of Hedging Member rdsa:DeferredCostOfHedgingMember
1540 Accumulated Other Comprehensive Income [Member] Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
1541 Equity Instrument Remeasurements Member rdsa:EquityInstrumentRemeasurementsMember
1542 Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] LineItems rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossLineItems
1543 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
1544 Impact of IFRS 9 implementation Concept (Monetary) As Of Debit rdsa:IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeArisingFromChangeInMeasurementAttributeFirstApplicationOfIFRS9
1545 At January 1, 2018 (as revised) Concept (Monetary) As Of Credit rdsa:AccumulatedOtherComprehensiveIncomeAsRevised
1546 Recognised in other comprehensive income Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeRecognised
1547 Reclassified to income Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeReclassifiedToIncome
1548 Reclassified to the balance sheet Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeReclassifiedToTheBalanceSheet
1549 Reclassified to retained earnings Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeReclassifiedToRetainedEarnings
1550 Tax on amounts recognised/reclassified Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeTaxOnAmountsRecognisedOrReclassified
1551 Total Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
1552 Share of other comprehensive (loss)/income of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
1553 Total Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
1554 Less: non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
1555 Attributable to Royal Dutch Shell plc shareholders Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeAttributableToOwnersOfParent
1556 Reclassification in respect of shares held in trust Concept (Monetary) For Period Credit rdsa:AccumulatedOtherComprehensiveIncomeReclassificationInRespectOfSharesHeldInTrust
1557 Ending balance Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
1558 101390 - Disclosure - Other Reserves - Summary of Accumulated Other Comprehensive Income Attributable to Royal Dutch Shell Plc Shareholders (Parenthetical) (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureOtherReservesSummaryOfAccumulatedOtherComprehensiveIncomeAttributableToRoyalDutchShellPlcShareholdersParentheticalDetail
1559 Implied Table Table

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*

 implied:Table
1560 Disclosure Of Accumulated Other Comprehensive Income Loss [Abstract] Abstract rdsa:DisclosureOfAccumulatedOtherComprehensiveIncomeLossAbstract
1561 Losses arising on net investment hedges Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax
1562 101400 - Disclosure - Dividends - Summary of Interim Dividends (Detail) Network

*

*

 http://www.shell.com/20181231/taxonomy/role/DisclosureDividendsSummaryOfInterimDividendsDetail
1563 Disclosure Of Dividends [Table] Table

*

*

 rdsa:DisclosureOfDividendsTable
1564 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
1565 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
1566 A Ordinary Shares [Member] Member rdsa:AOrdinarySharesMember
1567 B Ordinary Shares [Member] Member rdsa:BOrdinarySharesMember
1568 Disclosure Of Dividends [Line Items] LineItems rdsa:DisclosureOfDividendsLineItems
1569 Cash dividend Concept (Monetary) For Period Debit ifrs-full:DividendsPaidOrdinaryShares
1570 Scrip: none (2017: $1.88; 2016: $1.88 per share) Concept (Monetary) For Period Debit rdsa:ScripDividends
1571 Total – A shares Concept (Monetary) For Period Debit rdsa:InterimDividendsPaid
1572 101410 - Disclosure - Dividends - Summary of Interim Dividends (Parenthetical) (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureDividendsSummaryOfInterimDividendsParentheticalDetail
1573 Disclosure Of Dividends [Table] Table

*

*

 rdsa:DisclosureOfDividendsTable
1574 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
1575 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
1576 A Ordinary Shares [Member] Member rdsa:AOrdinarySharesMember
1577 B Ordinary Shares [Member] Member rdsa:BOrdinarySharesMember
1578 Disclosure Of Dividends [Line Items] LineItems rdsa:DisclosureOfDividendsLineItems
1579 Dividends paid per share Concept (Share) For Period ifrs-full:DividendsPaidOrdinarySharesPerShare
1580 Scrip dividend per share Concept (Share) For Period rdsa:ScripDividendPerShare
1581 101420 - Disclosure - Dividends - Additional Information (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureDividendsAdditionalInformationDetail
1582 Disclosure Of Dividends [Table] Table

*

*

 rdsa:DisclosureOfDividendsTable
1583 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
1584 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
1585 A Ordinary Shares [Member] Member rdsa:AOrdinarySharesMember
1586 B Ordinary Shares [Member] Member rdsa:BOrdinarySharesMember
1587 Disclosure Of Dividends [Line Items] LineItems rdsa:DisclosureOfDividendsLineItems
1588 Interim dividend, declared date Concept (Text/String) For Period rdsa:InterimDividendsDeclaredDate
1589 Dividend declared per share Concept (Share) For Period rdsa:DividendsDeclaredOrdinarySharesPerShare
1590 Dividend declared Concept (Monetary) For Period Debit rdsa:DividendsDeclaredOrdinaryShares
1591 Interim dividend, payable date Concept (Date) For Period rdsa:DividendsPayableDateToBePaidDayMonthAndYear
1592 Interim dividend, record date Concept (Date) For Period rdsa:DividendsPayableDateOfRecordDayMonthAndYear1
1593 101430 - Disclosure - Earnings Per Share - Schedule of Earnings Per Share (Detail) Network

*

*

 http://www.shell.com/20181231/taxonomy/role/DisclosureEarningsPerShareScheduleOfEarningsPerShareDetail
1594 Implied Table Table

*

*

 implied:Table
1595 Earnings Per Share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
1596 Income attributable to Royal Dutch Shell plc shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
1597 Weighted average number of shares used as the basis for determining: Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
1598 Basic earnings per share Concept (Shares) For Period ifrs-full:WeightedAverageShares
1599 Diluted earnings per share Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1600 101440 - Disclosure - Legal Proceedings and Other Contingencies - Additional Information (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureLegalProceedingsAndOtherContingenciesAdditionalInformationDetail
1601 Disclosure Of Legal Proceedings And Other Contingencies [Table] Table

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*

 rdsa:DisclosureOfLegalProceedingsAndOtherContingenciesTable
1602 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
1603 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
1604 Pesticide Litigation [Member] Member rdsa:PesticideLitigationMember
1605 Climate Change Litigation [Member] Member rdsa:ClimateChangeLitigationMember
1606 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1607 Counterparties [member] Member ifrs-full:CounterpartiesMember
1608 ENI SpA [Member] Member rdsa:ENISpAMember
1609 Malabu [Member] Member rdsa:MalabuMember
1610 Disclosure of legal proceedings and other contingencies [Line Items] LineItems rdsa:DisclosureOfLegalProceedingsAndOtherContingenciesLineItems
1611 Number of cases pending Concept (Integer) For Period rdsa:NumberOfCasesPending
1612 Financing liabilities Concept (Monetary) As Of Credit rdsa:FinancingLiabilities
1613 Number of subsidiaries Concept (Integer) For Period rdsa:NumberOfSubsidiaries
1614 Losses on litigation settlements in fraudulent and corrupt scheme Concept (Monetary) For Period Debit rdsa:LossesOnLitigationSettlementsInFraudulentAndCorruptScheme
1615 101450 - Disclosure - Employees - Summary of Employee Costs (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureEmployeesSummaryOfEmployeeCostsDetail
1616 Implied Table Table

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*

 implied:Table
1617 Classes Of Employee Benefits Expense [Abstract] Abstract ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
1618 Remuneration Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
1619 Social security contributions Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
1620 Retirement benefits (see Note 17) Concept (Monetary) For Period Debit rdsa:PostemploymentBenefitExpenseDefinedBenefitPlansAndDefinedContributionPlan
1621 Share-based compensation expense Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1622 Total Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1623 101460 - Disclosure - Employees - Summary of Employee Costs (Parenthetical) (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureEmployeesSummaryOfEmployeeCostsParentheticalDetail
1624 Implied Table Table

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*

 implied:Table
1625 Number And Average Number Of Employees [Abstract] Abstract ifrs-full:NumberAndAverageNumberOfEmployeesAbstract
1626 Employee seconded to joint ventures and associates, remuneration Concept (Monetary) For Period Debit rdsa:JointVenturesAndAssociatesEmployeesRelatedRemuneration
1627 Employee seconded to joint ventures and associates, social security contributions Concept (Monetary) For Period Debit rdsa:JointVenturesAndAssociatesEmployeesRelatedSocialSecurityContributions
1628 101470 - Disclosure - Employees - Summary of Average Employee Numbers (Detail) Network

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*

 http://www.shell.com/20181231/taxonomy/role/DisclosureEmployeesSummaryOfAverageEmployeeNumbersDetail
1629 Disclosure Of Average Number Of Employees [Table] Table

*

*

 rdsa:DisclosureOfAverageNumberOfEmployeesTable
1630 Segments [axis] Axis ifrs-full:SegmentsAxis
1631 Segments [member] Member ifrs-full:SegmentsMember
1632 Integrated Gas [Member] Member rdsa:IntegratedGasMember
1633 Upstream [Member] Member rdsa:UpstreamMember
1634 Downstream [Member] Member rdsa:DownstreamMember
1635 Corporate [Member] Member rdsa:Corporate1Member
1636 Disclosure of average number of employees [Line Items] LineItems rdsa:DisclosureOfAverageNumberOfEmployeesLineItems
1637 Average employee numbers Concept (Decimal) For Period ifrs-full:AverageNumberOfEmployees
1638 101480 - Disclosure - Employees - Summary of Average Employee Numbers (Parenthetical) (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureEmployeesSummaryOfAverageEmployeeNumbersParentheticalDetail
1639 Implied Table Table

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 implied:Table
1640 Number And Average Number Of Employees [Abstract] Abstract ifrs-full:NumberAndAverageNumberOfEmployeesAbstract
1641 Average employee numbers seconded to joint ventures and associates Concept (Decimal) For Period rdsa:AverageNumberOfEmployeesRelatedToJointVenturesAndAssociates
1642 101490 - Disclosure - Directors and Senior Management - Summary of Remuneration of Directors of the Company (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureDirectorsAndSeniorManagementSummaryOfRemunerationOfDirectorsOfCompanyDetail
1643 Disclosure Of Directors Remuneration [Table] Table

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*

 rdsa:DisclosureOfDirectorsRemunerationTable
1644 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1645 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1646 Directors [Member] Member rdsa:DirectorsMember
1647 Disclosure Of Directors Remuneration [Line Items] LineItems rdsa:DisclosureOfDirectorsRemunerationLineItems
1648 Emoluments Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1649 Value of released awards under long-term incentive plans Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
1650 Employer contributions to pension plans Concept (Monetary) For Period Credit ifrs-full:EmployerContributions
1651 101500 - Disclosure - Directors and Senior Management - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureDirectorsAndSeniorManagementAdditionalInformationDetail
1652 Disclosure Of Directors Remuneration [Table] Table

*

*

 rdsa:DisclosureOfDirectorsRemunerationTable
1653 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1654 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1655 Deferred Bonus Plan [Member] Member rdsa:DeferredBonusPlanMember
1656 Disclosure Of Directors Remuneration [Line Items] LineItems rdsa:DisclosureOfDirectorsRemunerationLineItems
1657 Number of directors Concept (Integer) For Period rdsa:NumberOfDirectors
1658 Percentage of annual bonuses delivered in cash and share-based compensation, Short-term benefits Concept (Percent) For Period rdsa:PercentageOfBonusesDeliveredInCashAndShareBasedCompensationShortTermBenefits
1659 Percentage of bonus delivered in terms of shares Concept (Percent) For Period rdsa:PercentageOfBonusDeliveredInTermsOfShares
1660 Holding period Concept (Text/String) For Period rdsa:HoldingPeriod
1661 101510 - Disclosure - Directors and Senior Management - Summary of Directors and Senior Management Expenses (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureDirectorsAndSeniorManagementSummaryOfDirectorsAndSeniorManagementExpensesDetail
1662 Disclosure Of Directors And Senior Management Expense [Table] Table

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*

 rdsa:DisclosureOfDirectorsAndSeniorManagementExpenseTable
1663 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1664 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1665 Directors and Senior Management [Member] Member rdsa:DirectorsAndSeniorManagementMember
1666 Disclosure Of Directors And Senior Management Expense [Line Items] LineItems rdsa:DisclosureOfDirectorsAndSeniorManagementExpenseLineItems
1667 Short-term benefits Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
1668 Retirement benefits Concept (Monetary) For Period Debit rdsa:RetirementBenefitsExpense
1669 Share-based compensation Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1670 Termination and related amounts Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
1671 Total Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1672 101520 - Disclosure - Auditor's Remuneration - Summary of Auditor's Remuneration (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureAuditorSRemunerationSummaryOfAuditorSRemunerationDetail
1673 Implied Table Table

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*

 implied:Table
1674 Auditors Remuneration [Abstract] Abstract ifrs-full:AuditorsRemunerationAbstract
1675 Fees in respect of the audit of the Consolidated and Parent Company Financial Statements, including audit of consolidation returns Concept (Monetary) For Period Debit rdsa:AuditorsRemunerationForAuditOfConsolidatedAndParentCompany
1676 Other audit fees, principally in respect of audits of accounts of subsidiaries Concept (Monetary) For Period Debit rdsa:AuditorsRemunerationForAuditOfGroupSubsidiaries
1677 Total audit fees Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
1678 Audit-related fees Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForOtherServices
1679 Fees in respect of other non-audit services Concept (Monetary) For Period Debit rdsa:AuditorsRemunerationForNonAuditServices
1680 Total Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
1681 101530 - Disclosure - Auditor's Remuneration - Additional Information (Detail) Network

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 http://www.shell.com/20181231/taxonomy/role/DisclosureAuditorSRemunerationAdditionalInformationDetail
1682 Disclosure Of Auditors Remuneration [Table] Table

*

*

 rdsa:DisclosureOfAuditorsRemunerationTable
1683 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1684 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1685 United States [Member] Member country:US
1686 Disclosure Of Auditors Remuneration [Line Items] LineItems rdsa:DisclosureOfAuditorsRemunerationLineItems
1687 Remuneration for audit services to retirement benefit plans for employees of subsidiaries Concept (Monetary) For Period Debit rdsa:AuditorsRemunerationForRetirementBenefitPlansForEmployeesOfSubsidiaries
1688 Auditor's remuneration Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
1689 Auditor's remuneration for audit services Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
1690 Auditor's remuneration for audit related Concept (Monetary) For Period Debit rdsa:AuditorsRemunerationForAuditRelated
1691 Auditor's remuneration for other services Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForOtherServices

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