0000091576--12-312022Q3FALSE0.040.0250.0250.02500000915762022-01-012022-09-300000091576us-gaap:CommonStockMember2022-01-012022-09-300000091576us-gaap:SeriesEPreferredStockMember2022-01-012022-09-300000091576us-gaap:SeriesFPreferredStockMember2022-01-012022-09-300000091576us-gaap:SeriesGPreferredStockMember2022-01-012022-09-300000091576us-gaap:SeriesHPreferredStockMember2022-01-012022-09-3000000915762022-10-28xbrli:shares00000915762022-09-30iso4217:USD00000915762021-12-31iso4217:USDxbrli:shares0000091576us-gaap:ResidentialMortgageMember2022-09-300000091576us-gaap:ResidentialMortgageMember2021-12-3100000915762022-07-012022-09-3000000915762021-07-012021-09-3000000915762021-01-012021-09-300000091576us-gaap:PreferredStockMember2021-12-310000091576us-gaap:CommonStockMember2021-12-310000091576us-gaap:AdditionalPaidInCapitalMember2021-12-310000091576us-gaap:RetainedEarningsMember2021-12-310000091576us-gaap:TreasuryStockMember2021-12-310000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310000091576us-gaap:RetainedEarningsMember2022-01-012022-09-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-09-300000091576us-gaap:AdditionalPaidInCapitalMember2022-01-012022-09-300000091576us-gaap:SeriesDPreferredStockMember2022-01-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesDPreferredStockMember2022-01-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesEPreferredStockMember2022-01-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesFPreferredStockMember2022-01-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesGPreferredStockMember2022-01-012022-09-300000091576us-gaap:CommonStockMember2022-01-012022-09-300000091576us-gaap:TreasuryStockMember2022-01-012022-09-300000091576us-gaap:PreferredStockMember2022-01-012022-09-300000091576us-gaap:PreferredStockMember2022-09-300000091576us-gaap:CommonStockMember2022-09-300000091576us-gaap:AdditionalPaidInCapitalMember2022-09-300000091576us-gaap:RetainedEarningsMember2022-09-300000091576us-gaap:TreasuryStockMember2022-09-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-09-300000091576us-gaap:PreferredStockMember2022-06-300000091576us-gaap:CommonStockMember2022-06-300000091576us-gaap:AdditionalPaidInCapitalMember2022-06-300000091576us-gaap:RetainedEarningsMember2022-06-300000091576us-gaap:TreasuryStockMember2022-06-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-06-3000000915762022-06-300000091576us-gaap:RetainedEarningsMember2022-07-012022-09-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-07-012022-09-300000091576us-gaap:SeriesDPreferredStockMember2022-07-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesDPreferredStockMember2022-07-012022-09-300000091576us-gaap:SeriesEPreferredStockMember2022-07-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesEPreferredStockMember2022-07-012022-09-300000091576us-gaap:SeriesFPreferredStockMember2022-07-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesFPreferredStockMember2022-07-012022-09-300000091576us-gaap:SeriesGPreferredStockMember2022-07-012022-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesGPreferredStockMember2022-07-012022-09-300000091576us-gaap:CommonStockMember2022-07-012022-09-300000091576us-gaap:AdditionalPaidInCapitalMember2022-07-012022-09-300000091576us-gaap:TreasuryStockMember2022-07-012022-09-300000091576us-gaap:PreferredStockMember2022-07-012022-09-300000091576us-gaap:PreferredStockMember2020-12-310000091576us-gaap:CommonStockMember2020-12-310000091576us-gaap:AdditionalPaidInCapitalMember2020-12-310000091576us-gaap:RetainedEarningsMember2020-12-310000091576us-gaap:TreasuryStockMember2020-12-310000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-3100000915762020-12-310000091576us-gaap:RetainedEarningsMember2021-01-012021-09-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-01-012021-09-300000091576us-gaap:AdditionalPaidInCapitalMember2021-01-012021-09-300000091576us-gaap:SeriesDPreferredStockMember2021-01-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesDPreferredStockMember2021-01-012021-09-300000091576us-gaap:SeriesEPreferredStockMember2021-01-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesEPreferredStockMember2021-01-012021-09-300000091576us-gaap:SeriesFPreferredStockMember2021-01-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesFPreferredStockMember2021-01-012021-09-300000091576us-gaap:SeriesGPreferredStockMember2021-01-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesGPreferredStockMember2021-01-012021-09-300000091576us-gaap:CommonStockMember2021-01-012021-09-300000091576us-gaap:TreasuryStockMember2021-01-012021-09-300000091576us-gaap:PreferredStockMember2021-09-300000091576us-gaap:CommonStockMember2021-09-300000091576us-gaap:AdditionalPaidInCapitalMember2021-09-300000091576us-gaap:RetainedEarningsMember2021-09-300000091576us-gaap:TreasuryStockMember2021-09-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-09-3000000915762021-09-300000091576us-gaap:PreferredStockMember2021-06-300000091576us-gaap:CommonStockMember2021-06-300000091576us-gaap:AdditionalPaidInCapitalMember2021-06-300000091576us-gaap:RetainedEarningsMember2021-06-300000091576us-gaap:TreasuryStockMember2021-06-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-06-3000000915762021-06-300000091576us-gaap:RetainedEarningsMember2021-07-012021-09-300000091576us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-07-012021-09-300000091576us-gaap:AdditionalPaidInCapitalMember2021-07-012021-09-300000091576us-gaap:SeriesDPreferredStockMember2021-07-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesDPreferredStockMember2021-07-012021-09-300000091576us-gaap:SeriesEPreferredStockMember2021-07-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesEPreferredStockMember2021-07-012021-09-300000091576us-gaap:SeriesFPreferredStockMember2021-07-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesFPreferredStockMember2021-07-012021-09-300000091576us-gaap:SeriesGPreferredStockMember2021-07-012021-09-300000091576us-gaap:RetainedEarningsMemberus-gaap:SeriesGPreferredStockMember2021-07-012021-09-300000091576us-gaap:CommonStockMember2021-07-012021-09-300000091576us-gaap:TreasuryStockMember2021-07-012021-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-12-310000091576key:ResidentialPrimeFinancingReceivablesMemberus-gaap:ConsumerPortfolioSegmentMember2022-09-300000091576key:ResidentialPrimeFinancingReceivablesMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMember2021-12-310000091576us-gaap:CreditCardReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:CreditCardReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:CollateralPledgedMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:CollateralPledgedMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:EducationLendingMemberus-gaap:SegmentDiscontinuedOperationsMember2022-09-300000091576key:EducationLendingMemberus-gaap:SegmentDiscontinuedOperationsMember2021-12-310000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-06-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-06-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-07-012022-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2022-06-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-06-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-07-012022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2022-06-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:CommercialPortfolioSegmentMember2022-06-300000091576us-gaap:CommercialPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2022-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2022-07-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-07-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2022-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2022-07-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2022-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2022-07-012022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2022-06-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMember2022-06-300000091576us-gaap:ConsumerPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:SegmentDiscontinuedOperationsMember2022-06-300000091576us-gaap:SegmentDiscontinuedOperationsMember2022-07-012022-09-300000091576us-gaap:SegmentDiscontinuedOperationsMember2022-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-06-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-07-012021-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-06-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-07-012021-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2021-06-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2021-07-012021-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2021-09-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-06-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-07-012021-09-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2021-06-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2021-07-012021-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2021-09-300000091576us-gaap:CommercialPortfolioSegmentMember2021-06-300000091576us-gaap:CommercialPortfolioSegmentMember2021-07-012021-09-300000091576us-gaap:CommercialPortfolioSegmentMember2021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2021-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2021-07-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-07-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2021-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2021-07-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2021-06-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2021-07-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2021-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2021-06-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2021-07-012021-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2021-09-300000091576us-gaap:ConsumerPortfolioSegmentMember2021-06-300000091576us-gaap:ConsumerPortfolioSegmentMember2021-07-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMember2021-09-300000091576us-gaap:SegmentDiscontinuedOperationsMember2021-06-300000091576us-gaap:SegmentDiscontinuedOperationsMember2021-07-012021-09-300000091576us-gaap:SegmentDiscontinuedOperationsMember2021-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-01-012022-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2022-01-012022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:SegmentDiscontinuedOperationsMember2021-12-310000091576us-gaap:SegmentDiscontinuedOperationsMember2022-01-012022-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2020-12-310000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-01-012021-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310000091576us-gaap:ConstructionLoansMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-09-300000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310000091576us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-09-300000091576us-gaap:CommercialPortfolioSegmentMember2020-12-310000091576us-gaap:CommercialPortfolioSegmentMember2021-01-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2020-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2021-01-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2020-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-01-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2020-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2021-01-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2020-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2021-01-012021-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2021-01-012021-09-300000091576us-gaap:ConsumerPortfolioSegmentMember2020-12-310000091576us-gaap:ConsumerPortfolioSegmentMember2021-01-012021-09-300000091576us-gaap:SegmentDiscontinuedOperationsMember2020-12-310000091576us-gaap:SegmentDiscontinuedOperationsMember2021-01-012021-09-300000091576us-gaap:SegmentContinuingOperationsMemberus-gaap:CommercialPortfolioSegmentMember2022-07-012022-09-30xbrli:pure0000091576us-gaap:SegmentContinuingOperationsMemberus-gaap:ConsumerPortfolioSegmentMember2022-07-012022-09-300000091576us-gaap:PassMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CriticizedAccruingMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialAndIndustrialMemberkey:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576key:CriticizedAccruingMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576key:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576us-gaap:ConstructionLoansMemberus-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:ConstructionLoansMemberkey:CriticizedAccruingMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:ConstructionLoansMemberkey:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CriticizedAccruingMemberkey:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberkey:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:PassMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CriticizedAccruingMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialAndIndustrialMemberkey:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576key:CriticizedAccruingMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576key:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576us-gaap:ConstructionLoansMemberus-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:ConstructionLoansMemberkey:CriticizedAccruingMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:ConstructionLoansMemberkey:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CriticizedAccruingMemberkey:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberkey:CriticizedNonaccruingMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreGreaterThan750Memberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScore660to749Memberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreLessthan660Memberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreNoScoreMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScoreGreaterThan750Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScore660to749Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScoreLessthan660Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScoreNoScoreMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberkey:FICOScoreGreaterThan750Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScore660to749Memberkey:ConsumerDirectLoansMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreLessthan660Memberkey:ConsumerDirectLoansMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberkey:FICOScoreNoScoreMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScoreGreaterThan750Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScore660to749Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScoreLessthan660Member2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScoreNoScoreMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreGreaterThan750Member2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScore660to749Member2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreLessthan660Member2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreNoScoreMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreGreaterThan750Memberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScore660to749Memberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreLessthan660Memberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreNoScoreMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScoreGreaterThan750Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScore660to749Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScoreLessthan660Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberkey:FICOScoreNoScoreMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberkey:FICOScoreGreaterThan750Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScore660to749Memberkey:ConsumerDirectLoansMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreLessthan660Memberkey:ConsumerDirectLoansMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberkey:FICOScoreNoScoreMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScoreGreaterThan750Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScore660to749Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScoreLessthan660Member2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberkey:FICOScoreNoScoreMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreGreaterThan750Member2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScore660to749Member2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreLessthan660Member2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberkey:FICOScoreNoScoreMember2021-12-310000091576key:CommercialAndIndustrialMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:NonperformingFinancingReceivableMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancialAssetPastDueMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialRealEstateConstructionMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-09-300000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-09-300000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-09-300000091576us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576key:CommercialLeaseFinancingMemberus-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMemberkey:RealEstateResidentialMortgageMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancialAssetNotPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:HomeEquityLoanMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:NonperformingFinancingReceivableMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancialAssetPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:FinancialAssetNotPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberkey:ConsumerDirectLoansMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberkey:ConsumerDirectLoansMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:NonperformingFinancingReceivableMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMemberkey:ConsumerDirectLoansMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancialAssetNotPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:NonperformingFinancingReceivableMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancialAssetPastDueMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2022-09-300000091576us-gaap:FinancialAssetNotPastDueMember2022-09-300000091576us-gaap:FinancingReceivables30To59DaysPastDueMember2022-09-300000091576us-gaap:FinancingReceivables60To89DaysPastDueMember2022-09-300000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2022-09-300000091576us-gaap:NonperformingFinancingReceivableMember2022-09-300000091576us-gaap:FinancialAssetPastDueMember2022-09-300000091576key:CommercialAndIndustrialMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:NonperformingFinancingReceivableMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancialAssetPastDueMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialRealEstateConstructionMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-12-310000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-12-310000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-12-310000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-12-310000091576us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-12-310000091576us-gaap:CommercialPortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576key:CommercialLeaseFinancingMemberus-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancialAssetNotPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:FinancialAssetPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMemberkey:RealEstateResidentialMortgageMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:HomeEquityLoanMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:NonperformingFinancingReceivableMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:FinancialAssetPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberkey:ConsumerDirectLoansMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberkey:ConsumerDirectLoansMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:NonperformingFinancingReceivableMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMemberkey:ConsumerDirectLoansMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:NonperformingFinancingReceivableMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:CreditCardReceivablesMemberus-gaap:FinancialAssetPastDueMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2021-12-310000091576us-gaap:FinancialAssetNotPastDueMember2021-12-310000091576us-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310000091576us-gaap:FinancingReceivables60To89DaysPastDueMember2021-12-310000091576us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2021-12-310000091576us-gaap:NonperformingFinancingReceivableMember2021-12-310000091576us-gaap:FinancialAssetPastDueMember2021-12-310000091576key:RealEstateResidentialMortgageMember2022-01-012022-09-300000091576key:RealEstateResidentialMortgageMember2021-01-012021-12-310000091576us-gaap:NonperformingFinancingReceivableMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-30key:loan0000091576us-gaap:NonperformingFinancingReceivableMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-12-310000091576us-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:CommercialRealEstateCommercialMortgageMember2022-01-012022-09-300000091576us-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:CommercialRealEstateCommercialMortgageMember2021-01-012021-12-310000091576us-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:CommercialRealEstateLoansMember2022-01-012022-09-300000091576us-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:CommercialRealEstateLoansMember2021-01-012021-12-310000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576us-gaap:NonperformingFinancingReceivableMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:RealEstateResidentialMortgageMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMemberkey:RealEstateResidentialMortgageMember2021-01-012021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:NonperformingFinancingReceivableMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMemberus-gaap:NonperformingFinancingReceivableMember2021-01-012021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:NonperformingFinancingReceivableMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMemberus-gaap:NonperformingFinancingReceivableMember2021-01-012021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMemberus-gaap:NonperformingFinancingReceivableMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMemberus-gaap:NonperformingFinancingReceivableMember2021-01-012021-12-310000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2022-01-012022-09-300000091576key:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2021-01-012021-12-310000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2022-01-012022-09-300000091576us-gaap:ConsumerPortfolioSegmentMemberus-gaap:NonperformingFinancingReceivableMember2021-01-012021-12-310000091576us-gaap:NonperformingFinancingReceivableMember2022-01-012022-09-300000091576us-gaap:NonperformingFinancingReceivableMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberkey:CommercialAndIndustrialMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberkey:CommercialRealEstateCommercialMortgageMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberkey:CommercialRealEstateLoansMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberkey:CommercialRealEstateLoansMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberkey:RealEstateResidentialMortgageMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityLoanMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerDirectLoansMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMemberkey:ConsumerCreditCardMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberkey:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberkey:ConsumerIndirectLoansMemberus-gaap:ConsumerPortfolioSegmentMember2021-01-012021-12-310000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMember2022-01-012022-09-300000091576key:PriorYearAccruingMemberus-gaap:ConsumerPortfolioSegmentMember2021-01-012021-12-310000091576key:PriorYearAccruingMember2022-01-012022-09-300000091576key:PriorYearAccruingMember2021-01-012021-12-3100000915762021-01-012021-12-310000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:OtherDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberkey:PrincipalDirectInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberkey:PrincipalDirectInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:PrincipalDirectInvestmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:PrincipalDirectInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:PrincipalDirectInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:PrincipalIndirectInvestmentsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:PrincipalIndirectInvestmentsMemberus-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMemberkey:PrincipalInvestmentsMember2021-12-310000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:EquityInvestmentsDirectMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMemberkey:EquityInvestmentsDirectNAVMember2022-09-300000091576us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:FairValueMeasurementsRecurringMemberkey:EquityInvestmentsDirectNAVMember2021-12-310000091576us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberkey:EquityInvestmentsIndirectNAVMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberkey:EquityInvestmentsIndirectNAVMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberkey:EquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576key:EquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberkey:EquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:EquityInvestmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:EquityInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:EquityInvestmentsMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommodityContractMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommodityContractMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:ShortMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ShortMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ShortMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ShortMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ShortMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ShortMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ShortMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ShortMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576us-gaap:LongMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576key:PrincipalInvestmentsMemberkey:DirectInvestmentsMember2022-09-300000091576key:PrincipalInvestmentsMemberkey:DirectInvestmentsMember2022-07-012022-09-300000091576key:PrincipalInvestmentsMemberkey:DirectInvestmentsMember2021-07-012021-09-300000091576key:PrincipalInvestmentsMemberkey:DirectInvestmentsMember2022-01-012022-09-300000091576key:PrincipalInvestmentsMemberkey:DirectInvestmentsMember2021-01-012021-09-300000091576key:IndirectInvestmentsMemberkey:PrincipalInvestmentsMember2022-09-300000091576key:IndirectInvestmentsMemberkey:PrincipalInvestmentsMember2022-07-012022-09-300000091576key:IndirectInvestmentsMemberkey:PrincipalInvestmentsMember2021-07-012021-09-300000091576key:IndirectInvestmentsMemberkey:PrincipalInvestmentsMember2022-01-012022-09-300000091576key:IndirectInvestmentsMemberkey:PrincipalInvestmentsMember2021-01-012021-09-300000091576key:PrincipalInvestmentsMember2022-09-300000091576key:PrincipalInvestmentsMember2022-07-012022-09-300000091576key:PrincipalInvestmentsMember2021-07-012021-09-300000091576key:PrincipalInvestmentsMember2022-01-012022-09-300000091576key:PrincipalInvestmentsMember2021-01-012021-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2021-12-310000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2022-01-012022-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2022-09-300000091576us-gaap:OtherInvestmentsMember2021-12-310000091576us-gaap:OtherInvestmentsMember2022-01-012022-09-300000091576us-gaap:OtherInvestmentsMember2022-09-300000091576key:LoansHeldForInvestmentFairValueMember2021-12-310000091576key:LoansHeldForInvestmentFairValueMember2022-01-012022-09-300000091576key:LoansHeldForInvestmentFairValueMember2022-09-300000091576us-gaap:InterestRateContractMember2021-12-310000091576us-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:InterestRateContractMember2022-09-300000091576us-gaap:CreditRiskContractMember2021-12-310000091576us-gaap:CreditRiskContractMember2022-01-012022-09-300000091576us-gaap:CreditRiskContractMember2022-09-300000091576us-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:OtherCreditDerivativesMember2022-01-012022-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2022-06-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2022-07-012022-09-300000091576us-gaap:OtherInvestmentsMember2022-06-300000091576us-gaap:OtherInvestmentsMember2022-07-012022-09-300000091576key:LoansHeldForSaleFairValueMember2022-06-300000091576key:LoansHeldForSaleFairValueMember2022-07-012022-09-300000091576key:LoansHeldForSaleFairValueMember2022-09-300000091576key:LoansHeldForInvestmentFairValueMember2022-06-300000091576key:LoansHeldForInvestmentFairValueMember2022-07-012022-09-300000091576us-gaap:InterestRateContractMember2022-06-300000091576us-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:CreditRiskContractMember2022-06-300000091576us-gaap:CreditRiskContractMember2022-07-012022-09-300000091576us-gaap:OtherCreditDerivativesMember2022-06-300000091576us-gaap:OtherCreditDerivativesMember2022-07-012022-09-300000091576us-gaap:OtherDebtSecuritiesMember2020-12-310000091576us-gaap:OtherDebtSecuritiesMember2021-01-012021-09-300000091576us-gaap:OtherDebtSecuritiesMember2021-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2020-12-310000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2021-01-012021-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2021-09-300000091576us-gaap:OtherInvestmentsMember2020-12-310000091576us-gaap:OtherInvestmentsMember2021-01-012021-09-300000091576us-gaap:OtherInvestmentsMember2021-09-300000091576key:LoansHeldForSaleFairValueMember2020-12-310000091576key:LoansHeldForSaleFairValueMember2021-01-012021-09-300000091576key:LoansHeldForSaleFairValueMember2021-09-300000091576key:LoansHeldForInvestmentFairValueMember2020-12-310000091576key:LoansHeldForInvestmentFairValueMember2021-01-012021-09-300000091576key:LoansHeldForInvestmentFairValueMember2021-09-300000091576us-gaap:InterestRateContractMember2020-12-310000091576us-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:InterestRateContractMember2021-09-300000091576us-gaap:CreditRiskContractMember2020-12-310000091576us-gaap:CreditRiskContractMember2021-01-012021-09-300000091576us-gaap:CreditRiskContractMember2021-09-300000091576us-gaap:OtherCreditDerivativesMember2020-12-310000091576us-gaap:OtherCreditDerivativesMember2021-01-012021-09-300000091576us-gaap:OtherCreditDerivativesMember2021-09-300000091576us-gaap:OtherDebtSecuritiesMember2021-06-300000091576us-gaap:OtherDebtSecuritiesMember2021-07-012021-09-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2021-06-300000091576key:PrincipalDirectInvestmentsMemberus-gaap:OtherInvestmentsMember2021-07-012021-09-300000091576us-gaap:OtherInvestmentsMember2021-06-300000091576us-gaap:OtherInvestmentsMember2021-07-012021-09-300000091576key:LoansHeldForSaleFairValueMember2021-06-300000091576key:LoansHeldForSaleFairValueMember2021-07-012021-09-300000091576key:LoansHeldForInvestmentFairValueMember2021-06-300000091576key:LoansHeldForInvestmentFairValueMember2021-07-012021-09-300000091576us-gaap:InterestRateContractMember2021-06-300000091576us-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:CreditRiskContractMember2021-06-300000091576us-gaap:CreditRiskContractMember2021-07-012021-09-300000091576us-gaap:OtherCreditDerivativesMember2021-06-300000091576us-gaap:OtherCreditDerivativesMember2021-07-012021-09-300000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsNonrecurringMember2022-09-300000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Member2022-09-300000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2022-09-300000091576us-gaap:FairValueMeasurementsNonrecurringMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsNonrecurringMember2021-12-310000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2021-12-310000091576us-gaap:FairValueMeasurementsNonrecurringMember2021-12-310000091576us-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-09-300000091576us-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310000091576srt:MinimumMemberus-gaap:MeasurementInputComparabilityAdjustmentMemberus-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2022-09-300000091576us-gaap:MeasurementInputComparabilityAdjustmentMemberus-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Member2022-09-300000091576us-gaap:MeasurementInputComparabilityAdjustmentMemberus-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueMeasurementsRecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Member2022-09-300000091576srt:MinimumMemberus-gaap:MeasurementInputComparabilityAdjustmentMemberus-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2021-12-310000091576us-gaap:MeasurementInputComparabilityAdjustmentMemberus-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Member2021-12-310000091576us-gaap:MeasurementInputComparabilityAdjustmentMemberus-gaap:MarketApproachValuationTechniqueMemberus-gaap:FairValueMeasurementsRecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Member2021-12-310000091576us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310000091576srt:MinimumMemberus-gaap:MeasurementInputDefaultRateMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:MeasurementInputDefaultRateMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:MeasurementInputDefaultRateMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2022-09-300000091576srt:MinimumMemberus-gaap:MeasurementInputDefaultRateMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:MeasurementInputDefaultRateMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:MeasurementInputDefaultRateMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2021-12-310000091576srt:MinimumMemberkey:MeasurementInputLossGivenDefaultMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2022-09-300000091576key:MeasurementInputLossGivenDefaultMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2022-09-300000091576key:MeasurementInputLossGivenDefaultMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2022-09-300000091576srt:MinimumMemberkey:MeasurementInputLossGivenDefaultMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2021-12-310000091576key:MeasurementInputLossGivenDefaultMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2021-12-310000091576key:MeasurementInputLossGivenDefaultMemberus-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueMeasurementsRecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Memberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:FairValueInputsLevel3Member2022-09-300000091576us-gaap:FairValueInputsLevel3Member2021-12-310000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2022-09-300000091576us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2021-12-310000091576srt:MinimumMemberus-gaap:MeasurementInputDiscountRateMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2022-09-300000091576us-gaap:MeasurementInputDiscountRateMemberus-gaap:FairValueMeasurementsNonrecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2022-09-300000091576us-gaap:MeasurementInputDiscountRateMemberus-gaap:FairValueMeasurementsNonrecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2022-09-300000091576srt:MinimumMemberus-gaap:MeasurementInputDiscountRateMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2021-12-310000091576us-gaap:MeasurementInputDiscountRateMemberus-gaap:FairValueMeasurementsNonrecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2021-12-310000091576us-gaap:MeasurementInputDiscountRateMemberus-gaap:FairValueMeasurementsNonrecurringMembersrt:WeightedAverageMemberus-gaap:FairValueInputsLevel3Memberkey:ValuationFairValueOfUnderlyingCollateralMember2021-12-310000091576key:ValuationAppraisedValueMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2022-09-300000091576key:ValuationAppraisedValueMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2021-12-310000091576us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:NondesignatedMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:NondesignatedMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-09-300000091576us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-09-300000091576us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-09-300000091576us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-09-300000091576us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-09-300000091576us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-09-300000091576us-gaap:CarryingReportedAmountFairValueDisclosureMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:FairValueMeasuredAtNetAssetValuePerShareMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:NondesignatedMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:NondesignatedMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310000091576us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310000091576us-gaap:FairValueInputsLevel1Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310000091576us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310000091576us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310000091576us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310000091576us-gaap:CarryingReportedAmountFairValueDisclosureMemberkey:EducationLendingMemberus-gaap:SegmentDiscontinuedOperationsMember2022-09-300000091576key:EducationLendingMemberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:SegmentDiscontinuedOperationsMember2022-09-300000091576us-gaap:CarryingReportedAmountFairValueDisclosureMemberkey:EducationLendingMemberus-gaap:SegmentDiscontinuedOperationsMember2021-12-310000091576key:EducationLendingMemberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:SegmentDiscontinuedOperationsMember2021-12-310000091576us-gaap:USTreasuryAndGovernmentMember2022-09-300000091576us-gaap:USTreasuryAndGovernmentMember2021-12-310000091576us-gaap:CollateralizedMortgageObligationsMember2022-09-300000091576us-gaap:CollateralizedMortgageObligationsMember2021-12-310000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:OtherDebtSecuritiesMember2022-09-300000091576us-gaap:OtherDebtSecuritiesMember2021-12-310000091576us-gaap:AssetBackedSecuritiesMember2022-09-300000091576us-gaap:AssetBackedSecuritiesMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2022-09-300000091576us-gaap:MortgageBackedSecuritiesOtherMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310000091576srt:MaximumMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-09-300000091576srt:MaximumMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310000091576us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-09-300000091576us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMember2022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:CommodityContractMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:CommodityContractMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:CreditRiskContractMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:CreditRiskContractMember2021-12-310000091576us-gaap:NondesignatedMemberus-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:NondesignatedMemberus-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:NondesignatedMember2022-09-300000091576us-gaap:NondesignatedMember2021-12-310000091576key:DerivativeFinancialInstrumentsAssetsLiabilitiesNetMember2022-09-300000091576key:DerivativeFinancialInstrumentsAssetsLiabilitiesNetMember2021-12-310000091576key:CounterpartyAndCashCollateralNettingMember2022-09-300000091576key:CounterpartyAndCashCollateralNettingMember2021-12-310000091576us-gaap:LongTermDebtMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:InterestRateContractMemberkey:DerivativeInstrumentDebtSecuritiesAvailableForSaleMember2022-09-300000091576us-gaap:LongTermDebtMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:InterestRateContractMemberkey:DerivativeInstrumentDebtSecuritiesAvailableForSaleMember2021-12-310000091576us-gaap:LongTermDebtMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMember2022-09-300000091576us-gaap:LongTermDebtMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMember2021-12-310000091576us-gaap:FairValueHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:FairValueHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2022-07-012022-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:FairValueHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2022-07-012022-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:CashFlowHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:FairValueHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2021-07-012021-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:FairValueHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2021-07-012021-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:CashFlowHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:FairValueHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2022-01-012022-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:FairValueHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2022-01-012022-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:CashFlowHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:FairValueHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2021-01-012021-09-300000091576us-gaap:FairValueHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:FairValueHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestExpenseLongTermDebtMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2021-01-012021-09-300000091576us-gaap:CashFlowHedgingMemberkey:InterestIncomeSecuritiesMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:CashFlowHedgingMemberkey:InvestmentBankingAndDebtPlacementFeesMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:InterestExpenseMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberkey:UnderwritingDiscountsFeesAndCommissionsMember2022-07-012022-09-300000091576us-gaap:InterestExpenseMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberkey:UnderwritingDiscountsFeesAndCommissionsMember2021-07-012021-09-300000091576us-gaap:InterestExpenseMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberkey:UnderwritingDiscountsFeesAndCommissionsMember2022-01-012022-09-300000091576us-gaap:InterestExpenseMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberkey:UnderwritingDiscountsFeesAndCommissionsMember2021-01-012021-09-300000091576key:CorporateServicesMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:InterestRateContractMember2022-07-012022-09-300000091576key:CorporateServicesMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:InterestRateContractMember2021-07-012021-09-300000091576us-gaap:ForeignExchangeContractMemberkey:CorporateServicesMember2022-07-012022-09-300000091576us-gaap:ForeignExchangeContractMemberkey:ConsumerMortgageIncomeMember2022-07-012022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:OtherIncomeMember2022-07-012022-09-300000091576us-gaap:ForeignExchangeContractMember2022-07-012022-09-300000091576us-gaap:ForeignExchangeContractMemberkey:CorporateServicesMember2021-07-012021-09-300000091576us-gaap:ForeignExchangeContractMemberkey:ConsumerMortgageIncomeMember2021-07-012021-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:OtherIncomeMember2021-07-012021-09-300000091576us-gaap:ForeignExchangeContractMember2021-07-012021-09-300000091576key:CorporateServicesMemberus-gaap:CommodityContractMember2022-07-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CommodityContractMember2022-07-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CommodityContractMember2022-07-012022-09-300000091576us-gaap:CommodityContractMember2022-07-012022-09-300000091576key:CorporateServicesMemberus-gaap:CommodityContractMember2021-07-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CommodityContractMember2021-07-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CommodityContractMember2021-07-012021-09-300000091576us-gaap:CommodityContractMember2021-07-012021-09-300000091576us-gaap:CreditRiskContractMemberkey:CorporateServicesMember2022-07-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CreditRiskContractMember2022-07-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CreditRiskContractMember2022-07-012022-09-300000091576us-gaap:CreditRiskContractMemberkey:CorporateServicesMember2021-07-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CreditRiskContractMember2021-07-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CreditRiskContractMember2021-07-012021-09-300000091576key:CorporateServicesMemberus-gaap:OtherCreditDerivativesMember2022-07-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:OtherCreditDerivativesMember2022-07-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:OtherCreditDerivativesMember2022-07-012022-09-300000091576key:CorporateServicesMemberus-gaap:OtherCreditDerivativesMember2021-07-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:OtherCreditDerivativesMember2021-07-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:OtherCreditDerivativesMember2021-07-012021-09-300000091576key:CorporateServicesMember2022-07-012022-09-300000091576key:ConsumerMortgageIncomeMember2022-07-012022-09-300000091576us-gaap:OtherIncomeMember2022-07-012022-09-300000091576key:CorporateServicesMember2021-07-012021-09-300000091576key:ConsumerMortgageIncomeMember2021-07-012021-09-300000091576us-gaap:OtherIncomeMember2021-07-012021-09-300000091576key:CorporateServicesMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:InterestRateContractMember2022-01-012022-09-300000091576key:CorporateServicesMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:InterestRateContractMember2021-01-012021-09-300000091576us-gaap:ForeignExchangeContractMemberkey:CorporateServicesMember2022-01-012022-09-300000091576us-gaap:ForeignExchangeContractMemberkey:ConsumerMortgageIncomeMember2022-01-012022-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:OtherIncomeMember2022-01-012022-09-300000091576us-gaap:ForeignExchangeContractMember2022-01-012022-09-300000091576us-gaap:ForeignExchangeContractMemberkey:CorporateServicesMember2021-01-012021-09-300000091576us-gaap:ForeignExchangeContractMemberkey:ConsumerMortgageIncomeMember2021-01-012021-09-300000091576us-gaap:ForeignExchangeContractMemberus-gaap:OtherIncomeMember2021-01-012021-09-300000091576us-gaap:ForeignExchangeContractMember2021-01-012021-09-300000091576key:CorporateServicesMemberus-gaap:CommodityContractMember2022-01-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CommodityContractMember2022-01-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CommodityContractMember2022-01-012022-09-300000091576us-gaap:CommodityContractMember2022-01-012022-09-300000091576key:CorporateServicesMemberus-gaap:CommodityContractMember2021-01-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CommodityContractMember2021-01-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CommodityContractMember2021-01-012021-09-300000091576us-gaap:CommodityContractMember2021-01-012021-09-300000091576us-gaap:CreditRiskContractMemberkey:CorporateServicesMember2022-01-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CreditRiskContractMember2022-01-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CreditRiskContractMember2022-01-012022-09-300000091576us-gaap:CreditRiskContractMemberkey:CorporateServicesMember2021-01-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:CreditRiskContractMember2021-01-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:CreditRiskContractMember2021-01-012021-09-300000091576key:CorporateServicesMemberus-gaap:OtherCreditDerivativesMember2022-01-012022-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:OtherCreditDerivativesMember2022-01-012022-09-300000091576us-gaap:OtherIncomeMemberus-gaap:OtherCreditDerivativesMember2022-01-012022-09-300000091576key:CorporateServicesMemberus-gaap:OtherCreditDerivativesMember2021-01-012021-09-300000091576key:ConsumerMortgageIncomeMemberus-gaap:OtherCreditDerivativesMember2021-01-012021-09-300000091576us-gaap:OtherIncomeMemberus-gaap:OtherCreditDerivativesMember2021-01-012021-09-300000091576key:CorporateServicesMember2022-01-012022-09-300000091576key:ConsumerMortgageIncomeMember2022-01-012022-09-300000091576us-gaap:OtherIncomeMember2022-01-012022-09-300000091576key:CorporateServicesMember2021-01-012021-09-300000091576key:ConsumerMortgageIncomeMember2021-01-012021-09-300000091576us-gaap:OtherIncomeMember2021-01-012021-09-300000091576us-gaap:ForeignExchangeContractMember2022-09-300000091576us-gaap:ForeignExchangeContractMember2021-12-310000091576us-gaap:CommodityContractMember2022-09-300000091576us-gaap:CommodityContractMember2021-12-310000091576us-gaap:OtherCreditDerivativesMember2022-09-300000091576us-gaap:OtherCreditDerivativesMember2022-01-012022-09-300000091576us-gaap:OtherCreditDerivativesMember2021-12-310000091576us-gaap:OtherCreditDerivativesMember2021-01-012021-12-310000091576us-gaap:OtherCreditDerivativesMembersrt:MaximumMember2022-09-300000091576key:BankingSubsidiaryMember2022-09-30key:derivative0000091576key:OneRatingDowngradeMembersrt:MoodysA3RatingMember2022-09-300000091576srt:StandardPoorsAMinusRatingMemberkey:OneRatingDowngradeMember2022-09-300000091576key:OneRatingDowngradeMembersrt:MoodysA3RatingMember2021-12-310000091576srt:StandardPoorsAMinusRatingMemberkey:OneRatingDowngradeMember2021-12-310000091576key:TwoRatingDowngradeMembersrt:MoodysA3RatingMember2022-09-300000091576key:TwoRatingDowngradeMembersrt:StandardPoorsAMinusRatingMember2022-09-300000091576key:TwoRatingDowngradeMembersrt:MoodysA3RatingMember2021-12-310000091576key:TwoRatingDowngradeMembersrt:StandardPoorsAMinusRatingMember2021-12-310000091576srt:MoodysA3RatingMemberkey:ThreeRatingDowngradeMember2022-09-300000091576srt:StandardPoorsAMinusRatingMemberkey:ThreeRatingDowngradeMember2022-09-300000091576srt:MoodysA3RatingMemberkey:ThreeRatingDowngradeMember2021-12-310000091576srt:StandardPoorsAMinusRatingMemberkey:ThreeRatingDowngradeMember2021-12-310000091576us-gaap:UnsecuredDebtMemberkey:BankingSubsidiaryMember2021-12-31key:rating0000091576us-gaap:UnsecuredDebtMemberkey:BankingSubsidiaryMember2022-09-300000091576us-gaap:UnsecuredDebtMembersrt:MaximumMemberkey:BankingSubsidiaryMember2022-09-300000091576us-gaap:UnsecuredDebtMembersrt:MaximumMemberkey:BankingSubsidiaryMember2021-12-310000091576us-gaap:CommercialMortgageBackedSecuritiesMember2022-06-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2021-06-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000091576us-gaap:CommercialMortgageBackedSecuritiesMember2022-07-012022-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2021-07-012021-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2021-09-300000091576srt:MinimumMemberkey:DiscountedCashFlowMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576key:DiscountedCashFlowMembersrt:MaximumMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576key:DiscountedCashFlowMembersrt:WeightedAverageMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576srt:MinimumMemberkey:DiscountedCashFlowMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576key:DiscountedCashFlowMembersrt:MaximumMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576key:DiscountedCashFlowMembersrt:WeightedAverageMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576us-gaap:CommercialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2022-06-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2021-06-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2020-12-310000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2022-07-012022-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2021-07-012021-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2021-09-300000091576srt:MinimumMemberkey:DiscountedCashFlowMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576key:DiscountedCashFlowMembersrt:MaximumMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576key:DiscountedCashFlowMembersrt:WeightedAverageMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576srt:MinimumMemberkey:DiscountedCashFlowMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576key:DiscountedCashFlowMembersrt:MaximumMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576key:DiscountedCashFlowMembersrt:WeightedAverageMemberus-gaap:ResidentialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2022-01-012022-09-300000091576us-gaap:ResidentialMortgageBackedSecuritiesMember2021-01-012021-09-300000091576key:ConsumerBankMember2021-09-300000091576key:CommercialBankMember2021-09-300000091576key:ConsumerBankMember2021-10-012021-12-310000091576key:CommercialBankMember2021-10-012021-12-3100000915762021-10-012021-12-310000091576key:ConsumerBankMember2021-12-310000091576key:CommercialBankMember2021-12-310000091576key:ConsumerBankMember2022-01-012022-09-300000091576key:CommercialBankMember2022-01-012022-09-300000091576key:ConsumerBankMember2022-09-300000091576key:CommercialBankMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:AccruedIncomeAndOtherAssetsMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:AccruedIncomeAndOtherAssetsMember2021-12-310000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:QualifiedAffordableHousingProjectsInvestmentMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:QualifiedAffordableHousingProjectsInvestmentMember2021-12-310000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:VariableInterestSponsorsMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:VariableInterestSponsorsMember2021-12-310000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberus-gaap:InvestmentsMember2022-01-012022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberus-gaap:InvestmentsMember2021-01-012021-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2021-01-012021-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:PrincipalIndirectInvestmentsMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:PrincipalIndirectInvestmentsMember2021-12-310000091576us-gaap:InvestmentsMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2021-12-310000091576us-gaap:InvestmentsMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberkey:OtherUnconsolidatedVariableInterestEntitiesMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2022-09-300000091576us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2021-12-310000091576key:AccruedIncomeAndOtherAssetsMember2022-09-300000091576key:AccruedIncomeAndOtherAssetsMember2021-12-310000091576key:KeyCorpMember2022-09-300000091576key:FirstNiagaraBankN.A.Member2022-09-300000091576key:XUPMember2021-11-192021-11-190000091576key:GradFinMember2022-05-022022-05-020000091576key:GradFinMember2022-05-020000091576key:GovernmentGuaranteedLoansMemberus-gaap:SegmentDiscontinuedOperationsMember2022-09-300000091576key:GovernmentGuaranteedLoansMemberus-gaap:SegmentDiscontinuedOperationsMember2021-12-310000091576key:GrossAmountsPresentedInBalanceSheetsMember2022-09-300000091576key:NettingAdjustmentsMember2022-09-300000091576key:CounterpartyAndCashCollateralNettingMember2022-09-300000091576key:GrossAmountsPresentedInBalanceSheetsMember2021-12-310000091576key:NettingAdjustmentsMember2021-12-310000091576key:CounterpartyAndCashCollateralNettingMember2021-12-310000091576us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2022-09-300000091576us-gaap:PensionPlansDefinedBenefitMember2022-07-012022-09-300000091576us-gaap:PensionPlansDefinedBenefitMember2021-07-012021-09-300000091576us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-09-300000091576us-gaap:PensionPlansDefinedBenefitMember2021-01-012021-09-300000091576key:KeyCorpCapitalOneMember2022-09-300000091576key:KeyCorpCapitalTwoMember2022-09-300000091576key:KeyCorpCapitalThreeMember2022-09-300000091576key:HNCStatutoryTrustIIIMember2022-09-300000091576key:WillowGroveStatutoryTrustIMember2022-09-300000091576key:HNCStatutoryTrustIVMember2022-09-300000091576key:WestbankCapitalTrustIIMember2022-09-300000091576key:WestbankCapitalTrustIIIMember2022-09-300000091576key:BusinessTrustsMember2022-09-300000091576key:BusinessTrustsMember2021-12-310000091576key:TreasuryRateMemberkey:KeyCorpCapitalTwoMember2022-01-012022-09-300000091576key:KeyCorpCapitalThreeMemberkey:TreasuryRateMember2022-01-012022-09-300000091576key:KeycorpCapitalIIandIIIMemberus-gaap:DebtInstrumentRedemptionPeriodFiveMemberkey:TreasuryRateMember2022-01-012022-09-300000091576us-gaap:LondonInterbankOfferedRateLIBORMemberkey:KeyCorpCapitalOneMember2022-01-012022-09-300000091576us-gaap:LondonInterbankOfferedRateLIBORMemberkey:HNCStatutoryTrustIIIMember2022-01-012022-09-300000091576key:WillowGroveStatutoryTrustIMemberus-gaap:LondonInterbankOfferedRateLIBORMember2022-01-012022-09-300000091576key:HNCStatutoryTrustIVMemberus-gaap:LondonInterbankOfferedRateLIBORMember2022-01-012022-09-300000091576us-gaap:LondonInterbankOfferedRateLIBORMemberkey:WestbankCapitalTrustIIandIIIMember2022-01-012022-09-300000091576us-gaap:FinancialStandbyLetterOfCreditMember2022-09-300000091576key:UnderwritingAndServicingProgramMember2022-09-300000091576key:ResidentialMortgageReserveMember2022-09-300000091576us-gaap:PutOptionMember2022-09-300000091576srt:MinimumMemberus-gaap:RiskLevelLowMember2022-01-012022-09-300000091576us-gaap:RiskLevelLowMembersrt:MaximumMember2022-01-012022-09-300000091576srt:MinimumMemberus-gaap:RiskLevelMediumMember2022-01-012022-09-300000091576srt:MaximumMemberus-gaap:RiskLevelMediumMember2022-01-012022-09-300000091576srt:MinimumMemberus-gaap:RiskLevelHighMember2022-01-012022-09-300000091576us-gaap:FinancialStandbyLetterOfCreditMember2022-01-012022-09-300000091576srt:MinimumMemberus-gaap:FinancialStandbyLetterOfCreditMember2022-01-012022-09-300000091576us-gaap:FinancialStandbyLetterOfCreditMembersrt:MaximumMember2022-01-012022-09-300000091576key:UnderwritingAndServicingProgramMember2022-01-012022-09-300000091576us-gaap:PutOptionMember2022-01-012022-09-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-12-310000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-12-310000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-01-012022-09-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-01-012022-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-01-012022-09-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-09-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-09-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-06-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-06-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-06-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-07-012022-09-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-07-012022-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-07-012022-09-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2020-12-310000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2020-12-310000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-12-310000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-01-012021-09-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-01-012021-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-01-012021-09-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-09-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-09-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-06-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-06-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-06-300000091576us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-07-012021-09-300000091576us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-07-012021-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-07-012021-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:InterestIncomeMember2022-07-012022-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:InterestIncomeMember2021-07-012021-09-300000091576us-gaap:InterestExpenseMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-07-012022-09-300000091576us-gaap:InterestExpenseMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-07-012021-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-07-012022-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-07-012021-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentNetActuarialGainLossAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-07-012022-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentNetActuarialGainLossAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-07-012021-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentSettlementLossesAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-07-012022-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentSettlementLossesAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-07-012021-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-07-012022-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-07-012021-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:InterestIncomeMember2022-01-012022-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:InterestIncomeMember2021-01-012021-09-300000091576us-gaap:InterestExpenseMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-01-012022-09-300000091576us-gaap:InterestExpenseMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-01-012021-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-01-012022-09-300000091576us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-01-012021-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentNetActuarialGainLossAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentNetActuarialGainLossAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentSettlementLossesAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-09-300000091576key:AccumulatedDefinedBenefitPlansAdjustmentSettlementLossesAttributableToParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-09-300000091576us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-09-300000091576key:EmployeeEquityCompensationProgramsMember2021-07-310000091576key:A2021CapitalPlanMember2022-07-012022-09-300000091576us-gaap:SeriesDPreferredStockMember2022-09-300000091576key:DepositorySharesSeriesDMember2022-09-300000091576us-gaap:SeriesEPreferredStockMember2022-09-300000091576key:DepositorySharesSeriesEMember2022-09-300000091576us-gaap:SeriesFPreferredStockMember2022-09-300000091576key:DepositorySharesSeriesFMember2022-09-300000091576us-gaap:SeriesGPreferredStockMember2022-09-300000091576key:DepositorySharesSeriesGMember2022-09-300000091576us-gaap:SeriesHPreferredStockMember2022-09-300000091576key:DepositorySharesSeriesHMember2022-09-300000091576key:ConsumerBankMember2022-09-30key:branch0000091576key:CommercialBankMember2022-09-300000091576us-gaap:OperatingSegmentsMemberkey:ConsumerBankMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:ConsumerBankMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommercialBankMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommercialBankMember2021-07-012021-09-300000091576key:CorporateAndReconcilingItemsMember2022-07-012022-09-300000091576key:CorporateAndReconcilingItemsMember2021-07-012021-09-30key:employee0000091576us-gaap:OperatingSegmentsMemberkey:ConsumerBankMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:ConsumerBankMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommercialBankMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommercialBankMember2021-01-012021-09-300000091576key:CorporateAndReconcilingItemsMember2022-01-012022-09-300000091576key:CorporateAndReconcilingItemsMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CommunityBankingMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CorporateBankingMember2022-07-012022-09-300000091576key:TrustAndInvestmentServicesMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CommunityBankingMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CorporateBankingMember2021-07-012021-09-300000091576key:TrustAndInvestmentServicesMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:InvestmentBankingAndDebtPlacementMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:InvestmentBankingAndDebtPlacementMemberkey:CorporateBankingMember2022-07-012022-09-300000091576key:InvestmentBankingAndDebtPlacementMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:InvestmentBankingAndDebtPlacementMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:InvestmentBankingAndDebtPlacementMemberkey:CorporateBankingMember2021-07-012021-09-300000091576key:InvestmentBankingAndDebtPlacementMember2021-07-012021-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2022-07-012022-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2022-07-012022-09-300000091576key:ServiceChargesOnDepositAccountsMember2022-07-012022-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2021-07-012021-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2021-07-012021-09-300000091576key:ServiceChargesOnDepositAccountsMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:CardsAndPaymentsMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMemberkey:CardsAndPaymentsMember2022-07-012022-09-300000091576key:CardsAndPaymentsMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:CardsAndPaymentsMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMemberkey:CardsAndPaymentsMember2021-07-012021-09-300000091576key:CardsAndPaymentsMember2021-07-012021-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2022-07-012022-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2022-07-012022-09-300000091576key:OtherNoninterestIncomeMember2022-07-012022-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2021-07-012021-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2021-07-012021-09-300000091576key:OtherNoninterestIncomeMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2022-07-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2021-07-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CommunityBankingMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CorporateBankingMember2022-01-012022-09-300000091576key:TrustAndInvestmentServicesMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CommunityBankingMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:TrustAndInvestmentServicesMemberkey:CorporateBankingMember2021-01-012021-09-300000091576key:TrustAndInvestmentServicesMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:InvestmentBankingAndDebtPlacementMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:InvestmentBankingAndDebtPlacementMemberkey:CorporateBankingMember2022-01-012022-09-300000091576key:InvestmentBankingAndDebtPlacementMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:InvestmentBankingAndDebtPlacementMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:InvestmentBankingAndDebtPlacementMemberkey:CorporateBankingMember2021-01-012021-09-300000091576key:InvestmentBankingAndDebtPlacementMember2021-01-012021-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2022-01-012022-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2022-01-012022-09-300000091576key:ServiceChargesOnDepositAccountsMember2022-01-012022-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2021-01-012021-09-300000091576key:ServiceChargesOnDepositAccountsMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2021-01-012021-09-300000091576key:ServiceChargesOnDepositAccountsMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:CardsAndPaymentsMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMemberkey:CardsAndPaymentsMember2022-01-012022-09-300000091576key:CardsAndPaymentsMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMemberkey:CardsAndPaymentsMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMemberkey:CardsAndPaymentsMember2021-01-012021-09-300000091576key:CardsAndPaymentsMember2021-01-012021-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2022-01-012022-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2022-01-012022-09-300000091576key:OtherNoninterestIncomeMember2022-01-012022-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2021-01-012021-09-300000091576key:OtherNoninterestIncomeMemberus-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2021-01-012021-09-300000091576key:OtherNoninterestIncomeMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2022-01-012022-09-300000091576us-gaap:OperatingSegmentsMemberkey:CommunityBankingMember2021-01-012021-09-300000091576us-gaap:OperatingSegmentsMemberkey:CorporateBankingMember2021-01-012021-09-30