| Fact | Value | Period | Source |
|---|
| cash_and_equivalents | {"amount": 40589000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2023-09-30 | esef |
| cash_and_equivalents | {"amount": 62179000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2022-09-30 | esef |
| cash_and_equivalents | {"amount": 37881000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2021-09-30 | esef |
| cash_and_equivalents | {"amount": 62041000000.0, "concept": "ifrs-full:CashAndCashEquivalents"} | 2020-09-30 | esef |
| cashflow_financing | {"amount": 6976000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2023-09-30 | esef |
| cashflow_financing | {"amount": 6009000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2022-09-30 | esef |
| cashflow_financing | {"amount": -22045000000.0, "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities"} | 2021-09-30 | esef |
| cashflow_investing | {"amount": -4210000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2023-09-30 | esef |
| cashflow_investing | {"amount": -8703000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2022-09-30 | esef |
| cashflow_investing | {"amount": -3694000000.0, "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities"} | 2021-09-30 | esef |
| cashflow_operating | {"amount": -26699000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2023-09-30 | esef |
| cashflow_operating | {"amount": 28221000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2022-09-30 | esef |
| cashflow_operating | {"amount": 759000000.0, "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities"} | 2021-09-30 | esef |
| entity_legal_form | {"value": "R4KK", "elf_code": "R4KK"} | | gleif |
| eps_basic | {"amount": 1.93, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2021-09-30 | esef |
| eps_basic | {"amount": 23.64, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2023-09-30 | esef |
| eps_basic | {"amount": 2.141, "concept": "ifrs-full:BasicEarningsLossPerShare"} | 2022-09-30 | esef |
| eps_diluted | {"amount": 22.87, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2023-09-30 | esef |
| eps_diluted | {"amount": 2.056, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2022-09-30 | esef |
| eps_diluted | {"amount": 1.852, "concept": "ifrs-full:DilutedEarningsLossPerShare"} | 2021-09-30 | esef |
| headquarters_address | {"city": "MELBOURNE", "region": "AU-VIC", "street": "LEVEL 28, 395 BOURKE STREET", "countr | | gleif |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": -58148000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": 6273000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading | {"amount": 12453000000.0} | 2021-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": -15854000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": -53384000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers | {"amount": -34370000000.0} | 2021-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": -237000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": 3173000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInOtherAssets | {"amount": -985000000.0} | 2021-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed | {"amount": 2075000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed | {"amount": -6720000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForDecreaseIncreaseInReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed | {"amount": -2813000000.0} | 2021-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": 75530000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": 55944000000.0} | 2021-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers | {"amount": -9157000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherLiabilities | {"amount": 296000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherLiabilities | {"amount": -2667000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInOtherLiabilities | {"amount": -1133000000.0} | 2021-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInRepurchaseAgreementsAndCashCollateralOnSecuritiesLent | {"amount": -6893000000.0} | 2023-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInRepurchaseAgreementsAndCashCollateralOnSecuritiesLent | {"amount": 12624000000.0} | 2022-09-30 | esef |
| ifrs:AdjustmentsForIncreaseDecreaseInRepurchaseAgreementsAndCashCollateralOnSecuritiesLent | {"amount": 3100000000.0} | 2021-09-30 | esef |
| ifrs:Assets | {"amount": 1059083000000.0} | 2023-09-30 | esef |
| ifrs:Assets | {"amount": 1055126000000.0} | 2022-09-30 | esef |
| ifrs:Assets | {"amount": 925968000000.0} | 2021-09-30 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 23.64} | 2023-09-30 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 2.141} | 2022-09-30 | esef |
| ifrs:BasicEarningsLossPerShare | {"amount": 1.93} | 2021-09-30 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": 1.963} | 2021-09-30 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": 23.8} | 2023-09-30 | esef |
| ifrs:BasicEarningsLossPerShareFromContinuingOperations | {"amount": 2.193} | 2022-09-30 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 24699000000.0} | 2023-09-30 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 56451000000.0} | 2022-09-30 | esef |
| ifrs:CashAndBankBalancesAtCentralBanks | {"amount": 50832000000.0} | 2021-09-30 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 40589000000.0} | 2023-09-30 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 62179000000.0} | 2022-09-30 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 37881000000.0} | 2021-09-30 | esef |
| ifrs:CashAndCashEquivalents | {"amount": 62041000000.0} | 2020-09-30 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 176000000.0} | 2022-09-30 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 82000000.0} | 2023-09-30 | esef |
| ifrs:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 747000000.0} | 2021-09-30 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 6976000000.0} | 2023-09-30 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": 6009000000.0} | 2022-09-30 | esef |
| ifrs:CashFlowsFromUsedInFinancingActivities | {"amount": -22045000000.0} | 2021-09-30 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -4210000000.0} | 2023-09-30 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -8703000000.0} | 2022-09-30 | esef |
| ifrs:CashFlowsFromUsedInInvestingActivities | {"amount": -3694000000.0} | 2021-09-30 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": -26699000000.0} | 2023-09-30 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 28221000000.0} | 2022-09-30 | esef |
| ifrs:CashFlowsFromUsedInOperatingActivities | {"amount": 759000000.0} | 2021-09-30 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 0.0} | 2023-09-30 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 3183000000.0} | 2022-09-30 | esef |
| ifrs:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities | {"amount": 211000000.0} | 2021-09-30 | esef |
| ifrs:ComprehensiveIncome | {"amount": 7963000000.0} | 2023-09-30 | esef |
| ifrs:ComprehensiveIncome | {"amount": 4563000000.0} | 2022-09-30 | esef |
| ifrs:ComprehensiveIncome | {"amount": 6705000000.0} | 2021-09-30 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 13000000.0} | 2023-09-30 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 0.0} | 2022-09-30 | esef |
| ifrs:ComprehensiveIncomeAttributableToNoncontrollingInterests | {"amount": 3000000.0} | 2021-09-30 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 7950000000.0} | 2023-09-30 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 4563000000.0} | 2022-09-30 | esef |
| ifrs:ComprehensiveIncomeAttributableToOwnersOfParent | {"amount": 6702000000.0} | 2021-09-30 | esef |
| ifrs:ComprehensiveIncomeFromContinuingOperations | {"amount": 8014000000.0} | 2023-09-30 | esef |
| ifrs:ComprehensiveIncomeFromContinuingOperations | {"amount": 4732000000.0} | 2022-09-30 | esef |
| ifrs:ComprehensiveIncomeFromContinuingOperations | {"amount": 6801000000.0} | 2021-09-30 | esef |
| ifrs:ComprehensiveIncomeFromDiscontinuedOperations | {"amount": -51000000.0} | 2023-09-30 | esef |
| ifrs:ComprehensiveIncomeFromDiscontinuedOperations | {"amount": -169000000.0} | 2022-09-30 | esef |
| ifrs:ComprehensiveIncomeFromDiscontinuedOperations | {"amount": -104000000.0} | 2021-09-30 | esef |
| ifrs:CurrentTaxAssets | {"amount": 20000000.0} | 2023-09-30 | esef |
| ifrs:CurrentTaxAssets | {"amount": 16000000.0} | 2022-09-30 | esef |
| ifrs:CurrentTaxAssets | {"amount": 36000000.0} | 2021-09-30 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 1012000000.0} | 2023-09-30 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 1011000000.0} | 2022-09-30 | esef |
| ifrs:CurrentTaxLiabilities | {"amount": 271000000.0} | 2021-09-30 | esef |
| ifrs:DebtInstrumentsHeld | {"amount": 46357000000.0} | 2023-09-30 | esef |
| ifrs:DebtInstrumentsHeld | {"amount": 42080000000.0} | 2022-09-30 | esef |
| ifrs:DebtInstrumentsHeld | {"amount": 41878000000.0} | 2021-09-30 | esef |
| ifrs:DeferredTaxAssets | {"amount": 3499000000.0} | 2023-09-30 | esef |
| ifrs:DeferredTaxAssets | {"amount": 3385000000.0} | 2022-09-30 | esef |
| ifrs:DeferredTaxAssets | {"amount": 2953000000.0} | 2021-09-30 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 0.0} | 2022-09-30 | esef |
| ifrs:DeferredTaxLiabilities | {"amount": 29000000.0} | 2021-09-30 | esef |
| ifrs:DepositsFromBanks | {"amount": 39516000000.0} | 2023-09-30 | esef |
| ifrs:DepositsFromBanks | {"amount": 74679000000.0} | 2022-09-30 | esef |
| ifrs:DepositsFromBanks | {"amount": 74160000000.0} | 2021-09-30 | esef |
| ifrs:DepositsFromCustomers | {"amount": 682120000000.0} | 2023-09-30 | esef |
| ifrs:DepositsFromCustomers | {"amount": 683526000000.0} | 2022-09-30 | esef |
| ifrs:DepositsFromCustomers | {"amount": 605043000000.0} | 2021-09-30 | esef |
| ifrs:DerivativeFinancialAssets | {"amount": 34269000000.0} | 2023-09-30 | esef |
| ifrs:DerivativeFinancialAssets | {"amount": 61016000000.0} | 2022-09-30 | esef |
| ifrs:DerivativeFinancialAssets | {"amount": 27474000000.0} | 2021-09-30 | esef |
| ifrs:DerivativeFinancialLiabilities | {"amount": 35633000000.0} | 2023-09-30 | esef |
| ifrs:DerivativeFinancialLiabilities | {"amount": 57486000000.0} | 2022-09-30 | esef |
| ifrs:DerivativeFinancialLiabilities | {"amount": 24031000000.0} | 2021-09-30 | esef |
| ifrs:DilutedEarningsLossPerShare | {"amount": 22.87} | 2023-09-30 | esef |
| ifrs:DilutedEarningsLossPerShare | {"amount": 2.056} | 2022-09-30 | esef |
| ifrs:DilutedEarningsLossPerShare | {"amount": 1.852} | 2021-09-30 | esef |
| ifrs:DilutedEarningsLossPerShareFromContinuingOperations | {"amount": 23.02} | 2023-09-30 | esef |
| ifrs:DilutedEarningsLossPerShareFromContinuingOperations | {"amount": 2.105} | 2022-09-30 | esef |
| ifrs:DilutedEarningsLossPerShareFromContinuingOperations | {"amount": 1.882} | 2021-09-30 | esef |
| ifrs:DividendsPaid | {"amount": 4506000000.0} | 2022-09-30 | esef |
| ifrs:DividendsPaid | {"amount": 5032000000.0} | 2023-09-30 | esef |
| ifrs:DividendsPaid | {"amount": 2943000000.0} | 2021-09-30 | esef |
| ifrs:DividendsReceivedClassifiedAsOperatingActivities | {"amount": 2000000.0} | 2023-09-30 | esef |
| ifrs:DividendsReceivedClassifiedAsOperatingActivities | {"amount": 28000000.0} | 2022-09-30 | esef |
| ifrs:DividendsReceivedClassifiedAsOperatingActivities | {"amount": 22000000.0} | 2021-09-30 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 2343000000.0} | 2023-09-30 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": -1229000000.0} | 2022-09-30 | esef |
| ifrs:EffectOfExchangeRateChangesOnCashAndCashEquivalents | {"amount": 820000000.0} | 2021-09-30 | esef |
| ifrs:Equity | {"amount": 61503000000.0} | 2023-09-30 | esef |
| ifrs:Equity | {"amount": 59032000000.0} | 2022-09-30 | esef |
| ifrs:Equity | {"amount": 62779000000.0} | 2021-09-30 | esef |
| ifrs:Equity | {"amount": 61293000000.0} | 2020-09-30 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 61154000000.0} | 2023-09-30 | esef |
| ifrs:EquityAttributableToOwnersOfParent | {"amount": 59032000000.0} | 2022-09-30 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 101168000000.0} | 2023-09-30 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 40573000000.0} | 2022-09-30 | esef |
| ifrs:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading | {"amount": 50020000000.0} | 2021-09-30 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": 709000000.0} | 2023-09-30 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": -776000000.0} | 2022-09-30 | esef |
| ifrs:GainsLossesOnCashFlowHedgesBeforeTax | {"amount": 301000000.0} | 2021-09-30 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": -14000000.0} | 2023-09-30 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": -125000000.0} | 2022-09-30 | esef |
| ifrs:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax | {"amount": 377000000.0} | 2021-09-30 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 816000000.0} | 2023-09-30 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": 124000000.0} | 2022-09-30 | esef |
| ifrs:ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9 | {"amount": -202000000.0} | 2021-09-30 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 2973000000.0} | 2023-09-30 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 1641000000.0} | 2022-09-30 | esef |
| ifrs:IncomeTaxesPaidClassifiedAsOperatingActivities | {"amount": 1833000000.0} | 2021-09-30 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 2980000000.0} | 2023-09-30 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 2684000000.0} | 2022-09-30 | esef |
| ifrs:IncomeTaxExpenseContinuingOperations | {"amount": 2597000000.0} | 2021-09-30 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss | {"amount": -38000000.0} | 2023-09-30 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss | {"amount": -705000000.0} | 2022-09-30 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss | {"amount": 47000000.0} | 2021-09-30 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss | {"amount": -20000000.0} | 2023-09-30 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss | {"amount": 43000000.0} | 2022-09-30 | esef |
| ifrs:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss | {"amount": -22000000.0} | 2021-09-30 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": -23933000000.0} | 2023-09-30 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": 25527000000.0} | 2022-09-30 | esef |
| ifrs:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges | {"amount": -24980000000.0} | 2021-09-30 | esef |
| ifrs:IncreaseDecreaseThroughAppropriationOfRetainedEarnings | {"amount": 0.0} | 2022-09-30 | esef |
| ifrs:IncreaseDecreaseThroughAppropriationOfRetainedEarnings | {"amount": 0.0} | 2023-09-30 | esef |
| ifrs:IncreaseDecreaseThroughAppropriationOfRetainedEarnings | {"amount": 0.0} | 2021-09-30 | esef |
| ifrs:IncreaseDecreaseThroughOtherDistributionsToOwners | {"amount": 13000000.0} | 2021-09-30 | esef |
| ifrs:IncreaseDecreaseThroughSharebasedPaymentTransactions | {"amount": 113000000.0} | 2022-09-30 | esef |
| ifrs:IncreaseDecreaseThroughSharebasedPaymentTransactions | {"amount": 131000000.0} | 2023-09-30 | esef |
| ifrs:IncreaseDecreaseThroughSharebasedPaymentTransactions | {"amount": 100000000.0} | 2021-09-30 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 4952000000.0} | 2023-09-30 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 4652000000.0} | 2022-09-30 | esef |
| ifrs:IntangibleAssetsAndGoodwill | {"amount": 4113000000.0} | 2021-09-30 | esef |
| ifrs:InterestExpense | {"amount": 31265000000.0} | 2023-09-30 | esef |
| ifrs:InterestExpense | {"amount": 7538000000.0} | 2022-09-30 | esef |
| ifrs:InterestExpense | {"amount": 4241000000.0} | 2021-09-30 | esef |
| ifrs:InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss | {"amount": 1714000000.0} | 2023-09-30 | esef |
| ifrs:InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss | {"amount": 913000000.0} | 2022-09-30 | esef |
| ifrs:InterestIncomeOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLoss | {"amount": 886000000.0} | 2021-09-30 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 28548000000.0} | 2023-09-30 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 6544000000.0} | 2022-09-30 | esef |
| ifrs:InterestPaidClassifiedAsOperatingActivities | {"amount": 4589000000.0} | 2021-09-30 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 47338000000.0} | 2023-09-30 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 21518000000.0} | 2022-09-30 | esef |
| ifrs:InterestReceivedClassifiedAsOperatingActivities | {"amount": 18194000000.0} | 2021-09-30 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 46358000000.0} | 2023-09-30 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 21465000000.0} | 2022-09-30 | esef |
| ifrs:InterestRevenueCalculatedUsingEffectiveInterestMethod | {"amount": 17148000000.0} | 2021-09-30 | esef |
| ifrs:InterestRevenueExpense | {"amount": 16807000000.0} | 2023-09-30 | esef |
| ifrs:InterestRevenueExpense | {"amount": 14840000000.0} | 2022-09-30 | esef |
| ifrs:InterestRevenueExpense | {"amount": 13793000000.0} | 2021-09-30 | esef |
| ifrs:InvestmentsInSubsidiaries | {"amount": 0.0} | 2023-09-30 | esef |
| ifrs:InvestmentsInSubsidiaries | {"amount": 0.0} | 2022-09-30 | esef |
| ifrs:InvestmentsInSubsidiaries | {"amount": 0.0} | 2021-09-30 | esef |
| ifrs:IssuedCapital | {"amount": 38546000000.0} | 2023-09-30 | esef |
| ifrs:IssuedCapital | {"amount": 39399000000.0} | 2022-09-30 | esef |
| ifrs:IssuedCapital | {"amount": 43247000000.0} | 2021-09-30 | esef |
| ifrs:IssueOfEquity | {"amount": 274000000.0} | 2021-09-30 | esef |
| ifrs:IssueOfEquity | {"amount": 500000000.0} | 2022-09-30 | esef |
| ifrs:Liabilities | {"amount": 997580000000.0} | 2023-09-30 | esef |
| ifrs:Liabilities | {"amount": 996094000000.0} | 2022-09-30 | esef |