| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 5951000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-12-31 | esef |
| cash_and_equivalents | {"amount": 9375000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-12-31 | esef |
| cash_and_equivalents | {"amount": 9738000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2018-12-31 | esef |
| cashflow_financing | {"amount": -7931000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2020-12-31 | esef |
| cashflow_financing | {"amount": -1628000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2019-12-31 | esef |
| cashflow_investing | {"amount": -889000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2020-12-31 | esef |
| cashflow_investing | {"amount": 103000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2019-12-31 | esef |
| cashflow_operating | {"amount": 5768000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2020-12-31 | esef |
| cashflow_operating | {"amount": 1024000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2019-12-31 | esef |
| controlled_by | {"lei": "984500CE58365CB10V25", "meaning": "oberste Konsolidierung (Konzernspitze)", "enti | | gleif |
| entity_legal_form | {"value": "6CQN", "elf_code": "6CQN"} | | gleif |
| headquarters_address | {"city": "Praha", "region": "CZ-10", "street": "Evropská 2690/17", "country": "CZ", "forma | | gleif |
| ifrs:AcquisitionAndAdministrationExpenseRelatedToInsuranceContracts | {"amount": 3000000.0} | 2020-12-31 | esef |
| ifrs:AcquisitionAndAdministrationExpenseRelatedToInsuranceContracts | {"amount": 4000000.0} | 2019-12-31 | esef |
| ifrs:AdditionalPaidinCapital | {"amount": 80000000.0} | 2020-12-31 | esef |
| ifrs:AdditionalPaidinCapital | {"amount": 80000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanks | {"amount": 21000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanks | {"amount": -222000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": 3657000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": -1859000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": 99000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": -75000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables | {"amount": 5000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables | {"amount": 5000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 199000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 188000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"amount": -1000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates | {"amount": -3000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 2418000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": -1816000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": -1410000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": 1528000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": 200000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": -269000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables | {"amount": -185000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables | {"amount": 26000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForInterestExpense | {"amount": 1316000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForInterestExpense | {"amount": 1665000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForInterestIncome | {"amount": 4347000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForInterestIncome | {"amount": 5514000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": 1000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": 2000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForUnrealisedForeignExchangeLossesGains | {"amount": 280000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForUnrealisedForeignExchangeLossesGains | {"amount": 1018000000.0} | 2019-12-31 | esef |
| ifrs:Assets | {"amount": 24760000000.0} | 2020-12-31 | esef |
| ifrs:Assets | {"amount": 35060000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 5951000000.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 9375000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 9738000000.0} | 2018-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 5000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -7931000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -1628000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -889000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": 103000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 5768000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 1024000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 23000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 84000000.0} | 2019-12-31 | esef |
| ifrs:ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries | {"amount": 1000000.0} | 2020-12-31 | esef |
| ifrs:ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": -927000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 661000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": -112000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 37000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": -815000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 624000000.0} | 2019-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 16000000.0} | 2020-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 26000000.0} | 2019-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 15000000.0} | 2020-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 39000000.0} | 2019-12-31 | esef |
| ifrs:DebtSecurities | {"amount": 1683000000.0} | 2020-12-31 | esef |
| ifrs:DebtSecurities | {"amount": 2389000000.0} | 2019-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 640000000.0} | 2020-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 426000000.0} | 2019-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 8000000.0} | 2020-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 20000000.0} | 2019-12-31 | esef |
| ifrs:DepositsFromBanks | {"amount": 6924000000.0} | 2020-12-31 | esef |
| ifrs:DepositsFromBanks | {"amount": 13291000000.0} | 2019-12-31 | esef |
| ifrs:DepositsFromCustomers | {"amount": 11640000000.0} | 2020-12-31 | esef |
| ifrs:DepositsFromCustomers | {"amount": 14017000000.0} | 2019-12-31 | esef |
| ifrs:DepreciationAndAmortisationExpense | {"amount": 199000000.0} | 2020-12-31 | esef |
| ifrs:DepreciationAndAmortisationExpense | {"amount": 188000000.0} | 2019-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 5000000.0} | 2020-12-31 | esef |
| ifrs:DividendsPaidClassifiedAsFinancingActivities | {"amount": 5000000.0} | 2019-12-31 | esef |
| ifrs:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities | {"amount": 5000000.0} | 2020-12-31 | esef |
| ifrs:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParent | {"amount": 5000000.0} | 2020-12-31 | esef |
| ifrs:DividendsRecognisedAsDistributionsToOwnersOfParent | {"amount": 5000000.0} | 2019-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": -372000000.0} | 2020-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 138000000.0} | 2019-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 935000000.0} | 2020-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 1118000000.0} | 2019-12-31 | esef |
| ifrs:Equity | {"amount": 2852000000.0} | 2020-12-31 | esef |
| ifrs:Equity | {"amount": 3777000000.0} | 2019-12-31 | esef |
| ifrs:Equity | {"amount": 2970000000.0} | 2018-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 24760000000.0} | 2020-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 35060000000.0} | 2019-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 2646000000.0} | 2020-12-31 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 3471000000.0} | 2019-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 185000000.0} | 2020-12-31 | esef |
| ifrs:FeeAndCommissionExpense | {"amount": 197000000.0} | 2019-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 447000000.0} | 2020-12-31 | esef |
| ifrs:FeeAndCommissionIncome | {"amount": 675000000.0} | 2019-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 262000000.0} | 2020-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 478000000.0} | 2019-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 635000000.0} | 2020-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 353000000.0} | 2019-12-31 | esef |
| ifrs:GainRecognisedInBargainPurchaseTransaction | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:GainRecognisedInBargainPurchaseTransaction | {"amount": 38000000.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": -1000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": -2000000.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfInvestments | {"amount": -1000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfInvestments | {"amount": -3000000.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 13000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 33000000.0} | 2019-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 2406000000.0} | 2020-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 1816000000.0} | 2019-12-31 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 146000000.0} | 2020-12-31 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 303000000.0} | 2019-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": -122000000.0} | 2020-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 247000000.0} | 2019-12-31 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome | {"amount": 1000000.0} | 2020-12-31 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome | {"amount": -5000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": -3052000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": -501000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl | {"amount": -1000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl | {"amount": -55000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughDisposalOfSubsidiary | {"amount": 7000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughOtherContributionsByOwners | {"amount": 13000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughOtherContributionsByOwners | {"amount": 25000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransactionsWithOwners | {"amount": 2000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransactionsWithOwners | {"amount": 146000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransfersAndOtherChangesEquity | {"amount": -5000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransferToStatutoryReserve | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransferToStatutoryReserve | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 403000000.0} | 2020-12-31 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 389000000.0} | 2019-12-31 | esef |
| ifrs:InterestExpense | {"amount": 1316000000.0} | 2020-12-31 | esef |
| ifrs:InterestExpense | {"amount": 1665000000.0} | 2019-12-31 | esef |
| ifrs:InterestPaidClassifiedAsFinancingActivities | {"amount": 1345000000.0} | 2020-12-31 | esef |
| ifrs:InterestPaidClassifiedAsFinancingActivities | {"amount": 1553000000.0} | 2019-12-31 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 4343000000.0} | 2020-12-31 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 5942000000.0} | 2019-12-31 | esef |
| ifrs:InterestRevenueExpense | {"amount": 3031000000.0} | 2020-12-31 | esef |
| ifrs:InterestRevenueExpense | {"amount": 3849000000.0} | 2019-12-31 | esef |
| ifrs:InvestmentAccountedForUsingEquityMethod | {"amount": 32000000.0} | 2020-12-31 | esef |
| ifrs:InvestmentAccountedForUsingEquityMethod | {"amount": 48000000.0} | 2019-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:IssueOfEquity | {"amount": 181000000.0} | 2019-12-31 | esef |
| ifrs:Liabilities | {"amount": 21908000000.0} | 2020-12-31 | esef |
| ifrs:Liabilities | {"amount": 31283000000.0} | 2019-12-31 | esef |
| ifrs:LoansAndAdvancesToBanks | {"amount": 466000000.0} | 2020-12-31 | esef |
| ifrs:LoansAndAdvancesToBanks | {"amount": 553000000.0} | 2019-12-31 | esef |
| ifrs:LoansAndAdvancesToCustomers | {"amount": 13943000000.0} | 2020-12-31 | esef |
| ifrs:LoansAndAdvancesToCustomers | {"amount": 21396000000.0} | 2019-12-31 | esef |
| ifrs:MiscellaneousOtherOperatingExpense | {"amount": 489000000.0} | 2020-12-31 | esef |
| ifrs:MiscellaneousOtherOperatingExpense | {"amount": 569000000.0} | 2019-12-31 | esef |
| ifrs:NetEarnedPremium | {"amount": 18000000.0} | 2020-12-31 | esef |
| ifrs:NetEarnedPremium | {"amount": 21000000.0} | 2019-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 206000000.0} | 2020-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 306000000.0} | 2019-12-31 | esef |
| ifrs:OtherAdjustmentsForNoncashItems | {"amount": 17000000.0} | 2020-12-31 | esef |
| ifrs:OtherAdjustmentsForNoncashItems | {"amount": -3000000.0} | 2019-12-31 | esef |
| ifrs:OtherAdjustmentsForWhichCashEffectsAreInvestingOrFinancingCashFlow | {"amount": -24000000.0} | 2020-12-31 | esef |
| ifrs:OtherAdjustmentsForWhichCashEffectsAreInvestingOrFinancingCashFlow | {"amount": -8000000.0} | 2019-12-31 | esef |
| ifrs:OtherAssets | {"amount": 249000000.0} | 2020-12-31 | esef |
| ifrs:OtherAssets | {"amount": 354000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncome | {"amount": -372000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncome | {"amount": 154000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 10000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome | {"amount": 33000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments | {"amount": 3000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation | {"amount": -381000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation | {"amount": 132000000.0} | 2019-12-31 | esef |
| ifrs:OtherFinancialAssets | {"amount": 2775000000.0} | 2020-12-31 | esef |
| ifrs:OtherFinancialAssets | {"amount": 2105000000.0} | 2019-12-31 | esef |
| ifrs:OtherGainsLosses | {"amount": -28000000.0} | 2020-12-31 | esef |
| ifrs:OtherGainsLosses | {"amount": -18000000.0} | 2019-12-31 | esef |
| ifrs:OtherIncome | {"amount": 83000000.0} | 2020-12-31 | esef |
| ifrs:OtherIncome | {"amount": 143000000.0} | 2019-12-31 | esef |
| ifrs:OtherIndividuallyImmaterialComponentsOfOtherComprehensiveIncomeNetOfTax | {"amount": 7000000.0} | 2020-12-31 | esef |
| ifrs:OtherIndividuallyImmaterialComponentsOfOtherComprehensiveIncomeNetOfTax | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities | {"amount": 18000000.0} | 2020-12-31 | esef |
| ifrs:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities | {"amount": 87000000.0} | 2019-12-31 | esef |
| ifrs:OtherProvisions | {"amount": 45000000.0} | 2020-12-31 | esef |
| ifrs:OtherProvisions | {"amount": 62000000.0} | 2019-12-31 | esef |
| ifrs:OtherReserves | {"amount": -879000000.0} | 2020-12-31 | esef |
| ifrs:OtherReserves | {"amount": -542000000.0} | 2019-12-31 | esef |
| ifrs:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities | {"amount": 45000000.0} | 2020-12-31 | esef |
| ifrs:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities | {"amount": 45000000.0} | 2019-12-31 | esef |
| ifrs:PaymentsOfOtherEquityInstruments | {"amount": 15000000.0} | 2020-12-31 | esef |
| ifrs:PaymentsOfOtherEquityInstruments | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:ProceedsFromContributionsOfNoncontrollingInterests | {"amount": 13000000.0} | 2020-12-31 | esef |
| ifrs:ProceedsFromContributionsOfNoncontrollingInterests | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets | {"amount": 16000000.0} | 2020-12-31 | esef |