LG Display Co., Ltd. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

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

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

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

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 http://www.lgdisplay.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
20 Implied Table Table

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21 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
22 Assets Abstract ifrs-full:AssetsAbstract
23 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
24 Deposits in banks Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsNotClassifiedAsCashEquivalents
25 Trade accounts and notes receivable, net Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
26 Other accounts receivable, net Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
27 Other current financial assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
28 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
29 Prepaid income taxes Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsCurrent
30 Non-current assets held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
31 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
32 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
33 Deposits in banks Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
34 Investments in equity accounted investees Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
35 Other non-current accounts receivable, net Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentReceivables
36 Other non-current financial assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
37 Property, plant and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
38 Intangible assets, net Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
39 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
40 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
41 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
42 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
43 Liabilities Abstract ifrs-full:LiabilitiesAbstract
44 Trade accounts and notes payable Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
45 Current financial liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilities
46 Other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
47 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsCurrent
48 Income tax payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
49 Provisions Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
50 Advances received Concept (Monetary) As Of Credit ifrs-full:CurrentAdvances
51 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
52 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
53 Non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinancialLiabilities
54 Non-current provisions Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
55 Defined benefit liabilities, net Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
56 Long-term advances received Concept (Monetary) As Of Credit ifrs-full:NoncurrentAdvances
57 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
58 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
59 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
60 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
61 Equity Abstract ifrs-full:EquityAbstract
62 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
63 Share premium Concept (Monetary) As Of Credit ifrs-full:SharePremium
64 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
65 Reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
66 Total equity attributable to equity holders of the Controlling Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
67 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
68 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
69 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
70 1004 - Statement - Consolidated Statements of Comprehensive Income (Loss) Network

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 http://www.lgdisplay.com/taxonomy/role/StatementOfComprehensiveIncomeOCIComponentsPresentedNetOfTax-410000
71 Implied Table Table

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72 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
73 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
74 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
75 Gross profit Concept (Monetary) For Period Credit ifrs-full:GrossProfit
76 Selling expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
77 Administrative expenses Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
78 Research and development expenses Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
79 Other income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
80 Other expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByFunction
81 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
82 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
83 Equity in income of equity accounted investees, net Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
84 Profit (loss) before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
85 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
86 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
87 Other comprehensive income (loss) Items that will never be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
88 Remeasurements of net defined benefit liabilities Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
89 Other comprehensive income (loss) from associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossBeforeTax
90 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
91 Items that will never be reclassified to profit or loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
92 Other comprehensive income (loss), Items that are or may be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
93 Net change in fair value of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
94 Foreign currency translation differences for foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
95 Other comprehensive income (loss) from associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
96 Related income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
97 Items that are or may be reclassified to profit or loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
98 Other comprehensive income (loss) for the year, net of income tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
99 Total comprehensive income (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
100 Profit (loss) attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
101 Owners of the Controlling Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
102 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
103 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
104 Total comprehensive income (loss) attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
105 Owners of the Controlling Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
106 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
107 Total comprehensive income (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
108 Earnings (loss) per share (In won) Abstract ifrs-full:EarningsPerShareAbstract
109 Basic earnings (loss) per share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
110 Diluted earnings (loss) per share Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
111 1005 - Statement - Consolidated Statements of Changes in Equity Network

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

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 ifrs-full:StatementOfChangesInEquityTable
113 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
114 Equity [member] Member ifrs-full:EquityMember
115 Share capital [Member] Member ifrs-full:IssuedCapitalMember
116 Share premium [member] Member ifrs-full:SharePremiumMember
117 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
118 Reserves [Member] Member ifrs-full:OtherReservesMember
119 Attributable to owners of the Controlling Company [Member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
120 Non-controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
121 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
122 Beginning Balance Concept (Monetary) As Of Credit ifrs-full:Equity
123 Total comprehensive income (loss) for the year Abstract ifrs-full:ComprehensiveIncomeAbstract
124 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
125 Other comprehensive income (loss) Abstract ifrs-full:OtherComprehensiveIncomeAbstract
126 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
127 Total comprehensive income (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
128 Dividends to equity holders Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
129 Subsidiaries' dividends distributed to non-controlling interests Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
130 Capital contribution from non-controlling interests Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInEquityOfSubsidiaries
131 Ending Balance Concept (Monetary) As Of Credit ifrs-full:Equity
132 1006 - Statement - Consolidated Statements of Cash Flows Network

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 http://www.lgdisplay.com/taxonomy/role/StatementOfCashFlowsIndirectMethod-520000
133 Implied Table Table

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134 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
135 Cash flows from operating activities: Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
136 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
137 Adjustments for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
138 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
139 Depreciation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationExpense
140 Amortization of intangible assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForAmortisationExpense
141 Gain on foreign currency translation Concept (Monetary) For Period Credit lpl:AdjustmentsForGainOnForeignCurrencyTranslation
142 Loss on foreign currency translation Concept (Monetary) For Period Debit lpl:AdjustmentsForLossOnForeignCurrencyTranslation
143 Expenses related to defined benefit plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
144 Gain on disposal of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
145 Loss on disposal of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:LossesOnDisposalsOfPropertyPlantAndEquipment
146 Impairment loss on property, plant and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
147 Impairment loss on inventories Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
148 (Reversal of) bad debt expense Concept (Monetary) For Period Credit lpl:AdjustmentsForBadDebtExpenseOrReversal
149 Gain on disposal of intangible assets Concept (Monetary) For Period Credit lpl:GainOnDisposalOfIntangibleAssets
150 Loss on disposal of intangible assets Concept (Monetary) For Period Debit lpl:LossOnDisposalOfIntangibleAssets
151 Impairment loss on intangible assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
152 Reversal of impairment loss on intangible assets Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
153 Warranty expenses Concept (Monetary) For Period Debit lpl:ProductWarrantyExpenses
154 Finance income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncome
155 Finance costs Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFinanceCosts
156 Equity in income of equity method accounted investees, net Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
157 Other income Concept (Monetary) For Period Credit lpl:AdjustmentsForOtherIncome
158 Other expenses Concept (Monetary) For Period Debit lpl:AdjustmentsForOtherExpenses
159 Adjustments for reconcile of profit and loss Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForReconcileProfitLoss
160 Changes in Trade accounts and notes receivable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
161 Other accounts receivable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables
162 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
163 Other current assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets
164 Other non-current assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
165 Trade accounts and notes payable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
166 Other accounts payable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherOperatingPayables
167 Accrued expenses Concept (Monetary) For Period Debit lpl:AdjustmentsForIncreaseDecreaseInAccruedExpenses
168 Provisions Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
169 Other current liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherCurrentLiabilities
170 Defined benefit liabilities, net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
171 Long-term advances received Concept (Monetary) For Period Debit lpl:AdjustmentsForDecreaseIncreaseInLongTermAdvanceReceived
172 Other non-current liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
173 Cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
174 Income taxes paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
175 Interests received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
176 Interests paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
177 Net cash provided by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
178 Cash flows from investing activities: Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
179 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsInvestingActivities
180 Proceeds from withdrawal of deposits in banks Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities
181 Increase in deposits in banks Concept (Monetary) For Period Credit ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities
182 Acquisition of financial assets at fair value through profit or loss Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInDecreaseIncreaseInShorttermDepositsAndInvestments
183 Proceeds from disposal of financial assets at fair value through other comprehensive income Concept (Monetary) For Period Debit lpl:ProceedsFromSalesOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
184 Acquisition of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfAvailableforsaleFinancialAssets
185 Proceeds from disposal of available-for-sale financial assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalOrMaturityOfAvailableforsaleFinancialAssets
186 Acquisition of investments in equity accounted investees Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
187 Proceeds from disposal of investments in equity accounted investees Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
188 Acquisition of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
189 Proceeds from disposal of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
190 Acquisition of intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
191 Proceeds from disposal of intangible assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities
192 Government grants received Concept (Monetary) For Period Debit ifrs-full:ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities
193 Receipt from settlement of derivatives Concept (Monetary) For Period Debit lpl:ProceedsFromPaymentsForSettlementOfDerivativeAssetsAndLiabilities
194 Increase in short-term loans Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
195 Proceeds from collection of short-term loans Concept (Monetary) For Period Debit ifrs-full:CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
196 Increase in long-term loans Concept (Monetary) For Period Credit ifrs-full:PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities
197 Decrease in deposits Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
198 Increase in deposits Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
199 Proceeds from disposal of emission rights Concept (Monetary) For Period Debit lpl:ProceedsFromDisposalOfEmissionRight
200 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
201 Cash flows from financing activities: Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
202 Proceeds from short-term borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromCurrentBorrowings
203 Repayments of short-term borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
204 Proceeds from issuance of bonds Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
205 Proceeds from long-term borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
206 Repayments of long-term borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
207 Repayments of current portion of long-term borrowings and bonds Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
208 Capital contribution from non-controlling interests Concept (Monetary) For Period Debit ifrs-full:ProceedsFromContributionsOfNoncontrollingInterests
209 Subsidiaries' dividends distributed to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
210 Dividends paid Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
211 Net cash provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
212 Net increase (decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
213 Beginning Balance Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
214 Effect of exchange rate fluctuations on cash held Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
215 Ending Balance Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
216 1007 - Disclosure - Reporting Entity Network

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 http://www.lgdisplay.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
217 Implied Table Table

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220 1008 - Disclosure - Basis of Presenting Financial Statements Network

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221 Implied Table Table

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224 1009 - Disclosure - Summary of Significant Accounting Policies Network

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228 1010 - Disclosure - Cash and Cash Equivalents and Deposits in Banks Network

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232 1011 - Disclosure - Receivables and Other Assets Network

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236 1012 - Disclosure - Other Financial Assets Network

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240 1013 - Disclosure - Inventories Network

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244 1014 - Disclosure - Investments in Equity Accounted Investees Network

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248 1015 - Disclosure - Property, Plant and Equipment Network

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252 1016 - Disclosure - Intangible Assets Network

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256 1017 - Disclosure - Financial Liabilities Network

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260 1018 - Disclosure - Employee Benefits Network

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264 1019 - Disclosure - Provisions Network

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265 Implied Table Table

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266 Text block [abstract] Abstract lpl:TextBlockAbstract
267 Provisions Concept (Text Block (HTML)) For Period lpl:DisclosureOfProvisionsAndOtherLiabilitiesExplanatory
268 1020 - Disclosure - Other Liabilities Network

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269 Implied Table Table

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270 Text block [abstract] Abstract lpl:TextBlockAbstract
271 Other Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherLiabilitiesExplanatory
272 1021 - Disclosure - Contingent Liabilities and Commitments Network

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273 Implied Table Table

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274 Text block [abstract] Abstract lpl:TextBlockAbstract
275 Contingent Liabilities and Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
276 1022 - Disclosure - Capital and Reserves Network

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277 Implied Table Table

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278 Text block [abstract] Abstract lpl:TextBlockAbstract
279 Capital and Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
280 1023 - Disclosure - Geographic and Other Information Network

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281 Implied Table Table

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282 Text block [abstract] Abstract lpl:TextBlockAbstract
283 Geographic and Other Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
284 1024 - Disclosure - The Nature of Expenses and Others Network

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285 Implied Table Table

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286 Text block [abstract] Abstract lpl:TextBlockAbstract
287 The Nature of Expenses and Others Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExpensesByNatureExplanatory
288 1025 - Disclosure - Selling and Administrative Expenses Network

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289 Implied Table Table

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290 Text block [abstract] Abstract lpl:TextBlockAbstract
291 Selling and Administrative Expenses Concept (Text Block (HTML)) For Period lpl:DisclosureOfSellingGeneralAndAdministrativeExpensesExplanatory
292 1026 - Disclosure - Personnel Expenses Network

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293 Implied Table Table

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294 Text block [abstract] Abstract lpl:TextBlockAbstract
295 Personnel Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
296 1027 - Disclosure - Other Income and Other Expenses Network

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297 Implied Table Table

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298 Text block [abstract] Abstract lpl:TextBlockAbstract
299 Other Income and Other Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
300 1028 - Disclosure - Finance Income and Finance Costs Network

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301 Implied Table Table

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302 Text block [abstract] Abstract lpl:TextBlockAbstract
303 Finance Income and Finance Costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
304 1029 - Disclosure - Income Taxes Network

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305 Implied Table Table

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306 Text block [abstract] Abstract lpl:TextBlockAbstract
307 Income Taxes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
308 1030 - Disclosure - Deferred Tax Assets and Liabilities Network

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309 Implied Table Table

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310 Text block [abstract] Abstract lpl:TextBlockAbstract
311 Deferred Tax Assets and Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
312 1031 - Disclosure - Earnings (Loss) Per Share Attributable to Owners of the Controlling Company Network

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313 Implied Table Table

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314 Text block [abstract] Abstract lpl:TextBlockAbstract
315 Earnings (Loss) Per Share Attributable to Owners of the Controlling Company Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
316 1032 - Disclosure - Financial Risk Management Network

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317 Implied Table Table

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318 Text block [abstract] Abstract lpl:TextBlockAbstract
319 Financial Risk Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
320 1033 - Disclosure - Changes in liabilities arising from financing activities Network

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321 Implied Table Table

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322 Text block [abstract] Abstract lpl:TextBlockAbstract
323 Changes in liabilities arising from financing activities Concept (Text Block (HTML)) For Period lpl:DisclosureOfChangesInLiabilitiesArisingFromFinancingActivitiesExplanatory
324 1034 - Disclosure - Related Parties and Others Network

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325 Implied Table Table

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326 Text block [abstract] Abstract lpl:TextBlockAbstract
327 Related Parties and Others Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
328 1035 - Disclosure - Supplemental Cash Flow Information Network

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329 Implied Table Table

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330 Text block [abstract] Abstract lpl:TextBlockAbstract
331 Supplemental Cash Flow Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
332 1036 - Disclosure - Non-current Assets Held for Sale Network

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333 Implied Table Table

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334 Text block [abstract] Abstract lpl:TextBlockAbstract
335 Non-current Assets Held for Sale Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
336 1037 - Disclosure - Summary of Significant Accounting Policies (Policies) Network

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337 Implied Table Table

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338 Text block [abstract] Abstract lpl:TextBlockAbstract
339 Change in Accounting Policies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
340 Consolidation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfConsolidationExplanatory
341 Foreign Currency Transaction and Translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
342 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
343 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
344 Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
345 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
346 Borrowing Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
347 Government Grants Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGovernmentGrants
348 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory
349 Impairment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory
350 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
351 Non-current Assets Held for Sale Concept (Text Block (HTML)) For Period lpl:DescriptionOfAccountingPolicyForNoncurrentAssetsHeldForSaleExplanatory
352 Employee Benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
353 Revenue from contracts with customers Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
354 Operating Segments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
355 Finance Income and Finance Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinanceIncomeAndCostsExplanatory
356 Income Tax Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
357 Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
358 New Standards and Amendments Not Yet Adopted Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
359 1038 - Disclosure - Reporting Entity (Tables) Network

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360 Implied Table Table

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361 Text block [abstract] Abstract lpl:TextBlockAbstract
362 Summary of Consolidated Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
363 1039 - Disclosure - Summary of Significant Accounting Policies (Tables) Network

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364 Implied Table Table

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365 Text block [abstract] Abstract lpl:TextBlockAbstract
366 Schedule of Changes in Each Class of Financial Assets from Original Measurement Categories under IAS39 to Measurement Categories under IFRS 9 Concept (Text Block (HTML)) For Period lpl:DisclosureOfOriginalMeasurementCategoriesUnderIAS39AndChangesInMeasurementCategoriesUnderIFRS9ForEachClassOfGroupFinancialAssetsExplanatory
367 Schedule of Effect on Application of IFRS 15 on Group's Consolidated Statement of Financial Position Concept (Text Block (HTML)) For Period lpl:DisclosureOfEffectOnApplicationOfIFRS15OnGroupsConsolidatedStatementOfFinancialPositionExplanatory
368 Estimated Useful Lives of Property, Plant and Equipment Concept (Text Block (HTML)) For Period lpl:DisclosureOfPropertyPlantAndEquipmentEstimatedUsefulLifeExplanatory
369 Schedule of Impact on Depreciation Expense of Property Plant and Equipment and Newly Acquired Property Plant and Equipment Concept (Text Block (HTML)) For Period lpl:DisclosureOfImpactOnDepreciationExpenseOfPropertyPlantAndEquipmentAndNewlyAcquiredPropertyPlantAndEquipmentExplanatory
370 Estimated Useful Lives of Intangible Assets, Other Than Goodwill Concept (Text Block (HTML)) For Period lpl:DisclosureOfIntangibleAssetEstimatedUsefulLifeExplanatory
371 1040 - Disclosure - Cash and Cash Equivalents and Deposits in Banks (Tables) Network

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372 Implied Table Table

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373 Text block [abstract] Abstract lpl:TextBlockAbstract
374 Summary of Cash and Cash Equivalents and Deposits in Banks Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutCashAndBankBalancesAndDepositsInBanksExplanatory
375 1041 - Disclosure - Receivables and Other Assets (Tables) Network

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376 Implied Table Table

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377 Text block [abstract] Abstract lpl:TextBlockAbstract
378 Summary of Trade Accounts and Notes Receivable Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatory
379 Summary of Other Accounts Receivable Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutOtherAccountsReceivableExplanatory
380 Aging of Trade Accounts and Notes Receivable, Other Accounts Receivable and Long-term Non-trade Receivable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedExplanatory
381 Movement in Allowance for Impairment in Respect of Trade Accounts and Notes Receivable, Other Accounts Receivable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory
382 Summary of Other Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherAssetsExplanatory
383 1042 - Disclosure - Other Financial Assets (Tables) Network

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384 Implied Table Table

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385 Text block [abstract] Abstract lpl:TextBlockAbstract
386 Summary of Other Financial Assets Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutOtherFinancialAssetsExplanatory
387 1043 - Disclosure - Inventories (Tables) Network

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388 Implied Table Table

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389 Text block [abstract] Abstract lpl:TextBlockAbstract
390 Summary of Inventories Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutInventoriesExplanatory
391 Inventories Recognized as Cost of Sales and Inventory Write-downs Included in Cost of Sales Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCostOfSalesExplanatory
392 1044 - Disclosure - Investments in Equity Accounted Investees (Tables) Network

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393 Statement [table] Table

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 lpl:StatementTable
394 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
395 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
396 Other joint venture and associates, in aggregate [member] Member lpl:JointVenturesAndAssociatesMember
397 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
398 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
399 Suzhou Raken Technology Co., Ltd. [member] Member lpl:SuzhouRakenTechnologyCoLtdMember
400 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
401 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
402 Paju Electric Glass Co., Ltd. [member] Member lpl:PajuElectricGlassCoLtdMember
403 Statement [LineItems] LineItems lpl:StatementLineItems
404 Summary of Consolidated Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
405 Summary of Financial Information of Significant Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory
406 Reconciliation from Financial Information of Significant Associate to its Carrying Value in Consolidated Financial Statements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory
407 Changes in Investments in Associates and a Joint Venture Accounted for Using Equity Method Concept (Text Block (HTML)) For Period lpl:DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociatesAndJointVentureAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateAndJointVentureExplanatory
408 1045 - Disclosure - Property, Plant and Equipment (Tables) Network

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409 Implied Table Table

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410 Text block [abstract] Abstract lpl:TextBlockAbstract
411 Changes in Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
412 Capitalized Borrowing Costs and Capitalization Rate Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingCostsExplanatory
413 1046 - Disclosure - Intangible Assets (Tables) Network

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414 Implied Table Table

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415 Text block [abstract] Abstract lpl:TextBlockAbstract
416 Changes in Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
417 Summary of Development Costs Concept (Text Block (HTML)) For Period lpl:DisclosureOfDevelopmentCostsOfIntangibleAssetsExplanatory
418 1047 - Disclosure - Financial Liabilities (Tables) Network

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419 Statement [table] Table

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420 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
421 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
422 Bonds issued and outstanding [member] Member lpl:BondIssuedMember
423 Long-term borrowings [Member] Member lpl:LongTermDebt1Member
424 Statement [LineItems] LineItems lpl:StatementLineItems
425 Summary of Financial Liabilities Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutWarrantLiabilityExplanatory
426 Summary of Debt Instrument Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
427 1048 - Disclosure - Employee Benefits (Tables) Network

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428 Statement [table] Table

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429 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
430 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
431 Defined benefit obligations [member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
432 Fair value of plan assets [member] Member ifrs-full:PlanAssetsMember
433 Statement [LineItems] LineItems lpl:StatementLineItems
434 Net Defined Benefit Liabilities, Changes in Present Value of Defined Benefit Obligations and Changes in Fair Value of Plan Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
435 Details of Plan Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
436 Expenses Recognized in Profit or Loss and Line Items Included in Consolidated Statements of Comprehensive Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatory
437 Remeasurements of Net Defined Benefit Liabilities (Assets) Included in Other Comprehensive Income (Loss) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
438 Principal Actuarial Assumptions Concept (Text Block (HTML)) For Period lpl:DisclosureOfActuarialAssumptionsForDefinedBenefitObligationsExplanatory
439 Amounts of Defined Benefit Obligations Affected by Reasonably Possible Changes to Respective Relevant Actuarial Assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
440 1049 - Disclosure - Provisions (Tables) Network

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441 Implied Table Table

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442 Text block [abstract] Abstract lpl:TextBlockAbstract
443 Changes in Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
444 1050 - Disclosure - Other Liabilities (Tables) Network

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445 Implied Table Table

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446 Text block [abstract] Abstract lpl:TextBlockAbstract
447 Summary of Other Liabilities Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutOtherLiabilitiesExplanatory
448 1051 - Disclosure - Contingent Liabilities and Commitments (Tables) Network

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449 Implied Table Table

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450 Text block [abstract] Abstract lpl:TextBlockAbstract
451 Maximum Amount of Accounts Receivables Sales and Amount of Sold Accounts Receivables before Maturity by Contract Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfContinuingInvolvementInDerecognisedFinancialAssetsExplanatory
452 1052 - Disclosure - Capital and Reserves (Tables) Network

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453 Implied Table Table

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454 Text block [abstract] Abstract lpl:TextBlockAbstract
455 Summary of Reserves at Reporting Date Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
456 Change in Reserves Concept (Text Block (HTML)) For Period lpl:DisclosureOfChangesInReservesExplanatory
457 1053 - Disclosure - Geographic and Other Information (Tables) Network

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458 Implied Table Table

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459 Text block [abstract] Abstract lpl:TextBlockAbstract
460 Revenue and Non-current Assets by Geography Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
461 Revenue by Product and Services Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProductsAndServicesExplanatory
462 1054 - Disclosure - The Nature of Expenses and Others (Tables) Network

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463 Implied Table Table

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464 Text block [abstract] Abstract lpl:TextBlockAbstract
465 Classification of Expenses by Nature Concept (Text Block (HTML)) For Period lpl:DisclosureOfNatureOfExpensesAndOthersExplanatory
466 1055 - Disclosure - Selling and Administrative Expenses (Tables) Network

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467 Implied Table Table

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468 Text block [abstract] Abstract lpl:TextBlockAbstract
469 Details of Selling and Administrative Expenses Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutSellingGeneralAndAdministrativeExpensesExplanatory
470 1056 - Disclosure - Personnel Expenses (Tables) Network

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471 Implied Table Table

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472 Text block [abstract] Abstract lpl:TextBlockAbstract
473 Details of Personnel Expenses Concept (Text Block (HTML)) For Period lpl:DisclosureOfSummaryOfPersonnelExpensesExplanatory
474 1057 - Disclosure - Other Income and Other Expenses (Tables) Network

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475 Implied Table Table

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476 Text block [abstract] Abstract lpl:TextBlockAbstract
477 Summary of Other Income Concept (Text Block (HTML)) For Period lpl:DisclosureOfOtherNonOperatingIncomeExplanatory
478 Summary of Other Expenses Concept (Text Block (HTML)) For Period lpl:DisclosureOfOtherNonOperatingExpenseExplanatory
479 1058 - Disclosure - Finance Income and Finance Costs (Tables) Network

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480 Implied Table Table

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481 Text block [abstract] Abstract lpl:TextBlockAbstract
482 Finance Income and Costs Recognized in Profit or Loss Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutFinanceCostAndIncomeRecognizedInProfitOrLossExplanatory
483 Finance Income and Costs Recognized in Other Comprehensive Income or Loss Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationAboutFinanceCostAndIncomeRecognizedInOtherComprehensiveIncomeLossExplanatory
484 1059 - Disclosure - Income Taxes (Tables) Network

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485 Implied Table Table

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486 Text block [abstract] Abstract lpl:TextBlockAbstract
487 Details of Income Tax Expense (Benefit) Concept (Text Block (HTML)) For Period lpl:DisclosureOfIncomeTaxExpenseBenefitExplanatory
488 Income Taxes Recognized Directly in Other Comprehensive Income Concept (Text Block (HTML)) For Period lpl:DisclosureOfIncomeTaxesRecognizedInOtherComprehensiveIncomeExplanatory
489 Reconciliation of Actual Effective Tax Rate Concept (Text Block (HTML)) For Period lpl:DisclosureOfEffectiveIncomeTaxRateReconciliationExplanatory
490 1060 - Disclosure - Deferred Tax Assets and Liabilities (Tables) Network

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491 Implied Table Table

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492 Text block [abstract] Abstract lpl:TextBlockAbstract
493 Summary Of Unused Tax Credit Carryforwards Concept (Text Block (HTML)) For Period lpl:DisclosureOfUnusedTaxCreditCarryforwardsNotRecognizedAsDeferredTaxAssetsExplanatory
494 Details of Deferred Tax Assets and Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
495 Changes in Deferred Tax Assets and Liabilities Concept (Text Block (HTML)) For Period lpl:DisclosureOfChangesInNetDeferredTaxAssetsAndLiabilitiesExplanatory
496 1061 - Disclosure - Earnings (Loss) Per Share Attributable to Owners of the Controlling Company (Tables) Network

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497 Implied Table Table

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498 Text block [abstract] Abstract lpl:TextBlockAbstract
499 Summary of Basic Earnings per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
500 1062 - Disclosure - Financial Risk Management (Tables) Network

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501 Statement [table] Table

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502 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
503 Risks [member] Member ifrs-full:TypesOfRisksMember
504 Currency risk [member] Member ifrs-full:CurrencyRiskMember
505 Interest rate risk [Member] Member ifrs-full:InterestRateRiskMember
506 Statement [LineItems] LineItems lpl:StatementLineItems
507 Exposure to Market Risks Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMarketRiskExplanatory
508 Average Exchange Rates Applied during Reporting Periods Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory
509 Sensitivity Analysis for Each Type of Market Risk Concept (Text Block (HTML)) For Period ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
510 Maximum Exposure to Credit Risk of Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExposureExplanatory
511 Contractual Maturities of Financial Liabilities, Including Estimated Interest Payments Concept (Text Block (HTML)) For Period lpl:DisclosureOfMaturityAnalysisForFinancialLiabilitiesExplanatory
512 Summary of Capital Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
513 Fair Values of Financial Assets and Liabilities, Together with Carrying Amounts Shown in Consolidated Statement of Financial Position Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfFinancialAssetsAndFinancialLiabilitiesAndReclassificationExplanatory
514 Fair Value Hierarchy Classifications of Financial Instruments Measured at Fair Value Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory
515 Fair Value Hierarchy Classifications, Valuation Technique and Inputs for Fair Value Measurements of Financial Instruments not Measured at Fair Value Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfLiabilitiesExplanatory
516 1063 - Disclosure - Changes in liabilities arising from financing activities (Tables) Network

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517 Implied Table Table

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518 Text block [abstract] Abstract lpl:TextBlockAbstract
519 Changes in liabilities arising from financing activities Concept (Text Block (HTML)) For Period lpl:DisclosureOfReconciliationOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesExplanatory
520 1064 - Disclosure - Related Parties and Others (Tables) Network

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521 Implied Table Table

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522 Text block [abstract] Abstract lpl:TextBlockAbstract
523 Significant Transactions, Trade Accounts and Notes Receivable and Payable Occurred in Normal Course of Business with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
524 Details of Significant Cash Transactions of Loans and Collection of Loans Occurred in Normal Course of Business with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory
525 Compensation Costs of Key Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
526 1065 - Disclosure - Supplemental Cash Flow Information (Tables) Network

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527 Implied Table Table

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528 Text block [abstract] Abstract lpl:TextBlockAbstract
529 Summary of Non-cash Investing and Financing Activities Concept (Text Block (HTML)) For Period lpl:DisclosureOfDetailedInformationOfSupplementaryCashFlowInformationExplanatory
530 1066 - Disclosure - Non-current Assets Held for Sale (Tables) Network

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531 Implied Table Table

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532 Text block [abstract] Abstract lpl:TextBlockAbstract
533 Schedule of Non-current Assets as Held for Sale Concept (Text Block (HTML)) For Period lpl:DisclosureOfNoncurrentAssetsHeldForSaleExplanatory
534 1067 - Disclosure - Reporting Entity - Additional Information (Detail) Network

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535 Disclosure of reporting entity [table] Table

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536 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
537 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
538 Entity that has significant influence over the controlling company [member] Member ifrs-full:JointControlOrSignificantInfluenceMember
539 Legal entity [Axis] Axis dei:LegalEntityAxis
540 Entity [Domain] Member dei:EntityDomain
541 LG Electronics Inc. [member] Member lpl:LGElectronicsIncMember
542 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
543 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
544 Consolidated subsidiaries [member] Member ifrs-full:SubsidiariesMember
545 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
546 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
547 Common stock [member] Member ifrs-full:OrdinarySharesMember
548 American depository shares (one represents one-half of one share of common stock) [member] Member lpl:AmericanDepositorySharesMember
549 Disclosure of reporting entity [line items] LineItems lpl:DisclosureOfReportingEntityLineItems
550 Percentage of Controlling Company's equity interests held by a major shareholder Concept (Percent) For Period lpl:PercentageOfEquityInterestHeldByAnotherParty
551 Common stock shares of Controlling Company held by a major shareholder Concept (Shares) As Of lpl:NumberOfSharesHeldByShareholders
552 Common stock outstanding Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
553 Distributed dividends from consolidated subsidiaries Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
554 1068 - Disclosure - Reporting Entity - Summary of Consolidated Subsidiaries (Detail) Network

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555 Disclosure of subsidiaries [table] Table

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 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
556 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
557 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
558 LG Display America, Inc. [member] Member lpl:LGDisplayAmericaIncMember
559 LG Display Japan Co., Ltd. [member] Member lpl:LGDisplayJapanCoLtdMember
560 LG Display Germany GmbH [member] Member lpl:LGDisplayGermanyGmbHMember
561 LG Display Taiwan Co., Ltd. [member] Member lpl:LGDisplayTaiwanCoLtdMember
562 LG Display Nanjing Co., Ltd. [member] Member lpl:LGDisplayNanjingCoLtdMember
563 LG Display Shanghai Co., Ltd. [member] Member lpl:LGDisplayShanghaiCoLtdMember
564 LG Display Poland Sp. z o.o. [member] Member lpl:LGDisplayPolandSpzooMember
565 LG Display Guangzhou Co., Ltd. [member] Member lpl:LGDisplayGuangzhouCoLtdMember
566 LG Display Shenzhen Co., Ltd. [member] Member lpl:LGDisplayShenzhenCoLtdMember
567 LG Display Singapore Pte. Ltd. [member] Member lpl:LGDisplaySingaporePteLtdMember
568 L&T Display Technology (Fujian) Limited [member] Member lpl:LandTDisplayTechnologyFujianLimitedMember
569 LG Display Yantai Co., Ltd. [member] Member lpl:LGDisplayYantaiCoLtdMember
570 Nanumnuri Co., Ltd. [member] Member lpl:NanumnuriCoLtdMember
571 LG Display (China) Co., Ltd. [member] Member lpl:LGDisplayChinaCoLtdMember
572 Unified Innovative Technology, LLC [member] Member lpl:UnifiedInnovativeTechnologyLLCMember
573 LG Display Guangzhou Trading Co., Ltd. [member] Member lpl:LGDisplayGuangzhouTradingCoLtdMember
574 Global OLED Technology, LLC [member] Member lpl:GlobalOLEDTechnologyLLCMember
575 LG Display Vietnam Haiphong Co., Ltd. [member] Member lpl:LGDisplayVietnamHaiphongCoLtdMember
576 Suzhou Lehui Display Co., Ltd. [member] Member lpl:SuzhouLehuiDisplayCoLtdMember
577 LG DISPLAY FUND I LLC [member] Member lpl:LGDisplayFundILLCMember
578 LG Display High-Tech (China) Co., Ltd. [member] Member lpl:LGDisplayHighTechChinaCoLtdMember
579 Money market trust [member] Member lpl:MoneyMarketTrustMember
580 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
581 Location Concept (Text/String) For Period ifrs-full:PrincipalPlaceOfBusinessOfSubsidiary
582 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
583 Fiscal year end Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
584 Date of incorporation Concept (Date) For Period dei:EntityIncorporationDateOfIncorporation
585 Business Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
586 Capital stocks Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
587 1069 - Disclosure - Reporting Entity - Summary of Consolidated Subsidiaries (Parenthetical) (Detail) Network

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588 Disclosure of subsidiaries [table] Table

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589 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
590 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
591 LG Display Vietnam Haiphong Co., Ltd. [member] Member lpl:LGDisplayVietnamHaiphongCoLtdMember
592 LG DISPLAY FUND I LLC [member] Member lpl:LGDisplayFundILLCMember
593 LG Display High-Tech (China) Co., Ltd. [member] Member lpl:LGDisplayHighTechChinaCoLtdMember
594 Money market trust [member] Member lpl:MoneyMarketTrustMember
595 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
596 Cash contribution for capital increase in consolidated subsidiaries Concept (Monetary) For Period Credit ifrs-full:PaymentsFromChangesInOwnershipInterestsInSubsidiaries
597 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
598 Acquired value Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAcquisitionOfSubsidiary
599 1070 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Network

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600 Disclosure of detailed information about financial instruments [table] Table

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601 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
602 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
603 Mask and Mold [member] Member lpl:MaskAndMoldMember
604 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
605 Currently stated [member] Member ifrs-full:RestatedMember
606 Initial Adoption of IFRS 9 [member] Member lpl:InitialAdoptionOfIFRS9Member
607 Initially applied IFRSs [axis] Axis ifrs-full:InitiallyAppliedIFRSsAxis
608 Initially applied IFRSs [member] Member ifrs-full:InitiallyAppliedIFRSsMember
609 Impact of IFRS 16 Leases [member] Member lpl:ImpactOfIFRS16LeasesMember
610 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
611 Equity [member] Member ifrs-full:EquityMember
612 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
613 Disclosure of detailed information about financial instruments [Line Items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
614 Impact on opening balance of retained earnings Concept (Monetary) For Period ifrs-full:IncreaseDecreaseInAccountingEstimate
615 Financial liabilities measured at FVTPL Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
616 Estimated useful lives of the assets Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
617 Reclassified inventories to property plant and equipment Concept (Monetary) For Period Debit lpl:ReclassificationsOfInventoriesToPropertyPlantAndEquipment
618 Impact of consolidated financial statements after adoption of IFRS 16 Concept (Percent) For Period lpl:ImpactOfConsolidatedFinancialStatementsAfterAdoptionOfIfrs16
619 1071 - Disclosure - Summary of Significant Accounting Policies - Schedule of Changes in Each Class of Financial Assets from Original Measurement Categories under IAS39 to Measurement Categories under IFRS 9 (Detail) Network

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620 Disclosure of detailed information about financial instruments [table] Table

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621 Events of reclassification of financial assets [axis] Axis ifrs-full:EventsOfReclassificationOfFinancialAssetsAxis
622 Events of reclassification of financial assets [member] Member ifrs-full:EventsOfReclassificationOfFinancialAssetsMember
623 IFRS9 [member] Member lpl:IFRS9Member
624 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
625 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
626 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
627 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
628 Mandatorily at FVTPL [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValueCategoryMember
629 Loans and receivables, category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
630 Available-for-sale financial assets [member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
631 Designated as at FVTPL [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
632 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
633 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
634 IAS 39 [member] Member lpl:IAS39Member
635 Disclosure of detailed information about financial instruments [Line Items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
636 Financial assets Abstract ifrs-full:CategoriesOfFinancialAssetsAbstract
637 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
638 Debt instrument Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
639 Deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsNotClassifiedAsCashEquivalents
640 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
641 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
642 Others Concept (Monetary) As Of Debit ifrs-full:OtherFinancialAssets
643 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
644 Equity instrument Concept (Monetary) As Of Debit ifrs-full:EquityInstrumentsHeld
645 Convertible bonds Concept (Monetary) As Of Debit ifrs-full:CorporateDebtInstrumentsHeld
646 Derivatives Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
647 1072 - Disclosure - Summary of Significant Accounting Policies - Schedule of Effect on Application of IFRS 15 on Group's Consolidated Statement of Financial Position (Detail) Network

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648 Disclosure of detailed information about financial instruments [table] Table

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649 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
650 Currently stated [member] Member ifrs-full:RestatedMember
651 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
652 Amounts (Balance) without adoption of IFRS 15 [member] Member lpl:AmountsBalanceWithoutAdoptionOfIFRS15Member
653 Disclosure of detailed information about financial instruments [Line Items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
654 Current assets Abstract ifrs-full:CurrentAssetsAbstract
655 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
656 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
657 Provisions Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
658 1073 - Disclosure - Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Detail) Network

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

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 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
660 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
661 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
662 Buildings and structures [member] Member lpl:BuildingsAndStructuresMember
663 Machinery [member] Member ifrs-full:MachineryMember
664 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
665 Equipment, tools and vehicles [member] Member lpl:EquipmentToolsAndVehiclesMember
666 Range [axis] Axis ifrs-full:RangeAxis
667 Ranges [member] Member ifrs-full:RangesMember
668 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
669 Top of range [member] Member ifrs-full:TopOfRangeMember
670 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
671 Estimated useful lives of the assets Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
672 1074 - Disclosure - Summary of Significant Accounting Policies - Schedule of Impact on Depreciation Expense of Property Plant and Equipment and Newly Acquired Property Plant and Equipment (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfImpactOnDepreciationExpenseOfPropertyPlantAndEquipmentAndNewlyAcquiredPropertyPlantAndEquipment
673 Disclosure of detailed information about property, plant and equipment [table] Table

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674 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
675 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
676 Depreciation Adjustment [member] Member lpl:DepreciationAdjustmentMember
677 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
678 Increase (decrease) in depreciation expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationExpense
679 1075 - Disclosure - Summary of Significant Accounting Policies - Estimated Useful Lives of Intangible Assets, Other Than Goodwill (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesEstimatedUsefulLivesOfIntangibleAssetsOtherThanGoodwill
680 Disclosure of detailed information about intangible assets [table] Table

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 ifrs-full:DisclosureOfIntangibleAssetsTable
681 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
682 Intangible assets [Member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
683 Intellectual property rights [member] Member ifrs-full:RecipesFormulaeModelsDesignsAndPrototypesMember
684 Rights to use electricity, water and gas supply facilities [member] Member ifrs-full:CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRightsMember
685 Software [member] Member ifrs-full:ComputerSoftwareMember
686 Customer relationships [member] Member ifrs-full:CustomerrelatedIntangibleAssetsMember
687 Technology [member] Member ifrs-full:TechnologybasedIntangibleAssetsMember
688 Development costs [member] Member ifrs-full:CapitalisedDevelopmentExpenditureMember
689 Condominium and golf club memberships [member] Member lpl:CondominiumAndGolfClubMembershipsMember
690 Range [axis] Axis ifrs-full:RangeAxis
691 Ranges [member] Member ifrs-full:RangesMember
692 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
693 Top of range [member] Member ifrs-full:TopOfRangeMember
694 Disclosure of detailed information about intangible assets [Line Items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
695 Estimated useful lives of intangible assets, other than goodwill Concept (Text/String) For Period ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
696 1076 - Disclosure - Cash and Cash Equivalents and Deposits in Banks - Summary of Cash and Cash Equivalents and Deposits in Banks (Detail) Network

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697 Implied Table Table

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698 Cash and cash equivalents [abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
699 Current assets Abstract ifrs-full:CurrentAssetsAbstract
700 Cash and cash equivalents, Demand deposits Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
701 Deposits in banks, Time deposits Concept (Monetary) As Of Debit lpl:TimeDeposits1
702 Deposits in banks, Restricted cash Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
703 Deposits in banks Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsNotClassifiedAsCashEquivalents
704 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
705 Deposits in banks, Restricted cash Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
706 Cash and cash equivalents and deposits in banks Concept (Monetary) As Of Debit lpl:CashAndCashEquivalentsAndDepositsInBanks
707 1077 - Disclosure - Receivables and Other Assets - Summary of Trade Accounts and Notes Receivable (Detail) Network

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708 Disclosure of financial assets [table] Table

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709 Types of customers [axis] Axis ifrs-full:TypesOfCustomersAxis
710 Types of customers [member] Member ifrs-full:TypesOfCustomersMember
711 Trade, net [member] Member lpl:ExternalMember
712 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
713 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
714 Related parties [member] Member ifrs-full:RelatedPartiesMember
715 Disclosure of financial assets [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
716 Trade accounts and notes receivable, net Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
717 1078 - Disclosure - Receivables and Other Assets - Summary of Other Accounts Receivable (Detail) Network

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718 Implied Table Table

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719 Disclosure of financial assets [abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
720 Non-trade receivable, net Concept (Monetary) As Of Debit lpl:CurrentNonTradeAccountsReceivable
721 Accrued income Concept (Monetary) As Of Debit ifrs-full:CurrentAccruedIncome
722 Other accounts receivable, net Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
723 Long-term non-trade receivable Concept (Monetary) As Of Debit lpl:LongTermNonTradeReceivable
724 Other non-current accounts receivable, net Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivables
725 1079 - Disclosure - Receivables and Other Assets - Additional Information (Detail) Network

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726 Disclosure of financial assets [table] Table

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727 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
728 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
729 Related parties [member] Member ifrs-full:RelatedPartiesMember
730 Disclosure of financial assets [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
731 Other accounts receivable, net Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
732 1080 - Disclosure - Receivables and Other Assets - Aging of Trade Accounts and Notes Receivable, Other Accounts Receivable and Long-term Non-trade Receivable (Detail) Network

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

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734 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
735 Carrying amount [member] Member ifrs-full:CarryingAmountMember
736 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
737 Accumulated impairment [member] Member ifrs-full:AccumulatedImpairmentMember
738 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
739 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
740 Past due [member] Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
741 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
742 Past due status [member] Member ifrs-full:PastDueStatusMember
743 Not past due [member] Member ifrs-full:CurrentMember
744 1-15 days [member] Member lpl:LaterThanOneDayAndNotLaterThanFifteenDaysMember
745 16-30 days [member] Member lpl:LaterThanSixteenDaysAndNotLaterThanThirtyDaysMember
746 31-60 days [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember
747 More than 60 days [member] Member lpl:LaterThanTwoMonthsMember
748 Disclosure of financial assets that are either past due or impaired [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
749 Trade accounts and notes receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
750 Other accounts receivable Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
751 1081 - Disclosure - Receivables and Other Assets - Movement in Allowance for Impairment in Respect of Trade Accounts and Notes Receivable and Other Accounts Receivable (Detail) Network

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

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753 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
754 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
755 Other accounts receivable [member] Member lpl:OtherAccountReceivableMember
756 Trade accounts and notes receivable [member] Member ifrs-full:TradeReceivablesMember
757 Disclosure of financial assets that are either past due or impaired [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
758 Balance at the beginning of the year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
759 (Reversal of) bad debt expense Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
760 Balance at the end of the year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
761 1082 - Disclosure - Receivables and Other Assets - Summary of Other Assets (Detail) Network

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762 Implied Table Table

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763 Miscellaneous assets [abstract] Abstract ifrs-full:MiscellaneousAssetsAbstract
764 Current assets Abstract ifrs-full:CurrentAssetsAbstract
765 Advance payments Concept (Monetary) As Of Debit ifrs-full:CurrentAdvancesToSuppliers
766 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
767 Value added tax refundable Concept (Monetary) As Of Debit ifrs-full:CurrentValueAddedTaxReceivables
768 Emission rights Concept (Monetary) As Of Debit lpl:CurrentEmissionRights
769 Right to recover returned goods Concept (Monetary) As Of Debit lpl:CurrentRightToRecoverReturnedGoods
770 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
771 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
772 Long-term prepaid expenses Concept (Monetary) As Of Debit ifrs-full:NoncurrentPrepayments
773 1083 - Disclosure - Other Financial Assets - Summary of Other Financial Assets (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureOtherFinancialAssetsSummaryOfOtherFinancialAssets
774 Disclosure of Other Financial Assets [Table] Table

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*

 lpl:DisclosureOfOtherFinancialAssetsTable
775 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
776 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
777 Derivatives [member] Member ifrs-full:DerivativesMember
778 Debt securities [member] Member ifrs-full:DebtSecuritiesMember
779 Deposits [member] Member lpl:DepositsAndTimeDepositsMember
780 Short term Loans And Receivables[member] Member lpl:ShortTermLoansAndReceivablesMember
781 Equity securities [member] Member ifrs-full:EquityInvestmentsMember
782 Convertible bonds [member] Member lpl:ConvertibleBondsMember
783 Debt Instruments [member] Member lpl:DebtInstrumentsMember
784 Long term Loans And Receivables [member] Member lpl:LongTermLoansAndReceivablesMember
785 Deposits [member] Member lpl:DepositsMember
786 Long-term loans [member] Member lpl:LongTermLoansMember
787 Investment issuer [Axis] Axis invest:InvestmentIssuerAxis
788 Investment issuer [Domain] Member invest:InvestmentIssuerDomain
789 Government bonds [member] Member lpl:GovernmentBondsMember
790 Intellectual Discovery Co., Ltd. [member] Member lpl:IntellectualDiscoveryCoLtdMember
791 Kyulux, Inc. [member] Member lpl:KyuluxIncMember
792 Fineeva Co., Ltd [member] Member lpl:FineevaCoLtdMember
793 ARCH Venture Fund Vill, L.P. [member] Member lpl:ARCHVentureFundVillLPMember
794 Disclosure of other financial asset [Line Items] LineItems lpl:DisclosureOfOtherFinancialAssetsLineItems
795 Current assets Abstract ifrs-full:CurrentAssetsAbstract
796 Debt instrument Government bonds Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsAvailableforsale
797 Current Financial Assets At Fair value through profit Or loss Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss
798 Deposits Concept (Monetary) As Of Debit lpl:CurrentDeposits
799 Current financial assets measured at fair Value through Other Comprehensive Income Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
800 Short-term loans Concept (Monetary) As Of Debit ifrs-full:CurrentLoansAndReceivables
801 Current Financial Assets At Amortised Cost Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsAtAmortisedCost
802 Other current financial assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
803 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
804 Financial asset at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughProfitOrLoss
805 Non-current available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAvailableforsale
806 Other non-current financial assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
807 Non-current available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
808 1084 - Disclosure - Other Financial Assets - Additional Information (Detail) Network

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*

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809 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
810 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
811 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
812 Related parties [member] Member ifrs-full:RelatedPartiesMember
813 Disclosure of financial assets [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
814 Other financial assets Concept (Monetary) As Of Debit ifrs-full:OtherFinancialAssets
815 1085 - Disclosure - Inventories - Summary of Inventories (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInventoriesSummaryOfInventories
816 Implied Table Table

*

*

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817 Classes of current inventories [abstract] Abstract ifrs-full:ClassesOfInventoriesAbstract
818 Finished goods Concept (Monetary) As Of Debit ifrs-full:FinishedGoods
819 Work-in-process Concept (Monetary) As Of Debit ifrs-full:WorkInProgress
820 Raw materials Concept (Monetary) As Of Debit ifrs-full:RawMaterials
821 Supplies Concept (Monetary) As Of Debit ifrs-full:ProductionSupplies
822 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
823 1086 - Disclosure - Inventories - Inventories Recognized as Cost of Sales and Inventory Write-downs Included in Cost of Sales (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureInventoriesInventoriesRecognizedAsCostOfSalesAndInventoryWritedownsIncludedInCostOfSales
824 Implied Table Table

*

*

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825 Write-downs (reversals of write-downs) of inventories [abstract] Abstract ifrs-full:WritedownsReversalsOfWritedownsOfInventoriesAbstract
826 Inventories recognized as cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
827 Including: inventory write-downs Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
828 1087 - Disclosure - Investments in Equity Accounted Investees - Summary of Associates (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesSummaryOfAssociates
829 Disclosure of associates [table] Table

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 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
830 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
831 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
832 Paju Electric Glass Co., Ltd. [member] Member lpl:PajuElectricGlassCoLtdMember
833 INVENIA Co., Ltd. (LIG INVENIA Co., Ltd.) [member] Member lpl:InveniaCoLtdMember
834 WooRee E&L Co., Ltd. [member] Member lpl:WooReeEAndLCoLtdMember
835 LB Gemini new growth fund no.16 [member] Member lpl:LbGeminiNewGrowthFundNumberSixteenMember
836 YAS Co., Ltd. [member] Member lpl:YasCoLtdMember
837 AVATEC Co., Ltd. [member] Member lpl:AvatecCoLtdMember
838 Arctic Sentinel, Inc. (Fuhu, Inc.) [member] Member lpl:ArcticSentinelIncMember
839 CYNORA GmbH [member] Member lpl:CYNORAGmbHMember
840 Material Science Co Ltd [member] Member lpl:MaterialScienceCoLtdMember
841 Nanosys Inc [member] Member lpl:NanosysIncMember
842 Disclosure of associates and joint ventures [Line Items] LineItems lpl:DisclosureOfAssociatesAndJointVenturesLineItems
843 Location Concept (Text/String) For Period ifrs-full:PrincipalPlaceOfBusinessOfAssociate
844 Fiscal year end Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
845 Date of incorporation Concept (Text/String) For Period lpl:DateOfIncorporationOfAssociate
846 Business Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
847 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
848 Carrying amount Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
849 1088 - Disclosure - Investments in Equity Accounted Investees - Summary of Associates (Parenthetical) (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesSummaryOfAssociatesParenthetical
850 Disclosure of associates [table] Table

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 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
851 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
852 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
853 Entity that has significant influence over the controlling company [member] Member ifrs-full:JointControlOrSignificantInfluenceMember
854 Range [axis] Axis ifrs-full:RangeAxis
855 Ranges [member] Member ifrs-full:RangesMember
856 Top of range [member] Member ifrs-full:TopOfRangeMember
857 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
858 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
859 INVENIA Co., Ltd. (LIG INVENIA Co., Ltd.) [member] Member lpl:InveniaCoLtdMember
860 WooRee E&L Co., Ltd. [member] Member lpl:WooReeEAndLCoLtdMember
861 LB Gemini new growth fund no.16 [member] Member lpl:LbGeminiNewGrowthFundNumberSixteenMember
862 YAS Co., Ltd. [member] Member lpl:YasCoLtdMember
863 AVATEC Co., Ltd. [member] Member lpl:AvatecCoLtdMember
864 Arctic Sentinel, Inc. (Fuhu, Inc.) [member] Member lpl:ArcticSentinelIncMember
865 CYNORA GmbH [member] Member lpl:CYNORAGmbHMember
866 Material Science Co Ltd [member] Member lpl:MaterialScienceCoLtdMember
867 Nanosys Inc [member] Member lpl:NanosysIncMember
868 Disclosure of associates and joint ventures [Line Items] LineItems lpl:DisclosureOfAssociatesAndJointVenturesLineItems
869 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
870 Reversal of impairment loss recognised in profit or loss Concept (Monetary) For Period Credit ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss
871 Capital distribution received Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
872 Impairment loss recognised in profit or loss Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
873 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
874 Number of preferred stock shares acquired Concept (Shares) For Period lpl:NumberOfPreferredStockSharesAcquired
875 1089 - Disclosure - Investments in Equity Accounted Investees - Additional Information (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesAdditionalInformation
876 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
877 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
878 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
879 INVENIA Co., Ltd. (LIG INVENIA Co., Ltd.) [member] Member lpl:InveniaCoLtdMember
880 WooRee E&L Co., Ltd. [member] Member lpl:WooReeEAndLCoLtdMember
881 YAS Co., Ltd. [member] Member lpl:YasCoLtdMember
882 AVATEC Co., Ltd. [member] Member lpl:AvatecCoLtdMember
883 Disclosure of associates and joint ventures [Line Items] LineItems lpl:DisclosureOfAssociatesAndJointVenturesLineItems
884 Market value for Controlling Company's investments Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInAssociatesWherePriceQuotationsPublished
885 Dividends received from a joint venture and equity method investees Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities
886 1090 - Disclosure - Investments in Equity Accounted Investees - Summary of Financial Information of Significant Associate (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesSummaryOfFinancialInformationOfSignificantAssociate
887 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
888 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
889 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
890 Paju Electric Glass Co., Ltd. [member] Member lpl:PajuElectricGlassCoLtdMember
891 Disclosure of associates [Line Items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
892 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
893 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
894 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
895 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
896 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
897 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
898 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
899 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
900 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
901 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
902 1091 - Disclosure - Investments in Equity Accounted Investees - Reconciliation from Financial Information of Significant Associate to its Carrying Value in Consolidated Financial Statements (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesReconciliationFromFinancialInformationOfSignificantAssociateToItsCarryingValueInConsolidatedFinancialStatements
903 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
904 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
905 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
906 Paju Electric Glass Co., Ltd. [member] Member lpl:PajuElectricGlassCoLtdMember
907 Disclosure of associates [Line Items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
908 Net asset Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
909 Ownership interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
910 Net asset (applying ownership interest) Concept (Monetary) As Of Debit lpl:NetAssetsOwnershipInterestOfAssociates
911 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
912 Intra-group transaction Concept (Monetary) As Of Credit lpl:IntraGroupTransactionInAssociates
913 Book value Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
914 1092 - Disclosure - Investments in Equity Accounted Investees - Summary of Financial Information of Other Associates, in Aggregate (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesSummaryOfFinancialInformationOfOtherAssociatesInAggregate
915 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
916 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
917 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
918 Other associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
919 Disclosure of associates [Line Items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
920 Book value Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
921 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
922 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
923 Total comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
924 1093 - Disclosure - Investments in Equity Accounted Investees - Changes in Investments in Associates and a Joint Venture Accounted for Using The Equity Method (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureInvestmentsInEquityAccountedInvesteesChangesInInvestmentsInAssociatesAndAJointVentureAccountedForUsingTheEquityMethod
925 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
926 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
927 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
928 Paju Electric Glass Co., Ltd. [member] Member lpl:PajuElectricGlassCoLtdMember
929 Other associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
930 Disclosure of associates [Line Items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
931 Beginning balance Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
932 Acquisition/Disposal Concept (Monetary) For Period Debit lpl:ProceedsFromSalesPurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
933 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities
934 Equity income (loss) on investments Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
935 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
936 Other gain (loss) Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
937 Ending balance Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
938 1094 - Disclosure - Property, Plant and Equipment - Changes in Property, Plant and Equipment (Detail) Network

*

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 http://www.lgdisplay.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentChangesInPropertyPlantAndEquipment
939 Disclosure of detailed information about property, plant and equipment [table] Table

*

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 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
940 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
941 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
942 Land [member] Member ifrs-full:LandMember
943 Buildings and structures [member] Member lpl:BuildingsAndStructuresMember
944 Machinery And Equipment1 [member] Member lpl:MachineryAndEquipment1Member
945 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
946 Construction-in-progress [member] Member ifrs-full:ConstructionInProgressMember
947 Others [member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
948 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
949 Carrying amount [member] Member ifrs-full:CarryingAmountMember
950 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
951 Accumulated depreciation and amortisation [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
952 Accumulated impairment [member] Member ifrs-full:AccumulatedImpairmentMember
953 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
954 Beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
955 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
956 Depreciation Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
957 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
958 Impairment loss Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
959 Others Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
960 Effect of movements in exchange rates Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
961 Government grants received Concept (Monetary) For Period Debit lpl:IncreaseDecreaseThroughGovernmentGrantsPropertyPlantAndEquipment
962 Reclassification to assets held-for-sale Concept (Monetary) For Period Debit ifrs-full:ReclassificationIntoAvailableforsaleFinancialAssets
963 Ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
964 1095 - Disclosure - Property, Plant and Equipment - Capitalized Borrowing Costs and Capitalization Rate (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentCapitalizedBorrowingCostsAndCapitalizationRate
965 Implied Table Table

*

*

 implied:Table
966 Borrowing costs [abstract] Abstract ifrs-full:BorrowingCostsAbstract
967 Capitalized borrowing costs Concept (Monetary) For Period ifrs-full:BorrowingCostsCapitalised
968 Capitalization rate Concept (Percent) For Period ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
969 1096 - Disclosure - Intangible Assets - Changes in Intangible Assets (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureIntangibleAssetsChangesInIntangibleAssets
970 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

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*

 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
971 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
972 Intangible assets [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
973 Intellectual property rights [member] Member ifrs-full:RecipesFormulaeModelsDesignsAndPrototypesMember
974 Software [member] Member ifrs-full:ComputerSoftwareMember
975 Memberships [member] Member lpl:MembershipRelatedToIntangibleAssetsMember
976 Development costs [member] Member ifrs-full:CapitalisedDevelopmentExpenditureMember
977 Construction-in-progress (software) [member] Member ifrs-full:IntangibleAssetsUnderDevelopmentMember
978 Customer relationships [member] Member ifrs-full:CustomerrelatedIntangibleAssetsMember
979 Technology [member] Member ifrs-full:TechnologybasedIntangibleAssetsMember
980 Goodwill [member] Member ifrs-full:GoodwillMember
981 Others [member] Member ifrs-full:OtherIntangibleAssetsMember
982 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
983 Carrying amount [member] Member ifrs-full:CarryingAmountMember
984 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
985 Accumulated depreciation and amortisation [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
986 Accumulated impairment [member] Member ifrs-full:AccumulatedImpairmentMember
987 Methods of generation [axis] Axis ifrs-full:MethodsOfGenerationAxis
988 Methods of generation [member] Member ifrs-full:MethodsOfGenerationMember
989 Internally developed [member] Member ifrs-full:InternallyGeneratedMember
990 External purchases [member] Member ifrs-full:NotInternallyGeneratedMember
991 Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
992 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
993 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
994 Amortization Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
995 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsAndGoodwill
996 Impairment loss Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
997 Reversal of impairment loss Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
998 Transfer from construction-in-progress Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersIntangibleAssetsAndGoodwill
999 Effect of movements in exchange rates Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
1000 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1001 1097 - Disclosure - Intangible Assets - Changes in Intangible Assets (Parenthetical) (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureIntangibleAssetsChangesInIntangibleAssetsParenthetical
1002 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

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*

 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
1003 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1004 Intangible assets [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1005 Goodwill [member] Member ifrs-full:GoodwillMember
1006 Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
1007 Decrease in goodwill Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersIntangibleAssetsAndGoodwill
1008 1098 - Disclosure - Intangible Assets - Summary of Development Costs (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureIntangibleAssetsSummaryOfDevelopmentCosts
1009 Disclosure of development costs of intangible assets [table] Table

*

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 lpl:DisclosureOfDevelopmentCostsOfIntangibleAssetsTable
1010 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1011 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1012 Mobile [member] Member lpl:MobileMember
1013 Televisions [member] Member lpl:TelevisionsMember
1014 Notebook [member] Member lpl:NotebookMember
1015 Other Products [member] Member lpl:OtherProductsMember
1016 Disclosure of development costs of intangible assets [line items] LineItems lpl:DisclosureOfDevelopmentCostsOfIntangibleAssetsLineItems
1017 Development completed Concept (Monetary) For Period Debit lpl:DevelopmentCostsIntangibleAssetsDevelopmentCompleted
1018 Development in process Concept (Monetary) For Period Debit lpl:DevelopmentCostsIntangibleAssetsDevelopmentInProgress
1019 Development costs Concept (Monetary) For Period Debit lpl:DevelopmentCostsIntangibleAssets
1020 Remaining Useful life Concept (Text/String) For Period ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
1021 1099 - Disclosure - Financial Liabilities - Summary of Financial Liabilities (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialLiabilitiesSummaryOfFinancialLiabilities
1022 Disclosure of financial liabilities [table] Table

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1023 Currency [Axis] Axis srt:CurrencyAxis
1024 All Currencies [Domain] Member currency:AllCurrenciesDomain
1025 Won [member] Member currency:KRW
1026 Foreign currencies [member] Member lpl:ForeignCurrenciesMember
1027 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1028 Current Abstract ifrs-full:CategoriesOfCurrentFinancialLiabilitiesAbstract
1029 Current portion of long-term borrowings and bonds Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1030 Current financial liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilities
1031 Non-current Abstract ifrs-full:CategoriesOfNoncurrentFinancialLiabilitiesAbstract
1032 Non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1033 Bonds Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
1034 Derivatives Concept (Monetary) As Of Credit ifrs-full:NoncurrentDerivativeFinancialLiabilities
1035 Non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinancialLiabilities
1036 1100 - Disclosure - Financial Liabilities - Summary of Long-term Borrowings (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialLiabilitiesSummaryOfLongtermBorrowings
1037 Disclosure of detailed information about borrowings [table] Table

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*

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1038 Currency [Axis] Axis srt:CurrencyAxis
1039 All Currencies [Domain] Member currency:AllCurrenciesDomain
1040 Foreign currencies [member] Member lpl:ForeignCurrenciesMember
1041 Won [member] Member currency:KRW
1042 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1043 Counterparties [member] Member ifrs-full:CounterpartiesMember
1044 Woori bank [member] Member lpl:WooriBankMember
1045 Shinhan bank [member] Member lpl:ShinhanBankMember
1046 Korea development bank and others [member] Member lpl:KoreaDevelopmentBankAndOthersMember
1047 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1048 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1049 The Export-Import Bank of Korea [member] Member lpl:TheExportimportBankOfKoreaMember
1050 China Construction Bank [member] Member lpl:ChinaConstructionBankMember
1051 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1052 Long-term borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1053 Less current portion of long-term borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1054 Noncurrent portion of long-term borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1055 Long-term borrowings, annual interest rate description Concept (Text/String) For Period ifrs-full:BorrowingsInterestRateBasis
1056 Less current portion of long-term borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1057 1101 - Disclosure - Financial Liabilities - Summary of Long-term Borrowings (Parenthetical) (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialLiabilitiesSummaryOfLongtermBorrowingsParenthetical
1058 Disclosure of detailed information about borrowings [table] Table

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 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1059 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1060 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1061 The Export-Import Bank of Korea [member] Member lpl:TheExportimportBankOfKoreaMember
1062 China Construction Bank [member] Member lpl:ChinaConstructionBankMember
1063 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1064 Counterparties [member] Member ifrs-full:CounterpartiesMember
1065 Woori bank [member] Member lpl:WooriBankMember
1066 Korea development bank and others [member] Member lpl:KoreaDevelopmentBankAndOthersMember
1067 Currency [Axis] Axis srt:CurrencyAxis
1068 All Currencies [Domain] Member currency:AllCurrenciesDomain
1069 Foreign currencies [member] Member lpl:ForeignCurrenciesMember
1070 Won [member] Member currency:KRW
1071 Range [axis] Axis ifrs-full:RangeAxis
1072 Ranges [member] Member ifrs-full:RangesMember
1073 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1074 Top of range [member] Member ifrs-full:TopOfRangeMember
1075 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1076 Long-term borrowings, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1077 Long-term borrowings, annual interest rate adjustment Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
1078 Long-term borrowings, annual interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1079 1102 - Disclosure - Financial Liabilities - Details of Bonds Issued and Outstanding (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialLiabilitiesDetailsOfBondsIssuedAndOutstanding
1080 Disclosure of detailed information about borrowings [table] Table

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*

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1081 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
1082 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
1083 Bonds issued and outstanding [member] Member lpl:BondIssuedMember
1084 Range [axis] Axis ifrs-full:RangeAxis
1085 Ranges [member] Member ifrs-full:RangesMember
1086 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1087 Top of range [member] Member ifrs-full:TopOfRangeMember
1088 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1089 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1090 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1091 Discount on bonds [member] Member lpl:DiscountsOnBondsMember
1092 Currency [Axis] Axis srt:CurrencyAxis
1093 All Currencies [Domain] Member currency:AllCurrenciesDomain
1094 Won [member] Member currency:KRW
1095 Foreign currencies [member] Member lpl:ForeignCurrenciesMember
1096 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
1097 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
1098 Publicly issued bonds [Member] Member lpl:PubliclyIssuedBondsMember
1099 Privately issued bonds [member] Member lpl:PrivatelyIssuedBondsMember
1100 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1101 Bonds issued and outstanding, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1102 Bonds Concept (Monetary) As Of Credit ifrs-full:BondsIssued
1103 Bonds issued and outstanding, annual interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1104 Less current portion Concept (Monetary) As Of Credit ifrs-full:CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued
1105 Bonds Concept (Monetary) As Of Credit ifrs-full:BondsIssued
1106 Bonds Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
1107 1103 - Disclosure - Employee Benefits - Net Defined Benefit Liabilities (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsNetDefinedBenefitLiabilities
1108 Implied Table Table

*

*

 implied:Table
1109 Disclosure of defined benefit plans [abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
1110 Present value of partially funded defined benefit obligations Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1111 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1112 Defined benefit liabilities, net Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
1113 1104 - Disclosure - Employee Benefits - Changes in Present Value of Defined Benefit Obligations (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsChangesInPresentValueOfDefinedBenefitObligations
1114 Disclosure of net defined benefit liability (asset) [table] Table

*

*

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1115 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
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1117 Defined benefit obligations [member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1118 Disclosure of net defined benefit liability (asset) [Line Items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1119 Opening defined benefit obligations Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1120 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1121 Past service cost Concept (Monetary) For Period Credit ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
1122 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1123 Remeasurements (before tax) Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1124 Benefit payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1125 Transfers from (to) related parties Concept (Monetary) For Period Credit lpl:ParticipationInDefinedBenefitPlanThatTransfersOfBenefitLiabilityAssetBetweenGroupEntitiesRelatedPartyTransactions
1126 Curtailment of plans Concept (Monetary) For Period Debit ifrs-full:GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1127 Others Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
1128 Closing defined benefit obligations Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1129 1105 - Disclosure - Employee Benefits - Additional Information (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsAdditionalInformation
1130 Implied Table Table

*

*

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1131 Disclosure of defined benefit plans [abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
1132 Weighted average remaining maturity of defined benefit obligations Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
1133 Estimated contribution expected to be paid, December 31, 2019 Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1134 1106 - Disclosure - Employee Benefits - Changes in Fair Value of Plan Assets (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsChangesInFairValueOfPlanAssets
1135 Disclosure of net defined benefit liability (asset) [table] Table

*

*

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1136 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
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1138 Fair value of plan assets [member] Member ifrs-full:PlanAssetsMember
1139 Disclosure of net defined benefit liability (asset) [Line Items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1140 Beginning balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1141 Expected return on plan assets Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1142 Remeasurements (before tax) Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1143 Contributions by employer directly to plan assets Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1144 Benefit payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1145 Curtailment of plans Concept (Monetary) For Period Debit ifrs-full:GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1146 Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1147 1107 - Disclosure - Employee Benefits - Details of Plan Assets (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsDetailsOfPlanAssets
1148 Implied Table Table

*

*

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1149 Disclosure of fair value of plan assets [abstract] Abstract ifrs-full:DisclosureOfFairValueOfPlanAssetsAbstract
1150 Guaranteed deposits in banks Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets
1151 1108 - Disclosure - Employee Benefits - Expenses Recognized in Profit or Loss and Line Items Included in Consolidated Statements of Comprehensive Income (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsExpensesRecognizedInProfitOrLossAndLineItemsIncludedInConsolidatedStatementsOfComprehensiveIncome
1152 Disclosure of net defined benefit liability (asset) [table] Table

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*

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1153 Income Statement Location [axis] Axis lpl:IncomeStatementLocationAxis
1154 Income Statement Location1 [member] Member lpl:IncomeStatementLocation1Member
1155 Cost of sales [member] Member lpl:CostOfSalesMember
1156 Selling expenses [member] Member lpl:SellingExpensesMember
1157 Administrative expenses [member] Member lpl:AdministrativeExpensesMember
1158 Research and development expenses [member] Member lpl:ResearchAndDevelopmentExpensesMember
1159 Disclosure of net defined benefit liability (asset) [Line Items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1160 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1161 Past service cost Concept (Monetary) For Period Credit ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
1162 Net interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1163 Expenses related to defined benefit plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1164 1109 - Disclosure - Employee Benefits - Remeasurements of Net Defined Benefit Liabilities (Assets) Included in Other Comprehensive Income (Loss) (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsRemeasurementsOfNetDefinedBenefitLiabilitiesAssetsIncludedInOtherComprehensiveIncomeLoss
1165 Disclosure of net defined benefit liability (asset) [table] Table

*

*

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1166 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
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1168 Remeasurements of net defined benefit liabilities (assets) [member] Member ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
1169 Disclosure of net defined benefit liability (asset) [Line Items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1170 Beginning balance Concept (Monetary) As Of Credit ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans
1171 Actuarial profit or loss arising from: Experience adjustment Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1172 Actuarial profit or loss arising from: Demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
1173 Actuarial profit or loss arising from: Financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1174 Return on plan assets Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1175 Share of associates regarding remeasurements Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossBeforeTax
1176 Remeasurements Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax
1177 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
1178 Ending balance Concept (Monetary) As Of Credit ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans
1179 1110 - Disclosure - Employee Benefits - Principal Actuarial Assumptions (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsPrincipalActuarialAssumptions
1180 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

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1182 Gender type [Domain] Member lpl:GenderTypeDomain
1183 Males [member] Member lpl:MalesMember
1184 Females [member] Member lpl:FemalesMember
1185 Disclosure of sensitivity analysis for actuarial assumptions [Line Items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1186 Expected rate of salary increase Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
1187 Discount rate for defined benefit obligations Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1188 Actuarial assumption of expected rates of mortality at teenage Concept (Percent) For Period lpl:ActuarialAssumptionOfExpectedRatesOfMortalityAtTeenage
1189 Actuarial assumption of expected rates of mortality at twenties Concept (Percent) For Period lpl:ActuarialAssumptionOfExpectedRatesOfMortalityAtTwenties
1190 Actuarial assumption of expected rates of mortality at thirties Concept (Percent) For Period lpl:ActuarialAssumptionOfExpectedRatesOfMortalityAtThirties
1191 Actuarial assumption of expected rates of mortality at forties Concept (Percent) For Period lpl:ActuarialAssumptionOfExpectedRatesOfMortalityAtForties
1192 Actuarial assumption of expected rates of mortality at fifties Concept (Percent) For Period lpl:ActuarialAssumptionOfExpectedRatesOfMortalityAtFifties
1193 1111 - Disclosure - Employee Benefits - Amounts of Defined Benefit Obligations Affected by Reasonably Possible Changes to Respective Relevant Actuarial Assumptions (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEmployeeBenefitsAmountsOfDefinedBenefitObligationsAffectedByReasonablyPossibleChangesToRespectiveRelevantActuarialAssumptions
1194 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

 ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1195 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1196 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1197 Discount rate for defined benefit obligations [member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
1198 Expected rate of salary increase [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
1199 Disclosure of sensitivity analysis for actuarial assumptions [Line Items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1200 Defined benefit obligation 1% increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1201 Defined benefit obligation 1% decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1202 1112 - Disclosure - Provisions - Changes in Provisions (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureProvisionsChangesInProvisions
1203 Disclosure of other provisions [table] Table

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*

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1206 Litigations and claims [member] Member ifrs-full:LegalProceedingsProvisionMember
1207 Warranties [member] Member ifrs-full:WarrantyProvisionMember
1208 Others [member] Member ifrs-full:MiscellaneousOtherProvisionsMember
1209 Disclosure of other provisions [Line Items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1210 Beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1211 Adjustment from adoption of IFRS 15 Concept (Monetary) For Period Credit lpl:IncreaseDecreaseInProvisionsFromAdoptionOfIFRS15
1212 Additions (reversals) Concept (Monetary) For Period Credit ifrs-full:AdditionalProvisionsOtherProvisions
1213 Usage and reclassification Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1214 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1215 Current Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
1216 Non-current Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
1217 1113 - Disclosure - Provisions - Changes in Provisions (Parenthetical) (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureProvisionsChangesInProvisionsParenthetical
1218 Implied Table Table

*

*

 implied:Table
1219 Disclosure of other provisions [abstract] Abstract ifrs-full:DisclosureOfOtherProvisionsAbstract
1220 Applicable period from the date of purchase for warranties covering defective products Concept (Text/String) For Period ifrs-full:DescriptionOfTypesOfWarrantiesAndRelatedObligations
1221 1114 - Disclosure - Other Liabilities - Summary of Other Liabilities (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureOtherLiabilitiesSummaryOfOtherLiabilities
1222 Implied Table Table

*

*

 implied:Table
1223 Miscellaneous liabilities [abstract] Abstract ifrs-full:MiscellaneousLiabilitiesAbstract
1224 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
1225 Withholdings Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
1226 Unearned revenues Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
1227 Security deposits Concept (Monetary) As Of Credit ifrs-full:CurrentDepositsFromCustomers
1228 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
1229 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
1230 Long-term accrued expenses Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsNoncurrent
1231 Long-term other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentPayables
1232 Long-term unearned revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
1233 Security deposits Concept (Monetary) As Of Credit ifrs-full:NoncurrentDepositsFromCustomers
1234 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
1235 1115 - Disclosure - Contingent Liabilities and Commitments - Additional Information (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureContingentLiabilitiesAndCommitmentsAdditionalInformation
1236 Disclosure of contingent liabilities [table] Table

*

*

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1237 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1238 Counterparties [member] Member ifrs-full:CounterpartiesMember
1239 KEB Hana Bank [member] Member lpl:KEBHanaBankMember
1240 Bank of China [member] Member lpl:BankOfChinaMember
1241 Sumitomo Mitsui Banking Corporation [member] Member lpl:SumitomoMitsuiBankingCorporationMember
1242 Shinhan bank [member] Member lpl:ShinhanBankMember
1243 Korea Development Bank [member] Member lpl:KoreaDevelopmentBankMember
1244 KEB Hana Bank and Other Various Banks [member] Member lpl:KEBHanaBankAndOtherVariousBanksMember
1245 China Construction Bank [member] Member lpl:ChinaConstructionBankMember
1246 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1247 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1248 LG Display (China) Co., Ltd. [member] Member lpl:LGDisplayChinaCoLtdMember
1249 Currency [Axis] Axis srt:CurrencyAxis
1250 All Currencies [Domain] Member currency:AllCurrenciesDomain
1251 CNY [member] Member currency:CNY
1252 JPY [member] Member currency:JPY
1253 USD [member] Member currency:USD
1254 EUR [member] Member currency:EUR
1255 PLN [member] Member currency:PLN
1256 VND [member] Member currency:VND
1257 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
1258 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
1259 Long-term supply agreements [member] Member lpl:SupplyContractMember
1260 Range [axis] Axis ifrs-full:RangeAxis
1261 Ranges [member] Member ifrs-full:RangesMember
1262 Top of range [member] Member ifrs-full:TopOfRangeMember
1263 Disclosure of contingent liabilities [Line Items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
1264 Maximum aggregate accounts receivable sales negotiating facilities entered into with several banks Concept (Monetary) As Of lpl:AccountsReceivableSalesNegotiatingFacilitiesCovenantAmount
1265 Undrawn borrowing facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
1266 Payment guarantees obtained from banks for certain tax payments and settlement of litigation Concept (Monetary) As Of Debit ifrs-full:AssetsObtained
1267 Long-term advances Concept (Monetary) As Of Credit ifrs-full:NoncurrentAdvances
1268 Payment guarantees received Concept (Monetary) For Period ifrs-full:ProvisionOfGuaranteesOrCollateralToEntityRelatedPartyTransactions
1269 Secured bank borrowing Concept (Monetary) As Of Credit ifrs-full:SecuredBankLoansReceived
1270 Property, plant and equipment and others provided as pledged assets for secured bank loans Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
1271 1116 - Disclosure - Contingent Liabilities and Commitments - Maximum Amount of Accounts Receivables Sales and Amount of Sold Accounts Receivables before Maturity by Contract (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureContingentLiabilitiesAndCommitmentsMaximumAmountOfAccountsReceivablesSalesAndAmountOfSoldAccountsReceivablesBeforeMaturityByContract
1272 Disclosure of contingent liabilities [table] Table

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*

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1273 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1274 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1275 Parent [member] Member ifrs-full:ParentMember
1276 Consolidated subsidiaries [member] Member ifrs-full:SubsidiariesMember
1277 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1278 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1279 LG Display Singapore Pte. Ltd. [member] Member lpl:LGDisplaySingaporePteLtdMember
1280 LG Display Taiwan Co., Ltd. [member] Member lpl:LGDisplayTaiwanCoLtdMember
1281 LG Display Germany GmbH [member] Member lpl:LGDisplayGermanyGmbHMember
1282 LG Display America, Inc. [member] Member lpl:LGDisplayAmericaIncMember
1283 LG Display Japan Co., Ltd. [member] Member lpl:LGDisplayJapanCoLtdMember
1284 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
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1286 Shinhan bank [member] Member lpl:ShinhanBankMember
1287 Sumitomo Mitsui Banking Corporation [member] Member lpl:SumitomoMitsuiBankingCorporationMember
1288 Bank of Tokyo-Mitsubishi UFJ [member] Member lpl:BankofTokyoMitsubishiUFJMember
1289 BNP Paribas [member] Member lpl:BNPParibasMember
1290 ING Bank [member] Member lpl:INGBankMember
1291 Standard Chartered Bank [member] Member lpl:StandardCharteredBankMember
1292 Austrailia and New Zealand Banking Group Ltd [member] Member lpl:AustrailiaAndNewZealandBankingGroupLtdMember
1293 Taishin International Bank [member] Member lpl:TaishinInternationalBankMember
1294 Citibank [member] Member lpl:CitibankMember
1295 Hongkong & Shanghai Banking Corp. [member] Member lpl:HongkongAndShanghaiBankingCorpMember
1296 Currency [Axis] Axis srt:CurrencyAxis
1297 All Currencies [Domain] Member currency:AllCurrenciesDomain
1298 Won [member] Member currency:KRW
1299 USD [member] Member currency:USD
1300 Disclosure of contingent liabilities [Line Items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
1301 Maximum contractual amount of accounts receivables sales Concept (Monetary) As Of Debit lpl:MaximumContractualAmountOfAccountsReceivablesSales
1302 Not yet due contractual amount of sold accounts receivables before maturity Concept (Monetary) As Of Debit lpl:NotYetDueContractualAmountOfSoldAccountsReceivablesBeforeMaturity
1303 1117 - Disclosure - Capital and Reserves - Additional Information (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureCapitalAndReservesAdditionalInformation
1304 Implied Table Table

*

*

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1305 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1306 Number of shares authorized Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1307 Par value per share Concept (Share) As Of ifrs-full:ParValuePerShare
1308 Number of issued common shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1309 1118 - Disclosure - Capital and Reserves - Summary of Reserves at Reporting Date (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureCapitalAndReservesSummaryOfReservesAtReportingDate
1310 Implied Table Table

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1311 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1312 Foreign currency translation differences for foreign operations Concept (Monetary) As Of Credit ifrs-full:ReserveOfExchangeDifferencesOnTranslation
1313 Other comprehensive loss from associates (excluding remeasurements of net defined benefit liabilities) Concept (Monetary) For Period Credit lpl:ShareOfOtherComprehensiveIncomeOfAssociatesAccountedForUsingEquityMethodExcludingRemeasurementsOfNetDefinedBenefitLiabilities
1314 Reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1315 1119 - Disclosure - Capital and Reserves - Movement in Reserves (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureCapitalAndReservesMovementInReserves
1316 Disclosure of reserves within equity [table] Table

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*

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1317 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1318 Equity [member] Member ifrs-full:EquityMember
1319 Net change in fair value of available-for-sale financial assets [member] Member ifrs-full:ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember
1320 Foreign currency translation differences for foreign operations [member] Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
1321 Amount recognized in other comprehensive income loss from associates excluding remeasurements [member] Member lpl:AmountRecognizedInOtherComprehensiveIncomeLossFromAssociatesExcludingRemeasurementsMember
1322 Disclosure of reserves within equity [Line Items] LineItems ifrs-full:DisclosureOfReservesWithinEquityLineItems
1323 Beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1324 Change in reserves Concept (Monetary) For Period Credit lpl:ReservesPeriodIncreaseDecrease
1325 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1326 1120 - Disclosure - Geographic and Other Information - Revenue and Non-current Assets by Geography (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureGeographicAndOtherInformationRevenueAndNoncurrentAssetsByGeography
1327 Disclosure of geographical areas [table] Table

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1329 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1330 Domestic [member] Member ifrs-full:CountryOfDomicileMember
1331 China [member] Member country:CN
1332 Other countries [member] Member lpl:OtherCountriesMember
1333 Foreign countries [member] Member ifrs-full:ForeignCountriesMember
1334 Asia (excluding China) [member] Member lpl:AsiaExcludingChinaMember
1335 United States [member] Member country:US
1336 Europe (excluding Poland) [member] Member lpl:EuropeExcludingPolandMember
1337 Poland [member] Member country:PL
1338 Disclosure of geographical areas [Line Items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
1339 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1340 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1341 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1342 1121 - Disclosure - Geographic and Other Information - Additional Information (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureGeographicAndOtherInformationAdditionalInformation
1343 Disclosure of geographical areas [table] Table

*

*

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1344 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
1345 Customers [member] Member ifrs-full:MajorCustomersMember
1346 Company A [member] Member lpl:CompanyAMember
1347 Company B [member] Member lpl:CompanyBMember
1348 Top 10 Companies [member] Member lpl:Top10CompaniesMember
1349 Disclosure of geographical areas [Line Items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
1350 Sales revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1351 Percentage of sales revenue Concept (Percent) For Period ifrs-full:PercentageOfEntitysRevenue
1352 1122 - Disclosure - Geographic and Other Information - Revenue by Product and Services (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureGeographicAndOtherInformationRevenueByProductAndServices
1353 Disclosure of products and services [table] Table

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*

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1356 Televisions [member] Member lpl:TelevisionsMember
1357 Desktop monitors [member] Member lpl:DesktopMonitorsMember
1358 Tablet products [member] Member lpl:TabletProductsMember
1359 Notebook computers [member] Member lpl:NotebookComputersMember
1360 Mobile and others [member] Member lpl:MobileAndOthersMember
1361 Disclosure of products and services [Line Items] LineItems ifrs-full:DisclosureOfProductsAndServicesLineItems
1362 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1363 1123 - Disclosure - The Nature of Expenses and Others - Classification of Expenses by Nature (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureTheNatureOfExpensesAndOthersClassificationOfExpensesByNature
1364 Implied Table Table

*

*

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1365 Expenses by nature [abstract] Abstract ifrs-full:ExpenseByNatureAbstract
1366 Changes in inventories Concept (Monetary) For Period Debit ifrs-full:ChangesInInventoriesOfFinishedGoodsAndWorkInProgress
1367 Purchases of raw materials, merchandise and others Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
1368 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
1369 Outsourcing fees Concept (Monetary) For Period Debit lpl:OutsourcingFees
1370 Labor costs Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1371 Supplies and others Concept (Monetary) For Period Debit lpl:SuppliesAndOtherExpense
1372 Utility Concept (Monetary) For Period Debit lpl:UtilityExpenses
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1374 Shipping costs Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
1375 Advertising Concept (Monetary) For Period Debit lpl:AdvertisingExpenses
1376 Warranty expenses Concept (Monetary) For Period Debit lpl:WarrantyExpenses
1377 Travel Concept (Monetary) For Period Debit ifrs-full:TravelExpense
1378 Taxes and dues Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
1379 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
1380 Expenses by nature Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
1381 1124 - Disclosure - Selling and Administrative Expenses - Details of Selling and Administrative Expenses (Detail) Network

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1382 Statement of comprehensive income [Table] Table

*

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1385 Selling general and administrative expenses [member] Member lpl:SellingGeneralAndAdministrativeExpensesMember
1386 Statement of comprehensive income [Line Items] LineItems srt:CondensedStatementOfIncomeCaptionsLineItems
1387 Salaries Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
1388 Expenses related to defined benefit plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1389 Other employee benefits Concept (Monetary) For Period Debit ifrs-full:OtherLongtermBenefits
1390 Shipping costs Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
1391 Fees and commissions Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
1392 Depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
1393 Taxes and dues Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
1394 Advertising Concept (Monetary) For Period Debit lpl:AdvertisingExpenses
1395 Warranty expenses Concept (Monetary) For Period Debit lpl:WarrantyExpenses
1396 Rent Concept (Monetary) For Period Debit ifrs-full:RentalExpense
1397 Insurance Concept (Monetary) For Period Debit ifrs-full:InsuranceExpense
1398 Travel Concept (Monetary) For Period Debit ifrs-full:TravelExpense
1399 Training Concept (Monetary) For Period Debit lpl:TrainingExpense
1400 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
1401 Selling, general and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
1402 1125 - Disclosure - Selling and Administrative Expenses - Details of Selling and Administrative Expenses (Parenthetical) (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureSellingAndAdministrativeExpensesDetailsOfSellingAndAdministrativeExpensesParenthetical
1403 Statement of comprehensive income [Table] Table

*

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1405 Income Statement Location1 [member] Member lpl:IncomeStatementLocation1Member
1406 Selling general and administrative expenses [member] Member lpl:SellingGeneralAndAdministrativeExpensesMember
1407 Statement of comprehensive income [Line Items] LineItems srt:CondensedStatementOfIncomeCaptionsLineItems
1408 Expense related to retirement allowance Concept (Monetary) For Period Debit lpl:RetirementAllowanceExpense
1409 Expense related to the define contribution plan Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1410 1126 - Disclosure - Personnel Expenses - Disclosure of Details of Personnel Expenses (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosurePersonnelExpensesDisclosureOfDetailsOfPersonnelExpenses
1411 Statement of comprehensive income [Table] Table

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1413 Income Statement Location1 [member] Member lpl:IncomeStatementLocation1Member
1414 Personnel expenses [member] Member lpl:PersonnelExpensesMember
1415 Statement of comprehensive income [Line Items] LineItems srt:CondensedStatementOfIncomeCaptionsLineItems
1416 Salaries and wages Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
1417 Other employee benefits Concept (Monetary) For Period Debit ifrs-full:OtherLongtermBenefits
1418 Contributions to National Pension plan Concept (Monetary) For Period Debit lpl:ContributionsToNationalPensionScheme
1419 Expenses related to defined benefit plan and defined contribution plan Concept (Monetary) For Period Debit lpl:PostemploymentBenefitExpenseDefinedBenefitPlansAndDefinedContributionPlan
1420 Personnel expenses Concept (Monetary) For Period Debit lpl:PersonnelExpenses
1421 1127 - Disclosure - Personnel Expenses - Disclosure of Details of Personnel Expenses (Parenthetical) (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosurePersonnelExpensesDisclosureOfDetailsOfPersonnelExpensesParenthetical
1422 Statement of comprehensive income [Table] Table

*

*

 srt:CondensedStatementOfComprehensiveIncomeTable
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1424 Income Statement Location1 [member] Member lpl:IncomeStatementLocation1Member
1425 Personnel expenses [member] Member lpl:PersonnelExpensesMember
1426 Statement of comprehensive income [Line Items] LineItems srt:CondensedStatementOfIncomeCaptionsLineItems
1427 Expense related to the define contribution plan Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1428 1128 - Disclosure - Other Income and Other Expenses - Summary of Other Income (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureOtherIncomeAndOtherExpensesSummaryOfOtherIncome
1429 Implied Table Table

*

*

 implied:Table
1430 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1431 Foreign currency gain Concept (Monetary) For Period Credit ifrs-full:NetForeignExchangeGain
1432 Gain on disposal of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
1433 Gain on disposal of intangible assets Concept (Monetary) For Period Credit lpl:GainOnDisposalOfIntangibleAssets
1434 Reversal of impairment loss on intangible assets Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
1435 Rental income Concept (Monetary) For Period Credit ifrs-full:RentalIncome
1436 Others Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
1437 Other income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
1438 1129 - Disclosure - Other Income and Other Expenses - Summary of Other Expenses (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureOtherIncomeAndOtherExpensesSummaryOfOtherExpenses
1439 Implied Table Table

*

*

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1440 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1441 Foreign currency loss Concept (Monetary) For Period Debit ifrs-full:NetForeignExchangeLoss
1442 Other bad debt expenses Concept (Monetary) For Period Debit lpl:OtherBadDebtExpense
1443 Loss on disposal of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:LossesOnDisposalsOfPropertyPlantAndEquipment
1444 Impairment loss on property, plant and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1445 Loss on disposal of intangible assets Concept (Monetary) For Period Debit lpl:LossOnDisposalOfIntangibleAssets
1446 Impairment loss on intangible assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
1447 Donations Concept (Monetary) For Period Debit ifrs-full:DonationsAndSubsidiesExpense
1448 Expenses related to legal proceedings or claims and others Concept (Monetary) For Period Debit lpl:ExpensesRelatedToLegalProceedingsClaimsAndOthers
1449 Other expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByFunction
1450 1130 - Disclosure - Finance Income and Finance Costs - Summary of Finance Income and Finance Costs recognized in Profit or Loss (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureFinanceIncomeAndFinanceCostsSummaryOfFinanceIncomeAndFinanceCostsRecognizedInProfitOrLoss
1451 Implied Table Table

*

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1452 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1453 Finance income Abstract lpl:FinanceIncomeAbstract
1454 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
1455 Foreign currency gain Concept (Monetary) For Period Credit lpl:GainsOnForeignCurrencyTransaction
1456 Gain on disposal of investments in equity accounted investees Concept (Monetary) For Period Credit lpl:GainOnDisposalOfInvestmentsAccountedForUsingEquityMethod
1457 Reversal of impairment loss of investments in equity accounted investees Concept (Monetary) For Period Credit lpl:ReversalOfImpairmentLossOfInvestmentsInEquityAccountedInvestees
1458 Gain on transaction of derivatives Concept (Monetary) For Period Credit lpl:GainsOnTransactionOfDerivatives
1459 Gain on valuation of derivatives Concept (Monetary) For Period Credit ifrs-full:GainsOnChangeInFairValueOfDerivatives
1460 Gain on disposal of available-for-sale financial assets Concept (Monetary) For Period Credit lpl:GainOnDisposalOfAvailableforsaleFinancialAssets
1461 Gain on valuation of financial asset at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
1462 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1463 Finance costs Abstract lpl:FinanceCostsAbstract
1464 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1465 Foreign currency loss Concept (Monetary) For Period Debit lpl:LossesOnForeignCurrencyTransaction
1466 Loss on disposal of investments in equity accounted investees Concept (Monetary) For Period Debit lpl:LossOnDisposalOfInvestmentsAccountedForUsingEquityMethod
1467 Loss on impairment of investments in equity accounted investees Concept (Monetary) For Period Debit lpl:ImpairmentLossRecognisedInProfitOrLossInvestmentPropertyAccountedForUsingEquityMethod
1468 Loss on impairment of available-for-sale financial assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
1469 Loss on valuation of financial asset at fair value through profit or loss Concept (Monetary) For Period Debit lpl:LossOnValuationOfFinancialAsset
1470 Loss on sale of trade accounts and notes receivable Concept (Monetary) For Period Debit lpl:LossOnSaleOfTradeAccountsAndNotesReceivable
1471 Loss on transaction of derivatives Concept (Monetary) For Period Debit lpl:LossesOnTransactionOfDerivatives
1472 Loss on valuation of derivatives Concept (Monetary) For Period Debit ifrs-full:LossesOnChangeInFairValueOfDerivatives
1473 Others Concept (Monetary) For Period Debit ifrs-full:OtherFinanceCost
1474 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1475 1131 - Disclosure - Finance Income and Finance Costs - Finance Income and Costs Recognized in Other Comprehensive Income or Loss (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureFinanceIncomeAndFinanceCostsFinanceIncomeAndCostsRecognizedInOtherComprehensiveIncomeOrLoss
1476 Implied Table Table

*

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1477 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1478 Foreign currency translation differences for foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
1479 Net change in fair value of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
1480 Tax effect Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
1481 Finance income (costs) recognized in other comprehensive income (loss) after tax Concept (Monetary) For Period Credit lpl:FinanceIncomeCostsRecognizedInOtherComprehensiveIncome
1482 1132 - Disclosure - Income Taxes - Details of Income Tax Expense (Benefit) Recognized in Profit (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureIncomeTaxesDetailsOfIncomeTaxExpenseBenefitRecognizedInProfit
1483 Implied Table Table

*

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1485 Current tax expense Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
1486 Current year Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
1487 Adjustment for prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1488 Current tax expense (income) and adjustments for current tax of prior periods Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
1489 Deferred tax expense (benefit) Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
1490 Origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
1491 Change in unrecognized deferred tax assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
1492 Deferred tax expense (benefit) Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
1493 Actual income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1494 1133 - Disclosure - Income Taxes - Income Taxes Recognized Directly in Other Comprehensive Income (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureIncomeTaxesIncomeTaxesRecognizedDirectlyInOtherComprehensiveIncome
1495 Implied Table Table

*

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1497 Net change in fair value of available-for-sale financial assets, before tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
1498 Remeasurements of net defined benefit liabilities (assets), before tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
1499 Foreign currency translation differences for foreign operations, before tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
1500 Change in equity of equity method investee, before tax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodBeforeTax
1501 Other comprehensive income, before tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTax
1502 Net change in fair value of available-for-sale financial assets, tax benefit (expense) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
1503 Remeasurements of net defined benefit liabilities (assets), tax benefit (expense) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
1504 Foreign currency translation differences for foreign operations, tax benefit (expense) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
1505 Change in equity of equity method investee, tax benefit (expense) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1506 Other comprehensive income, tax benefit (expense) Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1507 Net change in fair value of available-for-sale financial assets, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
1508 Remeasurements of net defined benefit liabilities (assets), net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
1509 Foreign currency translation differences for foreign operations, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
1510 Change in equity of equity method investee, net of tax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1511 Other comprehensive income (loss) for the year, net of income tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
1512 1134 - Disclosure - Income Taxes - Reconciliation of Actual Effective Tax Rate (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureIncomeTaxesReconciliationOfActualEffectiveTaxRate
1513 Implied Table Table

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1514 Income tax relating to components of other comprehensive income [abstract] Abstract ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeAbstract
1515 Income tax using the statutory tax rate of each country Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1516 Non-deductible expenses, percentage Concept (Percent) For Period ifrs-full:TaxRateEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1517 Tax credits, percentage Concept (Percent) For Period lpl:TaxRateEffectOfTaxCredits
1518 Change in unrecognized deferred tax assets Concept (Percent) For Period ifrs-full:TaxRateEffectFromChangeInTaxRate
1519 Adjustment for prior years Concept (Percent) For Period ifrs-full:TaxRateEffectOfAdjustmentsForCurrentTaxOfPriorPeriods
1520 Effect on change in tax rate, percentage Concept (Percent) For Period ifrs-full:TaxRateEffectOfForeignTaxRates
1521 Others, percentage Concept (Percent) For Period ifrs-full:OtherTaxRateEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1522 Actual effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
1523 Profit (loss) before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1524 Income tax using the statutory tax rate of each country, amount Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1525 Non-deductible expenses, amount Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1526 Tax credits, amount Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfTaxLosses
1527 Change in unrecognized deferred tax assets, amount Concept (Monetary) For Period Credit lpl:DeferredTaxExpenseIncomeNotRecognisedInProfitOrLoss
1528 Adjustment for prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1529 Effect on change in tax rate (Note 24(d)) Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
1530 Others Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1531 Actual income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1532 1135 - Disclosure - Deferred Tax Assets and Liabilities - Additional Information (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureDeferredTaxAssetsAndLiabilitiesAdditionalInformation
1533 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1534 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1535 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1536 Parent [member] Member ifrs-full:ParentMember
1537 Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1538 Temporary differences on investments in subsidiaries the Controlling Company did not recognize deferred tax liabilities Concept (Monetary) As Of ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
1539 Recognized deferred tax assets in relation to tax credit carryforwards Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
1540 Statutory tax rate attributable to owners of the Controlling Company Concept (Percent) For Period ifrs-full:TaxRateEffectFromChangeInTaxRate
1541 Effective applicable tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1542 Tax expense (income) at applicable tax rate Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1543 1136 - Disclosure - Deferred Tax Assets and Liabilities - Tax Credit Carryforwards Expiration Dates (Detail) Network

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1544 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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1545 Maturity [axis] Axis ifrs-full:MaturityAxis
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1548 1-2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
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1555 1137 - Disclosure - Deferred Tax Assets and Liabilities - Details of Deferred Tax Assets and Liabilities (Detail) Network

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*

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1578 1138 - Disclosure - Deferred Tax Assets and Liabilities - Changes in Deferred Tax Assets and Liabilities (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureDeferredTaxAssetsAndLiabilitiesChangesInDeferredTaxAssetsAndLiabilities
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*

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1596 Subsidiaries and associates [member] Member lpl:SubsidiariesAndAssociatesMember
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1600 Other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
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1602 1139 - Disclosure - Earnings (Loss) Per Share Attributable to Owners of the Controlling Company - Summary of Basic Earnings per Share (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureEarningsLossPerShareAttributableToOwnersOfTheControllingCompanySummaryOfBasicEarningsPerShare
1603 Implied Table Table

*

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1607 Earnings (loss) per share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
1608 1140 - Disclosure - Financial Risk Management - Exposure to Foreign Currency Risk Based on Notional Amounts (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementExposureToForeignCurrencyRiskBasedOnNotionalAmounts
1609 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

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1622 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
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1624 Currency swap contracts Concept (Monetary) As Of Debit lpl:ForeignCurrencySwapContract
1625 Net exposure Concept (Monetary) As Of lpl:IncreaseDecreaseInRiskExposureAssociatedWithInstrumentsSharingCharacteristic
1626 1141 - Disclosure - Financial Risk Management - Average Exchange Rates Applied during Reporting Periods (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementAverageExchangeRatesAppliedDuringReportingPeriods
1627 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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1639 Reporting date spot rate Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
1640 1142 - Disclosure - Financial Risk Management - Summary of Changes in Equity and Profit or Loss (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementSummaryOfChangesInEquityAndProfitOrLoss
1641 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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1660 1143 - Disclosure - Financial Risk Management - Interest Rate Profile of Interest-bearing Financial Instruments (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementInterestRateProfileOfInterestbearingFinancialInstruments
1661 Disclosure of financial instruments by type of interest rate [table] Table

*

*

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1669 Financial assets and liabilities Concept (Monetary) As Of Debit lpl:FinancialAssetsAndLiabilities
1670 1144 - Disclosure - Financial Risk Management - Equity and Profit or Loss Sensitivity Analysis for Variable Rate Instruments (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementEquityAndProfitOrLossSensitivityAnalysisForVariableRateInstruments
1671 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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1682 Percentage change in interest rate Concept (Percent) As Of lpl:RiskExposureAssociatedWithInstrumentsSharingCharacteristicPercentageChangeInRisk
1683 1145 - Disclosure - Financial Risk Management - Maximum Exposure to Credit Risk of Financial Assets (Detail) Network

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 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementMaximumExposureToCreditRiskOfFinancialAssets
1684 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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1697 Non-trade receivable Concept (Monetary) As Of Debit lpl:CurrentNontradeReceivables
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1699 Available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
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1702 Short-term loans Concept (Monetary) As Of Debit ifrs-full:CurrentLoansAndReceivables
1703 Long-term loans Concept (Monetary) As Of Debit ifrs-full:NoncurrentLoansAndReceivables
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1710 1146 - Disclosure - Financial Risk Management - Contractual Maturities of Financial Liabilities, Including Estimated Interest Payments (Detail) Network

*

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 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementContractualMaturitiesOfFinancialLiabilitiesIncludingEstimatedInterestPayments
1711 Disclosure of maturity analysis for financial liabilities [Table] Table

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*

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1716 Trade accounts and notes payable [member] Member lpl:TradeAccountsAndNotesPayableMember
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1718 Long-term other accounts payable [member] Member lpl:LongTermOtherAccountsPayableMember
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1723 6-12 months [member] Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
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1725 2-5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
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1728 Secured bank borrowings Concept (Monetary) As Of Credit ifrs-full:SecuredBankLoansReceived
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1731 Trade accounts and notes payable Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1732 Other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1733 Long-term other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentPayables
1734 Security deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
1735 Derivatives Concept (Monetary) As Of Credit lpl:DerivativeFinancialLiabilitiesCarryingAmount
1736 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1737 Bank borrowings Concept (Monetary) As Of Credit ifrs-full:BankBorrowingsUndiscountedCashFlows
1738 Unsecured bond issues Concept (Monetary) As Of Credit ifrs-full:BondsIssuedUndiscountedCashFlows
1739 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
1740 Derivatives Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1741 Contractual cash flows for financial liabilities Concept (Monetary) As Of Credit lpl:NonderivativeAndDerivativeFinancialLiabilitiesUndiscountedCashFlows
1742 1147 - Disclosure - Financial Risk Management - Summary of Capital Management (Detail) Network

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*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementSummaryOfCapitalManagement
1743 Implied Table Table

*

*

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1746 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
1747 Cash and deposits in banks Concept (Monetary) As Of Debit lpl:CashAndDepositsInBank
1748 Borrowings (including bonds) Concept (Monetary) As Of Credit ifrs-full:Borrowings
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1750 Net borrowings to equity ratio Concept (Percent) As Of lpl:NetBorrowingsToEquityRatio
1751 1148 - Disclosure - Financial Risk Management - Fair Values of Financial Assets and Liabilities, Together with Carrying Amounts Shown in Consolidated Statement of Financial Position (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementFairValuesOfFinancialAssetsAndLiabilitiesTogetherWithCarryingAmountsShownInConsolidatedStatementOfFinancialPosition
1752 Disclosure of detailed information about financial instruments [table] Table

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1768 Deposits in banks Concept (Monetary) As Of Debit lpl:ShortAndLongtermDepositsInBanks
1769 Trade accounts and notes receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1770 Non-trade receivable Concept (Monetary) As Of Debit lpl:CurrentNontradeReceivables
1771 Accrued income Concept (Monetary) As Of Debit ifrs-full:CurrentAccruedIncome
1772 Deposits Concept (Monetary) As Of Debit lpl:DepositAssets1
1773 Short-term loans Concept (Monetary) As Of Debit ifrs-full:CurrentLoansAndReceivables
1774 Long-term loans Concept (Monetary) As Of Debit ifrs-full:NoncurrentLoansAndReceivables
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1776 Financial assets at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
1777 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
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1780 Unsecured bank borrowings Concept (Monetary) As Of Credit ifrs-full:UnsecuredBankLoansReceived
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1783 Other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1784 Long-term other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentPayables
1785 Security deposits Concept (Monetary) As Of Debit lpl:SecurityDeposits
1786 1149 - Disclosure - Financial Risk Management - Fair Value Hierarchy Classifications of Financial Instruments Measured at Fair Value (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementFairValueHierarchyClassificationsOfFinancialInstrumentsMeasuredAtFairValue
1787 Disclosure of detailed information about financial instruments [table] Table

*

*

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1794 Level 3 [member] Member ifrs-full:Level3OfFairValueHierarchyMember
1795 Disclosure of detailed information about financial instruments [Line Items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1796 Equity instrument Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossMeasuredAsSuchInAccordanceWithExemptionForReacquisitionOfOwnEquityInstruments
1797 Available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
1798 Convertible bonds Concept (Monetary) For Period Credit lpl:Gainlossfromchangesinfairvalueofconvertiblebondsrelatedpartytransactions
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1801 Debt instrument Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome
1802 Derivatives, liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentDerivativeFinancialLiabilities
1803 1150 - Disclosure - Financial Risk Management - Fair Value Hierarchy Classifications, Valuation Technique and Inputs for Fair Value Measurements of Financial Instruments not Measured at Fair Value (Detail) Network

*

*

 http://www.lgdisplay.com/taxonomy/role/DisclosureFinancialRiskManagementFairValueHierarchyClassificationsValuationTechniqueAndInputsForFairValueMeasurementsOfFinancialInstrumentsNotMeasuredAtFairValue
1804 Disclosure of fair value measurement of liabilities [table] Table

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1820 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1821 Top of range [member] Member ifrs-full:TopOfRangeMember
1822 Disclosure of fair value measurement of liabilities [Line Items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesLineItems
1823 Secured bank borrowings Concept (Monetary) As Of Credit ifrs-full:SecuredBankLoansReceived
1824 Unsecured bank borrowings Concept (Monetary) As Of Credit ifrs-full:UnsecuredBankLoansReceived
1825 Unsecured bond issues Concept (Monetary) As Of Credit ifrs-full:BondsIssued
1826 Other accounts payable Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1827 Valuation technique Concept (Text/String) For Period ifrs-full:DescriptionOfChangeInValuationTechniqueUsedInFairValueMeasurementLiabilities
1828 Input Concept (Text/String) For Period ifrs-full:DescriptionOfInputsUsedInFairValueMeasurementLiabilities
1829 Borrowings, bonds and others Concept (Percent) For Period ifrs-full:InterestRateSignificantUnobservableInputsLiabilities
1830 1151 - Disclosure - Changes in Liabilities Arising from Financing Activities - Summary of Changes in Liabilities Arising from Financing Activities (Detail) Network

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1831 Disclosure of reconciliation of liabilities arising from financing activities [table] Table

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 ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable
1832 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1833 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1834 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
1835 Current portion of long-term borrowings and bonds [member] Member lpl:CurrentPortionOfLongTermBorrowingsAndBondsMember
1836 Long-term borrowings [member] Member ifrs-full:LongtermBorrowingsMember
1837 Bonds [member] Member lpl:BondsMember
1838 Disclosure of reconciliation of liabilities arising from financing activities [Line Items] LineItems ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems
1839 Beginning balance Concept (Monetary) As Of Debit lpl:ReconciliationOfLiabilitiesArisingFromFinancingActivities
1840 Cash flows from financing activities Concept (Monetary) For Period lpl:CashFlowsFromUsedInFinancingActivitiesArisingFromChangeInLiabilitiesOfFinancing
1841 Reclassification Concept (Monetary) For Period Credit lpl:ReclassificationOfLiabilitiesArisingFromFinancingActivities
1842 Exchange rate effect Concept (Monetary) For Period Credit lpl:GainOrLossOnForeignCurrencyTranslationArisingFromFinancingActivities
1843 Effective interest adjustment Concept (Monetary) For Period Credit lpl:EffectiveInterestAdjustmentArisingFromFinancingActivities
1844 Ending balance Concept (Monetary) As Of Debit lpl:ReconciliationOfLiabilitiesArisingFromFinancingActivities
1845 1152 - Disclosure - Related Parties and Others - Significant Transactions, Trade Accounts and Notes Receivable and Payable Occurred in Normal Course of Business with Related Parties (Detail) Network

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1846 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1847 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1848 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1849 Joint ventures [Member] Member ifrs-full:JointVenturesMember
1850 Associates [Member] Member ifrs-full:AssociatesMember
1851 Entity that has significant influence over the controlling company [member] Member ifrs-full:JointControlOrSignificantInfluenceMember
1852 Subsidiaries of the entity that has significant influence over the Controlling Company [Member] Member lpl:SubsidiariesOfTheEntityThatHasSignificantInfluenceOverTheControllingCompanyMember
1853 Legal entity [Axis] Axis dei:LegalEntityAxis
1854 Entity [Domain] Member dei:EntityDomain
1855 Suzhou Raken Technology Co., Ltd. [member] Member lpl:SuzhouRakenTechnologyCoLtdMember
1856 New Optics Ltd. [member] Member lpl:NewOpticsLtdMember
1857 New Optics USA, Inc.[member] Member lpl:NewOpticsUsaIncMember
1858 NEWOPTIX RS. SA DE CV [member] Member lpl:NewoptixRsSaDeCvMember
1859 INVENIA Co., Ltd. (LIG INVENIA Co., Ltd.) [member] Member lpl:InveniaCoLtdMember
1860 TLI Inc. [Member] Member lpl:TLIIncMember
1861 AVACO Co., Ltd. [Member] Member lpl:AvacoCoLtdMember
1862 AVATEC Co., Ltd. [member] Member lpl:AvatecCoLtdMember
1863 Paju Electric Glass Co., Ltd. [member] Member lpl:PajuElectricGlassCoLtdMember
1864 Shinbo Electric Co., Ltd. [Member] Member lpl:ShinboElectricCoLtdMember
1865 Narenanotech corporation [member] Member lpl:NarenanotechCorporationMember
1866 WooRee E&L Co Ltd [member] Member lpl:WooreeCoLtdMember
1867 YAS Co., Ltd. [member] Member lpl:YasCoLtdMember
1868 LB Gemini new growth fund no.16 [member] Member lpl:LbGeminiNewGrowthFundNumberSixteenMember
1869 LG Electronics Inc. [member] Member lpl:LGElectronicsIncMember
1870 LG Electronics India Pvt. Ltd. [Member] Member lpl:LgElectronicsIndiaPvtLtdMember
1871 LG Electronics Vietnam Haiphong Co., Ltd. [member] Member lpl:LgElectronicsVietnamHaiphongCoLtdMember
1872 LG Electronics Nanjing New Technology Co., Ltd. [member] Member lpl:LgElectronicsNanjingNewTechnologyCoLtdMember
1873 LG Electronics RUS, LLC [member] Member lpl:LgElectronicsRusLlcMember
1874 LG Electronics do Brasil Ltda. [member] Member lpl:LgElectronicsDoBrasilLtdaMember
1875 LG Innotek Co., Ltd. [member] Member lpl:LgInnotekCoLtdMember
1876 Qingdao LG Inspur Digital Communication Co., Ltd. [member] Member lpl:QingdaoLgInspurDigitalCommunicationCoLtdMember
1877 Inspur LG Digital Mobile Communications Co., Ltd. [member] Member lpl:InspurLgDigitalMobileCommunicationsCoLtdMember
1878 LG Electronics Mexicalli, S.A. DE C.V [member] Member lpl:LgElectronicsMexicalliDeMember
1879 LG Electronics Mlawa Sp. z o.o. [member] Member lpl:LgElectronicsMlawaSpzooMember
1880 LG Electronics Taiwan Taipei Co., Ltd. [member] Member lpl:LgElectronicsTaiwanTaipeiCoLtdMember
1881 LG Electronics Wroclaw Sp. z o.o. [member] Member lpl:LgElectronicsWroclawSpzooMember
1882 LG Hitachi Water Solutions Co., Ltd. [member] Member lpl:LgHitachiWaterSolutionsCoLtdMember
1883 LG Electronics Reynosa, S.A. DE C.V. [member] Member lpl:LgElectronicsReynosaSADeCVMember
1884 LG Electronics Almaty Kazakhstan [member] Member lpl:LgElectronicsAlmatyKazakhstanMember
1885 LG Electronics Air-Conditioning (Shandong) Co., Ltd. [member] Member lpl:LgElectronicsAirconditioningShandongCoLtdMember
1886 Hi Entech Co., Ltd. [member] Member lpl:HiEntechCoLtdMember
1887 Hientech (Tianjin) Co., Ltd. [member] Member lpl:HientechTianjinCoLtdMember
1888 LG Electronics S.A. Pty Ltd [member] Member lpl:LGElectronicsSAPtyLtdMember
1889 Other related parties [member] Member ifrs-full:OtherRelatedPartiesMember
1890 LG Electronics Mexicali, S.A. DE C.V. [Member] Member lpl:LgElectronicsMexicaliSadecvMember
1891 LG Electronics Egypt S.A.E. [member] Member lpl:LgElectronicsEgyptSaeMember
1892 WooRee E&L Co., Ltd. [member] Member lpl:WooReeEAndLCoLtdMember
1893 LG Electronics do Brasil Ltd [member] Member lpl:LgElectronicsDoBrasilLtdMember
1894 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1895 Sales and others Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGoodsRelatedPartyTransactions
1896 Dividend income Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities
1897 Purchase of raw material and others Concept (Monetary) For Period Debit ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
1898 Acquisition of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:PurchasesOfPropertyAndOtherAssetsRelatedPartyTransactions
1899 Outsourcing fees Concept (Monetary) For Period Debit ifrs-full:ServicesReceivedRelatedPartyTransactions
1900 Other costs Concept (Monetary) For Period Debit lpl:OtherCostsRelatedPartyTransactions
1901 Trade accounts and notes receivable and others Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
1902 Trade accounts and notes payable and others Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
1903 1153 - Disclosure - Related Parties and Others - Details of Significant Cash Transactions of Loans and Collection of Loans Occurred in Normal Course of Business with Related Parties (Detail) Network

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1904 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1905 Legal entity [Axis] Axis dei:LegalEntityAxis
1906 Entity [Domain] Member dei:EntityDomain
1907 New Optics Ltd. [member] Member lpl:NewOpticsLtdMember
1908 INVENIA Co., Ltd. (LIG INVENIA Co., Ltd.) [member] Member lpl:InveniaCoLtdMember
1909 Narenanotech corporation [member] Member lpl:NarenanotechCorporationMember
1910 YAS Co., Ltd. [member] Member lpl:YasCoLtdMember
1911 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1912 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1913 InveniaCoLtdAnd YasCoLtdMember [member] Member lpl:InveniacoltdandYascoltdmemberMember
1914 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1915 Beginning balance Concept (Monetary) As Of Debit lpl:LoansToRelatedParty
1916 Increase Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToRelatedParties
1917 Decrease Concept (Monetary) For Period Debit ifrs-full:CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToRelatedParties
1918 Ending balance Concept (Monetary) As Of Debit lpl:LoansToRelatedParty
1919 1154 - Disclosure - Related Parties and Others - Compensation Costs of Key Management (Detail) Network

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1920 Implied Table Table

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 implied:Table
1921 Disclosure of transactions between related parties [abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
1922 Short-term benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1923 Expenses related to the defined benefit plan Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
1924 Key management personnel compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1925 1155 - Disclosure - Supplemental Cash Flow Information - Summary of Non-cash Investing and Financing Activities (Detail) Network

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1926 Implied Table Table

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 implied:Table
1927 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
1928 Changes in other accounts payable arising from the purchase of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:OtherMaterialNoncashItems
1929 1156 - Disclosure - Non-current Assets Held for Sale - Schedule of Non-current Assets as Held for Sale (Detail) Network

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1930 Non-current Assets Held for Sale [table] Table

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 lpl:NoncurrentAssetsHeldForSaleTable
1931 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1932 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1933 Non-current assets held for sale [member] Member ifrs-full:NoncurrentAssetsHeldForSaleMember
1934 Non-current Assets Held for Sale [line items] LineItems lpl:NoncurrentAssetsHeldForSaleLineItems
1935 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment

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