LINE CORP (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://linecorp.com/taxonomy/role/DocumentandEntityInformation
2 Implied Table Table

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 implied:Table
3 Document and entity information [abstract] Abstract ln: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://linecorp.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
20 Implied Table Table

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 implied:Table
21 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
22 Assets Abstract ifrs-full:AssetsAbstract
23 Current assets Abstract ifrs-full:CurrentAssetsAbstract
24 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
25 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
26 Other financial assets, current Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
27 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
28 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
29 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentNonfinancialAssets
30 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
31 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
32 Property and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
33 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
34 Other intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
35 Investments in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
36 Other financial assets, non-current Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
37 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
38 Other non-currentassets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentNonfinancialAssets
39 Total non-currentassets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
40 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
41 Liabilities Abstract ifrs-full:LiabilitiesAbstract
42 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
43 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
44 Other financial liabilities, current Concept (Monetary) As Of Credit ifrs-full:OtherCurrentFinancialLiabilities
45 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsCurrent
46 Income tax payables Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
47 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
48 Advances received Concept (Monetary) As Of Credit ifrs-full:CurrentAdvances
49 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
50 Provisions, current Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
51 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentNonfinancialLiabilities
52 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
53 Non-currentliabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
54 Corporate bonds Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
55 Other financial liabilities, non-current Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentFinancialLiabilities
56 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
57 Provisions, non-current Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
58 Post-employment benefits Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
59 Other non-currentliabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentNonfinancialLiabilities
60 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
61 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
62 Shareholders' equity Abstract ifrs-full:EquityAbstract
63 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
64 Share premium Concept (Monetary) As Of Credit ifrs-full:SharePremium
65 Treasury shares Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
66 Accumulated deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
67 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
68 Equity attributable to the shareholders of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
69 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
70 Total shareholders' equity Concept (Monetary) As Of Credit ifrs-full:Equity
71 Total liabilities and shareholders' equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
72 1004 - Statement - Consolidated Statements of Profit or Loss Network

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 http://linecorp.com/taxonomy/role/StatementOfComprehensiveIncomeProfitOrLossByFunctionOfExpense-310000
73 Implied Table Table

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 implied:Table
74 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
75 Revenues and other operating income: Abstract ifrs-full:RevenueAbstract
76 Revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
77 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
78 Total revenues and other operating income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
79 Operating expenses: Abstract ifrs-full:ExpenseByNatureAbstract
80 Payment processing and licensing expenses Concept (Monetary) For Period Debit ln:PaymentProcessingAndLicensingExpenses
81 Sales commission expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
82 Employee compensation expenses Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
83 Marketing expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
84 Infrastructure and communication expenses Concept (Monetary) For Period Debit ln:InfrastructureAndCommunicationExpenses
85 Outsourcing and other service expenses Concept (Monetary) For Period Debit ifrs-full:ServicesExpense
86 Depreciation and amortization expenses Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
87 Other operating expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
88 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
89 Profit from operating activities Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
90 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
91 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
92 Share of loss of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
93 Loss on foreign currency transactions, net Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
94 Other non-operating income Concept (Monetary) For Period Credit ln:OtherNonOperatingIncome1
95 Other non-operating expenses Concept (Monetary) For Period Debit ln:OtherNonOperatingExpenses
96 Profit before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
97 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
98 Profit/(Loss) for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
99 (Loss)/profit from discontinued operations, net of tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
100 Profit/(Loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
101 Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
102 The shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
103 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
104 Earnings per share Abstract ifrs-full:BasicAndDilutedEarningsPerShareAbstract
105 Basic profit/(loss) for the year attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
106 Diluted profit/(loss) for the year attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
107 Earnings per share from continuing operations Abstract ln:BasicAndDilutedEarningsPerShareContinuingOperationsAbstract
108 Basic profit/(loss) from continuing operations attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
109 Diluted profit/(loss) from continuing operations attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
110 Earnings per share from discontinued operations Abstract ln:BasicAndDilutedEarningsPerShareDiscontinuedOperationsAbstract
111 Basic (loss)/profit from discontinued operations attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromDiscontinuedOperations
112 Diluted (loss)/profit from discontinued operations attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShareFromDiscontinuedOperations
113 1005 - Statement - Consolidated Statements of Comprehensive Income Network

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 http://linecorp.com/taxonomy/role/StatementOfComprehensiveIncomeOCIComponentsPresentedNetOfTax-410000
114 Implied Table Table

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 implied:Table
115 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
116 Profit/(Loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
117 Other comprehensive income Items that will not be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
118 Net changes in fair value of equity instruments at FVOCI Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments
119 Remeasurement of defined benefit plans Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
120 Income tax relating to items that will not be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
121 Other comprehensive income - Items that may be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
122 Net changes in fair value of debt instruments at FVOCI Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
123 Reclassification to profit or loss of debt instruments at FVOCI Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
124 Net changes in fair value of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
125 Reclassification to profit or loss of available-for-sale financial assets Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax
126 Exchange differences on translation of foreign operations: (Loss)/gain arising during the year Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationBeforeTax
127 Reclassification to profit or loss Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationBeforeTax
128 Proportionate share of other comprehensive income of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
129 Reclassification to profit or loss on the proportionate share of other comprehensive income or loss of associates and joint ventures Concept (Monetary) For Period Credit ln:ReclassificationToProfitOrLossOnTheProportionateShareOfOtherComprehensiveIncomeOrLossOfAssociatesAndJointVentures
130 Income tax relating to items that may be reclassified subsequently to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
131 Total other comprehensive (loss)/income for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
132 Comprehensive (loss)/income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
133 Attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
134 The shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
135 Non-controllinginterests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
136 1006 - Statement - Consolidated Statements of Changes in Equity Network

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 http://linecorp.com/taxonomy/role/StatementOfChangesInEquity-610000
137 Statement [table] Table

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 ln:StatementTable
138 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
139 Shareholder's equity [Member] Member ifrs-full:EquityMember
140 Share capital [member] Member ifrs-full:IssuedCapitalMember
141 Share premium [member] Member ifrs-full:SharePremiumMember
142 Accumulated deficit [Member] Member ifrs-full:RetainedEarningsMember
143 Accumulated other comprehensive income [member] Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
144 Total equity attributable to the shareholder of the Company [Member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
145 Non-controlling interests [Member] Member ifrs-full:NoncontrollingInterestsMember
146 Treasury shares [member] Member ifrs-full:TreasurySharesMember
147 Reserves within equity [axis] Axis ifrs-full:ReservesWithinEquityAxis
148 Other [Member] Member ifrs-full:OtherReservesMember
149 Accumulated other comprehensive income: Foreign currency translation reserve [Member] Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
150 Accumulated other comprehensive income: Available-for-sale reserve [Member] Member ifrs-full:ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember
151 Accumulated other comprehensive income: Defined benefit plan reserve [Member] Member ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
152 Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member] Member ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember
153 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
154 Currently stated [member] Member ifrs-full:RestatedMember
155 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
156 Adjusted balance [member] Member ln:AdjustedBalanceMember
157 Statement [Line Items] LineItems ln:StatementLineItems
158 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
159 Comprehensive income/(loss) Abstract ifrs-full:ComprehensiveIncomeAbstract
160 Profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
161 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
162 Total comprehensive income/ (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
163 Recognition of share-based payments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
164 Forfeiture of stock options Concept (Monetary) For Period Credit ln:ForfeitureOfStockOptions
165 Exercise of stock options Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
166 Changes in interests in subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInEquityOfSubsidiaries
167 Derecognition of non-controlling interests due to loss of control of subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughDisposalOfSubsidiary
168 Acquisition of subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAcquisitionOfSubsidiary
169 Acquisition of non-controlling interest Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
170 Initial public offering Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
171 Issuance of common shares and acquisition of treasury shares under Employee Stock Ownership Plan Concept (Monetary) For Period Debit ln:IssuanceOfCommonSharesAndAcquisitionOfTreasurySharesShareOwnershipPlan
172 Issuance of convertible bonds with stock acquisition rights Concept (Monetary) For Period Credit ln:IssuanceOfConvertibleBondsWithStockAcquisitionRights
173 Disposal of treasury shares Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
174 Acquisition of treasury shares Concept (Monetary) For Period Debit ln:IncreaseDecreaseThroughTreasurySharesAcquired
175 Transfer of accumulated other comprehensive income to accumulated deficit Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings
176 Other Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
177 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
178 1007 - Statement - Consolidated Statements of Cash Flows Network

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 http://linecorp.com/taxonomy/role/StatementOfCashFlowsIndirectMethod-520000
179 Implied Table Table

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 implied:Table
180 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
181 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
182 Profit before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
183 (Loss)/profit before tax from discontinued operations Concept (Monetary) For Period Credit ln:ProfitLossBeforeTaxDiscontinuedOperations1
184 Profit before tax Concept (Monetary) For Period Credit ifrs-full:AccountingProfit
185 Adjustments for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
186 Depreciation and amortization expenses Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
187 Finance income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncome
188 Finance costs Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFinanceCosts
189 Dividend income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForDividendIncome
190 Share-based compensation expenses Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
191 Gain on loss of control of subsidiaries and business transfer Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
192 Loss/(gain) on financial assets at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
193 Gain on disposal of property and equipment and intangible assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets
194 Impairment loss of other intangible assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
195 Impairment loss of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
196 Gain on sale of available-for-sale financial assets Concept (Monetary) For Period Credit ln:GainOnDisposalOfAvailableforsaleFinancialAssets
197 Share of loss of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
198 Dilution gains from changes in equity interest in associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
199 Loss/(gain) on foreign currency transactions, net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
200 Changes in: Abstract ln:IncreaseDecreaseInOperatingCapital1Abstract
201 Trade and other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables
202 Contract assets Concept (Monetary) For Period Debit ln:AdjustmentsForIncreaseDecreaseInContractAssets
203 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
204 Trade and other payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
205 Accrued expenses Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherOperatingPayables
206 Contract liabilities Concept (Monetary) For Period Debit ln:AdjustmentsForIncreaseDecreaseInContractLiabilities
207 Advances received Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers
208 Deferred revenue Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
209 Provisions Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
210 Post-employment benefits Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
211 Other current assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets
212 Other current liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherCurrentLiabilities
213 Others Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsToReconcileProfitLoss
214 Cash provided by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
215 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
216 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
217 Dividend received Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsOperatingActivities
218 Payment of issuance costs for corporate bonds Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
219 Income taxes paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
220 Net cash provided by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
221 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
222 Purchases of time deposits Concept (Monetary) For Period Credit ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities
223 Proceeds from maturities of time deposits Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities
224 Purchase of equity investments Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
225 Proceeds from sales of equity investments Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
226 Investments in debt instruments Concept (Monetary) For Period Credit ln:InvestmentsInDebtInstruments
227 Proceeds from redemption of debt instruments Concept (Monetary) For Period Debit ln:ProceedsFromRedemptionOfDebtInstruments
228 Acquisition of property and equipment and intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
229 Proceeds from sale of property and equipment and intangible assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
230 Investments in associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
231 Return on capital from investments in associates Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInterestsInAssociates
232 Payments of office security deposits Concept (Monetary) For Period Credit ln:PaymentsOfOfficeSecurityDeposits
233 Refund of office security deposits Concept (Monetary) For Period Debit ln:RefundOfOfficeSecurityDeposits
234 Payment of guarantee deposits Concept (Monetary) For Period Credit ln:PaymentsForGuaranteeDeposits
235 Return of the office security deposits received under sublease agreement Concept (Monetary) For Period Credit ln:ReturnOfOfficeSecurityDepositsReceivedUnderSubleaseAgreement
236 Guarantee deposits for the Japanese Payment Services Act Concept (Monetary) For Period Credit ln:GuaranteeDepositsForJapanesePaymentServicesAct
237 Return of the guarantee deposits for the Japanese Payment Services Act Concept (Monetary) For Period Debit ln:ReturnOfGuaranteeDepositsForJapanesePaymentServicesAct
238 Payment for acquisition of subsidiaries and businesses Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
239 Proceeds from acquisition of subsidiaries and businesses, net of cash acquired Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
240 Cash disposed on loss of control of subsidiary and business transfer Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
241 Payments for loan receivables Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
242 Collection of loan receivables Concept (Monetary) For Period Debit ifrs-full:CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToOtherPartiesClassifiedAsInvestingActivities
243 Others Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
244 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
245 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
246 Repayment of short-term borrowings, net Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings
247 Proceeds from of short-term borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromCurrentBorrowings
248 Repayment of short-term borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
249 Payments for redemption of bonds Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBondsNotesAndDebentures
250 Repayment of borrowing arrangement Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
251 Proceeds from issuance of corporate bonds Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
252 Payments of common shares issuance costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
253 Proceeds from initial public offering Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
254 Proceeds from exercise of stock options Concept (Monetary) For Period Debit ifrs-full:ProceedsFromExerciseOfOptions
255 Payment for acquisition of interest in subsidiaries from non-controllinginterests Concept (Monetary) For Period Credit ifrs-full:PaymentsFromChangesInOwnershipInterestsInSubsidiaries
256 Capital contribution from third party non-controlling interests Concept (Monetary) For Period Debit ifrs-full:ProceedsFromContributionsOfNoncontrollingInterests
257 Proceeds from disposal of treasury shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSaleOrIssueOfTreasuryShares
258 Others Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
259 Net cash provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
260 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
261 Cash and cash equivalents at the beginning of the year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
262 Effect of exchange rate fluctuations on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
263 Cash and cash equivalents at the end of the year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
264 1008 - Disclosure - Reporting Entity Network

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265 Implied Table Table

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266 Text block [abstract] Abstract ln:TextBlockAbstract
267 Reporting Entity Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
268 1009 - Disclosure - Basis of Preparation Network

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269 Implied Table Table

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270 Text block [abstract] Abstract ln:TextBlockAbstract
271 Basis of Preparation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
272 1010 - Disclosure - Significant Accounting Policies Network

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273 Implied Table Table

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274 Text block [abstract] Abstract ln:TextBlockAbstract
275 Significant Accounting Policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
276 1011 - Disclosure - Significant Accounting Judgments, Estimates and Assumptions Network

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277 Implied Table Table

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278 Text block [abstract] Abstract ln:TextBlockAbstract
279 Significant Accounting Judgments, Estimates and Assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
280 1012 - Disclosure - Segment Information Network

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281 Implied Table Table

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282 Text block [abstract] Abstract ln:TextBlockAbstract
283 Segment Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
284 1013 - Disclosure - Cash and Cash Equivalents Network

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285 Implied Table Table

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286 Text block [abstract] Abstract ln:TextBlockAbstract
287 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
288 1014 - Disclosure - Trade and Other Receivables Network

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289 Implied Table Table

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290 Text block [abstract] Abstract ln:TextBlockAbstract
291 Trade and Other Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
292 1015 - Disclosure - Inventories Network

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293 Implied Table Table

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294 Text block [abstract] Abstract ln:TextBlockAbstract
295 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
296 1016 - Disclosure - Property and Equipment Network

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297 Implied Table Table

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298 Text block [abstract] Abstract ln:TextBlockAbstract
299 Property and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
300 1017 - Disclosure - Goodwill and Other Intangible Assets Network

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301 Implied Table Table

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302 Text block [abstract] Abstract ln:TextBlockAbstract
303 Goodwill and Other Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsAndGoodwillExplanatory
304 1018 - Disclosure - Impairment Network

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305 Implied Table Table

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306 Text block [abstract] Abstract ln:TextBlockAbstract
307 Impairment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentOfAssetsExplanatory
308 1019 - Disclosure - Provisions Network

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309 Implied Table Table

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310 Text block [abstract] Abstract ln:TextBlockAbstract
311 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory
312 1020 - Disclosure - Income Taxes Network

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313 Implied Table Table

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314 Text block [abstract] Abstract ln:TextBlockAbstract
315 Income Taxes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
316 1021 - Disclosure - Other Current Liabilities Network

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317 Implied Table Table

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318 Text block [abstract] Abstract ln:TextBlockAbstract
319 Other Current Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherCurrentLiabilitiesExplanatory
320 1022 - Disclosure - Financial Assets and Financial Liabilities Network

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321 Implied Table Table

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322 Text block [abstract] Abstract ln:TextBlockAbstract
323 Financial Assets and Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
324 1023 - Disclosure - Employment Benefits Network

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325 Implied Table Table

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326 Text block [abstract] Abstract ln:TextBlockAbstract
327 Employment Benefits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
328 1024 - Disclosure - Leases-Group as Lessee Network

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329 Implied Table Table

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330 Text block [abstract] Abstract ln:TextBlockAbstract
331 Leases-Group as Lessee Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
332 1025 - Disclosure - Leases-Group as Lessor Network

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333 Implied Table Table

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334 Text block [abstract] Abstract ln:TextBlockAbstract
335 Leases-Group as Lessor Concept (Text Block (HTML)) For Period ln:DisclosureOfMinimumCommittedAnnualRentalsExplanatory
336 1026 - Disclosure - Issued Capital and Reserves Network

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337 Implied Table Table

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338 Text block [abstract] Abstract ln:TextBlockAbstract
339 Issued Capital and Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
340 1027 - Disclosure - Supplemental Cash Flow Information Network

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341 Implied Table Table

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342 Text block [abstract] Abstract ln:TextBlockAbstract
343 Supplemental Cash Flow Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
344 1028 - Disclosure - Revenue from Contracts with Customers Network

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345 Implied Table Table

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346 Text block [abstract] Abstract ln:TextBlockAbstract
347 Revenue from Contracts with Customers Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
348 1029 - Disclosure - Other Income and Expenses Network

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349 Implied Table Table

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350 Text block [abstract] Abstract ln:TextBlockAbstract
351 Other Income and Expenses Concept (Text Block (HTML)) For Period ln:DisclosureOfOtherIncomeExpenseExplanatory
352 1030 - Disclosure - Discontinued Operations Network

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353 Implied Table Table

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354 Text block [abstract] Abstract ln:TextBlockAbstract
355 Discontinued Operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory
356 1031 - Disclosure - Earnings per Share Network

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357 Implied Table Table

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358 Text block [abstract] Abstract ln:TextBlockAbstract
359 Earnings per Share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
360 1032 - Disclosure - Financial Risk Management Network

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361 Implied Table Table

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362 Text block [abstract] Abstract ln:TextBlockAbstract
363 Financial Risk Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
364 1033 - Disclosure - Fair Value Measurements Network

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365 Implied Table Table

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366 Text block [abstract] Abstract ln:TextBlockAbstract
367 Fair Value Measurements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementExplanatory
368 1034 - Disclosure - Share-Based Payments Network

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369 Implied Table Table

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370 Text block [abstract] Abstract ln:TextBlockAbstract
371 Share-Based Payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
372 1035 - Disclosure - Related Party Transactions Network

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373 Implied Table Table

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374 Text block [abstract] Abstract ln:TextBlockAbstract
375 Related Party Transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
376 1036 - Disclosure - Business Combinations Network

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377 Implied Table Table

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378 Text block [abstract] Abstract ln:TextBlockAbstract
379 Business Combinations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBusinessCombinationsExplanatory
380 1037 - Disclosure - Principal Subsidiaries Network

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381 Implied Table Table

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382 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
383 Principal Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
384 1038 - Disclosure - Investments in Associates and Joint Ventures Network

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385 Implied Table Table

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386 Text block [abstract] Abstract ln:TextBlockAbstract
387 Investments in Associates and Joint Ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory
388 1039 - Disclosure - Subsequent Events Network

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389 Implied Table Table

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390 Text block [abstract] Abstract ln:TextBlockAbstract
391 Subsequent Events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
392 1040 - Disclosure - Significant Accounting Policies (Policies) Network

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393 Implied Table Table

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394 Text block [abstract] Abstract ln:TextBlockAbstract
395 Basis of Consolidation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfConsolidationExplanatory
396 Basis of Measurement Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfMeasurementBasesUsedInPreparingFinancialStatements
397 Business Combinations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory
398 Associates and Joint Arrangements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
399 Foreign Currencies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
400 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
401 Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
402 Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
403 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
404 Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
405 Treasury Shares Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTreasurySharesExplanatory
406 Property and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
407 Borrowing Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
408 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
409 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
410 Impairment of Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory
411 Impairment of Non-Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
412 Employee Compensation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
413 Share-based Payments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
414 Marketing Expenses Concept (Text Block (HTML)) For Period ln:DescriptionOfAccountingPolicyForMarketingExpensesExplanatory
415 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
416 Revenue Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
417 Finance Income and Finance Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinanceIncomeAndCostsExplanatory
418 Other Non-Operating Income and Expenses Concept (Text Block (HTML)) For Period ln:DescriptionOfAccountingPolicyForOtherNonoperatingIncomeAndExpensesExplanatory
419 Income Taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
420 Earnings per Share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
421 Operating Segments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
422 Discontinued Operations and Non-current Assets Held for Sale Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory
423 Standards Issued but not yet Effective Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
424 New and Amended Standards and Interpretations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
425 1041 - Disclosure - Significant Accounting Policies (Tables) Network

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426 Implied Table Table

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427 Text block [abstract] Abstract ln:TextBlockAbstract
428 Estimated Useful Lives for Property and Equipment Concept (Text Block (HTML)) For Period ln:DisclosureOfPropertyPlantAndEquipmentEstimatedUsefulLifeExplanatory
429 Estimated Useful Lives for Intangible Assets with Finite Lives Concept (Text Block (HTML)) For Period ln:DisclosureOfIntangibleAssetEstimatedUsefulLifeExplanatory
430 Schedule of Opening Balance of Accumulated Deficit Concept (Text Block (HTML)) For Period ln:DisclosureOfOpeningBalanceOfAccumulatedDeficitExplanatory
431 Schedule of Adjustments Made to Line Items Presented on the Financial Statements Due to Application of IFRS 15 Concept (Text Block (HTML)) For Period ln:DisclosureOfAdjustmentsMadeToLineItemsPresentedOnFinancialStatementsDueToApplicationOfIFRS15Explanatory
432 Schedule of Adjustments Made to Line Items Presented on Profit or Loss Due to Application of IFRS 15 Concept (Text Block (HTML)) For Period ln:DisclosureOfAdjustmentsMadeToLineItemsPresentedOnProfitOrLossDueToApplicationOfIFRS15Explanatory
433 Schedule of Classification of Financial Assets and Liabilities Under IFRS9 Concept (Text Block (HTML)) For Period ln:DisclosureOfClassificationOfFinancialAssetsAndLiabilitiesUnderIfrsExplanatory
434 Summary of Accumulated Deficit and Accumulated Other Comprehensive Income Concept (Text Block (HTML)) For Period ln:DisclosureOfAccumulatedDeficitAndAccumulatedOtherComprehensiveIncomeExplanatory
435 1042 - Disclosure - Segment Information (Tables) Network

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436 Implied Table Table

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437 Text block [abstract] Abstract ln:TextBlockAbstract
438 Reconciliation of Segment Profit to Profit Before Tax from Continuing Operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
439 Reconciliation of Segment Profit to Profit Before Tax from Continuing Operations Concept (Text Block (HTML)) For Period ln:DisclosureOfReconciliationOfSegmentProfitToProfitBeforeTaxFromContinuingOperationsExplanatory
440 Summary of Revenue Recognized Concept (Text Block (HTML)) For Period ifrs-full:InformationAboutRelationshipBetweenDisclosureOfDisaggregatedRevenueFromContractsWithCustomersAndRevenueInformationForReportableSegmentsExplanatory
441 Revenues from External Customers Concept (Text Block (HTML)) For Period ln:DisclosureOfRevenueFromExternalCustomersByGeographicalAreasExplanatory
442 Summary of Non-current Operating Assets Classified by Country or Region Concept (Text Block (HTML)) For Period ln:DisclosureOfNoncurrentOperatingAssetsByGeographicalAreasExplanatory
443 1043 - Disclosure - Cash and Cash Equivalents (Tables) Network

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444 Implied Table Table

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445 Text block [abstract] Abstract ln:TextBlockAbstract
446 Breakdown of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ln:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory
447 1044 - Disclosure - Trade and Other Receivables (Tables) Network

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448 Implied Table Table

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449 Text block [abstract] Abstract ln:TextBlockAbstract
450 Summary of Trade and Other Receivables Concept (Text Block (HTML)) For Period ln:DisclosureOfDetailedInformationOfTradeAndOtherReceivablesExplanatory
451 1045 - Disclosure - Inventories (Tables) Network

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452 Implied Table Table

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453 Text block [abstract] Abstract ln:TextBlockAbstract
454 Summary of Inventories Concept (Text Block (HTML)) For Period ln:DisclosureOfDetailedInformationAboutInventoriesExplanatory
455 1046 - Disclosure - Property and Equipment (Tables) Network

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456 Implied Table Table

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457 Text block [abstract] Abstract ln:TextBlockAbstract
458 Changes in Property and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
459 Contractual Commitments for the Acquisition of Property and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsExplanatory
460 1047 - Disclosure - Goodwill and Other Intangible Assets (Tables) Network

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461 Implied Table Table

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462 Text block [abstract] Abstract ln:TextBlockAbstract
463 Changes in Goodwill and Other Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
464 Contractual Commitments for Acquisition of Goodwill and Other Intangible Assets Concept (Text Block (HTML)) For Period ln:DisclosureOfCommitmentExplanatory
465 1048 - Disclosure - Impairment (Tables) Network

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466 Implied Table Table

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467 Text block [abstract] Abstract ln:TextBlockAbstract
468 Carrying Amount of Goodwill Allocated to Each of Cash Generating Units for Impairment Testing Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory
469 Significant Assumptions Used in value in Use Calculations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory
470 1049 - Disclosure - Provisions (Tables) Network

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471 Implied Table Table

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472 Text block [abstract] Abstract ln:TextBlockAbstract
473 Changes in Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
474 1050 - Disclosure - Income Taxes (Tables) Network

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475 Implied Table Table

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476 Text block [abstract] Abstract ln:TextBlockAbstract
477 Current and Deferred Taxes Related to Each Component of Other Comprehensive Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
478 Current and Deferred Taxes Related to Items Directly Charged or Credited to Equity Concept (Text Block (HTML)) For Period ln:DisclosureOfIncomeTaxesRecognizedDirectlyInEquityExplanatory
479 Movements in Deferred Tax Assets and Deferred Tax Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
480 Deferred Tax Assets and Liabilities Reconcile to Amounts Presented in Consolidated Statements of Financial Position Concept (Text Block (HTML)) For Period ln:DisclosureOfDeferredTaxAssetsAndLiabilitiesReconcileToAmountsPresentedInConsolidatedStatementsOfFinancialPositionExplanatory
481 Breakdown of Deductible Temporary Differences, Unused Tax Losses and Unused Tax Credits for which No Deferred Tax Assets Recognized Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
482 Breakdown of Unused Tax Losses by Expiry Date for which No Deferred Tax Assets Recognized Concept (Text Block (HTML)) For Period ln:DisclosureOfUnrecognizedTaxLossesByExpiryDateExplanatory
483 Breakdown of Unused Tax Credits by Expiry Date for which No Deferred Tax Assets Recognized Concept (Text Block (HTML)) For Period ln:DisclosureOfUnusedTaxCreditsByExpiryDateExplanatory
484 Components of Income Tax Benefits/(Expenses) Concept (Text Block (HTML)) For Period ln:DisclosureOfIncomeTaxExpenseBenefitExplanatory
485 Reconciliation of Income Tax Expenses Calculated by Applying Statutory Tax Rates to Actual Tax Expenses Concept (Text Block (HTML)) For Period ln:DisclosureOfReconciliationOfEffectiveAndApplicableIncomeTaxExpensesExplanatory
486 1051 - Disclosure - Financial Assets and Financial Liabilities (Tables) Network

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487 Implied Table Table

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488 Text block [abstract] Abstract ln:TextBlockAbstract
489 Carrying Amounts and Fair Value of Financial Instruments, Except for Cash and Cash Equivalents, by Line Item in Consolidated Statements of Financial Position and by Category as Defined in IAS39 Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory
490 1052 - Disclosure - Employment Benefits (Tables) Network

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491 Implied Table Table

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492 Text block [abstract] Abstract ln:TextBlockAbstract
493 Liabilities for Defined Benefit Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
494 Expenses Related to Defined Benefit Plans Recognized in Consolidated Statements of Profit or Loss as Operating Expenses Concept (Text Block (HTML)) For Period ln:DisclosureOfDefinedBenefitPlansExpenseRecognisedInIncomeStatementExplanatory
495 Movements in Present Value of Defined Benefit Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
496 Movements in the Plan Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
497 Principal Actuarial Assumptions Used for Measuring Defined Benefit Expenses and Defined Benefit Obligation Concept (Text Block (HTML)) For Period ln:DisclosureOfPrincipalActuarialAssumptionsExplanatory
498 Sensitivity Analysis for Impact of Changes in Certain Significant Actuarial Assumptions Leaving All Other Assumptions Constant Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
499 Estimated Future Benefit Payments within Ten Years from December 31, 2018 Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory
500 1053 - Disclosure - Leases-Group as Lessee (Tables) Network

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501 Implied Table Table

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502 Text block [abstract] Abstract ln:TextBlockAbstract
503 Future Minimum Lease Payment under Non-cancelable Operating Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
504 1054 - Disclosure - Leases-Group as Lessor (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfMinimumCommittedAnnualRentalsExplanatoryTables
505 Implied Table Table

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506 Text block [abstract] Abstract ln:TextBlockAbstract
507 Future Minimum Rentals Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorExplanatory
508 1055 - Disclosure - Issued Capital and Reserves (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatoryTables
509 Implied Table Table

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510 Text block [abstract] Abstract ln:TextBlockAbstract
511 Movements of Authorized Shares and Shares Issued Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
512 Movements in Share Premium Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
513 Summary of Movement of Treasury Shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTreasurySharesExplanatory
514 1056 - Disclosure - Supplemental Cash Flow Information (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCashFlowStatementExplanatoryTables
515 Statement [table] Table

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516 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
517 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
518 LINE BIZ Plus Ltd. (subsequently renamed to RABBIT LINE PAY COMPANY LIMITED) [member] Member ln:LINEBIZPlusLtdMember
519 Bonsai Garage Corporation [member] Member ln:BonsaiGarageCorporationMember
520 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
521 LINE Games Corporation [member] Member ln:LINEGamesCorporationMember
522 Camera Application Business (was operated by a wholly owned subsidiary, LINE Plus Corporation) [Member] Member ln:CameraApplicationBusinessMember
523 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
524 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
525 Movement on liabilities from financing activities [member] Member ln:MovementOnLiabilitiesFromFinancingActivitiesMember
526 Material non-cash transactions [member] Member ln:MaterialNoncashTransactionsMember
527 Statement [Line Items] LineItems ln:StatementLineItems
528 Assets, Liabilities and Other Items of Subsidiaries and Businesses Transferred in Connection with Deconsolidation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesExplanatory
529 Movements of Liabilities From Financing Activities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
530 1057 - Disclosure - Revenue from Contracts with Customers (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfRevenueFromContractsWithCustomersExplanatoryTables
531 Implied Table Table

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532 Text block [abstract] Abstract ln:TextBlockAbstract
533 Summary of Consolidated statement of Profit or Loss Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory
534 Summary of Trade and Other Receivables, Contract and Contract Liabilities Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfEffectThatTimingOfSatisfactionOfPerformanceObligationsAndTypicalTimingOfPaymentHaveOnContractAssetsAndContractLiabilitiesExplanatory
535 Summary of Revenue Recognized Concept (Text Block (HTML)) For Period ln:DisclosureOfRevenueThatWasIncludedInContractLiabilityExplanatory
536 1058 - Disclosure - Other Income and Expenses (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfOtherIncomeExpenseExplanatoryTables
537 Implied Table Table

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 implied:Table
538 Text block [abstract] Abstract ln:TextBlockAbstract
539 Summary of Other Operating Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
540 Summary of Other Operating Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory
541 Summary of Other Non-Operating Income Concept (Text Block (HTML)) For Period ln:DisclosureOfOtherNonOperatingIncomeExplanatory
542 Summary of Other Non-Operating Expenses Concept (Text Block (HTML)) For Period ln:DisclosureOfNonOperatingExpensesExplanatory
543 1059 - Disclosure - Discontinued Operations (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatoryTables
544 Implied Table Table

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 implied:Table
545 Text block [abstract] Abstract ln:TextBlockAbstract
546 Aggregated Results of Discontinued Operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDiscontinuedOperationsExplanatory
547 Cash Flow Information of Discontinued Operations Concept (Text Block (HTML)) For Period ln:DisclosureOfCashFlowInformationOfDiscontinuedOperationsExplanatory
548 1060 - Disclosure - Earnings per Share (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEarningsPerShareExplanatoryTables
549 Implied Table Table

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 implied:Table
550 Text block [abstract] Abstract ln:TextBlockAbstract
551 Profit or Loss and Weighted Average Number of Shares Used in Calculation of Earnings per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
552 1061 - Disclosure - Financial Risk Management (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatoryTables
553 Statement [table] Table

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554 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
555 Risks [member] Member ifrs-full:TypesOfRisksMember
556 Liquidity risk [member] Member ifrs-full:LiquidityRiskMember
557 Currency risk [member] Member ifrs-full:CurrencyRiskMember
558 Interest rate risk [member] Member ifrs-full:InterestRateRiskMember
559 Statement [Line Items] LineItems ln:StatementLineItems
560 Maximum Amounts of Possible Financial Loss Due to Credit Risk Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExposureExplanatory
561 Summary of Loss Allowance for Trade and Other Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionMatrixExplanatory
562 Movement in Allowance for Doubtful Accounts Attributable to Trade and Other Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAllowanceForCreditLossesExplanatory
563 Book Values of Financial Liabilities Based on Remaining Maturities Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
564 Line of Credit Concept (Text Block (HTML)) For Period ln:DisclosureOfLineOfCreditExplanatory
565 Exposure to Market Risks Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMarketRiskExplanatory
566 Sensitivity Analysis for Each Type of Market Risk Concept (Text Block (HTML)) For Period ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
567 Summary of Capital Management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
568 1062 - Disclosure - Fair Value Measurements (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfFairValueMeasurementExplanatoryTables
569 Statement [table] Table

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570 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
571 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
572 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
573 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
574 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
575 Put option liabilities [member] Member ln:PutOptionLiabilitiesMember
576 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
577 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
578 Available-for-sale financial assets [Member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
579 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
580 Measurement [axis] Axis ifrs-full:MeasurementAxis
581 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
582 Fair Value Measurement on a Recurring Basis [Member] Member ifrs-full:RecurringFairValueMeasurementMember
583 Not measured at fair values in Consolidated Statements of Financial Position but for which fair values are disclosed [Member] Member ifrs-full:NotMeasuredAtFairValueInStatementOfFinancialPositionButForWhichFairValueIsDisclosedMember
584 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
585 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
586 Level 3 [Member] Member ifrs-full:Level3OfFairValueHierarchyMember
587 Statement [Line Items] LineItems ln:StatementLineItems
588 Fair Value Measurements of Assets by Fair Value Hierarchy Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
589 Quantitative Information Regarding Valuation Technique and Significant Unobservable Inputs Used in Measuring Fair Value of Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory
590 1063 - Disclosure - Share-Based Payments (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfSharebasedPaymentArrangementsExplanatoryTables
591 Statement [table] Table

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 ln:StatementTable
592 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
593 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
594 E S O P equity settled [member] Member ln:ESOPEquitySettledMember
595 E S O P cash settled [member] Member ln:ESOPCashSettledMember
596 Statement [Line Items] LineItems ln:StatementLineItems
597 Number and Weighted Average Exercise Prices of, and Movements in, Outstanding Stock Options on a Per-common-share Basis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
598 Summary of Exercise Price and Number for Shares of Options Outstanding Concept (Text Block (HTML)) For Period ln:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementsExplanatory
599 Inputs to Models Used for Deriving Fair Value of Stock Options Granted Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory
600 Expenses Recognized in Connection with Share-Based Payments Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfEffectOfSharebasedPaymentsOnProfitOrLoss
601 Number and Weighted Average Exercise Prices of, and Movements in, Outstanding Stock Other Options on a Per-common-share Basis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
602 1064 - Disclosure - Related Party Transactions (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfRelatedPartyExplanatoryTables
603 Implied Table Table

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 implied:Table
604 Text block [abstract] Abstract ln:TextBlockAbstract
605 Significant Related Party Transactions and Outstanding Balances with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
606 Total Compensation of Key Management Personnel Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
607 1065 - Disclosure - Business Combinations (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfBusinessCombinationsExplanatoryTables
608 Statement [table] Table

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 ln:StatementTable
609 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
610 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
611 M.T. Burn Corporation [Member] Member ln:MTBurnCorporationMember
612 Five Inc [member] Member ln:FiveIncMember
613 Next floor group [member] Member ln:NextFloorGroupMember
614 Statement [Line Items] LineItems ln:StatementLineItems
615 Fair Values of Identifiable Assets and Liabilities at Date of Acquisition Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
616 Analysis of Cash Flows on Acquisition Concept (Text Block (HTML)) For Period ln:DisclosureOfDetailedInformationAboutAnalysisOfCashFlowsOnAcquisitionExplanatory
617 1066 - Disclosure - Principal Subsidiaries (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfInterestsInSubsidiariesExplanatoryTables
618 Statement [table] Table

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 ln:StatementTable
619 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
620 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
621 M T Burn Inc [member] Member ln:MTBurnIncMember
622 Gatebox Inc [member] Member ln:GateboxIncMember
623 LINE Company (Thailand) Limited [member] Member ln:LINECompanyThailandLimitedMember
624 Statement [Line Items] LineItems ln:StatementLineItems
625 Information on Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
626 Summarized Financial Information for the Subsidiaries Which the Group Recognize Non-controlling Interest Concept (Text Block (HTML)) For Period ln:DisclosureOfFinancialInformationExplanatory
627 1067 - Disclosure - Investments in Associates and Joint Ventures (Tables) Network

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 http://linecorp.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatoryTables
628 Statement [table] Table

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629 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
630 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
631 Snow Corporation [member] Member ln:SnowCorporationMember
632 Aggregated individually immaterial associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
633 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
634 Statement [Line Items] LineItems ln:StatementLineItems
635 Details of Investments in Significant Associates and Joint Ventures Concept (Text Block (HTML)) For Period ln:DisclosureOfSignificantInvestmentsInAssociatesAndJointVenturesExplanatory
636 Summary of Financial Information on Investment in Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
637 Summary of Financial Information on Investment in Joint Ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfJointVenturesExplanatory
638 1068 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesAdditionalInformation
639 Disclosure of performance obligations [table] Table

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640 Performance obligations [axis] Axis ifrs-full:PerformanceObligationsAxis
641 Performance obligations [member] Member ifrs-full:PerformanceObligationsMember
642 Server Hosting Services [member] Member ln:ServerHostingServicesMember
643 Payment Processing Services [member] Member ln:PaymentProcessingServicesMember
644 Third Party Games [member] Member ln:ThirdPartyGamesMember
645 Internally developed games and applications [member] Member ln:InternallyDevelopedGamesAndApplicationsMember
646 LINE Stickers and Creator Stickers [Member] Member ln:StickersMember
647 Range [axis] Axis ifrs-full:RangeAxis
648 Ranges [member] Member ifrs-full:RangesMember
649 Bottom of Range [member] Member ifrs-full:BottomOfRangeMember
650 Top of Range [member] Member ifrs-full:TopOfRangeMember
651 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
652 New IFRSs [member] Member ifrs-full:NewIFRSsMember
653 IFRS 16 [member] Member ln:IFRS16Member
654 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
655 Currently stated [member] Member ifrs-full:RestatedMember
656 Increase (decrease) due to application of IFRS 16 [member] Member ln:IncreaseDecreaseDueToApplicationOfIFRS16Member
657 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
658 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
659 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
660 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
661 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
662 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
663 Loans and receivables [Member] Member ifrs-full:LoansAndReceivablesCategoryMember
664 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
665 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
666 Private Equity and Other Financial Instruments [Member] Member ln:PrivateEquityInvestmentsMember
667 Redeemable preferred stocks of unlisted companies [member] Member ln:RedeemablePreferredStocksOfUnlistedCompaniesMember
668 Listed Equity Securities, Private Equity And Other Financial Instruments [member] Member ln:ListedEquitySecuritiesPrivateEquityAndOtherFinancialInstrumentsMember
669 Corporate bonds and other debt instruments [Member] Member ifrs-full:CorporateLoansMember
670 Partnership Investments [member] Member ln:PartnershipInvestmentsMember
671 Time deposits [Member] Member ln:TimeDepositsMember
672 Short-term Loans [member] Member ln:ShortTermLoansMember
673 Guarantee deposits [Member] Member ln:GuaranteeDepositsMember
674 Office security deposits [Member] Member ln:OfficeSecurityDepositsMember
675 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
676 Japanese government bonds [Member] Member ln:JapaneseGovernmentBondsMember
677 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
678 Customers [member] Member ifrs-full:MajorCustomersMember
679 LINE Stickers, Creator Stickers and Emoji [member] Member ln:LineStickersCreatorStickersAndEmojiMember
680 LINE Sponsored Stickers [member] Member ln:LineSponsoredStickersMember
681 LINE Point Ads [member] Member ln:LinePointAdMember
682 LINE advertising and Portal advertising [member] Member ln:LineAdvertisingAndPortalAdvertisingMember
683 Disclosure of performance obligations [line items] LineItems ifrs-full:DisclosureOfPerformanceObligationsLineItems
684 Gain loss on purchase, sales or cancellation of treasury shares Concept (Monetary) For Period Credit ln:GainLossOnPurchaseSalesOrCancellationOfTreasuryShares
685 Development expenditure capitalized Concept (Monetary) For Period Debit ln:CapitalizedDevelopmentExpenditure
686 Estimated period of recognizing revenues for each type of communication and content sales services Concept (Text/String) For Period ifrs-full:ExplanationOfWhenEntityExpectsToRecogniseTransactionPriceAllocatedToRemainingPerformanceObligationsAsRevenue
687 Period of recognizing revenue attributable to the post-termination-announcement performance obligations Concept (xbrli:durationItemType) For Period ln:PeriodOfRecognizingRevenueAttributableToThePostTerminationAnnouncementPerformanceObligations
688 Payment term for customers Concept (xbrli:durationItemType) For Period ln:CustomerPaymentTerm
689 Non-cancellable operating leases commitments Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
690 Right-of-use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
691 Lease liabilities Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities
692 Expenses related to operating leases Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
693 Depreciation expenses of the right-of-use assets and interest expenses on lease liabilities Concept (Monetary) For Period Debit ln:DepreciationExpensesOfRightofuseAssetsAndInterestExpensesOnLeaseLiabilities
694 Expected increase (decrease) in cash flows from operating activities Concept (Monetary) For Period Debit ln:ExpectedIncreaseDecreaseInCashFlowsFromOperatingActivities
695 Expected Increase (decrease) in cash flows from financing activities Concept (Monetary) For Period Debit ln:ExpectedIncreaseDecreaseInCashFlowsFromFinancingActivities
696 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
697 Profit from operating activities Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
698 Sales commission expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
699 Reclassification from available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:ReclassificationOutOfAvailableforsaleFinancialAssets
700 Available-for-sale financial assets reclassified to financial assets at fair value through profit or loss Concept (Monetary) For Period Debit ifrs-full:ReclassificationIntoFinancialAssetsAtFairValueThroughProfitOrLoss
701 Cumulative loss reclassified from accumulated other comprehensive income to accumulated deficit Concept (Monetary) For Period Credit ifrs-full:FairValueGainsLossesOnFinancialAssetsReclassifiedOutOfAvailableforsaleFinancialAssetsNotRecognisedInOtherComprehensiveIncome
702 Cumulative loss reclassified from accumulated deficit to accumulated other comprehensive income Concept (Monetary) For Period Credit ifrs-full:FairValueGainsLossesOnFinancialAssetsReclassifiedOutOfAvailableforsaleFinancialAssetsRecognisedInOtherComprehensiveIncome
703 Reclassification from loans and receivables Concept (Monetary) For Period Credit ifrs-full:ReclassificationOutOfLoansAndReceivables
704 Fair value gains and related tax effects Concept (Monetary) For Period Debit ln:IncreaseDecreaseInProvisionForDebtInstrumentsAtFVOCI
705 Reclassification from held-to-maturity financial assets to financial assets at measured at amortized cost Concept (Monetary) For Period Credit ifrs-full:ReclassificationOutOfHeldtomaturityInvestments
706 Impairment of available-for-sale financial asset description Concept (Text/String) For Period ln:ImpairmentOfAvailableforsaleFinancialAssetDescription
707 1069 - Disclosure - Significant Accounting Policies - Estimated Useful Lives for Property and Equipment (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesEstimatedUsefulLivesForPropertyAndEquipment
708 Disclosure of performance obligations [table] Table

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 ifrs-full:DisclosureOfPerformanceObligationsTable
709 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
710 Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
711 Equipment (mainly consist of servers) [member] Member ifrs-full:ComputerEquipmentMember
712 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
713 Others [member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
714 Range [axis] Axis ifrs-full:RangeAxis
715 Ranges [member] Member ifrs-full:RangesMember
716 Bottom of Range [member] Member ifrs-full:BottomOfRangeMember
717 Top of Range [member] Member ifrs-full:TopOfRangeMember
718 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
719 Estimated useful lives for property and equipment Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
720 1070 - Disclosure - Significant Accounting Policies - Estimated Useful Lives for Intangible Assets with Finite Lives (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesEstimatedUsefulLivesForIntangibleAssetsWithFiniteLives
721 Disclosure of performance obligations [table] Table

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*

 ifrs-full:DisclosureOfPerformanceObligationsTable
722 Range [axis] Axis ifrs-full:RangeAxis
723 Ranges [member] Member ifrs-full:RangesMember
724 Bottom of Range [member] Member ifrs-full:BottomOfRangeMember
725 Top of Range [member] Member ifrs-full:TopOfRangeMember
726 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
727 Intangible assets [Member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
728 Software [member] Member ifrs-full:ComputerSoftwareMember
729 Customer relationships [member] Member ifrs-full:CustomerrelatedIntangibleAssetsMember
730 Domain Name [member] Member ln:DomainNameMember
731 Other intangible assets [member] Member ifrs-full:OtherIntangibleAssetsMember
732 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
733 Estimated useful lives for the intangible assets with finite lives Concept (Text/String) For Period ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
734 1071 - Disclosure - Significant Accounting Policies - Schedule of Opening Balance of Accumulated Deficit (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesScheduleOfOpeningBalanceOfAccumulatedDeficit
735 Disclosure of Retained Earnings [table] Table

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*

 ln:DisclosureOfRetainedEarningsTable
736 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
737 Currently stated [member] Member ifrs-full:RestatedMember
738 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
739 Retrospective application through equity adjustment on initial application [axis] Axis ln:RetrospectiveApplicationThroughEquityAdjustmentOnInitialApplicationAxis
740 Retrospective application through equity adjustment on initial application [member] Member ln:RetrospectiveApplicationThroughEquityAdjustmentOnInitialApplicationMember
741 Remeasurement [member] Member ln:RemeasurementMember
742 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
743 Customers [member] Member ifrs-full:MajorCustomersMember
744 LINE Stickers, Creator Stickers and Emoji [member] Member ln:LineStickersCreatorStickersAndEmojiMember
745 LINE Sponsored Stickers [member] Member ln:LineSponsoredStickersMember
746 LINE Point Ads [member] Member ln:LinePointAdMember
747 Other [member] Member ln:OtherMember
748 Disclosure of Retained Earnings [line items] LineItems ln:DisclosureOfRetainedEarningsLineItems
749 Accumulated deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
750 1072 - Disclosure - Significant Accounting Policies - Schedule of Adjustments Made to Line Items Presented on the Financial Statements due to Application of IFRS 15 (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesScheduleOfAdjustmentsMadeToLineItemsPresentedOnTheFinancialStatementsDueToApplicationOfIFRS15
751 Disclosure of initial application of standards or interpretations [table] Table

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752 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
753 Currently stated [member] Member ifrs-full:RestatedMember
754 IAS 18 and Other [member] Member ln:IAS18AndOtherMember
755 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
756 New IFRSs [member] Member ifrs-full:NewIFRSsMember
757 Retrospective application through equity adjustment on initial application [axis] Axis ln:RetrospectiveApplicationThroughEquityAdjustmentOnInitialApplicationAxis
758 Retrospective application through equity adjustment on initial application [member] Member ln:RetrospectiveApplicationThroughEquityAdjustmentOnInitialApplicationMember
759 Reclassification upon adoption of IFRS 15 [member] Member ln:ReclassificationUponAdoptionOfIFRS15Member
760 Remeasurement [member] Member ln:RemeasurementMember
761 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
762 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
763 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
764 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentNonfinancialAssets
765 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
766 Other financial liabilities, current Concept (Monetary) As Of Credit ifrs-full:OtherCurrentFinancialLiabilities
767 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
768 Advances received Concept (Monetary) As Of Credit ifrs-full:CurrentAdvances
769 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
770 Provisions, current Concept (Monetary) As Of Credit ifrs-full:OtherShorttermProvisions
771 Accumulated deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
772 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
773 Non-controllinginterests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
774 1073 - Disclosure - Significant Accounting Policies - Schedule of Adjustments Made to Line Items Presented on Profit or Loss due to Application of IFRS 15 (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesScheduleOfAdjustmentsMadeToLineItemsPresentedOnProfitOrLossDueToApplicationOfIFRS15
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778 IAS 18 and Other [member] Member ln:IAS18AndOtherMember
779 Remeasurement [member] Member ln:RemeasurementMember
780 New IFRSs [member] Member ifrs-full:NewIFRSsMember
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782 Revenue and other operating income Abstract ifrs-full:RevenueAbstract
783 Revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
784 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
785 Revenue and other operating income total Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
786 Operating expenses Abstract ifrs-full:ExpenseByNatureAbstract
787 Payment processing and licensing expenses Concept (Monetary) For Period Debit ln:PaymentProcessingAndLicensingExpenses
788 Sales commission expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
789 Employee compensation expenses Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
790 Marketing expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
791 Infrastructure and communication expenses Concept (Monetary) For Period Debit ln:InfrastructureAndCommunicationExpenses
792 Outsourcing and other service expenses Concept (Monetary) For Period Debit ifrs-full:ServicesExpense
793 Depreciation and amortization expenses Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
794 Other operating expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
795 Operating expenses total Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
796 Profit from operating activities Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
797 Profit before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
798 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
799 Loss for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
800 Loss for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
801 Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
802 The shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
803 Non-controllinginterests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
804 Earnings per share Abstract ifrs-full:BasicAndDilutedEarningsPerShareAbstract
805 Basic (loss)/profit for the year attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
806 Diluted (loss)/ profit for the year attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
807 Earnings per share from continuing operations Abstract ln:BasicAndDilutedEarningsPerShareContinuingOperationsAbstract
808 Basic (loss)/ profit from continuing operations attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
809 Diluted (loss)/profit from continuing operations attributable to the shareholders of the Company Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
810 1074 - Disclosure - Significant Accounting Policies - Schedule of Classification of Financial Assets Under IFRS9 (Detail) Network

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

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814 Fair value [Member] Member ifrs-full:AtFairValueMember
815 Types of financial assets [axis] Axis ifrs-full:TypesOfFinancialAssetsAxis
816 Financial assets, type [member] Member ifrs-full:FinancialAssetsTypeMember
817 Financial assets/liabilities at fair value through profit or loss [member] Member ln:FinancialAssetsLiabilitiesAtFairValueThroughProfitOrLossMember
818 Financial assets/liabilities at FVOCI [member] Member ln:FinancialAssetsOrLiabilitiesAtFVOCIMember
819 Financial assets/liabilities at amortized cost [member] Member ln:FinancialAssetsOrLiabilitiesAtAmortizedCostMember
820 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
821 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
822 Loans and receivables [Member] Member ifrs-full:LoansAndReceivablesCategoryMember
823 Available-for-sale financial assets [Member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
824 Office security deposits [Member] Member ln:OfficeSecurityDepositsMember
825 Held-to-maturity investments [Member] Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
826 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
827 Other [Member] Member ln:OtherFinancialAssetMember
828 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
829 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
830 Time deposits [Member] Member ln:TimeDepositsMember
831 Short-term Loans [member] Member ln:ShortTermLoansMember
832 Corporate bonds and other debt instruments [Member] Member ln:CorporateBondsAndOtherDebtInstrumentsMember
833 Guarantee deposits [Member] Member ln:GuaranteeDepositsMember
834 Office security deposits [Member] Member ln:OfficeSecurityDepositsMember
835 Conversion right and redemption right of preferred stock [member] Member ln:ConversionRightAndRedemptionRightOfPreferredStockMember
836 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
837 Currently stated [member] Member ifrs-full:RestatedMember
838 IAS 39 [member] Member ln:IAS39Member
839 IFRS9 [member] Member ln:IFRS9Member
840 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
841 Other provisions [member] Member ifrs-full:OtherProvisionsMember
842 Provisions [member] Member ln:ProvisionsMember
843 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
844 New IFRSs [member] Member ifrs-full:NewIFRSsMember
845 Impact of adopting IFRS 9 [member] Member ln:ImpactOfAdoptingIFRS9Member
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847 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
848 Other financial assets, current Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
849 Other financial assets, non-current Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
850 1075 - Disclosure - Significant Accounting Policies - Schedule of Classification of Financial Liabilities Under IFRS9 (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesScheduleOfClassificationOfFinancialLiabilitiesUnderIFRS9
851 Disclosure of detailed information about financial instruments [table] Table

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854 Financial assets/liabilities at fair value through profit or loss [member] Member ln:FinancialAssetsLiabilitiesAtFairValueThroughProfitOrLossMember
855 Financial assets/liabilities at amortized cost [member] Member ln:FinancialAssetsOrLiabilitiesAtAmortizedCostMember
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857 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
858 Financial liabilities measured at amortized cost [Member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
859 Financial liabilities at fair value through profit or loss, category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
860 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
861 Currently stated [member] Member ifrs-full:RestatedMember
862 IAS 39 [member] Member ln:IAS39Member
863 IFRS9 [member] Member ln:IFRS9Member
864 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
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866 Deposits received [Member] Member ln:DepositsFromCustomersMember
867 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
868 Others [Member] Member ln:OtherFinancialLiabilityMember
869 Office security deposits received under sublease agreement [Member] Member ln:OfficeSecurityDepositsReceivedUnderSubleaseAgreementMember
870 Put option liabilities [member] Member ln:PutOptionLiabilitiesMember
871 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
872 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
873 Other financial liabilities, current Concept (Monetary) As Of Credit ifrs-full:OtherCurrentFinancialLiabilities
874 Other financial liabilities, non-current Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentFinancialLiabilities
875 1076 - Disclosure - Significant Accounting Policies - Summary of Accumulated Deficit and Accumulated Other Comprehensive Income (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSignificantAccountingPoliciesSummaryOfAccumulatedDeficitAndAccumulatedOtherComprehensiveIncome
876 Disclosure of analysis of other comprehensive income by item [table] Table

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877 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
878 Shareholder's equity [Member] Member ifrs-full:EquityMember
879 Accumulated deficit [Member] Member ifrs-full:RetainedEarningsMember
880 Accumulated other comprehensive income [member] Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
881 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
882 Currently stated [member] Member ifrs-full:RestatedMember
883 IAS 39 [member] Member ln:IAS39Member
884 IFRS9 [member] Member ln:IFRS9Member
885 Reserves within equity [axis] Axis ifrs-full:ReservesWithinEquityAxis
886 Other [Member] Member ifrs-full:OtherReservesMember
887 Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member] Member ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember
888 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
889 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
890 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
891 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
892 Disclosure of analysis of other comprehensive income by item [line items] LineItems ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems
893 Balance of accumulated deficit and accumulated OCI Concept (Monetary) As Of Credit ifrs-full:Equity
894 Reclassification from available-for-sale financial assets to financial assets at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:FairValueGainsLossesOnFinancialAssetsReclassifiedOutOfAvailableforsaleFinancialAssetsNotRecognisedInOtherComprehensiveIncome
895 Transfer of impairment losses arising from reclassification of available-for-sale financial assets to financial assets at FVOCI and recognized previously in profit or loss Concept (Monetary) For Period Credit ifrs-full:FairValueGainsLossesOnFinancialAssetsReclassifiedOutOfAvailableforsaleFinancialAssetsRecognisedInOtherComprehensiveIncome
896 Fair value measurement of financial assets classified from loans and receivables to financial assets at FVOCI as of January 1, 2018 Concept (Monetary) For Period Credit ln:FairValueGainsLossesOnFinancialAssetsReclassifiedOutOfLoansAndReceivablesFinancialAssetsRecognizedInOtherComprehensiveIncome
897 Increase in provision for debt instruments at FVOCI Concept (Monetary) For Period Debit ln:IncreaseDecreaseInProvisionForDebtInstrumentsAtFVOCI
898 Adjustment to shareholders' equity from adoption of IFRS 9 Concept (Monetary) For Period Debit ln:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
899 1077 - Disclosure - Segment Information - Additional Information (Detail) Network

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900 Implied Table Table

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903 Information about major customers Concept (Text/String) For Period ifrs-full:InformationAboutMajorCustomers
904 1078 - Disclosure - Segment Information - Reconciliation of Segment Profit to Profit Before Tax from Continuing Operations (Detail) Network

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905 Disclosure of operating segments [table] Table

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915 Revenue from external customers Concept (Monetary) For Period Credit ifrs-full:Revenue
916 Segment profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
917 Depreciation and amortization expenses Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
918 Financial income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
919 Financial costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
920 Share of loss of associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
921 Loss on foreign currency transactions, net Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
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925 1079 - Disclosure - Segment Information - Summary of Revenue Recognized (Detail) Network

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930 Communication, content, and others [member] Member ln:CommunicationContentAndOthersMember
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932 Strategic business [member] Member ln:StrategicBusinessMember
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936 Account advertising [member] Member ln:AccountAdvertisingMember
937 Other advertising [member] Member ln:OtherAdvertisingMember
938 Communication [member] Member ln:CommunicationMember
939 Content [member] Member ln:ContentMember
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943 Revenues recognized Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfAdvertisingServices
944 Revenues recognized Concept (Monetary) For Period Credit ifrs-full:Revenue
945 1080 - Disclosure - Segment Information - Revenues from External Customers and Non-current Operating Assets Classified by Country or Region (Detail) Network

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950 Taiwan [Member] Member country:TW
951 Others [Member] Member ln:OtherCountriesMember
952 Korea [Member] Member country:KR
953 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
954 Revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
955 Non-current operating assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOtherThanFinancialInstrumentsDeferredTaxAssetsPostemploymentBenefitAssetsAndRightsArisingUnderInsuranceContracts
956 1081 - Disclosure - Cash and Cash Equivalents - Breakdown of Cash and Cash Equivalents (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureCashAndCashEquivalentsBreakdownOfCashAndCashEquivalents
957 Implied Table Table

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959 Cash on hand Concept (Monetary) As Of Debit ifrs-full:CashOnHand
960 Demand deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
961 Total cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
962 1082 - Disclosure - Trade and Other Receivables - Summary of Trade and Other Receivables (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureTradeAndOtherReceivablesSummaryOfTradeAndOtherReceivables
963 Disclosure of financial assets [table] Table

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967 Allowance for doubtful account/Loss allowance [Member] Member ifrs-full:AllowanceForCreditLossesMember
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969 Total trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
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971 1083 - Disclosure - Inventories - Summary of Inventories (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureInventoriesSummaryOfInventories
972 Implied Table Table

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976 1084 - Disclosure - Inventories - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureInventoriesAdditionalInformation
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980 Inventory valuation losses recognized from continuing operations Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
981 1085 - Disclosure - Property and Equipment - Changes in Property and Equipment (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosurePropertyAndEquipmentChangesInPropertyAndEquipment
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985 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
986 Equipment (mainly consist of servers) [member] Member ifrs-full:ComputerEquipmentMember
987 Construction-in-progress [member] Member ifrs-full:ConstructionInProgressMember
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998 Acquisition through business combinations Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
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1003 1086 - Disclosure - Property and Equipment - Contractual Commitments for Acquisition of Property and Equipment (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosurePropertyAndEquipmentContractualCommitmentsForAcquisitionOfPropertyAndEquipment
1004 Implied Table Table

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 implied:Table
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1007 1087 - Disclosure - Property and Equipment - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosurePropertyAndEquipmentAdditionalInformation
1008 Disclosure of detailed information about property, plant and equipment [table] Table

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 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
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1017 1088 - Disclosure - Goodwill and Other Intangible Assets - Changes in Goodwill and Other Intangible Assets (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInGoodwillAndOtherIntangibleAssets
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 http://linecorp.com/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInGoodwillAndOtherIntangibleAssetsParenthetical
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1047 Gatebox Inc [member] Member ln:GateboxIncMember
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1050 Software [member] Member ifrs-full:ComputerSoftwareMember
1051 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
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1053 Licences [member] Member ifrs-full:LicencesMember
1054 Domain Name [member] Member ln:DomainNameMember
1055 Trademark and Patented Technology [member] Member ln:TrademarkAndPatentedTechnologyMember
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1057 Remaining useful life Concept (Text/String) For Period ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
1058 Intangible assets acquired Concept (Monetary) As Of Debit ifrs-full:IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate
1059 Carrying amount, Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1060 1090 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsAdditionalInformation
1061 Implied Table Table

*

*

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1063 Research and development expenditure Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
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*

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1068 Intangible assets [member] Member ln:IntangibleAssetMember
1069 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1070 Contractual commitments for acquisition of intangible assets Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfIntangibleAssets
1071 1092 - Disclosure - Impairment - Additional Information (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureImpairmentAdditionalInformation
1072 Disclosure of information for cash-generating units [table] Table

*

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1075 Core business [member] Member ln:CoreBusinessMember
1076 Strategic business [member] Member ln:StrategicBusinessMember
1077 Legal Entity [Axis] Axis dei:LegalEntityAxis
1078 Entity [Domain] Member dei:EntityDomain
1079 Kiwiple [member] Member ln:KiwipleMember
1080 LINE Games Global Gateway L.P. [member] Member ln:LineGamesGlobalGatewayMember
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1083 Number of operating segments Concept (Integer) For Period ln:NumberOfOperatingSegments1
1084 Number of reportable segments Concept (Decimal) For Period ln:NumberOfReportableSegment
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1086 Impairment loss of other intangible assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
1087 Impairment loss of property and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1088 1093 - Disclosure - Impairment - Carrying Amount of Goodwill Allocated to Each of Cash Generating Units for Impairment Testing (Detail) Network

*

*

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1089 Disclosure of information for cash-generating units [table] Table

*

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1093 Strategic business [member] Member ln:StrategicBusinessMember
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1095 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1096 LINE business and portal CGU [member] Member ln:LineBusinessAndPortalCGUMember
1097 Core business CGU [member] Member ln:CoreBusinessCGUMember
1098 Friends business CGU [member] Member ln:FriendsBusinessCGUMember
1099 Fintech business CGU [member] Member ln:FintechBusinessCGUMember
1100 E-Commerce business CGU [member] Member ln:ECommerceBusinessMember
1101 AI business CGU [member] Member ln:AIBusinessMember
1102 Disclosure of information for cash-generating units [line items] LineItems ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
1103 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1104 1094 - Disclosure - Impairment - Significant Assumptions Used in Value in Use Calculations (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureImpairmentSignificantAssumptionsUsedInValueInUseCalculations
1105 Disclosure of information for cash-generating units [table] Table

*

*

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1107 Segments [member] Member ifrs-full:SegmentsMember
1108 Core business [member] Member ln:CoreBusinessMember
1109 Strategic business [member] Member ln:StrategicBusinessMember
1110 Cash-generating units [axis] Axis ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1111 Entity's total for cash-generating units [member] Member ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1112 LINE business and portal CGU [member] Member ln:LineBusinessAndPortalCGUMember
1113 Core business CGU [member] Member ln:CoreBusinessCGUMember
1114 Friends business CGU [member] Member ln:FriendsBusinessCGUMember
1115 Fintech business CGU [member] Member ln:FintechBusinessCGUMember
1116 E-Commerce business CGU [member] Member ln:ECommerceBusinessMember
1117 AI business CGU [member] Member ln:AIBusinessMember
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1120 Terminal growth rate Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1121 1095 - Disclosure - Provisions - Changes in Provisions (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureProvisionsChangesInProvisions
1122 Disclosure of other provisions [table] Table

*

*

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1125 Restoration obligations for operating lease properties [member] Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1126 Promotional virtual credits reserve [member] Member ifrs-full:OnerousContractsProvisionMember
1127 Other [member] Member ifrs-full:MiscellaneousOtherProvisionsMember
1128 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
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1130 Arising during the year Concept (Monetary) For Period Credit ifrs-full:NewProvisionsOtherProvisions
1131 Utilized Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1132 Reversal Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
1133 Unwinding of discount and changes in the discount rate Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
1134 Increase due to business combinations Concept (Monetary) For Period Credit ifrs-full:AcquisitionsThroughBusinessCombinationsOtherProvisions
1135 Decrease due to loss of control of subsidiaries Concept (Monetary) For Period Debit ifrs-full:DecreaseThroughLossOfControlOfSubsidiaryOtherProvisions
1136 Exchange differences Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
1137 Other Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesOtherProvisions
1138 Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1139 1096 - Disclosure - Income Taxes - Current and Deferred Taxes Related to Each Component of Other Comprehensive Income (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesCurrentAndDeferredTaxesRelatedToEachComponentOfOtherComprehensiveIncome
1140 Implied Table Table

*

*

 implied:Table
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1142 Remeasurement of defined benefit plans, Pretax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
1143 Foreign currency translation adjustments, Pretax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationBeforeTax
1144 Reclassification adjustments for foreign currency translation adjustments, Pretax Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationBeforeTax
1145 Proportionate share of other comprehensive income of associates, Pretax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
1146 Reclassification adjustments for net changes in proportionate share of other comprehensive income of associates, Pretax Concept (Monetary) For Period Credit ln:ReclassificationToProfitOrLossOnTheProportionateShareOfOtherComprehensiveIncomeOrLossOfAssociatesAndJointVenturesBeforeTax
1147 Net changes in fair value of equity instruments at FVOCI, Pretax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments
1148 Net changes in fair value of debt instruments at FVOCI, Pretax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
1149 Reclassification adjustments for net changes in fair value of debt instruments at FVOCI, Pretax Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
1150 Net change in fair value of available-for-sale financial assets, Pretax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
1151 Reclassification adjustments for net change in fair value of available-for-sale financial assets, Pretax Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax
1152 Total, Pretax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTax
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1154 Foreign currency translation adjustments, Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
1155 Reclassification adjustments for foreign currency translation adjustments, Tax Concept (Monetary) For Period Debit ln:IncomeTaxRelatingToReclassificationAdjustmentsOnExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
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1157 Reclassification adjustments for net changes in proportionate share of other comprehensive income of associates, Tax Concept (Monetary) For Period Credit ln:IncomeTaxRelatingToReclassificationToProfitOrLossOnTheProportionateShareOfOtherComprehensiveIncomeOrLossOfAssociatesAndJointVentures
1158 Net changes in fair value of equity instruments at FVOCI, Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToInvestmentsInEquityInstrumentsOfOtherComprehensiveIncome
1159 Net changes in fair value of debt instruments at FVOCI, Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
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1161 Net change in fair value of available-for-sale financial assets, Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
1162 Reclassification adjustments for net change in fair value of available-for-sale financial assets, Tax Concept (Monetary) For Period Debit ln:IncomeTaxRelatingToReclassificationAdjustmentsOnAvailableForSaleFinancialAssets
1163 Total, Tax Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1164 Remeasurement of defined benefit plans, Post tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
1165 Foreign currency translation adjustments, Post tax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
1166 Reclassification adjustments for foreign currency translation adjustments, Post tax Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
1167 Proportionate share of other comprehensive income of associates, Post tax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
1168 Reclassification adjustments for net changes in proportionate share of other comprehensive income of associates, Post tax Concept (Monetary) For Period Debit ln:ReclassificationToProfitOrLossOnTheProportionateShareOfOtherComprehensiveIncomeOrLossOfAssociatesAndJointVenturesNetOfTax
1169 Net changes in fair value of equity instruments at FVOCI, Post tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments
1170 Net changes in fair value of debt instruments at FVOCI, Post tax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax
1171 Reclassification adjustments for net changes in fair value of debt instruments at FVOCI, Post tax Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax
1172 Net change in fair value of available-for-sale financial assets, Post tax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax
1173 Reclassification adjustments for net change in fair value of available-for-sale financial assets, Post tax Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsNetOfTax
1174 Total other comprehensive (loss)/income for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
1175 1097 - Disclosure - Income Taxes - Current and Deferred Taxes Related to Items Directly Charged or Credited to Equity (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesCurrentAndDeferredTaxesRelatedToItemsDirectlyChargedOrCreditedToEquity
1176 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

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1179 Stock Option [member] Member ln:StockOption1Member
1180 Employee Stock Ownership Plan [member] Member ln:EmployeeStockOwnershipPlanMember
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1182 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1183 Share issuance costs Concept (Monetary) For Period Debit ifrs-full:CurrentTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
1184 Share issuance costs Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
1185 Total tax directly (credited)/charged to equity Concept (Monetary) For Period Debit ifrs-full:CurrentAndDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
1186 1098 - Disclosure - Income Taxes - Movements in Deferred Tax Assets and Deferred Tax Liabilities (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesMovementsInDeferredTaxAssetsAndDeferredTaxLiabilities
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1192 Liabilities [member] Member ifrs-full:LiabilitiesMember
1193 Deferred tax liabilities [Member] Member ln:DeferredTaxLiabilitiesMember
1194 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
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1196 Available-for-sale financial assets [Member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1197 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1198 Financial assets measured at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
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1204 Tax losses [Member] Member ifrs-full:UnusedTaxLossesMember
1205 Depreciation [Member] Member ln:AccumulatedDepreciationMember
1206 Advances received [Member] Member ln:AdvancesReceivedMember
1207 Deferred revenue [Member] Member ln:DeferredRevenueMember
1208 Restoration obligations for operating lease properties [member] Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1209 Accrued bonuses [Member] Member ln:AccruedBonusesMember
1210 Allowance for doubtful account/Loss allowance [Member] Member ifrs-full:AllowanceForCreditLossesMember
1211 Other accrued expenses [Member] Member ln:OtherAccruedExpenseMember
1212 Accrued enterprise taxes [member] Member ln:AccruedEnterpriseTaxesMember
1213 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1214 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
1215 Present value of defined benefit obligations [member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
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1218 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
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1226 1099 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities Reconcile to Amounts Presented in Consolidated Statements of Financial Position (Detail) Network

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1230 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
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1236 1100 - Disclosure - Income Taxes - Breakdown of Deductible Temporary Differences (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesBreakdownOfDeductibleTemporaryDifferences
1237 Implied Table Table

*

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 implied:Table
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1243 1101 - Disclosure - Income Taxes - Unused Tax Losses (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesUnusedTaxLosses
1244 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

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1251 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
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1253 1102 - Disclosure - Income Taxes - Unused Tax Credits (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesUnusedTaxCredits
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1261 1103 - Disclosure - Income Taxes - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation
1262 Implied Table Table

*

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 implied:Table
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1265 1104 - Disclosure - Income Taxes - Components of Income Tax Expenses (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesComponentsOfIncomeTaxExpenses
1266 Implied Table Table

*

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1271 Changes related to origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
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1273 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
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1281 Amendments to the Japanese tax regulations enacted into law [member] Member ifrs-full:ChangesInTaxRatesOrTaxLawsEnactedOrAnnouncedMember
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1285 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
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1288 Deferred tax benefit from the reversal of previously written-down deferred tax assets Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
1289 Statutory income tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1290 1106 - Disclosure - Income Taxes - Reconciliation of Income Tax Expenses Calculated by Applying Statutory Tax Rates to Actual Tax Expenses (Detail) Network

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1291 Implied Table Table

*

*

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1292 Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
1293 Profit before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1294 (Loss)/profit before tax from discontinued operations Concept (Monetary) For Period Credit ln:ProfitLossBeforeTaxDiscontinuedOperations1
1295 Accounting profit before tax Concept (Monetary) For Period Credit ifrs-full:AccountingProfit
1296 Income tax expenses at a statutory rate of 31.7% (2016: 33.5% and 2017: 31.7%) Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1297 Permanent non-deductibleitems(1) Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1298 Assessment of the recoverability of deferred tax assets(2) Concept (Monetary) For Period Debit ln:TaxEffectOfIncomeExpenseOnAssessmentOfRecoverabilityOfDeferredTaxAssets
1299 Effects of changes in tax rate Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
1300 Differences in applicable tax rate of subsidiaries(3) Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
1301 Tax effect on investment in subsidiaries and associates(4) Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfTaxLosses
1302 Gain on fair value measurement relating to the deconsolidation(5) Concept (Monetary) For Period Credit ln:TaxEffectFromGainOnFairValueMeasurementRelatingToDeconsolidation
1303 Share of loss of associates and joint ventures(6) Concept (Monetary) For Period Debit ln:TaxEffectOfShareOfResultsOfAssociatesAndJointVentures
1304 Corporate taxes in prior years(7) Concept (Monetary) For Period Debit ln:TaxEffectOfCorporateTaxesInPriorYears
1305 Others Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
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1308 Income tax benefits/(expenses) attributable to discontinued operations Concept (Monetary) For Period Debit ifrs-full:TaxExpenseRelatingToGainLossOnDiscontinuance
1309 1107 - Disclosure - Income Taxes - Reconciliation of Income Tax Expenses Calculated by Applying Statutory Tax Rates to Actual Tax Expenses (Parenthetical) (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureIncomeTaxesReconciliationOfIncomeTaxExpensesCalculatedByApplyingStatutoryTaxRatesToActualTaxExpensesParenthetical
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1315 Taiwan [Member] Member country:TW
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1318 Tax losses [Member] Member ifrs-full:UnusedTaxLossesMember
1319 Deductible temporary differences [Member] Member ifrs-full:TemporaryDifferenceMember
1320 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1321 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1322 MixRadio Limited [member] Member ln:MixRadioLimitedMember
1323 Other subsidiaries [Member] Member ln:OtherSubsidiariesMember
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1326 Statutory income tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1327 Effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
1328 Assessment of the recoverability of deferred tax assets due to recognizing previously unrecognized deferred tax assets Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceCurrentTaxExpense
1329 Impact of assessment of the recoverability of deferred tax assets offset by unrecognized deferred tax assets in connection with the pre-tax losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1330 Additional tax charge Concept (Monetary) For Period Debit ln:TaxRateEffectOfAdditionalNetDeferredTaxCharges
1331 1108 - Disclosure - Financial Assets and Financial Liabilities - Carrying Amounts and Fair Value of Financial Instruments, Except for Cash and Cash Equivalents, by Line Item in Consolidated Statements of Financial Position and by Category as Defined in IAS39 (Detail) Network

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1339 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1340 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
1341 Loans and receivables [Member] Member ifrs-full:LoansAndReceivablesCategoryMember
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1343 Office security deposits [Member] Member ln:OfficeSecurityDepositsMember
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1365 Conversion right and redemption right of preferred stock [member] Member ln:ConversionRightAndRedemptionRightOfPreferredStockMember
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1374 1109 - Disclosure - Financial Assets and Financial Liabilities - Carrying Amounts and Fair Value of Financial Instruments, Except for Cash and Cash Equivalents, by Line Item in Consolidated Statements of Financial Position and by Category as Defined in IAS39 (Parenthetical) (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureFinancialAssetsAndFinancialLiabilitiesCarryingAmountsAndFairValueOfFinancialInstrumentsExceptForCashAndCashEquivalentsByLineItemInConsolidatedStatementsOfFinancialPositionAndByC_XaParenthetical
1375 Disclosure of detailed information about financial instruments [table] Table

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1408 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1409 Impairment losses Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
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1411 Other financial assets, non-current Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
1412 Credit guarantee contracts with banks for compliance with the Japanese Payment Services Act Concept (Monetary) As Of Debit ln:CreditGuaranteeContracts
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1424 1110 - Disclosure - Employment Benefits - Additional Information (Detail) Network

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1425 Disclosure of defined benefit plans [table] Table

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1430 Expenses recognized in Consolidated Statements of Profit or Loss in relation to the defined contribution plans Concept (Monetary) For Period Debit ln:ExpenseOfDefinedContributionPlans
1431 Employer contribution to be paid Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1432 Percentage of plan assets outstanding Concept (Percent) As Of ln:PercentageOfPlanAssetsOutstanding
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1434 1111 - Disclosure - Employment Benefits - Liabilities for Defined Benefit Obligations (Detail) Network

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1435 Disclosure of defined benefit plans [table] Table

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1439 Funded [member] Member ln:FundedMember
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1441 Present value of defined benefit obligations Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
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1444 1112 - Disclosure - Employment Benefits - Expenses Related to Defined Benefit Plans Recognized in Consolidated Statements of Profit or Loss as Operating Expenses (Detail) Network

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1445 Implied Table Table

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1446 Changes in net defined benefit liability (asset) [abstract] Abstract ifrs-full:ChangesInNetDefinedBenefitLiabilityAssetAbstract
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1448 Interest costs Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1449 Total Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1450 1113 - Disclosure - Employment Benefits - Movements in Present Value of Defined Benefit Obligations (Detail) Network

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1451 Disclosure of net defined benefit liability (asset) [table] Table

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1468 Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1469 1114 - Disclosure - Employment Benefits - Movements in the Plan Assets (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureEmploymentBenefitsMovementsInThePlanAssets
1470 Disclosure of net defined benefit liability (asset) [table] Table

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1479 Gains due to remeasurement Plan assets revenue (excluding interest income) Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
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1481 Plan assets at the end of year Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1482 1115 - Disclosure - Employment Benefits - Principal Actuarial Assumptions Used for Measuring Defined Benefit Expenses and Defined Benefit Obligation (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureEmploymentBenefitsPrincipalActuarialAssumptionsUsedForMeasuringDefinedBenefitExpensesAndDefinedBenefitObligation
1483 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1491 1116 - Disclosure - Employment Benefits - Sensitivity Analysis for Impact of Changes in Certain Significant Actuarial Assumptions Leaving All Other Assumptions Constant (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureEmploymentBenefitsSensitivityAnalysisForImpactOfChangesInCertainSignificantActuarialAssumptionsLeavingAllOtherAssumptionsConstant
1492 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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*

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1496 Salary increase rate [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
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1498 100 basis point increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1499 100 basis point decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1500 1117 - Disclosure - Employment Benefits - Estimated Future Benefit Payments within Ten Years from December 31, 2018 (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureEmploymentBenefitsEstimatedFutureBenefitPaymentsWithinTenYearsFromDecember312018
1501 Disclosure of defined benefit plans [table] Table

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*

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1512 1118 - Disclosure - Leases-Group as Lessee - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureLeasesGroupAsLesseeAdditionalInformation
1513 Implied Table Table

*

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1515 Lives of significant operating leases Concept (Text/String) For Period ifrs-full:DescriptionOfMaterialLeasingArrangementsByLesseeClassifiedAsOperatingLease
1516 Operating lease expenses Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
1517 Minimum lease payment expenses Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
1518 Variable lease payment expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseRelatingToVariableLeasePaymentsNotIncludedInMeasurementOfLeaseLiabilities
1519 1119 - Disclosure - Leases-Group as Lessee - Future Minimum Lease Payment under Non-cancelable Operating Leases (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureLeasesGroupAsLesseeFutureMinimumLeasePaymentUnderNoncancelableOperatingLeases
1520 Disclosure of maturity analysis of operating lease payments [table] Table

*

*

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1521 Maturity [axis] Axis ifrs-full:MaturityAxis
1522 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1523 Less than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1524 One to five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1525 After five years [Member] Member ifrs-full:LaterThanFiveYearsMember
1526 Disclosure of maturity analysis of operating lease payments [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsLineItems
1527 Future minimum rentals payable under non-cancelable operating leases Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1528 1120 - Disclosure - Leases-Group as Lessor - Future Minimum Rentals Receivable under Non-cancelable Operating Leases (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureLeasesGroupAsLessorFutureMinimumRentalsReceivableUnderNoncancelableOperatingLeases
1529 Disclosure of finance lease and operating lease by lessor [table] Table

*

*

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1530 Maturity [axis] Axis ifrs-full:MaturityAxis
1531 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1532 Less than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1533 One to five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1534 Disclosure of finance lease and operating lease by lessor [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorLineItems
1535 Future minimum rentals receivable under non-cancelable operating leases Concept (Monetary) As Of Debit ifrs-full:MinimumLeasePaymentsReceivableUnderNoncancellableOperatingLease
1536 1121 - Disclosure - Leases-Group as Lessor - Additional Information (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureLeasesGroupAsLessorAdditionalInformation
1537 Implied Table Table

*

*

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1538 Disclosure of finance lease and operating lease by lessor [abstract] Abstract ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorAbstract
1539 Sublease income recognized Concept (Monetary) For Period Credit ifrs-full:IncomeFromSubleasingRightofuseAssets
1540 1122 - Disclosure - Issued Capital and Reserves - Movements of Authorized Shares and Shares Issued (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesMovementsOfAuthorizedSharesAndSharesIssued
1541 Disclosure of classes of share capital [table] Table

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*

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1542 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1543 Shareholder's equity [Member] Member ifrs-full:EquityMember
1544 Share capital [member] Member ifrs-full:IssuedCapitalMember
1545 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
1546 Common shares [Member] Member ifrs-full:OrdinarySharesMember
1547 Common shares [member] Member ln:CommonSharesMember
1548 Class A shares [member] Member ln:ClassASharesMember
1549 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1550 Number of authorized shares (Share capital with no-par value), Beginning balance Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1551 Number of authorized shares (Share capital with no-par value), Conversion between common shares and class A shares Concept (Shares) For Period ln:NumberOfSharesAuthorisedForConversion
1552 Number of authorized shares (Share capital with no-par value), Ending balance Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1553 Number of shares issued (Share capital with no-par value), Beginning balance Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1554 Number of shares issued (Share capital with no-par value), Conversion between common shares and class A shares Concept (Shares) For Period ln:NumberOfSharesConverted
1555 Number of shares issued (Share capital with no-par value), Initial public offering Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
1556 Number of shares issued (Share capital with no-par value), Exercise of stock options Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1557 Number of shares issued (Share capital with no-par value), Issuance of common shares Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfSharesOutstanding
1558 Number of shares issued (Share capital with no-par value), Ending balance Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1559 Share capital, Beginning balance Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1560 Share capital, Initial public offering Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
1561 Share capital, Exercise of stock options Concept (Monetary) For Period Credit ln:IncreaseDecreaseThroughExerciseOfOptionsRelatedToIssuanceOfCommonShares
1562 Share capital, Issuance of common shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
1563 Share capital, Ending balance Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1564 1123 - Disclosure - Issued Capital and Reserves - Movements of Authorized Shares and Shares Issued (Parenthetical) (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesMovementsOfAuthorizedSharesAndSharesIssuedParenthetical
1565 Disclosure of classes of share capital [table] Table

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*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1566 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
1567 Common shares [Member] Member ifrs-full:OrdinarySharesMember
1568 Common shares [member] Member ln:CommonSharesMember
1569 Legal Entity [Axis] Axis dei:LegalEntityAxis
1570 Entity [Domain] Member dei:EntityDomain
1571 Trust And Custody Services Bank Ltd [member] Member ln:TrustAndCustodyServicesBankLtdMember
1572 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1573 Common shares issued through the initial public offering of new shares Concept (Shares) For Period ln:NumberOfSharesIssuedDuringPeriod
1574 Shares issued upon exercise of options to purchase additional common shares in an allotment of new shares Concept (Shares) As Of ifrs-full:SharesReservedForIssueUnderOptionsAndContractsForSaleOfShares
1575 Number of shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1576 Total issued shares Concept (Monetary) For Period Credit ln:IssuanceOfCommonSharesAndAcquisitionOfTreasurySharesUnderEmployeeStockOwnershipPlan
1577 Increase in share capital Concept (Monetary) For Period Credit ifrs-full:ChangesInEquity
1578 1124 - Disclosure - Issued Capital and Reserves - Movements in Share Premium (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesMovementsInSharePremium
1579 Disclosure of reserves within equity [table] Table

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1581 Shareholder's equity [Member] Member ifrs-full:EquityMember
1582 Stock Option [member] Member ln:StockOption1Member
1583 Common control business combinations [member] Member ifrs-full:MergerReserveMember
1584 Others [member] Member ifrs-full:MiscellaneousOtherReservesMember
1585 Share premium [member] Member ifrs-full:SharePremiumMember
1586 Disclosure of reserves within equity [line items] LineItems ifrs-full:DisclosureOfReservesWithinEquityLineItems
1587 Share premium, Beginning balance Concept (Monetary) As Of Credit ifrs-full:SharePremium
1588 Share-based payments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
1589 Exercise of stock options Concept (Monetary) For Period Credit ln:IncreaseDecreaseThroughExerciseOfOptionsRelatedToIssuanceOfCommonShares
1590 Forfeiture of stock options Concept (Monetary) For Period Credit ln:ForfeitureOfStockOptions
1591 Initial public offering Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners
1592 Issuance of common shares Concept (Monetary) For Period Credit ln:IncreaseDecreaseInIssuedCapital
1593 Issuance of convertible bonds with stock acquisition rights Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughConversionOfConvertibleInstruments
1594 Cost related to initial public offering Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
1595 Changes in interests in subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInEquityOfSubsidiaries
1596 Acquisition of non-controlling interest Concept (Monetary) For Period Credit ln:IncreaseDecreaseThroughAcquisitionOfNoncontrollingInterest
1597 Disposal of treasury shares Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
1598 Share premium, Ending balance Concept (Monetary) As Of Credit ifrs-full:SharePremium
1599 1125 - Disclosure - Issued Capital and Reserves - Movements in Share Premium (Parenthetical) (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesMovementsInSharePremiumParenthetical
1600 Disclosure of reserves within equity [table] Table

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1603 Common shares [member] Member ln:CommonSharesMember
1604 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1605 Shareholder's equity [Member] Member ifrs-full:EquityMember
1606 Common control business combinations [member] Member ifrs-full:MergerReserveMember
1607 Third Party Allotment [member] Member ln:ThirdPartyAllotmentMember
1608 Legal Entity [Axis] Axis dei:LegalEntityAxis
1609 Entity [Domain] Member dei:EntityDomain
1610 Trust And Custody Services Bank Ltd [member] Member ln:TrustAndCustodyServicesBankLtdMember
1611 Disclosure of reserves within equity [line items] LineItems ifrs-full:DisclosureOfReservesWithinEquityLineItems
1612 Common shares issued through the initial public offering of new shares Concept (Shares) For Period ln:NumberOfSharesIssuedDuringPeriod
1613 Shares issued upon exercise of options to purchase additional common shares in an allotment of new shares Concept (Shares) As Of ifrs-full:SharesReservedForIssueUnderOptionsAndContractsForSaleOfShares
1614 Number of shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1615 Total issued shares Concept (Monetary) For Period Credit ln:IssuanceOfCommonSharesAndAcquisitionOfTreasurySharesUnderEmployeeStockOwnershipPlan
1616 Increase (decrease) in share capital Concept (Monetary) For Period Credit ifrs-full:ChangesInEquity
1617 Minimum percentage required under the Companies Act of Japan for proceeds of certain issuances of share capital credited to share capital Concept (Percent) For Period ln:PercentageOfProceedsFromIssuancesOfShareCapitalCreditedToShareCapital
1618 1126 - Disclosure - Issued Capital and Reserves - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesAdditionalInformation
1619 Implied Table Table

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 implied:Table
1620 Disclosure of reserves within equity [abstract] Abstract ifrs-full:DisclosureOfReservesWithinEquityAbstract
1621 Minimum percentage required under the Companies Act of Japan for dividends from surplus be appropriated as capital reserve or legal earnings reserve Concept (Percent) For Period ln:MinimumPercentageOfCashDividendDeclaredAppropriationToLegalReserve
1622 Threshold percentage specified under the Companies Act of Japan for aggregate amount capital reserve and legal earnings reserve, over which the appropriation may cease Concept (Percent) For Period ln:PercentageOfRegisteredCapitalWhenTheAppropriationToTheReserveFundMayCease
1623 1127 - Disclosure - Issued Capital and Reserves - Summary of Movement of Treasury Shares (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesSummaryOfMovementOfTreasuryShares
1624 Implied Table Table

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*

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1625 Disclosure Of Movement Of Treasury Shares [abstract] Abstract ln:DisclosureOfMovementOfTreasurySharesAbstract
1626 Treasury shares, Beginning balance Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
1627 Increase during the year Concept (Monetary) For Period Debit ifrs-full:PurchaseOfTreasuryShares
1628 Decrease during the year Concept (Monetary) For Period Credit ifrs-full:SaleOrIssueOfTreasuryShares
1629 Treasury shares, Ending balance Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
1630 Treasury shares, Beginning balance Concept (Shares) As Of ln:TreasuryStockShares1
1631 Increase during the year Concept (Shares) For Period ln:IncreaseInTreasurySharesHeld
1632 Decrease during the year Concept (Shares) For Period ln:DecreaseInTreasurySharesHeld
1633 Treasury shares, Ending balance Concept (Shares) As Of ln:TreasuryStockShares1
1634 1128 - Disclosure - Issued Capital and Reserves - Summary of Movement of Treasury Shares (Parenthetical) (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureIssuedCapitalAndReservesSummaryOfMovementOfTreasurySharesParenthetical
1635 Disclosure of treasury shares [table] Table

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1636 Legal Entity [Axis] Axis dei:LegalEntityAxis
1637 Entity [Domain] Member dei:EntityDomain
1638 Trust And Custody Services Bank Ltd [member] Member ln:TrustAndCustodyServicesBankLtdMember
1639 Disclosure of treasury shares [line items] LineItems ln:DisclosureOfTreasurySharesLineItems
1640 Number of shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1641 Total issued shares Concept (Monetary) For Period Credit ln:IssuanceOfCommonSharesAndAcquisitionOfTreasurySharesUnderEmployeeStockOwnershipPlan
1642 1129 - Disclosure - Supplemental Cash Flow Information - Additional Information (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationAdditionalInformation
1643 Supplemental Cash Flow Information [table] Table

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1645 Entity [Domain] Member dei:EntityDomain
1646 LINE BIZ Plus Ltd. (subsequently renamed to RABBIT LINE PAY COMPANY LIMITED) [member] Member ln:LINEBIZPlusLtdMember
1647 NAVER Corporation [member] Member ln:NaverCorporationMember
1648 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
1649 LINE Games Corporation [member] Member ln:LINEGamesCorporationMember
1650 Trust And Custody Services Bank Ltd [member] Member ln:TrustAndCustodyServicesBankLtdMember
1651 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
1652 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
1653 Camera Application Business (was operated by a wholly owned subsidiary, LINE Plus Corporation) [Member] Member ln:CameraApplicationBusinessMember
1654 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1655 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1656 Snow Corporation [member] Member ln:SnowCorporationMember
1657 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1658 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1659 Ultimate Parent Company [member] Member ifrs-full:ParentMember
1660 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1661 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1662 Next Floor Corporation [member] Member ln:NextFloorCorporationMember
1663 Supplemental cash flow information [line items] LineItems ln:SupplementalCashFlowInformationLineItems
1664 Joint venture ownership percentage under equity method Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
1665 Re-measurement to fair value of investment retained Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentInJointVenturesWherePriceQuotationsPublished
1666 Issuance of new shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
1667 Gain on divestiture of business and subsidiaries Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
1668 Proceeds from short-term borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromCurrentBorrowings
1669 Repayments of short-term borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
1670 Number of newly issued common shares received in exchange for transfer of business Concept (Shares) For Period ln:NumberOfSharesAcquiredInExchangeForSaleOfBusiness
1671 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1672 Percentage of ownership in Snow Corporation held by ultimate parent company Concept (Percent) For Period ln:RemainingProportionOfOwnershipInterestInSubsidiary
1673 Number of shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1674 Increase in share capital Concept (Monetary) For Period Credit ifrs-full:ChangesInEquity
1675 Increase in share premium Concept (Monetary) For Period Credit ln:IncreaseDecreaseInSharePremium
1676 Increase in treasury shares Concept (Monetary) For Period Credit ln:IssuanceOfCommonSharesAndAcquisitionOfTreasurySharesUnderEmployeeStockOwnershipPlan
1677 Loan provided Concept (Monetary) For Period Credit ln:DebtEquitySwap
1678 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1679 1130 - Disclosure - Supplemental Cash Flow Information - Assets, Liabilities and Other Items of LINE BIZ Plus Ltd. Transferred in Connection with Deconsolidation (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationAssetsLiabilitiesAndOtherItemsOfLINEBIZPlusLtdTransferredInConnectionWithDeconsolidation
1680 Disclosure of Information About Unconsolidated Subsidiaries [Table] Table

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1681 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
1682 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
1683 LINE BIZ Plus Ltd. (subsequently renamed to RABBIT LINE PAY COMPANY LIMITED) [member] Member ln:LINEBIZPlusLtdMember
1684 Disclosure of Information About Unconsolidated Subsidiaries [Line Items] LineItems ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesLineItems
1685 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1686 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1687 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1688 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1689 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1690 Goodwill Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill
1691 Non-controlling interests Concept (Monetary) For Period Credit ln:NoncontrollingInterestsChangesInSubsidiariesOwnership
1692 Exchange differences on translation of foreign operations: Reclassification to profit or loss Concept (Monetary) As Of Credit ifrs-full:ReserveOfExchangeDifferencesOnTranslation
1693 Total Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
1694 1131 - Disclosure - Supplemental Cash Flow Information - Assets, Liabilities and Other Items of Bonsai Garage Corporation Transferred in Connection with Deconsolidation (Detail) Network

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*

 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationAssetsLiabilitiesAndOtherItemsOfBonsaiGarageCorporationTransferredInConnectionWithDeconsolidation
1695 Disclosure of Information About Unconsolidated Subsidiaries [Table] Table

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1696 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
1697 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
1698 Bonsai Garage Corporation [member] Member ln:BonsaiGarageCorporationMember
1699 Disclosure of Information About Unconsolidated Subsidiaries [Line Items] LineItems ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesLineItems
1700 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1701 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1702 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1703 Gain on divestiture of business and subsidiary Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
1704 Consideration received Concept (Monetary) For Period Credit ifrs-full:ConsiderationPaidReceived
1705 Cash disposed on loss of control of subsidiary Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
1706 1132 - Disclosure - Supplemental Cash Flow Information - Assets, Liabilities and Other Items of Camera Application Business Transferred in Connection with Deconsolidation (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationAssetsLiabilitiesAndOtherItemsOfCameraApplicationBusinessTransferredInConnectionWithDeconsolidation
1707 Disclosure of Information About Unconsolidated Subsidiaries [Table] Table

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*

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1708 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
1709 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
1710 Camera Application Business (was operated by a wholly owned subsidiary, LINE Plus Corporation) [Member] Member ln:CameraApplicationBusinessMember
1711 Disclosure of Information About Unconsolidated Subsidiaries [Line Items] LineItems ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesLineItems
1712 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1713 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1714 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1715 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1716 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1717 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1718 Total Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
1719 Consideration received Concept (Monetary) For Period Credit ifrs-full:ConsiderationPaidReceived
1720 Gain on transfer Concept (Monetary) For Period Credit ln:GainOnTransferOfBusiness
1721 1133 - Disclosure - Supplemental Cash Flow Information - Movements on Liabilities from Financing Activities (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationMovementsOnLiabilitiesFromFinancingActivities
1722 Disclosure of reconciliation of liabilities arising from financing activities [table] Table

*

*

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1723 Liabilities arising from financing activities [axis] Axis ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
1724 Liabilities arising from financing activities [member] Member ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
1725 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
1726 Long-term borrowings [member] Member ifrs-full:LongtermBorrowingsMember
1727 Long Term Corporate Bond [member] Member ln:LongTermCorporateBondMember
1728 Disclosure of reconciliation of liabilities arising from financing activities [line items] LineItems ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems
1729 Net liabilities, Beginning balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1730 Cash flows Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities
1731 Transfer of liquidity Concept (Monetary) For Period Credit ln:IncreaseDecreaseInDebtDueToTransferOfLiquidity
1732 Increase due to business combinations Concept (Monetary) For Period Credit ln:IncreaseDecreaseThroughBusinessCombinationsBorrowings
1733 Decrease due to loss of control of subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities
1734 Increase due to recognition of interest expense of corporate bond at amortized cost Concept (Monetary) For Period Credit ln:IncreaseDecreaseDueToRecognitionOfInterestExpenseOfCorporateBondAtAmortizedCost
1735 Recognition of stock acquisition rights through issuance of corporate bonds and deferred tax liabilities Concept (Monetary) For Period Credit ln:RecognitionOfStockAcquisitionRightsThroughIssuanceOfCorporateBondsAndDeferredTaxLiabilities
1736 Foreign currency translation adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
1737 Net liabilities, Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1738 1134 - Disclosure - Supplemental Cash Flow Information - Summary of Assets, Liabilities and Gain on Loss of Control after Deconsolidation (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationSummaryOfAssetsLiabilitiesAndGainOnLossOfControlAfterDeconsolidation
1739 Disclosure of Information About Unconsolidated Subsidiaries [Table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesTable
1740 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
1741 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
1742 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
1743 Disclosure of Information About Unconsolidated Subsidiaries [Line Items] LineItems ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesLineItems
1744 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1745 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1746 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1747 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
1748 Other non-currentassets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentNonfinancialAssets
1749 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1750 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1751 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1752 Total Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
1753 Fair value of investment owned by the Group Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
1754 Gain on loss of control of subsidiaries Concept (Monetary) For Period Credit ln:GainOnTransferOfBusiness
1755 1135 - Disclosure - Supplemental Cash Flow Information - Summary of Assets, Liabilities and Gains of Loss of Control after Deconsolidation (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureSupplementalCashFlowInformationSummaryOfAssetsLiabilitiesAndGainsOfLossOfControlAfterDeconsolidation
1756 Disclosure of Information About Unconsolidated Subsidiaries [Table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutUnconsolidatedSubsidiariesTable
1757 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
1758 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
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1761 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1762 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1763 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
1764 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1765 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1766 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1767 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1768 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
1769 Non-controlling interests Concept (Monetary) For Period Credit ln:NoncontrollingInterestsChangesInSubsidiariesOwnership
1770 Total Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
1771 Fair value of investment owned by the Group Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
1772 Gain on loss of control of subsidiaries Concept (Monetary) For Period Credit ln:GainOnTransferOfBusiness
1773 1136 - Disclosure - Revenue from Contracts with Customers - Summary of Consolidated statement of Profit or Loss (Detail) Network

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1774 Implied Table Table

*

*

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1776 Revenue from contracts with customers Abstract ifrs-full:ReceivablesFromContractsWithCustomersAbstract
1777 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1778 Other operating income: Virtual credits breakage income Concept (Monetary) For Period Credit ln:VirtualCreditsBreakageIncome
1779 Revenue from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1780 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
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1782 Disclosure of revenue from contracts with customers [table] Table

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1786 Virtual credits [member] Member ln:VirtualCreditsMember
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1788 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:ReceivablesFromContractsWithCustomers
1789 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
1790 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
1791 1138 - Disclosure - Revenue from Contracts with Customers - Summary of Revenue Recognized (Detail) Network

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1796 Virtual credits [member] Member ln:VirtualCreditsMember
1797 Disclosure of revenue that was included in contract liability [line items] LineItems ln:DisclosureOfRevenueThatWasIncludedInContractLiabilityLineItems
1798 Revenue that was included in contract liability balance at beginning of period Concept (Monetary) For Period Credit ifrs-full:RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
1799 1139 - Disclosure - Revenue from Contracts with Customers - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureRevenueFromContractsWithCustomersAdditionalInformation
1800 Implied Table Table

*

*

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1801 Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [abstract] Abstract ifrs-full:DisclosureOfAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomersAbstract
1802 Contract costs Concept (Monetary) As Of Debit ifrs-full:AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers
1803 Amortisation expenses of contract costs Concept (Monetary) For Period Debit ifrs-full:AmortisationAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers
1804 1140 - Disclosure - Other Income and Expenses - Summary of Other Operating Income (Detail) Network

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1805 Implied Table Table

*

*

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1806 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1807 Virtual credits breakage income Concept (Monetary) For Period Credit ln:VirtualCreditsBreakageIncome
1808 Gain on loss of control of subsidiaries and business transfer Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
1809 Dilution gain Concept (Monetary) For Period Credit ln:DilutionGain
1810 Gain on sale of land Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
1811 Others Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
1812 Total Concept (Monetary) For Period Credit ifrs-full:OtherIncome
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1814 Disclosure of Analysis of Income and Expense [table] Table

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1817 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1818 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1819 Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
1820 Land [Member] Member ifrs-full:LandMember
1821 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1822 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1823 Snow Corporation [member] Member ln:SnowCorporationMember
1824 Disclosure of Analysis of Income and Expense [line items] LineItems ln:DisclosureOfAnalysisOfIncomeAndExpenseLineItems
1825 Dilution gain Concept (Monetary) For Period Credit ln:DilutionGain
1826 Carrying amount of land sold Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
1827 Sale price of land Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
1828 Gain on sale of land Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
1829 1142 - Disclosure - Other Income and Expenses - Summary of Other Operating Expenses (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureOtherIncomeAndExpensesSummaryOfOtherOperatingExpenses
1830 Implied Table Table

*

*

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1831 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1832 Rent Concept (Monetary) For Period Debit ifrs-full:RentalExpense
1833 Travel Concept (Monetary) For Period Debit ifrs-full:TravelExpense
1834 Supplies Concept (Monetary) For Period Debit ln:SuppliesExpense
1835 Taxes and dues Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
1836 Professional fees Concept (Monetary) For Period Debit ifrs-full:ProfessionalFeesExpense
1837 Cost of goods Concept (Monetary) For Period Debit ifrs-full:CostOfMerchandiseSold
1838 Training Concept (Monetary) For Period Debit ln:TrainingExpense
1839 LINE points Concept (Monetary) For Period Debit ln:PointsExpense
1840 Others Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
1841 Total Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
1842 1143 - Disclosure - Other Income and Expenses - Summary of Other Non-operating Income (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureOtherIncomeAndExpensesSummaryOfOtherNonoperatingIncome
1843 Implied Table Table

*

*

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1844 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1845 Gain on financial assets at fair value through profit or loss Concept (Monetary) For Period Credit ln:GainsOnFinancialAssetsAtFairValueThroughProfitOrLoss
1846 Dividend income Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
1847 Gain on sale of financial assets Concept (Monetary) For Period Credit ln:GainOnDisposalOfFinancialAssets
1848 Gain from derivatives Concept (Monetary) For Period Credit ifrs-full:GainsOnChangeInFairValueOfDerivatives
1849 Others Concept (Monetary) For Period Credit ln:MiscellaneousOtherNonOperatingIncome
1850 Total Concept (Monetary) For Period Credit ln:OtherNonOperatingIncome1
1851 1144 - Disclosure - Other Income and Expenses - Summary of Other Non-operating Expenses (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureOtherIncomeAndExpensesSummaryOfOtherNonoperatingExpenses
1852 Implied Table Table

*

*

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1853 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1854 Loss on financial assets at fair value through profit or loss Concept (Monetary) For Period Debit ln:LossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
1855 Loss on impairment of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
1856 Loss from derivatives Concept (Monetary) For Period Debit ifrs-full:LossesOnChangeInFairValueOfDerivatives
1857 Others Concept (Monetary) For Period Debit ln:MiscellaneousOtherNonOperatingExpense
1858 Total Concept (Monetary) For Period Debit ln:OtherNonOperatingExpenses
1859 1145 - Disclosure - Discontinued Operations - Aggregated Results and Cash Flow Information of Discontinued Operations (Detail) Network

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1860 Disclosure of analysis of single amount of discontinued operations [table] Table

*

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1861 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1862 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
1863 Discontinued Operations: MixRadio Limited [member] Member ifrs-full:DiscontinuedOperationsMember
1864 Disclosure of analysis of single amount of discontinued operations [line items] LineItems ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems
1865 Revenues Concept (Monetary) For Period Credit ln:RevenueDiscontinuedOperations1
1866 Other income Concept (Monetary) For Period Credit ln:OtherIncomeExpensesDiscontinuedOperations
1867 Expenses Concept (Monetary) For Period Debit ln:ExpensesDiscontinuedOperations1
1868 (Loss)/profit before tax from discontinued operations Concept (Monetary) For Period Credit ln:ProfitLossBeforeTaxDiscontinuedOperations1
1869 Income tax benefits/(expenses) on liquidation Concept (Monetary) For Period Debit ifrs-full:TaxExpenseRelatingToGainLossOnDiscontinuance
1870 (Loss)/profit for the year from discontinued operations (attributable to the shareholders of the Company) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntity
1871 1146 - Disclosure - Discontinued Operations - Aggregated Results and Cash Flow Information of Discontinued Operations (Parenthetical) (Detail) Network

*

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1872 Disclosure of analysis of single amount of discontinued operations [table] Table

*

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1873 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1874 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
1875 Discontinued Operations: MixRadio Limited [member] Member ifrs-full:DiscontinuedOperationsMember
1876 Disclosure of analysis of single amount of discontinued operations [line items] LineItems ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems
1877 Gain from discharge of debt Concept (Monetary) For Period Credit ln:OtherIncomeExpensesDiscontinuedOperations
1878 Employee termination benefits Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
1879 Office lease termination fees Concept (Monetary) For Period Debit ln:OfficeLeaseTerminationFees
1880 1147 - Disclosure - Discontinued Operations - Cash Flow Information of Discontinued Operations (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureDiscontinuedOperationsCashFlowInformationOfDiscontinuedOperations
1881 Disclosure of analysis of single amount of discontinued operations [table] Table

*

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1882 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1883 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
1884 Discontinued Operations: MixRadio Limited [member] Member ifrs-full:DiscontinuedOperationsMember
1885 Disclosure of analysis of single amount of discontinued operations [line items] LineItems ifrs-full:DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems
1886 Operating Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations
1887 Investing Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations
1888 Financing Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations
1889 Net cash outflow Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations
1890 1148 - Disclosure - Earnings per Share - Profit or Loss and Weighted Average Number of Shares Used in Calculation of Earnings per Share (Detail) Network

*

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 http://linecorp.com/taxonomy/role/DisclosureEarningsPerShareProfitOrLossAndWeightedAverageNumberOfSharesUsedInCalculationOfEarningsPerShare
1891 Earnings per share [table] Table

*

*

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1892 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1893 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1894 Common shares and class A shares [member] Member ln:CommonSharesAndClassaSharesMember
1895 Treasury shares [member] Member ifrs-full:TreasurySharesMember
1896 Earnings per share [line items] LineItems ifrs-full:EarningsPerShareLineItems
1897 Profit/(loss) for the year attributable to the shareholders of the Company from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
1898 (Loss)/profit for the year attributable to the shareholders of the Company from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
1899 Total profit/(loss) for the year attributable to the shareholders of the Company for basic earnings and diluted earnings per share Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
1900 Weighted average number of common and class A shares for basic earnings per share Concept (Shares) For Period ifrs-full:WeightedAverageShares
1901 Stock options Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1902 Employee Stock Ownership Plan (J-ESOP) Concept (Shares) For Period ln:DilutiveEffectOfEmployeeStockOwnershipPlan
1903 Convertible bonds with stock acquisition rights Concept (Shares) For Period ifrs-full:DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares
1904 Weighted average number of total common and class A shares adjusted for the effect of dilution Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1905 1149 - Disclosure - Earnings per Share - Additional Information (Detail) Network

*

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1906 Earnings per share [table] Table

*

*

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1907 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1908 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
1909 Common stock options [member] Member ln:CommonStockOptionsMember
1910 Stock options and ESOP [member] Member ln:StockOptionsAndEsopMember
1911 Employee Stock Ownership Plan [member] Member ln:EmployeeStockOwnershipPlanMember
1912 Earnings per share [line items] LineItems ifrs-full:EarningsPerShareLineItems
1913 Outstanding stock options, with a dilutive impact on profit per share from continuing operations Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1914 Number of common shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1915 1150 - Disclosure - Financial Risk Management - Maximum Amounts of Possible Financial Loss Due to Credit Risk (Detail) Network

*

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1916 Disclosure of credit risk exposure [table] Table

*

*

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1917 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1918 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1919 Demand deposits [Member] Member ln:DemandDeposits1Member
1920 Time deposits [Member] Member ln:TimeDepositsMember
1921 Loan receivable [member] Member ln:LoanReceivableMember
1922 Guarantee deposits [Member] Member ln:GuaranteeDepositsMember
1923 Trade and other receivables [Member] Member ln:TradesAndOtherReceivablesMember
1924 Japanese government bonds [Member] Member ln:JapaneseGovernmentBondsMember
1925 Corporate bonds and other debt instruments [Member] Member ln:CorporateBondsAndOtherDebtInstrumentsMember
1926 Office security deposits [Member] Member ln:OfficeSecurityDepositsMember
1927 Disclosure of credit risk exposure [line items] LineItems ifrs-full:DisclosureOfCreditRiskExposureLineItems
1928 Maximum amounts of possible financial loss due to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRiskOfFinancialAssets
1929 1151 - Disclosure - Financial Risk Management - Maximum Amounts of Possible Financial Loss Due to Credit Risk (Parenthetical) (Detail) Network

*

*

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1930 Implied Table Table

*

*

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1931 Disclosure of credit risk exposure [abstract] Abstract ifrs-full:DisclosureOfCreditRiskExposureAbstract
1932 Percentage of the Group's trade and other receivables representing significant concentrations of credit risk with two payment processing service providers Concept (Percent) As Of ln:PercentageOfEntitysTradeAndOtherReceivables
1933 1152 - Disclosure - Financial Risk Management - Summary of Loss Allowance for Trade and Other Receivables (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureFinancialRiskManagementSummaryOfLossAllowanceForTradeAndOtherReceivables
1934 Disclosure of provision matrix [table] Table

*

*

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1935 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1936 Total [member] Member ifrs-full:PastDueStatusMember
1937 Current [member] Member ifrs-full:CurrentMember
1938 Within six months past due [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanSixMonthsMember
1939 Over six months past due [member] Member ifrs-full:LaterThanSixMonthsMember
1940 Over twelve months past due [member] Member ifrs-full:LaterThanOneYearMember
1941 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1942 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1943 Trade receivables [Member] Member ifrs-full:TradeReceivablesMember
1944 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1945 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1946 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1947 Loss allowance [member] Member ifrs-full:AccumulatedImpairmentMember
1948 Disclosure of provision matrix [line items] LineItems ifrs-full:DisclosureOfProvisionMatrixLineItems
1949 Expected credit loss rate Concept (Percent) As Of ifrs-full:ExpectedCreditLossRate
1950 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1951 1153 - Disclosure - Financial Risk Management - Movement in Allowance for Doubtful Accounts Attributable to Trade and Other Receivables (Detail) Network

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1952 Disclosure of financial assets [table] Table

*

*

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1953 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1954 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1955 Trade and other receivables, and other financial assets current [Member] Member ln:TradeAndOtherReceivablesAndOtherFinancialAssetsCurrentMember
1956 Effect of overlay approach reclassification [axis] Axis ifrs-full:EffectOfOverlayApproachReclassificationAxis
1957 In accordance with IFRS 9 [member] Member ifrs-full:InAccordanceWithIFRS9Member
1958 Adoption Of IFRS 9 [member] Member ln:AdoptionOfIFRS9Member
1959 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1960 Allowance for doubtful accounts beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1961 Provision for the year Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1962 Reversal Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1963 Utilized Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1964 Acquisition of subsidiary Concept (Monetary) For Period Credit ln:IncreaseDecreaseThroughAcquisitionOfSubsidiaryAllowanceAccountForCreditLossesOfFinancialAssets
1965 Deconsolidation Concept (Monetary) For Period Debit ln:DeconsolidationAllowanceAccountForCreditLossesOfFinancialAssets
1966 Translation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
1967 Allowance for doubtful accounts ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1968 1154 - Disclosure - Financial Risk Management - Additional Information (Detail) Network

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*

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1969 Disclosure of detailed information about financial instruments [table] Table

*

*

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1970 Currency [Axis] Axis srt:CurrencyAxis
1971 All Currencies [Domain] Member currency:AllCurrenciesDomain
1972 USD [Member] Member currency:USD
1973 TWD [Member] Member currency:TWD
1974 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1975 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1976 Financial assets measured at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1977 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1978 Allowance for doubtful accounts Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1979 Contribution requirement as a limited partner of private equity investment funds, up to amount of the Group's unfunded capital commitment Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
1980 1155 - Disclosure - Financial Risk Management - Book Values of Financial Liabilities Based on Remaining Maturities (Detail) Network

*

*

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1981 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

*

*

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1982 Maturity [axis] Axis ifrs-full:MaturityAxis
1983 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1984 Less than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1985 One to five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1986 After five years [Member] Member ifrs-full:LaterThanFiveYearsMember
1987 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1988 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1989 Short-term borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1990 Deposits received Concept (Monetary) As Of Credit ifrs-full:CurrentDepositsFromCustomers
1991 Corporate bonds Concept (Monetary) As Of Credit ifrs-full:BondsIssued
1992 Office security deposits received under sublease agreement Concept (Monetary) As Of Credit ln:OfficeSecurityDepositReceivedUnderSubLeaseAgreementCurrent
1993 Put option liabilities Concept (Monetary) As Of Credit ln:PutOptionLiabilities
1994 Total Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilitiesAtAmortisedCost
1995 Trade and other payables, Contractual cash outflows Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
1996 Short-term borrowings, Contractual cash outflows Concept (Monetary) As Of Credit ifrs-full:BankBorrowingsUndiscountedCashFlows
1997 Deposits received, Contractual cash outflows Concept (Monetary) As Of Credit ln:DepositsReceivedUndiscountedCashFlows
1998 Corporate bonds, Contractual cash outflows Concept (Monetary) As Of Credit ifrs-full:BondsIssuedUndiscountedCashFlows
1999 Office security deposits received under sublease agreement, Contractual cash outflows Concept (Monetary) As Of Credit ln:OfficeSecurityDepositReceivedUnderSubleaseAgreementCurrentUndiscountedCashFlows
2000 Put option liabilities, Contractual cash outflows Concept (Monetary) As Of Credit ln:PutOptionLiabilitiesUndiscountedCashFlows
2001 Total, Contractual cash outflows Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
2002 Lines of credit available Concept (Monetary) As Of Credit ln:AvailableBorrowingFacilities
2003 Lines of credit used Concept (Monetary) As Of Credit ln:DrawnBorrowingFacilities
2004 Remaining lines of credit available Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
2005 1156 - Disclosure - Financial Risk Management - Exposure to Exchange Rate Risk: Book Values of Major Monetary Assets and Liabilities Denominated in Currencies Other Than Functional Currency (Detail) Network

*

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2006 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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2007 Currency [Axis] Axis srt:CurrencyAxis
2008 All Currencies [Domain] Member currency:AllCurrenciesDomain
2009 KRW [Member] Member currency:KRW
2010 USD [Member] Member currency:USD
2011 THB [Member] Member currency:THB
2012 TWD [Member] Member currency:TWD
2013 Japan, Yen Member currency:JPY
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2017 Cash and cash equivalents [Member] Member ln:FinancialAssetsCashAndCashEquivalentsMember
2018 Trade receivables [Member] Member ifrs-full:TradeReceivablesMember
2019 Other Receivables [member] Member ln:OtherReceivablesMember
2020 Time deposits [Member] Member ln:TimeDepositsMember
2021 Office security deposits [Member] Member ln:OfficeSecurityDepositsMember
2022 Available-for-sale financial assets [Member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
2023 Short-term Loans [member] Member ln:ShortTermLoansMember
2024 Guarantee deposit [member] Member ln:RentGuaranteeDepositMember
2025 Financial assets at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
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*

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*

 http://linecorp.com/taxonomy/role/DisclosureFinancialRiskManagementSensitivityAnalysisForInterestRateRiskOnProfitOrLossBeforeTaxAndShareholdersEquity
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2137 Non-trading Securities [member] Member ln:NontradingSecuritiesMember
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 http://linecorp.com/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformation
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2145 AI business CGU [member] Member ln:AIBusinessMember
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2152 Accumulated deficit [Member] Member ifrs-full:RetainedEarningsMember
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 http://linecorp.com/taxonomy/role/DisclosureFairValueMeasurementsReconciliationsOfAssetsMeasuredAtFairValueOnARecurringBasisCategorizedWithinLevel3
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*

 http://linecorp.com/taxonomy/role/DisclosureFairValueMeasurementsReconciliationsOfAssetsMeasuredAtFairValueOnARecurringBasisCategorizedWithinLevel3Parenthetical
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 http://linecorp.com/taxonomy/role/DisclosureShareBasedPaymentsAdditionalInformation
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2293 Share based payment award date [axis] Axis ln:ShareBasedPaymentAwardDateAxis
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2295 Grant Date One [member] Member ln:GrantDateOneMember
2296 Grant Date Two [member] Member ln:GrantDateTwoMember
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2298 Number of common shares represented by each stock option Concept (Shares) For Period ln:NumberOfSharesEntitledToAcquirePerStockOption
2299 Exercise price of outstanding stock options Concept (Monetary) As Of ifrs-full:ExercisePriceOfOutstandingShareOptions
2300 options granted during the years Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsGrantedInSharebasedPaymentArrangement
2301 Shares granted during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
2302 Stock options exercise price Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
2303 Stock option vesting condition Concept (Text/String) For Period ifrs-full:DescriptionOfVestingRequirementsForSharebasedPaymentArrangement
2304 Stock option vesting period Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
2305 Cancellations or modifications Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
2306 Voting rights under dual class structure of share capital Concept (Text/String) For Period ifrs-full:RightsPreferencesAndRestrictionsAttachingToClassOfShareCapital
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2308 Weighted average remaining contractual life Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
2309 Fair value of options granted in 2017 on a per-common-share basis Concept (Monetary) As Of ln:FairValueOfOptionsGrantedIn2017PerShare
2310 Stock options exercise price Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
2311 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
2312 Liabilities associated Cash-settled J-ESOP Concept (Monetary) As Of Credit ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
2313 Current liabilities from share based payment transactions Concept (Monetary) As Of Credit ln:CurrentLiabilitiesFromSharebasedPaymentTransactions
2314 Non current liabilities from share based payment transactions Concept (Monetary) As Of Credit ln:NoncurrentLiabilitiesFromSharebasedPaymentTransactions
2315 1169 - Disclosure - Share-Based Payments - Number and Weighted Average Exercise Prices of, and Movements in, Outstanding Stock Options on a Per-common-share Basis (Detail) Network

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2316 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table] Table

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2320 Class A stock options [member] Member ln:ClassAStockOptionsMember
2321 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
2322 Number of shares, Beginning balance Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
2323 Number of shares, Granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
2324 Number of shares, Forfeited Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
2325 Number of shares, Exercised Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
2326 Number of shares, Expired Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
2327 Number of shares, Conversion between Common Stock Options and Class A Stock Options Concept (Shares) For Period ln:NumberOfShareOptionsConverted
2328 Number of shares, Ending balance Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
2329 Number of shares, Exercisable Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
2330 Weighted average exercise prices, Beginning balance Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
2331 Weighted average exercise prices, Granted Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
2332 Weighted average exercise prices, Forfeited Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
2333 Weighted average exercise prices, Exercised Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
2334 Weighted average exercise prices, Expired Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement
2335 Weighted average exercise prices, Conversion between Common Stock Options and Class A Stock Options Concept (Monetary) For Period ln:WeightedAverageExercisePriceOfShareOptionsConversionOfCommonStockOptions
2336 Weighted average exercise prices, Ending balance Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
2337 Weighted average exercise prices, Exercisable Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
2338 1170 - Disclosure - Share-Based Payments - Number and Weighted Average Exercise Prices of, and Movements in, Outstanding Stock Options on a Per-common-share Basis (Parenthetical) (Detail) Network

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2339 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table] Table

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2340 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
2341 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
2342 Common stock options [member] Member ln:CommonStockOptionsMember
2343 Plan Name1 [axis] Axis ln:PlanName1Axis
2344 Plan Name 1 [domain] Member ln:PlanName1Domain
2345 Revocation due to waiver of rights [member] Member ln:RevocationDueToWaiverOfRightsMember
2346 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
2347 Number of forfeited stock options Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
2348 Weighted average share price at the date of exercise of stock options Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsInSharebasedPaymentArrangementExercisedDuringPeriodAtDateOfExercise
2349 1171 - Disclosure - Share-Based Payments - Summary of Exercise Price and Number for Shares of Options Outstanding (Detail) Network

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2350 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table] Table

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2351 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
2352 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
2353 December eighteen two thousand twelve [member] Member ln:DecemberEighteenTwoThousandTwelveMember
2354 December seventeen two thousand thirteen [member] Member ln:DecemberSeventeenTwoThousandThirteenMember
2355 February eight two thousand fourteen [member] Member ln:FebruaryEightTwoThousandFourteenMember
2356 August nine two thousand fourteen [member] Member ln:AugustNineTwoThousandFourteenMember
2357 November one two thousand fourteen [member] Member ln:NovemberOneTwoThousandFourteenMember
2358 February Four Two Thousand Fifteen [member] Member ln:FebruaryFourTwoThousandFifteenMember
2359 July Eighteen Two Thousand Seventeen [member] Member ln:JulyEighteenTwoThousandSeventeenMember
2360 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
2361 Exercise price (yen) Concept (Monetary) As Of ifrs-full:ExercisePriceOfOutstandingShareOptions
2362 Number (Shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
2363 1172 - Disclosure - Share-Based Payments - Inputs to Models Used for Deriving Fair Value of Stock Options Granted (Detail) Network

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*

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2364 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table] Table

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2365 Range [axis] Axis ifrs-full:RangeAxis
2366 Ranges [member] Member ifrs-full:RangesMember
2367 Bottom of Range [member] Member ifrs-full:BottomOfRangeMember
2368 Top of Range [member] Member ifrs-full:TopOfRangeMember
2369 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
2370 Dividend yield Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
2371 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
2372 Risk-free interest rate Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
2373 Expected life of stock options (years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
2374 Exercise price (yen) Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
2375 Fair value per common share at the grant date (yen) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
2376 Model used Concept (Text/String) For Period ifrs-full:DescriptionOfOptionPricingModelShareOptionsGranted
2377 1173 - Disclosure - Share-Based Payments - Expenses Recognized in Connection with Share-Based Payments (Detail) Network

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2378 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table] Table

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2379 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
2380 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
2381 E S O P equity settled [member] Member ln:ESOPEquitySettledMember
2382 E S O P cash settled [member] Member ln:ESOPCashSettledMember
2383 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
2384 Total expenses arising from equity-settled share-based payment transactions Concept (Monetary) For Period Debit ifrs-full:ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
2385 Total expenses arising from cash-settled share-based payment transactions Concept (Monetary) For Period Debit ifrs-full:ExpenseFromCashsettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
2386 1174 - Disclosure - Share-Based Payments - Number and Weighted Average Exercise Prices of, and Movements in, Outstanding Stock Other Options on a Per-common-share Basis (Detail) Network

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2387 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Table] Table

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2388 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
2389 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
2390 E S O P equity settled [member] Member ln:ESOPEquitySettledMember
2391 E S O P cash settled [member] Member ln:ESOPCashSettledMember
2392 Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
2393 Number of shares, Beginning balance Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
2394 Number of shares, Granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
2395 Number of shares, Forfeited Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
2396 Number of shares, Exercised Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
2397 Number of shares, Expired Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
2398 Number of shares, Ending balance Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
2399 Number of shares, Exercisable Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
2400 Number of shares, Beginning balance Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
2401 Number of shares, Granted Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
2402 Number of shares, Forfeited Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
2403 Number of shares, Exercised Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
2404 Number of shares, Expired Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
2405 Number of shares, Ending balance Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
2406 Number of shares, Exercisable Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
2407 1175 - Disclosure - Related Party Transactions - Significant Related Party Transactions and Outstanding Balances with Related Parties (Detail) Network

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2408 Disclosure of transactions between related parties [table] Table

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2410 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2411 Ultimate Parent Company [member] Member ifrs-full:ParentMember
2412 Subsidiary of ultimate parent company [member] Member ln:FellowSubsidiariesMember
2413 Associates [member] Member ifrs-full:AssociatesMember
2414 Director joongho shin [member] Member ln:DirectorJoonghoShinMember
2415 Director hae jin lee [member] Member ln:DirectorHaeJinLeeMember
2416 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
2417 Shareholder's equity [Member] Member ifrs-full:EquityMember
2418 Convertible bond with stock acquisition right [member] Member ln:ConvertibleBondWithStockAcquisitionRightMember
2419 Legal Entity [Axis] Axis dei:LegalEntityAxis
2420 Entity [Domain] Member dei:EntityDomain
2421 NAVER Corporation [member] Member ln:NaverCorporationMember
2422 NAVER Business Platform Corp. [member] Member ln:NaverBusinessPlatformCorpMember
2423 Snow Corporation [member] Member ln:SnowCorporationMember
2424 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2425 Transaction Concept (Text/String) For Period ifrs-full:DescriptionOfTransactionsWithRelatedParty
2426 Transaction amount Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
2427 Transaction amount Concept (Monetary) For Period Debit ifrs-full:ServicesReceivedRelatedPartyTransactions
2428 Transaction amount Concept (Monetary) For Period Credit ifrs-full:SalesOfPropertyAndOtherAssetsRelatedPartyTransactions
2429 Transaction amount Concept (Monetary) For Period ifrs-full:TransfersUnderFinanceAgreementsFromEntityRelatedPartyTransactions
2430 Transaction amount Concept (Monetary) For Period Credit ln:ExerciseOfStockOptions
2431 Outstanding receivable balances Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
2432 Outstanding payable balances Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
2433 1176 - Disclosure - Related Party Transactions - Significant Related Party Transactions and Outstanding Balances with Related Parties (Parenthetical) (Detail) Network

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2434 Disclosure of transactions between related parties [table] Table

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*

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2435 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2436 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2437 Ultimate Parent Company [member] Member ifrs-full:ParentMember
2438 Classes of entity's own equity instruments [axis] Axis ifrs-full:ClassesOfEntitysOwnEquityInstrumentsAxis
2439 Entity's own equity instruments [member] Member ifrs-full:EntitysOwnEquityInstrumentsMember
2440 Zero coupon convertible bonds due 2023 [member] Member ln:ZeroCouponConvertibleBondsDueTwoThousandAndTwentyThreeMember
2441 Zero coupon convertible bonds due 2025 [member] Member ln:ZeroCouponConvertibleBondsDueTwoThousandAndTwentyFiveMember
2442 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
2443 Shareholder's equity [Member] Member ifrs-full:EquityMember
2444 Convertible bond with stock acquisition right [member] Member ln:ConvertibleBondWithStockAcquisitionRightMember
2445 Legal Entity [Axis] Axis dei:LegalEntityAxis
2446 Entity [Domain] Member dei:EntityDomain
2447 NAVER Corporation [member] Member ln:NaverCorporationMember
2448 Unconsolidated subsidiaries [axis] Axis ifrs-full:UnconsolidatedSubsidiariesAxis
2449 Entity's total for unconsolidated subsidiaries [member] Member ifrs-full:EntitysTotalForUnconsolidatedSubsidiariesMember
2450 Camera Application Business (was operated by a wholly owned subsidiary, LINE Plus Corporation) [Member] Member ln:CameraApplicationBusinessMember
2451 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2452 Transaction amount Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
2453 Number of newly issued common shares received in exchange for transfer of business Concept (Shares) For Period ln:NumberOfSharesAcquiredInExchangeForSaleOfBusiness
2454 Convertible bonds issued Concept (Monetary) As Of Credit ln:ConvertibleBondsIssued
2455 Number of third party allotments Concept (Integer) For Period ln:NumberOfThirdPartyAllotments
2456 1177 - Disclosure - Related Party Transactions - Total Compensation of Key Management Personnel (Detail) Network

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2457 Implied Table Table

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2458 Disclosure of transactions between related parties [abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
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2460 Share-based payments(1) Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
2461 Other Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
2462 Total Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
2463 1178 - Disclosure - Business Combinations - Additional Information (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureBusinessCombinationsAdditionalInformation
2464 Disclosure of detailed information about business combination [table] Table

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2466 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2467 M.T. Burn Corporation [Member] Member ln:MTBurnCorporationMember
2468 Next floor group [member] Member ln:NextFloorGroupMember
2469 Five Inc [member] Member ln:FiveIncMember
2470 Next Floor Group And Five [member] Member ln:NextFloorGroupAndFiveMember
2471 Measurement [axis] Axis ifrs-full:MeasurementAxis
2472 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
2473 Fair value [Member] Member ifrs-full:AtFairValueMember
2474 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
2475 Percentage of voting shares acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
2476 Fair value of trade receivables Concept (Monetary) As Of Debit ln:TradeReceivablesNetRecognisedAsOfAcquisitionDate
2477 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
2478 Goodwill expected to be deductible for income tax purposes Concept (Monetary) As Of Debit ifrs-full:GoodwillExpectedDeductibleForTaxPurposes
2479 Revenues Concept (Monetary) For Period Credit ifrs-full:RevenueOfAcquiree
2480 (Loss)/profit for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfAcquiree
2481 Revenue as if acquisitions occurred at beginning of period Concept (Monetary) For Period Credit ifrs-full:RevenueOfCombinedEntity
2482 Profit (loss) as if acquisitions occurred at beginning of period Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfCombinedEntity
2483 Acquisition related transaction costs Concept (Monetary) For Period Debit ifrs-full:AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
2484 Loan receivables Concept (Monetary) As Of Credit ifrs-full:BorrowingsRecognisedAsOfAcquisitionDate
2485 Number of additional significant business combinations completed Concept (Integer) For Period ln:NumberOfAdditionalSignificantBusinessCombinationsCompleted
2486 1179 - Disclosure - Business Combinations - Fair Values of Identifiable Assets and Liabilities of M.T. Burn at Date of Acquisition (Detail) Network

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2487 Disclosure of detailed information about business combination [table] Table

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2489 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2490 M.T. Burn Corporation [Member] Member ln:MTBurnCorporationMember
2491 Measurement [axis] Axis ifrs-full:MeasurementAxis
2492 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
2493 Fair value [Member] Member ifrs-full:AtFairValueMember
2494 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
2495 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
2496 Trade receivables Concept (Monetary) As Of Debit ln:TradeReceivablesNetRecognisedAsOfAcquisitionDate
2497 Customer relationships Concept (Monetary) As Of Debit ifrs-full:CustomerrelatedIntangibleAssetsRecognisedAsOfAcquisitionDate
2498 Software Concept (Monetary) As Of Debit ln:SoftwareRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate
2499 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssetsRecognisedAsOfAcquisitionDate
2500 Other assets Concept (Monetary) As Of Debit ln:OtherAssetsRecognisedAsOfAcquisitionDate
2501 Total assets Concept (Monetary) As Of Debit ln:AssetsRecognisedAsOfAcquisitionDate
2502 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesRecognisedAsOfAcquisitionDate
2503 Other financial liabilities, current Concept (Monetary) As Of Debit ln:OtherCurrentFinancialLiabilitiesRecognisedAsOfAcquisitionDate
2504 Other financial liabilities, non-current Concept (Monetary) As Of Credit ln:OtherNonCurrentFinancialLiabilitiesRecognisedAsOfAcquisitionDate
2505 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate
2506 Other liabilities Concept (Monetary) As Of Credit ln:OtherLiabilitiesRecognisedAsOfAcquisitionDate
2507 Total liabilities Concept (Monetary) As Of Credit ln:LiabilitiesRecognisedAsOfAcquisitionDate
2508 Total identifiable net assets at fair value Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
2509 Non-controllinginterest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterestInAcquireeRecognisedAtAcquisitionDate
2510 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
2511 Total consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2512 Total consideration related to the acquisition Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2513 Net cash and cash equivalents acquired at the acquisition date Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
2514 Net cash flows on acquisition (included in cash flows from investing activities) Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
2515 1180 - Disclosure - Business Combinations - Fair Values of Identifiable Assets and Liabilities of NextFloor Group at Date of Acquisition (Detail) Network

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 http://linecorp.com/taxonomy/role/DisclosureBusinessCombinationsFairValuesOfIdentifiableAssetsAndLiabilitiesOfNextFloorGroupAtDateOfAcquisition
2516 Disclosure of detailed information about business combination [table] Table

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*

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2518 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2519 Next floor group [member] Member ln:NextFloorGroupMember
2520 Measurement [axis] Axis ifrs-full:MeasurementAxis
2521 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
2522 Fair value [Member] Member ifrs-full:AtFairValueMember
2523 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
2524 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
2525 Trade receivables Concept (Monetary) As Of Debit ln:TradeReceivablesNetRecognisedAsOfAcquisitionDate
2526 Other financial assets, current Concept (Monetary) As Of Debit ln:OtherCurrentFinancialAssetsRecognisedAsOfAcquisitionDate
2527 Other financial assets, non-current Concept (Monetary) As Of Debit ln:OtherNonCurrentFinancialAssetsRecognisedAsOfAcquisitionDate
2528 Property and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
2529 Software Concept (Monetary) As Of Debit ifrs-full:IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate
2530 Publishing rights Concept (Monetary) As Of Debit ln:PublishingRightsRecognisedAsOfAcquisitionDate
2531 Other intangible assets Concept (Monetary) As Of Debit ln:OtherIntangibleAssetsRecognisedAsOfAcquisitionDate
2532 Investments in associates Concept (Monetary) As Of Debit ln:InvestmentsInAssociatesRecognisedAsOfAcquisitionDate
2533 Other assets Concept (Monetary) As Of Debit ln:OtherAssetsRecognisedAsOfAcquisitionDate
2534 Total assets Concept (Monetary) As Of Debit ln:AssetsRecognisedAsOfAcquisitionDate
2535 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesRecognisedAsOfAcquisitionDate
2536 Other financial liabilities, current Concept (Monetary) As Of Debit ln:OtherCurrentFinancialLiabilitiesRecognisedAsOfAcquisitionDate
2537 Other financial liabilities, non-current Concept (Monetary) As Of Credit ln:OtherNonCurrentFinancialLiabilitiesRecognisedAsOfAcquisitionDate
2538 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate
2539 Other liabilities Concept (Monetary) As Of Credit ln:OtherLiabilitiesRecognisedAsOfAcquisitionDate
2540 Total liabilities Concept (Monetary) As Of Credit ln:LiabilitiesRecognisedAsOfAcquisitionDate
2541 Total identifiable net assets at fair value Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
2542 Non-controllinginterest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterestInAcquireeRecognisedAtAcquisitionDate
2543 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
2544 Total consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2545 Total consideration related to the acquisition Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2546 Debt equity swap Concept (Monetary) For Period Credit ln:DebtEquitySwap
2547 Net cash and cash equivalents acquired at the acquisition date Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
2548 Net cash flows on acquisition (included in cash flows from investing activities) Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
2549 1181 - Disclosure - Business Combinations - Fair Values of Identifiable Assets and Liabilities of FIVE Inc. at Date of Acquisition (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureBusinessCombinationsFairValuesOfIdentifiableAssetsAndLiabilitiesOfFIVEIncAtDateOfAcquisition
2550 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
2551 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
2552 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2553 Five Inc [member] Member ln:FiveIncMember
2554 Measurement [axis] Axis ifrs-full:MeasurementAxis
2555 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
2556 Fair value [Member] Member ifrs-full:AtFairValueMember
2557 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
2558 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
2559 Trade and other receivables, current Concept (Monetary) As Of Debit ln:TradeAndOtherReceivablesRecognisedAsOfAcquisitionDate
2560 Other financial assets, non-current Concept (Monetary) As Of Debit ln:OtherNonCurrentFinancialAssetsRecognisedAsOfAcquisitionDate
2561 Property and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
2562 Technology Concept (Monetary) As Of Debit ifrs-full:TechnologybasedIntangibleAssetsRecognisedAsOfAcquisitionDate
2563 Other assets Concept (Monetary) As Of Debit ln:OtherAssetsRecognisedAsOfAcquisitionDate
2564 Total assets Concept (Monetary) As Of Debit ln:AssetsRecognisedAsOfAcquisitionDate
2565 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesRecognisedAsOfAcquisitionDate
2566 Other financial liabilities, current Concept (Monetary) As Of Credit ln:OtherNonCurrentFinancialLiabilitiesRecognisedAsOfAcquisitionDate
2567 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate
2568 Other liabilities Concept (Monetary) As Of Credit ln:OtherLiabilitiesRecognisedAsOfAcquisitionDate
2569 Total liabilities Concept (Monetary) As Of Credit ln:LiabilitiesRecognisedAsOfAcquisitionDate
2570 Total identifiable net assets at fair value Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
2571 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
2572 Total consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2573 Total consideration related to the acquisition Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2574 Net cash and cash equivalents acquired at the acquisition date Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
2575 Net cash flows on acquisition (included in cash flows from investing activities) Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
2576 1182 - Disclosure - Principal Subsidiaries - Additional Information (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosurePrincipalSubsidiariesAdditionalInformation
2577 Implied Table Table

*

*

 implied:Table
2578 Disclosure of subsidiaries [abstract] Abstract ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesAbstract
2579 Number of consolidated subsidiaries Concept (Integer) For Period ln:NumberOfConsolidatedSubsidiaries
2580 1183 - Disclosure - Principal Subsidiaries - Information on Subsidiaries (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosurePrincipalSubsidiariesInformationOnSubsidiaries
2581 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2582 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2583 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2584 LINE Fukuoka Corp. [Member] Member ln:LINEFukuokaCorpMember
2585 LINE Pay Corporation [member] Member ln:LINEPayCorporationMember
2586 LINE GAME Global Gateway, L.P. [Member] Member ln:LINEGAMEGlobalGatewayLpMember
2587 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
2588 M T Burn Inc [member] Member ln:MTBurnIncMember
2589 Gatebox Inc [member] Member ln:GateboxIncMember
2590 STAIRS Corporation [member] Member ln:StairsCorporationMember
2591 Five Inc [member] Member ln:FiveIncMember
2592 LINE Financial Corporation [member] Member ln:LineFinancialCorporationMember
2593 LVC Corporation [member] Member ln:LvcCorporationMember
2594 LINE Part Time Job Ltd [member] Member ln:LINEPartTimeJobLtdMember
2595 LINE Ventures Global Limited Liability Partnership [member] Member ln:LineVenturesGlobalLimitedLiabilityPartnershipMember
2596 LINE Ventures Japan Limited Liability Partnership [member] Member ln:LineVenturesJapanLimitedLiabilityPartnershipMember
2597 LINE Digital Frontier Corporation [member] Member ln:LineDigitalFrontierCorporationMember
2598 LINE Plus Corporation [member] Member ln:LINEPlusCorporationMember
2599 LINE C&I Corporation [member] Member ln:LINECAndICorporationMember
2600 LINE Biz Plus Corporation [member] Member ln:LINEBizPlusCorporationMember
2601 LINE Friends Corporation [member] Member ln:LINEFriendsCorporationMember
2602 LINE Games Corporation [member] Member ln:LINEGamesCorporationMember
2603 NemusTech Co Ltd [member] Member ln:NemustechCoLtdMember
2604 Unblock Corporation [member] Member ln:UnblockCorporationMember
2605 LINE Taiwan Limited [member] Member ln:LINETaiwanLimitedMember
2606 Line Biz+ Taiwan Limited [Member] Member ln:LineBizPlusTaiwanLimitedMember
2607 LFG Holding limited [member] Member ln:LFGHoldingLimitedMember
2608 LINE Financial Asia Corporation Limited [member] Member ln:LineFinancialAsiaCorporationLimitedMember
2609 LINE Company (Thailand) Limited [member] Member ln:LINECompanyThailandLimitedMember
2610 LINE SOUTHEAST ASIA CORP.PTE.LTD [member] Member ln:LineSoutheastAsiaCorpPteLtdMember
2611 LINE VIETNAM JOINT STOCK COMPANY [member] Member ln:LineVietnamJointStockCompanyMember
2612 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2613 Name Concept (Text/String) For Period ifrs-full:NameOfSubsidiary
2614 Primary business activities Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
2615 Country of incorporation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
2616 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2617 1184 - Disclosure - Principal Subsidiaries - Information on Subsidiaries (Parenthetical) (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosurePrincipalSubsidiariesInformationOnSubsidiariesParenthetical
2618 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2619 Legal Entity [Axis] Axis dei:LegalEntityAxis
2620 Entity [Domain] Member dei:EntityDomain
2621 SoftBank Corp [member] Member ln:SoftbankCorpMember
2622 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2623 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2624 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
2625 LINE Financial Corporation [member] Member ln:LineFinancialCorporationMember
2626 LINE Part Time Job Ltd [member] Member ln:LINEPartTimeJobLtdMember
2627 LINE Digital Frontier Corporation [member] Member ln:LineDigitalFrontierCorporationMember
2628 LINE Games Corporation [member] Member ln:LINEGamesCorporationMember
2629 NemusTech Co Ltd [member] Member ln:NemustechCoLtdMember
2630 Unblock Corporation [member] Member ln:UnblockCorporationMember
2631 LINE Company (Thailand) Limited [member] Member ln:LINECompanyThailandLimitedMember
2632 LINE VIETNAM JOINT STOCK COMPANY [member] Member ln:LineVietnamJointStockCompanyMember
2633 LINE Asia Corporation Limited [member] Member ln:LineAsiaCorporationLimitedMember
2634 Income Statement Location 1 [axis] Axis ln:IncomeStatementLocation1Axis
2635 Income Statement Location 1 [member] Member ln:IncomeStatementLocationMember
2636 Other operating income [member] Member ln:OtherOperatingIncomeMember
2637 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2638 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2639 Percentage of voting power held in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfVotingPowerHeldInSubsidiary
2640 Gain on loss of control of subsidiaries Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
2641 Proportion of Subsidiary's share capital amount to Group's capital amount Concept (Percent) For Period ln:ProportionOfSubsidiaryShareCapitalAmountToGroupCapitalAmount
2642 1185 - Disclosure - Principal Subsidiaries - Summarized Financial Information for the Subsidiaries Which the Group Recognize Non-controlling Interest (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosurePrincipalSubsidiariesSummarizedFinancialInformationForTheSubsidiariesWhichTheGroupRecognizeNoncontrollingInterest
2643 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2644 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2645 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2646 M T Burn Inc [member] Member ln:MTBurnIncMember
2647 Gatebox Inc [member] Member ln:GateboxIncMember
2648 LINE Company (Thailand) Limited [member] Member ln:LINECompanyThailandLimitedMember
2649 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2650 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
2651 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
2652 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
2653 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
2654 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
2655 Accumulated no-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
2656 Non-controlling interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
2657 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2658 Profit/(Loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
2659 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
2660 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2661 Loss attributable to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
2662 Dividend paid to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
2663 Cash flows from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
2664 Cash flows from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
2665 Cash flows from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
2666 Net (decrease)/increase in cash and cash equivalent Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
2667 1186 - Disclosure - Principal Subsidiaries - Summarized Financial Information for the Subsidiaries Which the Group Recognize Non-controlling Interest (Parenthetical) (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosurePrincipalSubsidiariesSummarizedFinancialInformationForTheSubsidiariesWhichTheGroupRecognizeNoncontrollingInterestParenthetical
2668 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2669 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2670 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2671 LINE Company (Thailand) Limited [member] Member ln:LINECompanyThailandLimitedMember
2672 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2673 Non-controlling interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
2674 Proportion of voting rights held in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfVotingRightsHeldByNoncontrollingInterests
2675 1187 - Disclosure - Investments in Associates and Joint Ventures - Details of Investments in Significant Associates and Joint Ventures (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesDetailsOfInvestmentsInSignificantAssociatesAndJointVentures
2676 Disclosure of Investments in Associates and Joint Ventures [table] Table

*

*

 ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesTable
2677 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
2678 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
2679 Drama & Company [member] Member ln:DramaAndCompanyMember
2680 RABBIT-LINE PAY COMPANY LIMITED [member] Member ln:RABBITLINEPAYCCOMPANYLIMITEDMember
2681 Lantu Games Limited [member] Member ln:LantuGamesLimitedMember
2682 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
2683 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
2684 LINE Games Corporation [member] Member ln:LINEGamesCorporationMember
2685 Snow Corporation [member] Member ln:SnowCorporationMember
2686 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
2687 FOLIO Co Ltd [member] Member ln:FOLIOCoLtdMember
2688 Yume no Machi Souzou Iinkai Co., Ltd. [member] Member ln:YumeNoMachiSouzouIinkaiCoLtdMember
2689 K-Fund I [member] Member ln:KFundIMember
2690 Venture Republic Inc [member] Member ln:VentureRepublicIncMember
2691 LINE MUSIC Corporation [member] Member ln:LINEMUSICCorporationMember
2692 Disclosure of investments in associates and joint ventures [line items] LineItems ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesLineItems
2693 Name of associate Concept (Text/String) For Period ifrs-full:NameOfAssociate
2694 Name of joint venture Concept (Text/String) For Period ifrs-full:NameOfJointVenture
2695 Primary business activities Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
2696 Country of incorporation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfAssociate
2697 Country of incorporation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOfJointVenture
2698 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
2699 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
2700 Carrying amount Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
2701 Carrying amount Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
2702 1188 - Disclosure - Investments in Associates and Joint Ventures - Details of Investments in Significant Associates and Joint Ventures (Parenthetical) (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesDetailsOfInvestmentsInSignificantAssociatesAndJointVenturesParenthetical
2703 Disclosure of Investments in Associates and Joint Ventures [table] Table

*

*

 ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesTable
2704 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
2705 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
2706 Drama & Company [member] Member ln:DramaAndCompanyMember
2707 RABBIT-LINE PAY COMPANY LIMITED [member] Member ln:RABBITLINEPAYCCOMPANYLIMITEDMember
2708 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
2709 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
2710 LINE Games Corporation [member] Member ln:LINEGamesCorporationMember
2711 Snow Corporation [member] Member ln:SnowCorporationMember
2712 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
2713 FOLIO Co Ltd [member] Member ln:FOLIOCoLtdMember
2714 Venture Republic Inc [member] Member ln:VentureRepublicIncMember
2715 LINE MUSIC Corporation [member] Member ln:LINEMUSICCorporationMember
2716 Disclosure of investments in associates and joint ventures [line items] LineItems ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesLineItems
2717 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
2718 Percentage of voting shares acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
2719 Percentage of ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
2720 1189 - Disclosure - Investments in Associates and Joint Ventures - Summary of Financial Information on Investment in Associates (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesSummaryOfFinancialInformationOnInvestmentInAssociates
2721 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
2722 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
2723 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
2724 Snow Corporation [member] Member ln:SnowCorporationMember
2725 LINE Mobile Corporation [member] Member ln:LINEMobileCorporationMember
2726 Aggregated individually immaterial associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
2727 Expense by Nature [line items] LineItems ln:ExpenseByNatureLineItems
2728 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
2729 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
2730 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
2731 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
2732 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
2733 Proportion of the Group's ownership Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
2734 Group's share of equity Concept (Monetary) As Of Debit ln:NetAssetsOwnershipInterestOfAssociates
2735 Goodwill and other adjustments Concept (Monetary) As Of Debit ln:GoodwillAndOtherAdjustments
2736 Carrying amount of the interests Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
2737 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2738 Loss for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
2739 Other comprehensive income for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
2740 Comprehensive (loss)/income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2741 Group's share of loss for the year Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
2742 1190 - Disclosure - Investments in Associates and Joint Ventures - Additional Information (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesAdditionalInformation
2743 Implied Table Table

*

*

 implied:Table
2744 Disclosure Of Investments In Associates And Joint Ventures [abstract] Abstract ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesAbstract
2745 Contingent liabilities incurred in relation to interests in associates Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesIncurredInRelationToInterestsInAssociates
2746 Contingent liabilities incurred in relation to interests in joint ventures Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesIncurredByVenturerInRelationToInterestsInJointVentures
2747 Commitments in relation to joint ventures Concept (Monetary) As Of Credit ifrs-full:CommitmentsInRelationToJointVentures
2748 1191 - Disclosure - Investments in Associates and Joint Ventures - Summary of Financial Information on Investment in Joint Ventures (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureInvestmentsInAssociatesAndJointVenturesSummaryOfFinancialInformationOnInvestmentInJointVentures
2749 Disclosure of Investments in Associates and Joint Ventures [table] Table

*

*

 ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesTable
2750 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
2751 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
2752 Joint Ventures [Member] Member ifrs-full:JointVenturesMember
2753 Disclosure of investments in associates and joint ventures [line items] LineItems ln:DisclosureOfInvestmentsInAssociatesAndJointVenturesLineItems
2754 Carrying amount of the interests Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
2755 Loss for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
2756 Other comprehensive income for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
2757 Total comprehensive loss for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2758 1192 - Disclosure - Subsequent Events - Additional Information (Detail) Network

*

*

 http://linecorp.com/taxonomy/role/DisclosureSubsequentEventsAdditionalInformation
2759 Disclosure of non-adjusting events after reporting period [table] Table

*

*

 ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
2760 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
2761 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
2762 Potential ordinary share transactions [member] Member ifrs-full:PotentialOrdinaryShareTransactionsMember
2763 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
2764 Share-based compensation [Member] Member ifrs-full:SharebasedPaymentArrangementsMember
2765 Issuance of stock warrant (Stock option) to directors [member] Member ln:IssuanceOfStockWarrantStockOptionToDirectorsMember
2766 Issuance of stock warrant (Stock option) to outside directors [member] Member ln:IssuanceOfStockWarrantStockOptionToOutsideDirectorsMember
2767 Range [axis] Axis ifrs-full:RangeAxis
2768 Ranges [member] Member ifrs-full:RangesMember
2769 Top of Range [member] Member ifrs-full:TopOfRangeMember
2770 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
2771 Number of candidates Concept (Text/String) For Period ln:NumberOfCandidates
2772 Maximum number of shares to be issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
2773 Description of exercise price Concept (Text/String) For Period ln:DescriptionOnExercisePriceOfShareOption
2774 Exercise period for stock options Concept (Text/String) For Period ln:DescriptionOfExercisePeriodOfShareBasedArrangement

*

*