| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 20512000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-12-31 | esef |
| cash_and_equivalents | {"amount": 13518000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2019-12-31 | esef |
| cash_and_equivalents | {"amount": 23247000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2018-12-31 | esef |
| cashflow_financing | {"amount": -2880000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2020-12-31 | esef |
| cashflow_financing | {"amount": -9616000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2019-12-31 | esef |
| cashflow_investing | {"amount": -2888000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2020-12-31 | esef |
| cashflow_investing | {"amount": -2471000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2019-12-31 | esef |
| cashflow_operating | {"amount": 2436000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2019-12-31 | esef |
| cashflow_operating | {"amount": 12475000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2020-12-31 | esef |
| controlled_by | {"lei": "O2RNE8IBXP4R0TD8PU41", "meaning": "oberste Konsolidierung (Konzernspitze)", "enti | | gleif |
| entity_legal_form | {"value": "6CQN", "elf_code": "6CQN"} | | gleif |
| headquarters_address | {"city": "Praha 1", "region": "CZ-10", "street": "Na Příkopě 33 čp. 969", "country": "CZ", | | gleif |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": 283000000.0} | 2020-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets | {"amount": -374000000.0} | 2019-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": 2721000000.0} | 2020-12-31 | esef |
| ifrs:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities | {"amount": -4105000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": 773000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": -858000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanks | {"amount": -15871000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanks | {"amount": 12593000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": -37010000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": -23338000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": 132000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": 685000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 2706000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForDepreciationAndAmortisationExpense | {"amount": 2451000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives | {"amount": 2130000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives | {"amount": -1345000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromBanks | {"amount": -8561000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromBanks | {"amount": -1849000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": 83536000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": 9191000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": -411000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading | {"amount": 1299000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherLiabilities | {"amount": -1223000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherLiabilities | {"amount": -1293000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": 15000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets | {"amount": -16000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 214000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod | {"amount": 366000000.0} | 2019-12-31 | esef |
| ifrs:AdjustmentsForUnrealisedForeignExchangeLossesGains | {"amount": -361000000.0} | 2020-12-31 | esef |
| ifrs:AdjustmentsForUnrealisedForeignExchangeLossesGains | {"amount": 183000000.0} | 2019-12-31 | esef |
| ifrs:Assets | {"amount": 1167131000000.0} | 2020-12-31 | esef |
| ifrs:Assets | {"amount": 1077334000000.0} | 2019-12-31 | esef |
| ifrs:BasicAndDilutedEarningsLossPerShare | {"amount": 43.19} | 2020-12-31 | esef |
| ifrs:BasicAndDilutedEarningsLossPerShare | {"amount": 78.9} | 2019-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 23547000000.0} | 2020-12-31 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 17744000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 20512000000.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 13518000000.0} | 2019-12-31 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 23247000000.0} | 2018-12-31 | esef |
| ifrs:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -2880000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -9616000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -2888000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -2471000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 12475000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 2436000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperations | {"amount": 16072000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperations | {"amount": 5585000000.0} | 2019-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital | {"amount": 16558000000.0} | 2020-12-31 | esef |
| ifrs:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital | {"amount": 22859000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 8091000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncome | {"amount": 15452000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 146000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 271000000.0} | 2019-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 7945000000.0} | 2020-12-31 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 15181000000.0} | 2019-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 1183000000.0} | 2020-12-31 | esef |
| ifrs:CurrentTaxAssets | {"amount": 30000000.0} | 2019-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 50000000.0} | 2020-12-31 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 363000000.0} | 2019-12-31 | esef |
| ifrs:DatedSubordinatedLiabilities | {"amount": 2629000000.0} | 2020-12-31 | esef |
| ifrs:DatedSubordinatedLiabilities | {"amount": 2546000000.0} | 2019-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 78000000.0} | 2020-12-31 | esef |
| ifrs:DeferredTaxAssets | {"amount": 70000000.0} | 2019-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 708000000.0} | 2020-12-31 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 840000000.0} | 2019-12-31 | esef |
| ifrs:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 2730000000.0} | 2020-12-31 | esef |
| ifrs:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss | {"amount": 2458000000.0} | 2019-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 13317000000.0} | 2020-12-31 | esef |
| ifrs:DerivativeFinancialAssetsHeldForHedging | {"amount": 9996000000.0} | 2019-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 8760000000.0} | 2020-12-31 | esef |
| ifrs:DerivativeFinancialLiabilitiesHeldForHedging | {"amount": 10283000000.0} | 2019-12-31 | esef |
| ifrs:DividendsPaid | {"amount": 10269000000.0} | 2019-12-31 | esef |
| ifrs:DividendsPaid | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities | {"amount": 9599000000.0} | 2019-12-31 | esef |
| ifrs:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities | {"amount": 576000000.0} | 2019-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsInvestingActivities | {"amount": 6000000.0} | 2020-12-31 | esef |
| ifrs:DividendsReceivedClassifiedAsInvestingActivities | {"amount": 241000000.0} | 2019-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 287000000.0} | 2020-12-31 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": -78000000.0} | 2019-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 7650000000.0} | 2020-12-31 | esef |
| ifrs:EmployeeBenefitsExpense | {"amount": 7781000000.0} | 2019-12-31 | esef |
| ifrs:Equity | {"amount": 117058000000.0} | 2020-12-31 | esef |
| ifrs:Equity | {"amount": 108635000000.0} | 2019-12-31 | esef |
| ifrs:Equity | {"amount": 103329000000.0} | 2018-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 1167131000000.0} | 2020-12-31 | esef |
| ifrs:EquityAndLiabilities | {"amount": 1077334000000.0} | 2019-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 5210000000.0} | 2020-12-31 | esef |
| ifrs:FeeAndCommissionIncomeExpense | {"amount": 5983000000.0} | 2019-12-31 | esef |
| ifrs:FinancialAssetsAtAmortisedCost | {"amount": 1035401000000.0} | 2020-12-31 | esef |
| ifrs:FinancialAssetsAtAmortisedCost | {"amount": 963401000000.0} | 2019-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome | {"amount": 40198000000.0} | 2020-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome | {"amount": 36204000000.0} | 2019-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": 279000000.0} | 2020-12-31 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:FinancialLiabilitiesAtAmortisedCost | {"amount": 996594000000.0} | 2020-12-31 | esef |
| ifrs:FinancialLiabilitiesAtAmortisedCost | {"amount": 921725000000.0} | 2019-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 25170000000.0} | 2020-12-31 | esef |
| ifrs:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 23725000000.0} | 2019-12-31 | esef |
| ifrs:GainOnRecoveryOfLoansAndAdvancesPreviouslyWrittenOff | {"amount": 123000000.0} | 2020-12-31 | esef |
| ifrs:GainOnRecoveryOfLoansAndAdvancesPreviouslyWrittenOff | {"amount": 519000000.0} | 2019-12-31 | esef |
| ifrs:GainRecognisedInBargainPurchaseTransaction | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:GainRecognisedInBargainPurchaseTransaction | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesNetOfTax | {"amount": 247000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnCashFlowHedgesNetOfTax | {"amount": 533000000.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfNoncurrentAssets | {"amount": -15000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnDisposalsOfNoncurrentAssets | {"amount": 17000000.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": -312000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue | {"amount": 0.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 4974000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 10973000000.0} | 2019-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax | {"amount": 73000000.0} | 2020-12-31 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax | {"amount": 212000000.0} | 2019-12-31 | esef |
| ifrs:GeneralAndAdministrativeExpense | {"amount": 4615000000.0} | 2020-12-31 | esef |
| ifrs:GeneralAndAdministrativeExpense | {"amount": 4693000000.0} | 2019-12-31 | esef |
| ifrs:Goodwill | {"amount": 3752000000.0} | 2020-12-31 | esef |
| ifrs:Goodwill | {"amount": 3752000000.0} | 2019-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 4701000000.0} | 2020-12-31 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": -53000000.0} | 2019-12-31 | esef |
| ifrs:IncomeTaxesPaidRefundClassifiedAsOperatingActivities | {"amount": 3597000000.0} | 2020-12-31 | esef |
| ifrs:IncomeTaxesPaidRefundClassifiedAsOperatingActivities | {"amount": 3149000000.0} | 2019-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 1985000000.0} | 2020-12-31 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 3419000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalents | {"amount": 6707000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalents | {"amount": -9651000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseInWorkingCapital | {"amount": 486000000.0} | 2020-12-31 | esef |
| ifrs:IncreaseDecreaseInWorkingCapital | {"amount": 17274000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransactionsWithOwners | {"amount": -10146000000.0} | 2019-12-31 | esef |
| ifrs:IncreaseDecreaseThroughTransactionsWithOwners | {"amount": 332000000.0} | 2020-12-31 | esef |
| ifrs:IntangibleAssetsOtherThanGoodwill | {"amount": 6898000000.0} | 2020-12-31 | esef |
| ifrs:IntangibleAssetsOtherThanGoodwill | {"amount": 6018000000.0} | 2019-12-31 | esef |
| ifrs:InterestExpense | {"amount": 15125000000.0} | 2020-12-31 | esef |
| ifrs:InterestExpense | {"amount": 20415000000.0} | 2019-12-31 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 14383000000.0} | 2020-12-31 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 20404000000.0} | 2019-12-31 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 37258000000.0} | 2020-12-31 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 45027000000.0} | 2019-12-31 | esef |
| ifrs:InterestRevenueExpense | {"amount": 21360000000.0} | 2020-12-31 | esef |
| ifrs:InterestRevenueExpense | {"amount": 23591000000.0} | 2019-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 19005000000.0} | 2020-12-31 | esef |
| ifrs:IssuedCapital | {"amount": 19005000000.0} | 2019-12-31 | esef |
| ifrs:Liabilities | {"amount": 1050073000000.0} | 2020-12-31 | esef |
| ifrs:Liabilities | {"amount": 968699000000.0} | 2019-12-31 | esef |
| ifrs:LiabilitiesDueToCentralBanks | {"amount": 0.0} | 2020-12-31 | esef |
| ifrs:LiabilitiesDueToCentralBanks | {"amount": 1000000.0} | 2019-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 3242000000.0} | 2020-12-31 | esef |
| ifrs:NoncontrollingInterests | {"amount": 3095000000.0} | 2019-12-31 | esef |
| ifrs:OperatingExpense | {"amount": 14995000000.0} | 2020-12-31 | esef |
| ifrs:OperatingExpense | {"amount": 14932000000.0} | 2019-12-31 | esef |
| ifrs:OtherAdjustmentsForNoncashItems | {"amount": 119000000.0} | 2020-12-31 | esef |
| ifrs:OtherAdjustmentsForNoncashItems | {"amount": -398000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncome | {"amount": -208000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncome | {"amount": 280000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation | {"amount": 26000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation | {"amount": -12000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments | {"amount": -284000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments | {"amount": 133000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans | {"amount": -15000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans | {"amount": -83000000.0} | 2019-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations | {"amount": -24000000.0} | 2020-12-31 | esef |
| ifrs:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations | {"amount": 9000000.0} | 2019-12-31 | esef |
| ifrs:OtherIncome | {"amount": 204000000.0} | 2020-12-31 | esef |
| ifrs:OtherIncome | {"amount": 190000000.0} | 2019-12-31 | esef |
| ifrs:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities | {"amount": 474000000.0} | 2020-12-31 | esef |
| ifrs:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities | {"amount": 476000000.0} | 2019-12-31 | esef |
| ifrs:ProceedsFromIssueOfBondsNotesAndDebentures | {"amount": 105000000.0} | 2020-12-31 | esef |
| ifrs:ProceedsFromIssueOfBondsNotesAndDebentures | {"amount": 1068000000.0} | 2019-12-31 | esef |
| ifrs:ProfitLoss | {"amount": 8299000000.0} | 2020-12-31 | esef |
| ifrs:ProfitLoss | {"amount": 15172000000.0} | 2019-12-31 | esef |
| ifrs:ProfitLossAttributableToNoncontrollingInterests | {"amount": 143000000.0} | 2020-12-31 | esef |
| ifrs:ProfitLossAttributableToNoncontrollingInterests | {"amount": 271000000.0} | 2019-12-31 | esef |
| ifrs:ProfitLossAttributableToOwnersOfParent | {"amount": 8156000000.0} | 2020-12-31 | esef |
| ifrs:ProfitLossAttributableToOwnersOfParent | {"amount": 14901000000.0} | 2019-12-31 | esef |
| ifrs:ProfitLossBeforeTax | {"amount": 10284000000.0} | 2020-12-31 | esef |
| ifrs:ProfitLossBeforeTax | {"amount": 18591000000.0} | 2019-12-31 | esef |
| ifrs:ProfitLossFromOperatingActivities | {"amount": 14669000000.0} | 2020-12-31 | esef |
| ifrs:ProfitLossFromOperatingActivities | {"amount": 17641000000.0} | 2019-12-31 | esef |
| ifrs:Provisions | {"amount": 2026000000.0} | 2020-12-31 | esef |
| ifrs:Provisions | {"amount": 1345000000.0} | 2019-12-31 | esef |
| ifrs:PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets | {"amount": 2834000000.0} | 2020-12-31 | esef |
| ifrs:PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets | {"amount": 2820000000.0} | 2019-12-31 | esef |
| ifrs:ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax | {"amount": 255000000.0} | 2020-12-31 | esef |
| ifrs:ReclassificationAdjustmentsOnCashFlowHedgesNetOfTax | {"amount": 528000000.0} | 2019-12-31 | esef |
| ifrs:RepaymentsOfBondsNotesAndDebentures | {"amount": 2594000000.0} | 2020-12-31 | esef |
| ifrs:RepaymentsOfBondsNotesAndDebentures | {"amount": 0.0} | 2019-12-31 | esef |