Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16 (6-k)

2020-09-30false0000067088--03-31New guidance on measurement of credit losses on financial instruments requires allowance for credit losses to be measured by current expected credit losses model from April 1, 2020. For additional information, refer to Note 1.For the six months ended September 30, 2019 and 2020, the performance-based plan under the Board Incentive Plan could potentially dilute earnings per common share but were not included in the computation of diluted earnings per common share due to their antidilutive effects.Calculated based on the exchange rate of IDR1 = ¥0.0084Calculated based on the exchange rate of IDR1 = ¥0.0077Calculated based on the exchange rate of IDR1 = ¥0.0080Other debt securities in the table above mainly include ¥86,734 million of private placement debt conduit bonds.MUFG Americas Holdings Corporation (“MUFG Americas Holdings” or “MUAH”) reclassified residential mortgage-backed securities and commercial mortgage-backed securities from Available-for-sale debt securities to Held-to-maturity debt securities. As a result of the reclassification of residential mortgage-backed securities and commercial mortgage-backed securities, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying condensed consolidated balance sheets were ¥8,215 million and ¥3,178 million, respectively, at March 31, 2020 and are not included in the table above.MUFG Americas Holdings reclassified residential mortgage-backed securities and commercial mortgage-backed securities from Available-for-sale debt securities to Held-to-maturity debt securities. As a result of the reclassification of residential mortgage-backed securities and commercial mortgage-backed securities, the unrealized losses before taxes at the date of reclassification remaining in Accumulated OCI in the accompanying condensed consolidated balance sheets were ¥6,843 million and ¥2,593 million, respectively, at September 30, 2020 and are not included in the table above. Included in Investment securities gains—net.The cumulative impairment losses at March 31, 2020 and September 30, 2020 were ¥5,007 million and ¥7,925 million, respectively. The cumulative downward changes for observable prices at March 31, 2020 and September 30, 2020 were ¥953 million and ¥953 million, respectively. Included in Investment securities gains—net and Other comprehensive income—net.Under the measurement alternative, nonmarketable equity securities are carried at cost plus or minus changes resulting from observable prices in orderly transactions for the identical or a similar investment of the same issuer.The MUFG Group applied measurement alternative downward or upward changes to certain nonmarketable equity securities, resulting from observable prices in orderly transactions, such as partial repurchase and transactions by other entities.The cumulative upward changes for observable prices at March 31, 2020 and September 30, 2020 were ¥34,466 million and ¥36,782 million, respectively. Loans to so-called “non-bank finance companies” are generally included in the “Banks and other financial institutions” category. Non-bank finance companies are primarily engaged in consumer lending, factoring and credit card businesses.The above table includes loans held for sale of ¥344,790 million at March 31, 2020 and ¥315,142 million at September 30, 2020, respectively. Nonaccrual loans in the above table do not include loans held for sale of ¥330 million and ¥6,767 million at March 31, 2020 and September 30, 2020, respectively, and do not include loans acquired with deteriorated credit quality of ¥25,427 million at March 31, 2020. As a result of adopting new guidance, costs for implementation activities in certain hosting arrangements are capitalized as software.Intangible assets not subject to amortization includes mortgage servicing rights accounted for at fair value of ¥29,641 million and ¥15,274 million at March 31, 2020 and September 30, 2020, respectively. TDRs for the Commercial and Residential segments include accruing loans, and do not include nonaccrual loans.For the six months ended September 30, 2019, extension of the stated maturity date of loans was the primary concession type in the Commercial and Residential segments, reduction in the stated rate was the primary concession type in the Card segment, and some combination thereof were the primary concession type in the MUFG Americas Holdings and Krungsri segments. For the six months ended September 30, 2020, extension of the stated maturity date of loans was the primary concession type in the Commercial, Residential and Krungsri segments, reduction in the stated rate was the primary concession type in the Card and Other segments and forbearance was the primary concession type in the MUFG Americas Holdings segment. TDRs for the Card, MUFG Americas Holdings, Krungsri and Other segments include accrual and nonaccrual loans.See Note 2 for the goodwill acquired in connection with acquisitions.At March 31, 2020, total loans in the above table do not include loans held for sale and loans acquired with deteriorated credit quality and represent balances without adjustments in relation to unearned income, unamortized premiums and deferred loan fees. At September 30, 2020, total loans in the above table do not include loans held for sale and represent balances without adjustments in relation to unearned income, unamortized premiums and deferred loan fees.Other is principally comprised of gains or losses from foreign exchange translation.Loans acquired with deteriorated credit quality in the above table include impaired loans which are individually evaluated for impairment. Total loans in the above table do not include loans held for sale, and represent balances without adjustments in relation to unearned income, unamortized premiums and deferred loan fees.See Note 1 for more information.Derivative instruments that are deemed to be included within the definition of guarantees as prescribed in the guidance on guarantees include certain written options and credit default swaps.Credit derivatives sold by the MUFG Group are excluded from this presentation.These Accumulated OCI components are components of net periodic benefit cost. See Note 8 for more information. See Notes of the tables regarding “the maximum potential amount of future payments classified based upon internal credit ratings “in Note 24 to the consolidated financial statements for the fiscal year ended March 31, 2020.Guarantee fees are not within the scope of the guidance on revenue from contracts with customersOther fees and commissions include non-refundable financing related fees that are not within the scope of the guidance on revenue from contracts with customers. Includes both written and purchased positions.The fair value of derivative instruments is presented on a gross basis even when derivative instruments are subject to master netting agreements. Cash collateral payable and receivable associated with derivative instruments are not added to or netted against the fair value amounts.The derivative instruments which are not designated as a hedging instrument are held for trading and risk management purposes, and are presented in Trading acount assets and liabilities except for (6). For more information about fair value measurement and assumptions used to measure the fair value of derivatives, see Note 31 to the consolidated financial statements for the fiscal year ended March 31, 2020.The MUFG Group adopts hedging strategies and applies hedge accounting to certain derivative transactions entered into by certain subsidiaries. The derivative instruments which are designated as hedging instruments are presented in Other assets or Other liabilities on the accompanying condensed consolidated balance sheets.This table does not include contracts with embedded derivatives for which the fair value option has been elected.Other mainly includes bifurcated embedded derivatives carried at fair value, which are presented in Loans, Deposits and Long-term debt.Includes securities measured under the fair value option. Excludes certain investments valued at net asset value of private equity funds whose fair values at March 31, 2020 were ¥66,918 million and those at September 30, 2020 were ¥75,766 million, respectively. The amounts of unfunded commitments related to these private equity funds at March 31, 2020 were ¥102,743 million, and those at September 30, 2020 were ¥91,287 million, respectively. For the nature and details of these investments, see Note 31 to the consolidated financial statements for the fiscal year ended March 31, 2020.Excludes certain investments valued at net asset value of real estate funds and private equity and other funds whose fair values at March 31, 2020 were ¥23,233 million and ¥18,862 million respectively, and those at September 30, 2020 were ¥23,838 million and ¥17,951 million respectively. The amounts of unfunded commitments related to these real estate funds and private equity and other funds at March 31, 2020 were ¥1,494 million and nil, respectively, and those at September 30, 2020 were ¥1,307 million and nil, respectively. For the nature and details of these investments, see Note 31 to the consolidated financial statements for the fiscal year ended March 31, 2020.Mainly comprises securities received as collateral that may be sold or repledged under securities lending transactions and money in trust for segregating cash deposited by customers on security transactions.Included in Other liabilities. Includes other short-term borrowings, long-term debt, bifurcated embedded derivatives carried at fair value and derivative liabilities designated as hedging instruments. The MUFG Group considers ratings of Baa3/BBB- or higher to meet the definition of investment grade.Fair value amounts are shown on a gross basis prior to cash collateral or counterparty netting.“BK and TB” is a sum of MUFG Bank on a stand-alone basis and Mitsubishi UFJ Trust and Banking on a stand-alone basis.From the period ended September 30, 2020, certain derivatives such as earthquake derivatives previously included in Commodity contracts are separately disclosed in Other of Trading derivative assets and liabilities.Includes Trading securities measured under the fair value option.Included in Trading account profits—net and Foreign exchange gains (losses)—net.Included in Fees and commissions income and Other non-interest income.From the period ended September 30, 2020, certain derivatives such as earthquake derivatives previously included in Commodity contracts—net are separately disclosed in Other—net of Trading derivatives—net.The fair value as of March 31, 2020 and September 30, 2020 excludes the fair value of investments valued using vendor prices.For further detail of Internal model, refer to the last paragraph of “Trading Account Assets and Liabilities—Trading Account Securities” in Note 31 to the consolidated financial statements for the fiscal year ended March 31, 2020.Weighted average is calculated by weighing each input by the relative fair value of the respective financial instruments for investment securities. Median is used for derivative instruments.Goodwill originally recognized of ¥1,900,019 million, which has been fully impaired before April 1, 2019, is not included in the table above.These loans do not require an allowance for credit losses because the recorded loan balance equals, or does not exceed, the present value of expected future cash flows discounted at the loans’ original effective interest rate, or the fair value of the collateral if the loan is a collateral-dependent loan.See “Probability of default” in “Sensitivity to and range of unobservable inputs” in Note 31 to the consolidated financial statements for the fiscal year ended March 31, 2020.Excludes certain investments valued at net asset value of ¥12,935 million and ¥10,031 million at March 31, 2020 and September 30, 2020, respectively. The unfunded commitments related to these investments are ¥17,216 million and ¥13,219 million at March 31, 2020 and September 30, 2020, respectively. These investments are in private equity funds. For the nature and details of private equity funds, see Note 31 to the consolidated financial statements for the fiscal year ended March 31, 2020.Includes certain nonmarketable equity securities that are measured at fair value on a nonrecurring basis, including impairment and observable price change for nonmarketable equity securities measured under the measurement alternative.Change in value attributable to the instrument-specific credit risk related to those financial liabilities are not material.Includes loans held for sale and collateral dependent loans measured at fair value on a nonrecurring basis. Refer to “Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis” for the details of the level classification.Excludes investments in equity method investees of ¥2,421 billion and ¥2,327 billion at March 31, 2020 and September 30, 2020, respectively. Total loans of MUFG Americas Holdings do not include Federal Deposit Insurance Corporation (“FDIC”) covered loans which are not individually rated totaling ¥365 million and nil at March 31, 2020 and September 30, 2020, respectively. The MUFG Group will be reimbursed for a substantial portion of any future losses on FDIC covered loans under the terms of the FDIC loss share agreements. Transfers into Level 3 for Foreign exchange contracts—net were mainly caused by the valuation using certain unobservable input. For the six months ended September 30, 2019, transfers into (out of) Level 3 for corporate bonds were mainly caused by the decrease (increase) in liquidity or the availability of the quoted prices provided by third-party venders. For the six months ended September 30, 2020, transfers out of Level 3 for corporate bonds were due to changes in the impact of unobservable credit worthiness inputs to the entire fair value measurement of the private placement bonds issued by Japanese non-public companies. Unobservable credit worthiness inputs include probability of default based on credit ratings of the bond issuers and loss given default.Included in Trading account profits—net.Transfers into (out of) Level 3 for embedded derivatives in Other were mainly caused by the decrease (increase) in the observability of the key inputs to the valuation models and a corresponding increase (decrease) in the significance of the unobservable inputs.Transfers relate to the reclassification of certain securities 0000067088 2019-04-01 2019-09-30 0000067088 2020-04-01 2020-09-30 0000067088 2020-03-31 0000067088 2020-09-30 0000067088 2019-04-01 2020-03-31 0000067088 2019-09-30 0000067088 2019-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember 2019-04-01 2020-03-31 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2019-04-01 2020-03-31 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember 2019-04-01 2020-03-31 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember 2019-04-01 2020-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember 2019-04-01 2020-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2019-04-01 2020-03-31 0000067088 mufg:JapanesePrefecturalAndMunicipalBondsMember 2019-04-01 2020-03-31 0000067088 mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2019-04-01 2020-03-31 0000067088 mufg:LongTermDebtIncludingCapitalLeaseMember 2020-03-31 0000067088 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-03-31 0000067088 us-gaap:MaturityOvernightAndOnDemandMember 2020-03-31 0000067088 mufg:Maturity30DaysOrLessMember 2020-03-31 0000067088 mufg:Maturity31To90DaysMember 2020-03-31 0000067088 us-gaap:MaturityOver90DaysMember 2020-03-31 0000067088 mufg:AlternativeMeasurementMember mufg:NonMarketableEquitySecuritiesMember 2020-03-31 0000067088 us-gaap:CommitmentsToExtendCreditMember 2020-03-31 0000067088 us-gaap:LetterOfCreditMember 2020-03-31 0000067088 mufg:CommitmentsToMakeInvestmentsMember 2020-03-31 0000067088 mufg:OtherOffBalanceSheetInstrumentsMember 2020-03-31 0000067088 mufg:StandbyLettersOfCreditAndFinancialGuaranteesMember 2020-03-31 0000067088 us-gaap:PerformanceGuaranteeMember 2020-03-31 0000067088 mufg:DerivativeInstrumentsGuaranteeMember 2020-03-31 0000067088 mufg:LiabilitiesOfTrustAccountsMember 2020-03-31 0000067088 us-gaap:GuaranteeTypeOtherMember 2020-03-31 0000067088 us-gaap:InterestRateContractMember 2020-03-31 0000067088 us-gaap:ForeignExchangeContractMember 2020-03-31 0000067088 us-gaap:EquityContractMember 2020-03-31 0000067088 us-gaap:CommodityContractMember 2020-03-31 0000067088 us-gaap:CreditRiskContractMember 2020-03-31 0000067088 us-gaap:OtherContractMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember 2020-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember 2020-03-31 0000067088 mufg:CardPortfolioSegmentMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2020-03-31 0000067088 mufg:KrungsriPortfolioSegmentMember 2020-03-31 0000067088 us-gaap:UnallocatedFinancingReceivablesMember 2020-03-31 0000067088 mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember 2020-03-31 0000067088 mufg:MarketableEquitySecuritiesMember 2020-03-31 0000067088 mufg:OtherClassOfCollateralPledgedMember 2020-03-31 0000067088 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2020-03-31 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-03-31 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel1Member 2020-03-31 0000067088 mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-03-31 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-03-31 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:AssetBackedConduitsMember 2020-03-31 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:InvestmentFundsMember 2020-03-31 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:SpecialPurposeEntitiesCreatedForStructuredFinancingMember 2020-03-31 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:RepackagedInstrumentsMember 2020-03-31 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:OtherVieMember 2020-03-31 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel1Member 2020-03-31 0000067088 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:EquityContractMember us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:EquityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:CreditRiskContractMember us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:CreditRiskContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:OtherContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:NondesignatedMember 2020-03-31 0000067088 us-gaap:DesignatedAsHedgingInstrumentMember 2020-03-31 0000067088 us-gaap:ComputerSoftwareIntangibleAssetMember 2020-03-31 0000067088 us-gaap:CustomerRelationshipsMember 2020-03-31 0000067088 us-gaap:CoreDepositsMember 2020-03-31 0000067088 us-gaap:TradeNamesMember 2020-03-31 0000067088 us-gaap:OtherIntangibleAssetsMember 2020-03-31 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 mufg:MortgageServicingRightsMember 2020-03-31 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember 2020-03-31 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:NormalMember 2020-03-31 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:CloseWatchMember 2020-03-31 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-03-31 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:NotRatedMember 2020-03-31 0000067088 us-gaap:PerformanceGuaranteeMember mufg:NormalMember 2020-03-31 0000067088 us-gaap:PerformanceGuaranteeMember mufg:CloseWatchMember 2020-03-31 0000067088 us-gaap:PerformanceGuaranteeMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-03-31 0000067088 us-gaap:PerformanceGuaranteeMember mufg:NotRatedMember 2020-03-31 0000067088 mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-03-31 0000067088 mufg:NormalMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-03-31 0000067088 mufg:CloseWatchMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-03-31 0000067088 mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-03-31 0000067088 mufg:NotRatedMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-03-31 0000067088 mufg:AssetBackedConduitsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 mufg:InvestmentFundsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 mufg:SpecialPurposeEntitiesCreatedForStructuredFinancingMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 mufg:RepackagedInstrumentsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 mufg:TrustArrangementsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 mufg:OtherVieMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-03-31 0000067088 srt:ConsolidationEliminationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-03-31 0000067088 mufg:SecuritizationOfMUFGGroupAssetsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ManufacturingSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ConstructionSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember us-gaap:RealEstateSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ServicesSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:WholesaleAndRetailSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember us-gaap:FinancialServicesSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:CommunicationAndInformationServicesSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:OtherIndustriesSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ConsumerSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionDomesticMember 2020-03-31 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:GovernmentSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:FinancialServicesSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:CommercialAndIndustrialSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionForeignMember mufg:OtherSectorMember 2020-03-31 0000067088 us-gaap:GeographicDistributionForeignMember 2020-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:PrivatePlacementDebtConduitBondsMember 2020-03-31 0000067088 us-gaap:ExternalCreditRatingInvestmentGradeMember mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 us-gaap:ExternalCreditRatingNonInvestmentGradeMember mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 mufg:NotRatedMember mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 us-gaap:ExternalCreditRatingInvestmentGradeMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember mufg:IndexAndBasketCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 mufg:NotRatedMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember mufg:IndexAndBasketCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember mufg:IndexAndBasketCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 mufg:IndexAndBasketCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MUFGBankLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 us-gaap:ExternalCreditRatingNonInvestmentGradeMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember mufg:IndexAndBasketCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 us-gaap:ExternalCreditRatingInvestmentGradeMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MUFGBankLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 us-gaap:ExternalCreditRatingNonInvestmentGradeMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MUFGBankLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:PrivateEquityFundsMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsCorporationMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsCorporationMember us-gaap:CommercialMortgageBackedSecuritiesMember 2020-03-31 0000067088 mufg:VariableInterestEntityPrimaryBeneficiaryLiabilitiesWithRecourseEliminationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 mufg:CardPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 mufg:CardPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 mufg:KrungsriPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 mufg:KrungsriPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 mufg:FinancingReceivables1To3MonthsPastDueMember 2020-03-31 0000067088 mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember us-gaap:FairValueInputsLevel1Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapanesePrefecturalAndMunicipalBondsMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:FairValueInputsLevel1Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:OtherDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CommercialPaperMember us-gaap:FairValueInputsLevel2Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CommercialPaperMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommodityContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommodityContractMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommodityContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherDebtSecuritiesMember 2020-03-31 0000067088 us-gaap:PerformingFinancingReceivableMember mufg:KrungsriPortfolioSegmentMember 2020-03-31 0000067088 mufg:UnderperformingFinanceMember mufg:KrungsriPortfolioSegmentMember 2020-03-31 0000067088 us-gaap:NonperformingFinancingReceivableMember mufg:KrungsriPortfolioSegmentMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:NormalMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:CloseWatchMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:NormalMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:CloseWatchMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-03-31 0000067088 us-gaap:FinancialAssetAcquiredWithCreditDeteriorationMember us-gaap:CommercialPortfolioSegmentMember mufg:NormalMember 2020-03-31 0000067088 us-gaap:FinancialAssetAcquiredWithCreditDeteriorationMember us-gaap:CommercialPortfolioSegmentMember mufg:CloseWatchMember 2020-03-31 0000067088 us-gaap:FinancialAssetAcquiredWithCreditDeteriorationMember us-gaap:CommercialPortfolioSegmentMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-03-31 0000067088 us-gaap:FinancialAssetAcquiredWithCreditDeteriorationMember us-gaap:CommercialPortfolioSegmentMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember mufg:NormalMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember mufg:CloseWatchMember 2020-03-31 0000067088 us-gaap:CommercialPortfolioSegmentMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:AccrualMember 2020-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:NonAccrualMember 2020-03-31 0000067088 mufg:CardPortfolioSegmentMember mufg:AccrualMember 2020-03-31 0000067088 mufg:CardPortfolioSegmentMember mufg:NonAccrualMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnNumberOfDelinquenciesMember mufg:AccrualMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnNumberOfDelinquenciesMember mufg:NonAccrualMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnInternalCreditRatingsMember us-gaap:PassMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnInternalCreditRatingsMember us-gaap:SpecialMentionMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnInternalCreditRatingsMember mufg:ClassifiedMember 2020-03-31 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:AccrualMember 2020-03-31 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:NonAccrualMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember mufg:MarketableEquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember mufg:MarketableEquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:MarketableEquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember mufg:NonMarketableEquitySecuritiesMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:NonMarketableEquitySecuritiesMember 2020-03-31 0000067088 us-gaap:EquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:PrivateEquityFundsMember 2020-03-31 0000067088 us-gaap:RealEstateFundsMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:NonMarketableEquitySecuritiesMember mufg:PrivateEquityAndOtherFundsMember 2020-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:EquitySecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputRecoveryRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputRecoveryRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputComparabilityAdjustmentMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDiscountRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDiscountRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputPrepaymentRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember mufg:MeasurementInputRecoveryRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputLiquidityPremiumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquitySecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputLiquidityPremiumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:MeasurementInputDefaultRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputRecoveryRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputComparabilityAdjustmentMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDiscountRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputPrepaymentRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember mufg:MeasurementInputRecoveryRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputLiquidityPremiumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember srt:WeightedAverageMember mufg:InternalModelMember us-gaap:MeasurementInputDefaultRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member srt:WeightedAverageMember mufg:MeasurementInputLiquidityPremiumMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:EquitySecuritiesMember 2020-03-31 0000067088 us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:EquityContractMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenForeignExchangeRateMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputForeignExchangeRateAndEquityCorrelationMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputForeignExchangeRateAndEquityCorrelationMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenEquitiesMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenEquitiesMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MaximumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputTermOfLitigationMember srt:MinimumMember 2020-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputTermOfLitigationMember srt:MaximumMember 2020-03-31 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2017-12-26 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2017-12-29 2017-12-29 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2017-12-29 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2018-08-03 2018-08-03 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2018-08-03 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2019-04-29 2019-04-29 0000067088 mufg:BKAcquisitionOfBankNusantaraParahyanganMember 2019-04-29 2019-04-29 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2019-04-29 0000067088 mufg:BKAcquisitionOfBankNusantaraParahyanganMember 2019-04-29 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2019-05-01 2019-05-01 0000067088 mufg:TBAcquisitionOfColonialFirstStateGlobalAssetManagementMember 2019-08-02 0000067088 mufg:TBAcquisitionOfColonialFirstStateGlobalAssetManagementMember us-gaap:CustomerRelationshipsMember 2019-08-02 0000067088 mufg:TBAcquisitionOfColonialFirstStateGlobalAssetManagementMember 2019-08-02 2019-08-02 0000067088 mufg:TBAcquisitionOfColonialFirstStateGlobalAssetManagementMember us-gaap:CustomerRelationshipsMember 2019-08-02 2019-08-02 0000067088 us-gaap:MaterialReconcilingItemsMember 2020-04-01 2020-09-30 0000067088 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-04-01 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2020-04-01 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:MarketableEquitySecuritiesMember 2020-04-01 2020-09-30 0000067088 us-gaap:ParentMember us-gaap:RetainedEarningsUnappropriatedMember 2020-04-01 2020-09-30 0000067088 mufg:NonMarketableEquitySecuritiesMember mufg:AlternativeMeasurementMember 2020-04-01 2020-09-30 0000067088 country:JP mufg:PensionBenefitsAndSIPsMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember 2020-04-01 2020-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:ForeignCurrencyGainLossMember 2020-04-01 2020-09-30 0000067088 us-gaap:InterestRateContractMember mufg:TradingAccountProfitsLossesNetMember 2020-04-01 2020-09-30 0000067088 us-gaap:InterestRateContractMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:ForeignCurrencyGainLossMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember mufg:TradingAccountProfitsLossesNetMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember 2020-04-01 2020-09-30 0000067088 us-gaap:EquityContractMember us-gaap:ForeignCurrencyGainLossMember 2020-04-01 2020-09-30 0000067088 us-gaap:EquityContractMember mufg:TradingAccountProfitsLossesNetMember 2020-04-01 2020-09-30 0000067088 us-gaap:EquityContractMember 2020-04-01 2020-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:ForeignCurrencyGainLossMember 2020-04-01 2020-09-30 0000067088 us-gaap:CreditRiskContractMember mufg:TradingAccountProfitsLossesNetMember 2020-04-01 2020-09-30 0000067088 us-gaap:CreditRiskContractMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherContractMember us-gaap:ForeignCurrencyGainLossMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherContractMember mufg:TradingAccountProfitsLossesNetMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherContractMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember 2020-04-01 2020-09-30 0000067088 us-gaap:DepositAccountMember 2020-04-01 2020-09-30 0000067088 mufg:RemittancesAndTransfersMember 2020-04-01 2020-09-30 0000067088 mufg:ForeignTradingBusinessMember 2020-04-01 2020-09-30 0000067088 us-gaap:CreditCardMember 2020-04-01 2020-09-30 0000067088 mufg:SecurityRelatedServicesMember 2020-04-01 2020-09-30 0000067088 us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember 2020-04-01 2020-09-30 0000067088 us-gaap:FiduciaryAndTrustMember 2020-04-01 2020-09-30 0000067088 us-gaap:GuaranteesMember 2020-04-01 2020-09-30 0000067088 mufg:InsuranceCommissionsMember 2020-04-01 2020-09-30 0000067088 us-gaap:RealEstateMember 2020-04-01 2020-09-30 0000067088 mufg:OtherFeesAndCommissionsMember 2020-04-01 2020-09-30 0000067088 us-gaap:SecuritiesAssetsMember 2020-04-01 2020-09-30 0000067088 us-gaap:LoansReceivableMember 2020-04-01 2020-09-30 0000067088 us-gaap:LoansReceivableMember mufg:LoansHeldForSaleMember 2020-04-01 2020-09-30 0000067088 us-gaap:LoansReceivableMember mufg:CollateralDependentLoansMember 2020-04-01 2020-09-30 0000067088 us-gaap:PropertyPlantAndEquipmentMember 2020-04-01 2020-09-30 0000067088 mufg:IntangibleAssetsMember 2020-04-01 2020-09-30 0000067088 us-gaap:GoodwillMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherAssetsMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherAssetsMember us-gaap:EquityMethodInvestmentsMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherAssetsMember mufg:OtherInOtherAssetsFairValueDisclosureMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountMember mufg:TradingAccountSecuritiesMember us-gaap:AssetsMember 2020-04-01 2020-09-30 0000067088 mufg:ForeignExchangeGainsLossesMember mufg:TradingAccountSecuritiesMember us-gaap:AssetsMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountSecuritiesMember us-gaap:AssetsMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountMember us-gaap:AssetsMember 2020-04-01 2020-09-30 0000067088 mufg:ForeignExchangeGainsLossesMember us-gaap:AssetsMember 2020-04-01 2020-09-30 0000067088 us-gaap:AssetsMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountMember mufg:OtherShortTermBorrowingMember us-gaap:LiabilityMember 2020-04-01 2020-09-30 0000067088 mufg:OtherShortTermBorrowingMember us-gaap:LiabilityMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountMember mufg:LongTermDebtIncludingCapitalLeaseMember us-gaap:LiabilityMember 2020-04-01 2020-09-30 0000067088 mufg:LongTermDebtIncludingCapitalLeaseMember us-gaap:LiabilityMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountMember us-gaap:LiabilityMember 2020-04-01 2020-09-30 0000067088 us-gaap:LiabilityMember 2020-04-01 2020-09-30 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-04-01 2020-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember 2020-04-01 2020-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember 2020-04-01 2020-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-04-01 2020-09-30 0000067088 mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-04-01 2020-09-30 0000067088 mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommercialPaperMember 2020-04-01 2020-09-30 0000067088 us-gaap:AdditionalPaidInCapitalMember us-gaap:ParentMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:RetailAndCommercialBankingBusinessGroupMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCorporateAndInvestmentBankingBusinessGroupMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCommercialBankingBusinessGroupMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:AssetManagementAndInvestorServicesBusinessGroupMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:GlobalMarketsBusinessGroupMember 2020-04-01 2020-09-30 0000067088 mufg:CorporateAndEliminationsMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:RetailAndCommercialBankingBusinessGroupMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCorporateAndInvestmentBankingBusinessGroupMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCommercialBankingBusinessGroupMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:AssetManagementAndInvestorServicesBusinessGroupMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:GlobalMarketsBusinessGroupMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 mufg:CorporateAndEliminationsMember mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 mufg:BKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:RetailAndCommercialBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCorporateAndInvestmentBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCommercialBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:AssetManagementAndInvestorServicesBusinessGroupMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:GlobalMarketsBusinessGroupMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 mufg:CorporateAndEliminationsMember mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 mufg:OtherThanBKAndTBMember 2020-04-01 2020-09-30 0000067088 mufg:NetGainsOnSalesAndRedemptionsOfSecuritiesAvailableForSaleMember us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:TreasuryStockMember us-gaap:ParentMember 2020-04-01 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:CommercialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember us-gaap:CommercialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember srt:MinimumMember 2020-04-01 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember srt:MinimumMember 2020-04-01 2020-09-30 0000067088 srt:MinimumMember mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember srt:MinimumMember 2020-04-01 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember srt:MinimumMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedTranslationAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember srt:MaximumMember 2020-04-01 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember srt:MaximumMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 mufg:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossDueToSettlementsAndCurtailmentsAndOtherMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:NoncontrollingInterestMember 2020-04-01 2020-09-30 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:TradingAccountTradingSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommodityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:EquityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:NonMarketableEquitySecuritiesMember mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:OtherAssetsFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 us-gaap:AccumulatedOtherComprehensiveIncomeMember us-gaap:ParentMember 2020-04-01 2020-09-30 0000067088 mufg:OtherLiabilitiesFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2020-04-01 2020-09-30 0000067088 mufg:MorganStanleyMember 2020-04-01 2020-09-30 0000067088 mufg:MorganStanleyMember us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2020-04-01 2020-09-30 0000067088 mufg:EconomcForecastMethodMember us-gaap:CommercialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:AverageHistoricalLossInformationMember us-gaap:CommercialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:AverageHistoricalLossMethodMember 2020-04-01 2020-09-30 0000067088 mufg:EconomcForecastMethodMember mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:AverageHistoricalLossMethodMember mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember mufg:EconomcForecastMethodMember 2020-04-01 2020-09-30 0000067088 mufg:EconomcForecastMethodMember us-gaap:ResidentialPortfolioSegmentMember 2020-04-01 2020-09-30 0000067088 mufg:AcquisitionOfDvbBankSesAviationFinanceDivisionMember srt:MaximumMember 2020-04-01 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember srt:MinimumMember mufg:UnderperformingFinanceMember 2020-04-01 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember srt:MinimumMember us-gaap:NonperformingFinancingReceivableMember 2020-04-01 2020-09-30 0000067088 mufg:LongTermDebtIncludingCapitalLeaseMember 2020-09-30 0000067088 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-09-30 0000067088 us-gaap:MaturityOvernightAndOnDemandMember 2020-09-30 0000067088 mufg:Maturity30DaysOrLessMember 2020-09-30 0000067088 mufg:Maturity31To90DaysMember 2020-09-30 0000067088 us-gaap:MaturityOver90DaysMember 2020-09-30 0000067088 mufg:TradingAccountSecuritiesMember 2020-09-30 0000067088 mufg:InvestmentSecuritiesMember 2020-09-30 0000067088 us-gaap:LoansReceivableMember 2020-09-30 0000067088 mufg:OtherPledgedAssetsMember 2020-09-30 0000067088 us-gaap:DepositsMember 2020-09-30 0000067088 mufg:PayablesUnderRepurchaseAgreementsAndSecuritiesLendingTransactionsMember 2020-09-30 0000067088 mufg:OtherShortTermBorrowingsAndLongTermDebtMember 2020-09-30 0000067088 mufg:OtherPledgedAssetsClassifiedByTypeOfLiabilitiesMember 2020-09-30 0000067088 mufg:AlternativeMeasurementMember mufg:NonMarketableEquitySecuritiesMember 2020-09-30 0000067088 us-gaap:CommitmentsToExtendCreditMember 2020-09-30 0000067088 us-gaap:LetterOfCreditMember 2020-09-30 0000067088 mufg:CommitmentsToMakeInvestmentsMember 2020-09-30 0000067088 mufg:OtherOffBalanceSheetInstrumentsMember 2020-09-30 0000067088 mufg:StandbyLettersOfCreditAndFinancialGuaranteesMember 2020-09-30 0000067088 us-gaap:PerformanceGuaranteeMember 2020-09-30 0000067088 mufg:DerivativeInstrumentsGuaranteeMember 2020-09-30 0000067088 mufg:LiabilitiesOfTrustAccountsMember 2020-09-30 0000067088 us-gaap:GuaranteeTypeOtherMember 2020-09-30 0000067088 us-gaap:InterestRateContractMember 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember 2020-09-30 0000067088 us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:CommodityContractMember 2020-09-30 0000067088 us-gaap:CreditRiskContractMember 2020-09-30 0000067088 us-gaap:OtherContractMember 2020-09-30 0000067088 mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-09-30 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember 2020-09-30 0000067088 mufg:MarketableEquitySecuritiesMember 2020-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember 2020-09-30 0000067088 mufg:OtherClassOfCollateralPledgedMember 2020-09-30 0000067088 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2020-09-30 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2020-09-30 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel1Member 2020-09-30 0000067088 mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-09-30 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-09-30 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:AssetBackedConduitsMember 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:SpecialPurposeEntitiesCreatedForStructuredFinancingMember 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:InvestmentFundsMember 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:RepackagedInstrumentsMember 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember mufg:OtherVieMember 2020-09-30 0000067088 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:FairValueInputsLevel1Member 2020-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:EquityContractMember us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:EquityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:CommodityContractMember us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:CommodityContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:OtherContractMember us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:OtherContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:NondesignatedMember 2020-09-30 0000067088 us-gaap:DesignatedAsHedgingInstrumentMember 2020-09-30 0000067088 us-gaap:ComputerSoftwareIntangibleAssetMember 2020-09-30 0000067088 us-gaap:CustomerRelationshipsMember 2020-09-30 0000067088 us-gaap:CoreDepositsMember 2020-09-30 0000067088 us-gaap:TradeNamesMember 2020-09-30 0000067088 us-gaap:OtherIntangibleAssetsMember 2020-09-30 0000067088 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 mufg:MortgageServicingRightsMember 2020-09-30 0000067088 us-gaap:CommercialPaperMember 2020-09-30 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember 2020-09-30 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:NormalMember 2020-09-30 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:CloseWatchMember 2020-09-30 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-09-30 0000067088 us-gaap:FinancialStandbyLetterOfCreditMember mufg:NotRatedMember 2020-09-30 0000067088 us-gaap:PerformanceGuaranteeMember mufg:NormalMember 2020-09-30 0000067088 us-gaap:PerformanceGuaranteeMember mufg:CloseWatchMember 2020-09-30 0000067088 us-gaap:PerformanceGuaranteeMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember 2020-09-30 0000067088 us-gaap:PerformanceGuaranteeMember mufg:NotRatedMember 2020-09-30 0000067088 mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-09-30 0000067088 mufg:NormalMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-09-30 0000067088 mufg:CloseWatchMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-09-30 0000067088 mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-09-30 0000067088 mufg:NotRatedMember mufg:FinancialStandbyLetterOfCreditAndPerformanceGuaranteeMember 2020-09-30 0000067088 mufg:AssetBackedConduitsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 mufg:InvestmentFundsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 mufg:SpecialPurposeEntitiesCreatedForStructuredFinancingMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 mufg:RepackagedInstrumentsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 mufg:TrustArrangementsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 mufg:OtherVieMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-09-30 0000067088 srt:ConsolidationEliminationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-09-30 0000067088 mufg:SecuritizationOfMUFGGroupAssetsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember mufg:VariableInterestEntityPrimaryBeneficiaryBeforeEliminationsMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ManufacturingSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ConstructionSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember us-gaap:RealEstateSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ServicesSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:WholesaleAndRetailSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember us-gaap:FinancialServicesSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:CommunicationAndInformationServicesSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:OtherIndustriesSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember mufg:ConsumerSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:GovernmentSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:FinancialServicesSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:CommercialAndIndustrialSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember mufg:OtherSectorMember 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember 2020-09-30 0000067088 us-gaap:ExternalCreditRatingInvestmentGradeMember mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 us-gaap:ExternalCreditRatingNonInvestmentGradeMember mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 mufg:NotRatedMember mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 mufg:SingleNameCreditDefaultSwapsMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 us-gaap:ExternalCreditRatingNonInvestmentGradeMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MUFGBankLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MUFGBankLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 us-gaap:ExternalCreditRatingInvestmentGradeMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 mufg:NotRatedMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 us-gaap:CreditDefaultSwapSellingProtectionMember mufg:IndexAndBasketCreditDefaultSwapsMember 2020-09-30 0000067088 us-gaap:ExternalCreditRatingNonInvestmentGradeMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MitsubishiUFJSecuritiesHoldingsCoLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 us-gaap:ExternalCreditRatingInvestmentGradeMember mufg:IndexAndBasketCreditDefaultSwapsMember mufg:MUFGBankLtdMember us-gaap:CreditDefaultSwapSellingProtectionMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsNonrecurringMember us-gaap:PrivateEquityFundsMember 2020-09-30 0000067088 us-gaap:GeographicDistributionDomesticMember us-gaap:CommercialPortfolioSegmentMember 2020-09-30 0000067088 us-gaap:GeographicDistributionForeignMember us-gaap:CommercialPortfolioSegmentMember 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember 2020-09-30 0000067088 us-gaap:AccountingStandardsUpdate201602Member us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:RetainedEarningsUnappropriatedMember 2020-09-30 0000067088 us-gaap:AccountingStandardsUpdate201905Member us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:RetainedEarningsUnappropriatedMember 2020-09-30 0000067088 us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:AccountingStandardsUpdate201905Member us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-09-30 0000067088 us-gaap:NoncontrollingInterestMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:AccountingStandardsUpdate201905Member 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsCorporationMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsCorporationMember us-gaap:CommercialMortgageBackedSecuritiesMember 2020-09-30 0000067088 mufg:VariableInterestEntityPrimaryBeneficiaryLiabilitiesWithRecourseEliminationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 mufg:FinancingReceivables1To3MonthsPastDueMember 2020-09-30 0000067088 mufg:FinancingReceivablesGreaterThan3MonthsPastDueMember 2020-09-30 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember us-gaap:OtherDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember us-gaap:OtherDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:OtherDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember us-gaap:CommercialPaperMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:CommercialPaperMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:EquitySecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:EquitySecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquitySecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:InterestRateContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:InterestRateContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:InterestRateContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignExchangeContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignExchangeContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ForeignExchangeContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel1Member us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:CommodityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CommodityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommodityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel2Member us-gaap:CreditRiskContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:CreditRiskContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CreditRiskContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialPaperMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialPaperMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember us-gaap:FairValueInputsLevel1Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapaneseNationalGovernmentAndJapaneseGovernmentAgencyBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapanesePrefecturalAndMunicipalBondsMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:JapanesePrefecturalAndMunicipalBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:FairValueInputsLevel1Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CorporateDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:ResidentialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:CommercialMortgageBackedSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:OtherDebtSecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:MarketableEquitySecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:MarketableEquitySecuritiesMember us-gaap:FairValueInputsLevel2Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:MarketableEquitySecuritiesMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueInputsLevel3Member 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember mufg:NonMarketableEquitySecuritiesMember 2020-09-30 0000067088 us-gaap:EquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:PrivateEquityFundsMember 2020-09-30 0000067088 us-gaap:RealEstateFundsMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:PrivateEquityAndOtherFundsMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember srt:WeightedAverageMember mufg:InternalModelMember us-gaap:MeasurementInputDefaultRateMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputRecoveryRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputRecoveryRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputComparabilityAdjustmentMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDiscountRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDiscountRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputPrepaymentRateMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember mufg:MeasurementInputRecoveryRateMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputLiquidityPremiumMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputLiquidityPremiumMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:MeasurementInputDefaultRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputRecoveryRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputComparabilityAdjustmentMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputDiscountRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember us-gaap:MeasurementInputPrepaymentRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:ResidentialAndCommercialMortgagebackedSecuritiesAndAssetbackedSecuritiesMember mufg:InternalModelMember mufg:MeasurementInputRecoveryRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputLiquidityPremiumMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember us-gaap:MeasurementInputDefaultRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputRecoveryRateMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:OtherDebtSecuritiesMember mufg:ReturnOnEquityMethodMember mufg:MeasurementInputMarketRequiredReturnOnCapitalMember srt:WeightedAverageMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:InterestRateContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:ForeignExchangeContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:EquityContractMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember us-gaap:ValuationTechniqueOptionPricingModelMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember us-gaap:ValuationTechniqueOptionPricingModelMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InterestRateContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember mufg:MeasurementInputInterestRateCorrelationMember srt:MinimumMember us-gaap:ValuationTechniqueOptionPricingModelMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember mufg:MeasurementInputInterestRateCorrelationMember srt:MaximumMember us-gaap:ValuationTechniqueOptionPricingModelMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember mufg:MeasurementInputCorrelationBetweenForeignExchangeRateMember us-gaap:ValuationTechniqueOptionPricingModelMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputForeignExchangeRateAndEquityCorrelationMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputForeignExchangeRateAndEquityCorrelationMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenEquitiesMember us-gaap:EquityContractMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenEquitiesMember us-gaap:EquityContractMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputTermOfLitigationMember srt:MinimumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:EquityContractMember us-gaap:ValuationTechniqueDiscountedCashFlowMember mufg:MeasurementInputTermOfLitigationMember srt:MaximumMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember us-gaap:InterestRateContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember us-gaap:InterestRateContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember us-gaap:InterestRateContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateCorrelationMember us-gaap:ForeignExchangeContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputInterestRateAndForeignExchangeRateCorrelationMember us-gaap:ForeignExchangeContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenForeignExchangeRateMember us-gaap:ForeignExchangeContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember us-gaap:ForeignExchangeContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputForeignExchangeRateAndEquityCorrelationMember us-gaap:EquityContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember mufg:MeasurementInputCorrelationBetweenEquitiesMember us-gaap:EquityContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:ValuationTechniqueOptionPricingModelMember us-gaap:MeasurementInputOptionVolatilityMember us-gaap:EquityContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member mufg:MeasurementInputTermOfLitigationMember us-gaap:ValuationTechniqueDiscountedCashFlowMember us-gaap:EquityContractMember srt:MedianMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:NormalMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:CloseWatchMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:NormalMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:CloseWatchMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember mufg:LikelyToBecomeBankruptOrLegallyVirtuallyBankruptMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:AccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember mufg:NonAccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember mufg:AccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:CardPortfolioSegmentMember mufg:NonAccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember us-gaap:PerformingFinancingReceivableMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember mufg:UnderPerformingMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember us-gaap:NonperformingFinancingReceivableMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:AccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember mufg:NonAccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnNumberOfDelinquenciesMember mufg:AccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnInternalCreditRatingsMember us-gaap:PassMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnInternalCreditRatingsMember us-gaap:SpecialMentionMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnInternalCreditRatingsMember mufg:ClassifiedMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember mufg:CreditQualityBasedOnNumberOfDelinquenciesMember mufg:NonAccrualMember mufg:ExcludingLoansHeldForSaleAndCoveredLoansMember 2020-09-30 0000067088 mufg:CallLoansAndFundsSoldAndReceivablesUnderResaleAndReceivablesUnderSecuritiesBorrowingTransactionsAgreementsMember 2020-09-30 0000067088 us-gaap:SubsequentEventMember us-gaap:CommonStockMember 2020-11-30 0000067088 us-gaap:MaterialReconcilingItemsMember 2019-04-01 2019-09-30 0000067088 us-gaap:ParentMember us-gaap:RetainedEarningsUnappropriatedMember 2019-04-01 2019-09-30 0000067088 mufg:NonMarketableEquitySecuritiesMember mufg:AlternativeMeasurementMember 2019-04-01 2019-09-30 0000067088 country:JP mufg:PensionBenefitsAndSIPsMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-04-01 2019-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember 2019-04-01 2019-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember 2019-04-01 2019-09-30 0000067088 mufg:CardPortfolioSegmentMember 2019-04-01 2019-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2019-04-01 2019-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember 2019-04-01 2019-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember us-gaap:InterestRateContractMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember us-gaap:InterestRateContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:InterestRateContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember us-gaap:ForeignExchangeContractMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember us-gaap:ForeignExchangeContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignExchangeContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember us-gaap:EquityContractMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember us-gaap:EquityContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:EquityContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember us-gaap:CommodityContractMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember us-gaap:CommodityContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:CommodityContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember us-gaap:CreditRiskContractMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember us-gaap:CreditRiskContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:CreditRiskContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember us-gaap:OtherContractMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember us-gaap:OtherContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:OtherContractMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignCurrencyGainLossMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountProfitsLossesNetMember 2019-04-01 2019-09-30 0000067088 us-gaap:DepositAccountMember 2019-04-01 2019-09-30 0000067088 mufg:RemittancesAndTransfersMember 2019-04-01 2019-09-30 0000067088 mufg:ForeignTradingBusinessMember 2019-04-01 2019-09-30 0000067088 us-gaap:CreditCardMember 2019-04-01 2019-09-30 0000067088 mufg:SecurityRelatedServicesMember 2019-04-01 2019-09-30 0000067088 us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember 2019-04-01 2019-09-30 0000067088 us-gaap:FiduciaryAndTrustMember 2019-04-01 2019-09-30 0000067088 us-gaap:GuaranteesMember 2019-04-01 2019-09-30 0000067088 mufg:InsuranceCommissionsMember 2019-04-01 2019-09-30 0000067088 us-gaap:RealEstateMember 2019-04-01 2019-09-30 0000067088 mufg:OtherFeesAndCommissionsMember 2019-04-01 2019-09-30 0000067088 us-gaap:SecuritiesAssetsMember 2019-04-01 2019-09-30 0000067088 us-gaap:LoansReceivableMember 2019-04-01 2019-09-30 0000067088 us-gaap:LoansReceivableMember mufg:LoansHeldForSaleMember 2019-04-01 2019-09-30 0000067088 us-gaap:LoansReceivableMember mufg:CollateralDependentLoansMember 2019-04-01 2019-09-30 0000067088 us-gaap:PropertyPlantAndEquipmentMember 2019-04-01 2019-09-30 0000067088 mufg:IntangibleAssetsMember 2019-04-01 2019-09-30 0000067088 us-gaap:GoodwillMember 2019-04-01 2019-09-30 0000067088 us-gaap:OtherAssetsMember 2019-04-01 2019-09-30 0000067088 us-gaap:OtherAssetsMember us-gaap:EquityMethodInvestmentsMember 2019-04-01 2019-09-30 0000067088 us-gaap:OtherAssetsMember mufg:OtherInOtherAssetsFairValueDisclosureMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:GlobalMarketsBusinessGroupMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember 2019-04-01 2019-09-30 0000067088 mufg:GlobalCorporateAndInvestmentBankingBusinessGroupMember us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember 2019-04-01 2019-09-30 0000067088 mufg:CorporateAndEliminationsMember 2019-04-01 2019-09-30 0000067088 mufg:RetailAndCommercialBankingBusinessGroupMember mufg:CustomerBusinessMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCommercialBankingBusinessGroupMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountMember mufg:TradingAccountSecuritiesMember us-gaap:AssetsMember 2019-04-01 2019-09-30 0000067088 mufg:ForeignExchangeGainsLossesMember mufg:TradingAccountSecuritiesMember us-gaap:AssetsMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountSecuritiesMember us-gaap:AssetsMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountMember us-gaap:AssetsMember 2019-04-01 2019-09-30 0000067088 mufg:ForeignExchangeGainsLossesMember us-gaap:AssetsMember 2019-04-01 2019-09-30 0000067088 us-gaap:AssetsMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountMember mufg:OtherShortTermBorrowingMember us-gaap:LiabilityMember 2019-04-01 2019-09-30 0000067088 mufg:OtherShortTermBorrowingMember us-gaap:LiabilityMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountMember mufg:LongTermDebtIncludingCapitalLeaseMember us-gaap:LiabilityMember 2019-04-01 2019-09-30 0000067088 mufg:LongTermDebtIncludingCapitalLeaseMember us-gaap:LiabilityMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountMember us-gaap:LiabilityMember 2019-04-01 2019-09-30 0000067088 us-gaap:LiabilityMember 2019-04-01 2019-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember 2019-04-01 2019-09-30 0000067088 us-gaap:AdditionalPaidInCapitalMember us-gaap:ParentMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:RetailAndCommercialBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCorporateAndInvestmentBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCommercialBankingBusinessGroupMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:AssetManagementAndInvestorServicesBusinessGroupMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:GlobalMarketsBusinessGroupMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 mufg:CorporateAndEliminationsMember mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 mufg:OtherThanBKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:RetailAndCommercialBankingBusinessGroupMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:AssetManagementAndInvestorServicesBusinessGroupMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:RetailAndCommercialBankingBusinessGroupMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:JapaneseCorporateAndInvestmentBankingBusinessGroupMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCorporateAndInvestmentBankingBusinessGroupMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:GlobalCommercialBankingBusinessGroupMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:AssetManagementAndInvestorServicesBusinessGroupMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:CustomerBusinessMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 us-gaap:OperatingSegmentsMember mufg:GlobalMarketsBusinessGroupMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 mufg:CorporateAndEliminationsMember mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 mufg:BKAndTBMember 2019-04-01 2019-09-30 0000067088 mufg:NetGainsOnSalesAndRedemptionsOfSecuritiesAvailableForSaleMember us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:TreasuryStockMember us-gaap:ParentMember 2019-04-01 2019-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionDomesticMember 2019-04-01 2019-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:GeographicDistributionForeignMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedTranslationAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 mufg:AccumulatedDefinedBenefitPlansAdjustmentNetGainLossDueToSettlementsAndCurtailmentsAndOtherMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:NoncontrollingInterestMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-04-01 2019-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:OtherAssetsFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:CommodityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:EquityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:TradingAccountTradingSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 us-gaap:AccumulatedOtherComprehensiveIncomeMember us-gaap:ParentMember 2019-04-01 2019-09-30 0000067088 mufg:OtherLiabilitiesFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2019-04-01 2019-09-30 0000067088 mufg:MorganStanleyMember 2019-04-01 2019-09-30 0000067088 mufg:MorganStanleyMember us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvesteesMember 2019-04-01 2019-09-30 0000067088 us-gaap:SubsequentEventMember us-gaap:CommonStockMember 2020-11-30 2020-11-30 0000067088 us-gaap:AccountingStandardsUpdate201602Member us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:RetainedEarningsUnappropriatedMember 2019-09-30 0000067088 us-gaap:AccountingStandardsUpdate201905Member us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:RetainedEarningsUnappropriatedMember 2019-09-30 0000067088 us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:AccountingStandardsUpdate201905Member us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-09-30 0000067088 us-gaap:NoncontrollingInterestMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:AccountingStandardsUpdate201905Member 2019-09-30 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2019-09-30 0000067088 mufg:BKAcquisitionOfDVBBankSEsAviationFinanceDivisionMember 2019-11-18 2019-11-18 0000067088 mufg:BKAcquisitionOfDVBBankSEsAviationFinanceDivisionMember 2019-11-18 0000067088 mufg:MUFGAmericasHoldingsCorporationMember us-gaap:CashFlowHedgingMember us-gaap:InterestRateContractMember mufg:DesignatedInterestRateOneMember 2020-06-30 0000067088 mufg:MUFGAmericasHoldingsCorporationMember us-gaap:CashFlowHedgingMember us-gaap:InterestRateContractMember mufg:DesignatedInterestRateTwoMember 2020-06-30 0000067088 us-gaap:CashFlowHedgingMember mufg:MUFGAmericasHoldingsCorporationMember srt:WeightedAverageMember 2020-01-01 2020-06-30 0000067088 mufg:MUFGAmericasHoldingsCorporationMember 2020-01-01 2020-06-30 0000067088 mufg:BKAcquisitionOfBankDanamonMember 2019-04-29 2019-09-30 0000067088 mufg:ForeignSubsidiariesMember 2020-07-01 2020-09-30 0000067088 srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:AccountingStandardsUpdate201613Member 2020-04-01 0000067088 srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustmentMember us-gaap:AccountingStandardsUpdate201613Member 2020-04-01 0000067088 us-gaap:CommercialPortfolioSegmentMember us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 mufg:CardPortfolioSegmentMember us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 mufg:KrungsriPortfolioSegmentMember us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 us-gaap:UnallocatedFinancingReceivablesMember us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 us-gaap:AccountingStandardsUpdate201905Member srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-03-31 0000067088 mufg:CapitalStockMember us-gaap:ParentMember 2020-03-31 0000067088 us-gaap:RetainedEarningsAppropriatedMember us-gaap:ParentMember 2020-03-31 0000067088 us-gaap:AdditionalPaidInCapitalMember us-gaap:ParentMember 2020-03-31 0000067088 us-gaap:RetainedEarningsUnappropriatedMember us-gaap:ParentMember 2020-03-31 0000067088 us-gaap:TreasuryStockMember us-gaap:ParentMember 2020-03-31 0000067088 us-gaap:NoncontrollingInterestMember 2020-03-31 0000067088 us-gaap:AccumulatedOtherComprehensiveIncomeMember us-gaap:ParentMember 2020-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:OtherAssetsFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:NonMarketableEquitySecuritiesMember mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:InterestRateContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:EquityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:CommodityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:OtherContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:CreditRiskContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:TradingAccountTradingSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:TradingAccountEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:TradingAccountTradingSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:TradingAccountEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:EquityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:CommodityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:OtherContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:NonMarketableEquitySecuritiesMember mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:OtherAssetsFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 mufg:OtherLiabilitiesFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2020-03-31 0000067088 mufg:OtherLiabilitiesFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2020-09-30 0000067088 us-gaap:AdditionalPaidInCapitalMember us-gaap:ParentMember 2020-09-30 0000067088 us-gaap:RetainedEarningsAppropriatedMember us-gaap:ParentMember 2020-09-30 0000067088 mufg:CapitalStockMember us-gaap:ParentMember 2020-09-30 0000067088 us-gaap:TreasuryStockMember us-gaap:ParentMember 2020-09-30 0000067088 us-gaap:ParentMember 2020-09-30 0000067088 us-gaap:RetainedEarningsUnappropriatedMember us-gaap:ParentMember 2020-09-30 0000067088 us-gaap:NoncontrollingInterestMember 2020-09-30 0000067088 us-gaap:AccumulatedOtherComprehensiveIncomeMember us-gaap:ParentMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember 2020-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember 2019-03-31 0000067088 us-gaap:ResidentialPortfolioSegmentMember 2019-03-31 0000067088 mufg:CardPortfolioSegmentMember 2019-03-31 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2019-03-31 0000067088 mufg:KrungsriPortfolioSegmentMember 2019-03-31 0000067088 mufg:CapitalStockMember us-gaap:ParentMember 2019-03-31 0000067088 us-gaap:RetainedEarningsAppropriatedMember us-gaap:ParentMember 2019-03-31 0000067088 us-gaap:AdditionalPaidInCapitalMember us-gaap:ParentMember 2019-03-31 0000067088 us-gaap:RetainedEarningsUnappropriatedMember us-gaap:ParentMember 2019-03-31 0000067088 us-gaap:TreasuryStockMember us-gaap:ParentMember 2019-03-31 0000067088 us-gaap:NoncontrollingInterestMember 2019-03-31 0000067088 us-gaap:AccumulatedOtherComprehensiveIncomeMember us-gaap:ParentMember 2019-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:TradingAccountTradingSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:TradingAccountEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:InterestRateContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:EquityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:CommodityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:CreditRiskContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:OtherAssetsFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 us-gaap:CorporateDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:TradingAccountTradingSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:ForeignExchangeContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:InterestRateContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:TradingAccountEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:EquityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember mufg:TradingAccountDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:CommodityContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:ForeignGovernmentsAndOfficialInstitutionsBondsMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:CreditRiskContractMember us-gaap:DerivativeFinancialInstrumentsAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember mufg:NonMarketableEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:InvestmentSecuritiesEquitySecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:CorporateDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:OtherAssetsFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:OtherDebtSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:AvailableforsaleSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 mufg:OtherLiabilitiesFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2019-03-31 0000067088 mufg:OtherLiabilitiesFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2019-09-30 0000067088 us-gaap:AdditionalPaidInCapitalMember us-gaap:ParentMember 2019-09-30 0000067088 us-gaap:RetainedEarningsAppropriatedMember us-gaap:ParentMember 2019-09-30 0000067088 mufg:CapitalStockMember us-gaap:ParentMember 2019-09-30 0000067088 us-gaap:TreasuryStockMember us-gaap:ParentMember 2019-09-30 0000067088 us-gaap:ParentMember 2019-09-30 0000067088 us-gaap:RetainedEarningsUnappropriatedMember us-gaap:ParentMember 2019-09-30 0000067088 us-gaap:NoncontrollingInterestMember 2019-09-30 0000067088 us-gaap:AccumulatedOtherComprehensiveIncomeMember us-gaap:ParentMember 2019-09-30 0000067088 us-gaap:CommercialPortfolioSegmentMember 2019-09-30 0000067088 us-gaap:ResidentialPortfolioSegmentMember 2019-09-30 0000067088 mufg:CardPortfolioSegmentMember 2019-09-30 0000067088 mufg:MUFGAmericasHoldingsPortfolioSegmentMember 2019-09-30 0000067088 mufg:KrungsriPortfolioSegmentMember 2019-09-30 0000067088 us-gaap:UnallocatedFinancingReceivablesMember 2019-09-30 iso4217:JPY xbrli:shares utr:Year utr:Month xbrli:pure utr:Day iso4217:IDR iso4217:JPY xbrli:shares mufg:Securities mufg:Offices iso4217:IDR xbrli:shares mufg:Subsidiaries utr:Y

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

Form

6-K

 

 

Report of Foreign Private Issuer

Pursuant to Rule

13a-16

or

15d-16

under

the Securities Exchange Act of 1934

For the month of December 2020

Commission File

No. 000-54189

 

 

MITSUBISHI UFJ FINANCIAL GROUP, INC.

(Translation of registrant’s name into English)

 

 

7-1,

Marunouchi

2-chome,

Chiyoda-ku

Tokyo

100-8330,

Japan

(Address of principal executive office)

 

 

Indicate by check mark whether the registrant files or

will file annual reports under cover of Form

20-F

or Form

40-F.

Form

20-F  

    X    

    Form

40-F  

                

Indicate by check mark if the registrant is submitting the Form

6-K

in paper as permitted by Regulation

S-T

Rule 101(b)(1):

Indicate by check mark if the registrant is submitting the Form

6-K

in paper as permitted by Regulation

S-T

Rule 101(b)(7):

 

 

 

THIS REPORT ON FORM

6-K

SHALL BE DEEMED TO BE INCORPORATED BY REFERENCE IN THE REGISTRATION STATEMENT ON FORM

F-3

(NO. 333-242048) OF MITSUBISHI UFJ FINANCIAL GROUP, INC. AND TO BE A PART THEREOF FROM THE DATE ON WHICH THIS REPORT IS FURNISHED TO THE U.S. SECURITIES AND EXCHANGE COMMISSION TO THE EXTENT NOT SUPERSEDED BY DOCUMENTS OR REPORTS SUBSEQUENTLY FILED WITH OR FURNISHED TO THE U.S. SECURITIES AND EXCHANGE COMMISSION.

---

EXHIBITS

 

Exhibit		Description
99(a)		Financial Review and Unaudited Condensed Consolidated Financial Statements as of and for the Six Months Ended September 30, 2020
99(b)		Capitalization and Indebtedness of Mitsubishi UFJ Financial Group, Inc. as of September 30, 2020
101.INS		Inline XBRL Instance Document—the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH		Inline XBRL Taxomony Extension Schema Document
101.CAL		Inline XBRL Taxomony Extension Calculation Linkbase Document
101.DEF		Inline XBRL Taxomony Extension Definition Linkbase Document
101.LAB		Inline XBRL Taxomony Extension Label Linkbase Document
101.PRE		Inline XBRL Taxomony Extension Presentation Linkbase Document

---

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: December 29, 2020

 

Mitsubishi UFJ Financial Group, Inc.
By:		/s/ Zenta Morokawa
Name:		Zenta Morokawa
Title:		Managing Director, Deputy Head of Corporate Administration Division

---