FALSE0000801337FY2020us-gaap:AccountingStandardsUpdate201602Memberus-gaap:AccountingStandardsUpdate201613Memberus-gaap:PropertyPlantAndEquipmentNet.00100008013372020-01-012020-12-310000801337us-gaap:CommonClassAMemberexch:XNYS2020-01-012020-12-310000801337us-gaap:SeriesFPreferredStockMemberexch:XNYS2020-01-012020-12-31iso4217:USD00008013372020-06-30xbrli:shares00008013372021-02-19wbs:banking_centerwbs:Segment00008013372020-12-3100008013372019-12-31iso4217:USDxbrli:shares0000801337us-gaap:SeriesFPreferredStockMember2020-12-310000801337us-gaap:SeriesFPreferredStockMember2019-12-3100008013372019-01-012019-12-3100008013372018-01-012018-12-310000801337us-gaap:PreferredStockMember2017-12-310000801337us-gaap:CommonStockMember2017-12-310000801337us-gaap:AdditionalPaidInCapitalMember2017-12-310000801337us-gaap:RetainedEarningsMember2017-12-310000801337us-gaap:TreasuryStockMember2017-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2017-12-3100008013372017-12-310000801337us-gaap:RetainedEarningsMemberwbs:AccountignStandardsUpdate201708And201601Membersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2017-12-310000801337wbs:AccountignStandardsUpdate201708And201601Membersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2017-12-310000801337us-gaap:RetainedEarningsMember2018-01-012018-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2018-01-012018-12-310000801337us-gaap:CommonStockMember2018-01-012018-12-310000801337us-gaap:AdditionalPaidInCapitalMember2018-01-012018-12-310000801337us-gaap:SeriesEPreferredStockMember2018-01-012018-12-310000801337us-gaap:RetainedEarningsMemberus-gaap:SeriesEPreferredStockMember2018-01-012018-12-310000801337us-gaap:SeriesFPreferredStockMemberus-gaap:RetainedEarningsMember2018-01-012018-12-310000801337us-gaap:SeriesFPreferredStockMember2018-01-012018-12-310000801337us-gaap:TreasuryStockMember2018-01-012018-12-310000801337us-gaap:PreferredStockMember2018-01-012018-12-310000801337us-gaap:PreferredStockMember2018-12-310000801337us-gaap:CommonStockMember2018-12-310000801337us-gaap:AdditionalPaidInCapitalMember2018-12-310000801337us-gaap:RetainedEarningsMember2018-12-310000801337us-gaap:TreasuryStockMember2018-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2018-12-3100008013372018-12-310000801337us-gaap:RetainedEarningsMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2018-12-310000801337srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2018-12-310000801337us-gaap:RetainedEarningsMember2019-01-012019-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-01-012019-12-310000801337us-gaap:CommonStockMember2019-01-012019-12-310000801337us-gaap:SeriesFPreferredStockMember2019-01-012019-12-310000801337us-gaap:SeriesFPreferredStockMemberus-gaap:RetainedEarningsMember2019-01-012019-12-310000801337us-gaap:AdditionalPaidInCapitalMember2019-01-012019-12-310000801337us-gaap:TreasuryStockMember2019-01-012019-12-310000801337us-gaap:PreferredStockMember2019-12-310000801337us-gaap:CommonStockMember2019-12-310000801337us-gaap:AdditionalPaidInCapitalMember2019-12-310000801337us-gaap:RetainedEarningsMember2019-12-310000801337us-gaap:TreasuryStockMember2019-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-12-310000801337us-gaap:RetainedEarningsMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2019-12-310000801337srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2019-12-310000801337us-gaap:RetainedEarningsMember2020-01-012020-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310000801337us-gaap:CommonStockMember2020-01-012020-12-310000801337us-gaap:SeriesFPreferredStockMember2020-01-012020-12-310000801337us-gaap:SeriesFPreferredStockMemberus-gaap:RetainedEarningsMember2020-01-012020-12-310000801337us-gaap:AdditionalPaidInCapitalMember2020-01-012020-12-310000801337us-gaap:TreasuryStockMember2020-01-012020-12-310000801337us-gaap:PreferredStockMember2020-12-310000801337us-gaap:CommonStockMember2020-12-310000801337us-gaap:AdditionalPaidInCapitalMember2020-12-310000801337us-gaap:RetainedEarningsMember2020-12-310000801337us-gaap:TreasuryStockMember2020-12-310000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-3100008013372019-01-010000801337us-gaap:BuildingAndBuildingImprovementsMembersrt:MinimumMember2020-01-012020-12-310000801337srt:MaximumMemberus-gaap:BuildingAndBuildingImprovementsMember2020-01-012020-12-310000801337us-gaap:LeaseholdImprovementsMembersrt:MinimumMember2020-01-012020-12-310000801337srt:MaximumMemberus-gaap:LeaseholdImprovementsMember2020-01-012020-12-310000801337us-gaap:FurnitureAndFixturesMembersrt:MinimumMember2020-01-012020-12-310000801337srt:MaximumMemberus-gaap:FurnitureAndFixturesMember2020-01-012020-12-310000801337us-gaap:InformationTechnologyAndDataProcessingsrt:MinimumMember2020-01-012020-12-310000801337srt:MaximumMemberus-gaap:InformationTechnologyAndDataProcessing2020-01-012020-12-31xbrli:pure0000801337us-gaap:PerformanceSharesMembersrt:MinimumMember2020-01-012020-12-310000801337srt:MaximumMemberus-gaap:PerformanceSharesMember2020-01-012020-12-310000801337us-gaap:AccountingStandardsUpdate201613Member2020-12-310000801337us-gaap:AccountingStandardsUpdate201613Member2020-01-010000801337us-gaap:OtherAssetsMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2020-12-310000801337us-gaap:OtherAssetsMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2019-12-310000801337us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2020-12-310000801337us-gaap:VariableInterestEntityNotPrimaryBeneficiaryMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2019-12-310000801337us-gaap:OtherInvestmentsMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2020-12-310000801337us-gaap:OtherInvestmentsMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2019-12-310000801337us-gaap:UnfundedLoanCommitmentMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2020-12-310000801337us-gaap:UnfundedLoanCommitmentMemberus-gaap:VariableInterestEntityNotPrimaryBeneficiaryMember2019-12-310000801337us-gaap:EmployeeSeveranceMember2019-12-310000801337us-gaap:ContractTerminationMember2019-12-310000801337us-gaap:OtherRestructuringMember2019-12-310000801337us-gaap:EmployeeSeveranceMember2020-01-012020-12-310000801337us-gaap:ContractTerminationMember2020-01-012020-12-310000801337us-gaap:OtherRestructuringMember2020-01-012020-12-310000801337us-gaap:EmployeeSeveranceMember2020-12-310000801337us-gaap:ContractTerminationMember2020-12-310000801337us-gaap:OtherRestructuringMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMember2020-12-310000801337us-gaap:MunicipalBondsMember2020-12-310000801337us-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMember2019-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2019-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMember2019-12-310000801337us-gaap:MunicipalBondsMember2019-12-310000801337us-gaap:CommercialMortgageBackedSecuritiesMember2019-12-310000801337us-gaap:HeldtomaturitySecuritiesMember2020-12-310000801337us-gaap:HeldtomaturitySecuritiesMember2019-12-310000801337srt:MoodysAaaRatingMemberus-gaap:CollateralizedMortgageObligationsMember2020-12-310000801337srt:MoodysAa1RatingMemberus-gaap:CollateralizedMortgageObligationsMember2020-12-310000801337srt:MoodysAa2RatingMemberus-gaap:CollateralizedMortgageObligationsMember2020-12-310000801337srt:MoodysAa3RatingMemberus-gaap:CollateralizedMortgageObligationsMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMembersrt:MoodysA1RatingMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMembersrt:MoodysA2RatingMember2020-12-310000801337srt:MoodysA3RatingMemberus-gaap:CollateralizedMortgageObligationsMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMembersrt:MoodysBaa2RatingMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMemberwbs:MoodysNotRatedMember2020-12-310000801337srt:MoodysAaaRatingMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2020-12-310000801337srt:MoodysAa1RatingMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2020-12-310000801337srt:MoodysAa2RatingMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2020-12-310000801337srt:MoodysAa3RatingMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMembersrt:MoodysA1RatingMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMembersrt:MoodysA2RatingMember2020-12-310000801337srt:MoodysA3RatingMemberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMembersrt:MoodysBaa2RatingMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberwbs:MoodysNotRatedMember2020-12-310000801337srt:MoodysAaaRatingMemberwbs:AgencyCommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAa1RatingMemberwbs:AgencyCommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAa2RatingMemberwbs:AgencyCommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAa3RatingMemberwbs:AgencyCommercialMortgageBackedSecuritiesMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMembersrt:MoodysA1RatingMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMembersrt:MoodysA2RatingMember2020-12-310000801337srt:MoodysA3RatingMemberwbs:AgencyCommercialMortgageBackedSecuritiesMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMembersrt:MoodysBaa2RatingMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMemberwbs:MoodysNotRatedMember2020-12-310000801337srt:MoodysAaaRatingMemberus-gaap:MunicipalBondsMember2020-12-310000801337srt:MoodysAa1RatingMemberus-gaap:MunicipalBondsMember2020-12-310000801337srt:MoodysAa2RatingMemberus-gaap:MunicipalBondsMember2020-12-310000801337srt:MoodysAa3RatingMemberus-gaap:MunicipalBondsMember2020-12-310000801337us-gaap:MunicipalBondsMembersrt:MoodysA1RatingMember2020-12-310000801337us-gaap:MunicipalBondsMembersrt:MoodysA2RatingMember2020-12-310000801337srt:MoodysA3RatingMemberus-gaap:MunicipalBondsMember2020-12-310000801337us-gaap:MunicipalBondsMembersrt:MoodysBaa2RatingMember2020-12-310000801337us-gaap:MunicipalBondsMemberwbs:MoodysNotRatedMember2020-12-310000801337srt:MoodysAaaRatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAa1RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAa2RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAa3RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysA1RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysA2RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysA3RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysBaa2RatingMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337wbs:MoodysNotRatedMemberus-gaap:CommercialMortgageBackedSecuritiesMember2020-12-310000801337srt:MoodysAaaRatingMember2020-12-310000801337srt:MoodysAa1RatingMember2020-12-310000801337srt:MoodysAa2RatingMember2020-12-310000801337srt:MoodysAa3RatingMember2020-12-310000801337srt:MoodysA1RatingMember2020-12-310000801337srt:MoodysA2RatingMember2020-12-310000801337srt:MoodysA3RatingMember2020-12-310000801337srt:MoodysBaa2RatingMember2020-12-310000801337wbs:MoodysNotRatedMember2020-12-310000801337us-gaap:CollateralizedLoanObligationsMember2020-12-310000801337us-gaap:CorporateDebtSecuritiesMember2020-12-310000801337us-gaap:CollateralizedLoanObligationsMember2019-12-310000801337us-gaap:CorporateDebtSecuritiesMember2019-12-310000801337us-gaap:AvailableforsaleSecuritiesMember2020-12-310000801337us-gaap:AvailableforsaleSecuritiesMember2019-12-31wbs:numberOfHoldings0000801337wbs:CallableMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMember2019-12-310000801337us-gaap:ResidentialRealEstateMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ResidentialRealEstateMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337naics:ZZ522291us-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337naics:ZZ522291us-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337wbs:LeasingReceivableMember2020-12-310000801337wbs:LeasingReceivableMember2019-12-310000801337us-gaap:FinanceLeasesPortfolioSegmentMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMember2020-01-012020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMember2019-01-012019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberwbs:AssetBasedLendingMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialRealEstateMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z6172us-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z6172us-gaap:FinancingReceivables60To89DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z6172us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z61722020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerBorrowerMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerBorrowerMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:ConsumerBorrowerMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerBorrowerMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2020-12-310000801337us-gaap:FinancingReceivables30To59DaysPastDueMember2020-12-310000801337us-gaap:FinancingReceivables60To89DaysPastDueMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberwbs:AssetBasedLendingMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialRealEstateMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z6172us-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z6172us-gaap:FinancingReceivables60To89DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z6172us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMembersic:Z61722019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivables60To89DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerBorrowerMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerBorrowerMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMemberus-gaap:ConsumerBorrowerMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerBorrowerMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2019-12-310000801337us-gaap:FinancingReceivables30To59DaysPastDueMember2019-12-310000801337us-gaap:FinancingReceivables60To89DaysPastDueMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMember2018-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2018-12-310000801337us-gaap:CommercialPortfolioSegmentMember2017-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2017-12-310000801337us-gaap:CommercialPortfolioSegmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2018-12-310000801337us-gaap:ConsumerPortfolioSegmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2018-12-310000801337us-gaap:CommercialPortfolioSegmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2017-12-310000801337us-gaap:ConsumerPortfolioSegmentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2017-12-310000801337srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2017-12-310000801337us-gaap:CommercialPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:CommercialPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:CommercialPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:ConsumerPortfolioSegmentMember2018-01-012018-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:PassMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:SpecialMentionMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:SubstandardMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:DoubtfulMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:PassMemberwbs:AssetBasedLendingMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMemberus-gaap:SpecialMentionMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:SubstandardMemberwbs:AssetBasedLendingMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:PassMemberus-gaap:CommercialRealEstateMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMemberus-gaap:SpecialMentionMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:SubstandardMemberus-gaap:CommercialRealEstateMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMemberus-gaap:PassMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMemberus-gaap:SpecialMentionMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:SubstandardMemberwbs:EquipmentLoanMember2020-12-310000801337us-gaap:ResidentialMortgageMemberwbs:A800Memberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMemberwbs:A740799Member2020-12-310000801337us-gaap:ResidentialMortgageMemberwbs:A670To739Memberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMemberwbs:A580669Member2020-12-310000801337us-gaap:ResidentialMortgageMemberwbs:A579AndBelowMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberwbs:A800Memberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMemberwbs:A740799Member2020-12-310000801337us-gaap:HomeEquityLoanMemberwbs:A670To739Memberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMemberwbs:A580669Member2020-12-310000801337us-gaap:HomeEquityLoanMemberwbs:A579AndBelowMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337wbs:A800Memberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberwbs:A740799Memberus-gaap:ConsumerLoanMember2020-12-310000801337wbs:A670To739Memberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberwbs:A580669Memberus-gaap:ConsumerLoanMember2020-12-310000801337wbs:A579AndBelowMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-12-310000801337wbs:CommercialNonRealEstatePortfolioSegmentMemberus-gaap:PassMember2019-12-310000801337us-gaap:PassMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000801337us-gaap:PassMemberus-gaap:FinanceLeasesPortfolioSegmentMember2019-12-310000801337wbs:CommercialNonRealEstatePortfolioSegmentMemberus-gaap:SpecialMentionMember2019-12-310000801337us-gaap:SpecialMentionMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000801337us-gaap:SpecialMentionMemberus-gaap:FinanceLeasesPortfolioSegmentMember2019-12-310000801337wbs:CommercialNonRealEstatePortfolioSegmentMemberus-gaap:SubstandardMember2019-12-310000801337us-gaap:SubstandardMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000801337us-gaap:SubstandardMemberus-gaap:FinanceLeasesPortfolioSegmentMember2019-12-310000801337wbs:CommercialNonRealEstatePortfolioSegmentMemberus-gaap:DoubtfulMember2019-12-310000801337us-gaap:DoubtfulMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000801337us-gaap:DoubtfulMemberus-gaap:FinanceLeasesPortfolioSegmentMember2019-12-310000801337wbs:CommercialNonRealEstatePortfolioSegmentMember2019-12-310000801337us-gaap:CommercialRealEstatePortfolioSegmentMember2019-12-310000801337us-gaap:FinanceLeasesPortfolioSegmentMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:CommercialPortfolioSegmentMember2019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2020-01-012020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2019-01-012019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMember2020-01-012020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMember2019-01-012019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:AssetBasedLendingMember2018-01-012018-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMember2020-01-012020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMember2019-01-012019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstateMember2018-01-012018-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMember2018-01-012018-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:ConsumerPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-01-012020-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2019-01-012019-12-310000801337us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2018-01-012018-12-310000801337wbs:CollateralValueMember2020-12-310000801337wbs:CollateralValueMember2019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:CollateralPledgedMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:UncollateralizedMember2020-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:CollateralPledgedMember2019-12-310000801337wbs:NonRealEstateReceivablesMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:UncollateralizedMember2019-12-310000801337wbs:AssetBasedLoansMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:CollateralPledgedMember2020-12-310000801337wbs:AssetBasedLoansMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:UncollateralizedMember2020-12-310000801337wbs:AssetBasedLoansMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310000801337wbs:AssetBasedLoansMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:CollateralPledgedMember2019-12-310000801337wbs:AssetBasedLoansMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:UncollateralizedMember2019-12-310000801337wbs:AssetBasedLoansMemberus-gaap:CommercialPortfolioSegmentMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CollateralPledgedMemberus-gaap:CommercialRealEstateMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:UncollateralizedMemberus-gaap:CommercialRealEstateMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:CollateralPledgedMemberus-gaap:CommercialRealEstateMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberus-gaap:UncollateralizedMemberus-gaap:CommercialRealEstateMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMemberus-gaap:CollateralPledgedMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMemberus-gaap:UncollateralizedMember2020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMemberus-gaap:CollateralPledgedMember2019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:EquipmentLoanMemberus-gaap:UncollateralizedMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:CollateralPledgedMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:UncollateralizedMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:CollateralPledgedMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:UncollateralizedMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:CollateralPledgedMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:UncollateralizedMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:CollateralPledgedMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:HomeEquityLoanMemberus-gaap:UncollateralizedMemberus-gaap:ConsumerPortfolioSegmentMember2019-12-310000801337us-gaap:CollateralPledgedMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-12-310000801337us-gaap:UncollateralizedMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2020-12-310000801337us-gaap:CollateralPledgedMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2019-12-310000801337us-gaap:UncollateralizedMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2019-12-310000801337us-gaap:CollateralPledgedMember2020-12-310000801337us-gaap:UncollateralizedMember2020-12-310000801337us-gaap:CollateralPledgedMember2019-12-310000801337us-gaap:UncollateralizedMember2019-12-310000801337us-gaap:PerformingFinancingReceivableMember2020-12-310000801337us-gaap:PerformingFinancingReceivableMember2019-12-310000801337us-gaap:NonperformingFinancingReceivableMember2020-12-310000801337us-gaap:NonperformingFinancingReceivableMember2019-12-310000801337us-gaap:NonperformingFinancingReceivableMemberwbs:TroubledDebtRestructuresMember2020-12-310000801337us-gaap:NonperformingFinancingReceivableMemberwbs:TroubledDebtRestructuresMember2019-12-31wbs:loan0000801337us-gaap:ExtendedMaturityMemberus-gaap:CommercialPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:ExtendedMaturityMemberus-gaap:CommercialPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:ExtendedMaturityMemberus-gaap:CommercialPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:ContractualInterestRateReductionMemberus-gaap:CommercialPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:ContractualInterestRateReductionMemberus-gaap:CommercialPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:ContractualInterestRateReductionMemberus-gaap:CommercialPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:CombinationOfRateAndMaturityMember2020-01-012020-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:CombinationOfRateAndMaturityMember2019-01-012019-12-310000801337us-gaap:CommercialPortfolioSegmentMemberwbs:CombinationOfRateAndMaturityMember2018-01-012018-12-310000801337wbs:OtherConcessionsMemberus-gaap:CommercialPortfolioSegmentMember2020-01-012020-12-310000801337wbs:OtherConcessionsMemberus-gaap:CommercialPortfolioSegmentMember2019-01-012019-12-310000801337wbs:OtherConcessionsMemberus-gaap:CommercialPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:ExtendedMaturityMemberus-gaap:ConsumerPortfolioSegmentMember2020-01-012020-12-310000801337us-gaap:ExtendedMaturityMemberus-gaap:ConsumerPortfolioSegmentMember2019-01-012019-12-310000801337us-gaap:ExtendedMaturityMemberus-gaap:ConsumerPortfolioSegmentMember2018-01-012018-12-310000801337wbs:CombinationOfRateAndMaturityMemberus-gaap:ConsumerPortfolioSegmentMember2020-01-012020-12-310000801337wbs:CombinationOfRateAndMaturityMemberus-gaap:ConsumerPortfolioSegmentMember2019-01-012019-12-310000801337wbs:CombinationOfRateAndMaturityMemberus-gaap:ConsumerPortfolioSegmentMember2018-01-012018-12-310000801337wbs:OtherConcessionsMemberus-gaap:ConsumerPortfolioSegmentMember2020-01-012020-12-310000801337wbs:OtherConcessionsMemberus-gaap:ConsumerPortfolioSegmentMember2019-01-012019-12-310000801337wbs:OtherConcessionsMemberus-gaap:ConsumerPortfolioSegmentMember2018-01-012018-12-310000801337us-gaap:PassMemberwbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2020-12-310000801337us-gaap:PassMemberwbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2019-12-310000801337wbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMemberus-gaap:SpecialMentionMember2020-12-310000801337wbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMemberus-gaap:SpecialMentionMember2019-12-310000801337us-gaap:SubstandardMemberwbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2020-12-310000801337us-gaap:SubstandardMemberwbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2019-12-310000801337us-gaap:DoubtfulMemberwbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2020-12-310000801337us-gaap:DoubtfulMemberwbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2019-12-310000801337wbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2020-12-310000801337wbs:CommerialCommercialRealEstateEquipmentFinancingTDRsMember2019-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2019-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2018-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2017-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2020-01-012020-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2019-01-012019-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2018-01-012018-12-310000801337us-gaap:ReserveForOffBalanceSheetActivitiesMember2020-12-310000801337us-gaap:ResidentialMortgageMember2020-01-012020-12-310000801337us-gaap:ResidentialMortgageMember2019-01-012019-12-310000801337us-gaap:ResidentialMortgageMember2018-01-012018-12-310000801337us-gaap:ResidentialMortgageMemberwbs:ResidentialMortgageLoansServicingRetainedMember2020-01-012020-12-310000801337us-gaap:ResidentialMortgageMemberwbs:ResidentialMortgageLoansServicingRetainedMember2019-01-012019-12-310000801337us-gaap:ResidentialMortgageMemberwbs:ResidentialMortgageLoansServicingRetainedMember2018-01-012018-12-310000801337us-gaap:CommercialLoanMember2020-01-012020-12-310000801337us-gaap:CommercialLoanMember2019-01-012019-12-310000801337us-gaap:CommercialLoanMember2018-01-012018-12-310000801337us-gaap:ResidentialMortgageMember2020-12-310000801337us-gaap:ResidentialMortgageMember2018-01-012018-09-300000801337srt:MinimumMember2020-12-310000801337srt:MaximumMember2020-12-3100008013372019-09-300000801337wbs:CommunityBankingMember2020-12-310000801337wbs:HSABankMember2020-12-310000801337us-gaap:CoreDepositsMemberwbs:HSABankMember2020-12-310000801337us-gaap:CoreDepositsMemberwbs:HSABankMember2019-12-310000801337wbs:HSABankMemberus-gaap:CustomerRelationshipsMember2020-12-310000801337wbs:HSABankMemberus-gaap:CustomerRelationshipsMember2019-12-310000801337us-gaap:InvestmentCreditMember2020-12-310000801337us-gaap:ResearchMember2019-12-310000801337us-gaap:InvestmentCreditMember2019-12-310000801337us-gaap:StateAndLocalJurisdictionMember2020-12-310000801337us-gaap:StateAndLocalJurisdictionMember2019-12-310000801337us-gaap:StateAndLocalJurisdictionMember2020-12-310000801337us-gaap:GeneralBusinessMember2020-12-310000801337wbs:OriginalMaturityOfOneYearOrLessMember2020-12-310000801337wbs:OriginalMaturityOfOneYearOrLessMemberus-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2020-12-310000801337wbs:OriginalMaturityOfOneYearOrLessMember2019-12-310000801337wbs:OriginalMaturityOfOneYearOrLessMemberus-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2019-12-310000801337wbs:OriginalmaturityofgreaterthanoneyearnoncallableMember2020-12-310000801337wbs:OriginalmaturityofgreaterthanoneyearnoncallableMemberus-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2020-12-310000801337wbs:OriginalmaturityofgreaterthanoneyearnoncallableMember2019-12-310000801337wbs:OriginalmaturityofgreaterthanoneyearnoncallableMemberus-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2019-12-310000801337us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2020-12-310000801337us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2019-12-310000801337us-gaap:FederalFundsPurchasedMember2020-12-310000801337us-gaap:FederalFundsPurchasedMember2019-12-310000801337us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseMember2020-12-310000801337us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseMember2019-12-310000801337us-gaap:DebtInstrumentRedemptionPeriodOneMemberus-gaap:SeniorNotesMember2020-12-310000801337us-gaap:DebtInstrumentRedemptionPeriodOneMemberus-gaap:SeniorNotesMember2019-12-310000801337us-gaap:DebtInstrumentRedemptionPeriodTwoMemberus-gaap:SeniorNotesMember2020-12-310000801337us-gaap:DebtInstrumentRedemptionPeriodTwoMemberus-gaap:SeniorNotesMember2019-12-310000801337us-gaap:JuniorSubordinatedDebtMember2020-12-310000801337us-gaap:JuniorSubordinatedDebtMember2019-12-310000801337us-gaap:LongTermDebtMember2020-12-310000801337us-gaap:LongTermDebtMember2019-12-310000801337us-gaap:LondonInterbankOfferedRateLIBORMember2020-12-310000801337us-gaap:CommonStockMember2019-12-310000801337us-gaap:TreasuryStockMember2020-01-012020-12-310000801337us-gaap:CommonStockMember2020-12-310000801337us-gaap:PreferredStockMember2020-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2017-12-310000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2017-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2017-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-01-012018-12-310000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2018-01-012018-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2018-01-012018-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-12-310000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2018-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2018-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-01-012018-09-300000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2018-01-012018-09-300000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2018-01-012018-09-300000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2018-01-012018-09-300000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2018-09-300000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2018-09-300000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2018-09-300000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2018-09-300000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-01-012019-09-300000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2019-01-012019-09-300000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-01-012019-09-300000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-01-012019-09-300000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2019-09-300000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2019-09-300000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-09-300000801337us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-09-300000801337us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310000801337us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2019-01-012019-12-310000801337us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2018-01-012018-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2019-01-012019-12-310000801337us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2018-01-012018-12-310000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2020-01-012020-12-310000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2019-01-012019-12-310000801337us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2018-01-012018-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember2020-01-012020-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember2019-01-012019-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember2018-01-012018-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-01-012020-12-310000801337us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-01-012019-12-310000801337wbs:RiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMember2020-12-310000801337wbs:RiskBasedCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssetsMember2020-12-310000801337srt:SubsidiariesMember2020-12-310000801337srt:SubsidiariesMemberwbs:RiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMember2020-12-310000801337wbs:RiskBasedCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssetsMembersrt:SubsidiariesMember2020-12-310000801337wbs:RiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMember2019-12-310000801337wbs:RiskBasedCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssetsMember2019-12-310000801337srt:SubsidiariesMember2019-12-310000801337srt:SubsidiariesMemberwbs:RiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMember2019-12-310000801337wbs:RiskBasedCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssetsMembersrt:SubsidiariesMember2019-12-3100008013372018-01-012018-09-300000801337us-gaap:RestrictedStockMember2020-01-012020-12-310000801337us-gaap:RestrictedStockMember2019-01-012019-12-310000801337us-gaap:RestrictedStockMember2018-01-012018-12-310000801337us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-09-300000801337us-gaap:InterestRateContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-12-310000801337us-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2019-09-300000801337us-gaap:InterestRateContractMemberus-gaap:NondesignatedMember2019-12-310000801337wbs:MortgageBankingDerivativesMemberus-gaap:CreditDefaultSwapBuyingProtectionMemberus-gaap:NondesignatedMember2019-09-300000801337wbs:MortgageBankingDerivativesMemberus-gaap:CreditDefaultSwapSellingProtectionMemberus-gaap:NondesignatedMember2019-09-300000801337wbs:MortgageBankingDerivativesMemberus-gaap:CreditDefaultSwapBuyingProtectionMemberus-gaap:NondesignatedMember2019-12-310000801337wbs:MortgageBankingDerivativesMemberus-gaap:CreditDefaultSwapSellingProtectionMemberus-gaap:NondesignatedMember2019-12-310000801337us-gaap:OtherContractMemberus-gaap:NondesignatedMember2019-09-300000801337us-gaap:OtherContractMemberus-gaap:NondesignatedMember2019-12-310000801337us-gaap:NondesignatedMember2019-09-300000801337us-gaap:NondesignatedMember2019-12-310000801337us-gaap:NondesignatedMemberexch:CMES2020-12-310000801337us-gaap:NondesignatedMemberexch:CMES2019-12-310000801337us-gaap:InterestRateLockCommitmentsMember2020-12-310000801337us-gaap:CrossCurrencyInterestRateContractMember2020-12-310000801337us-gaap:CrossCurrencyInterestRateContractMember2019-12-310000801337us-gaap:DesignatedAsHedgingInstrumentMember2020-12-310000801337us-gaap:DesignatedAsHedgingInstrumentMember2019-12-310000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OperatingExpenseMemberus-gaap:LongTermDebtMember2019-01-012019-09-300000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OperatingExpenseMemberus-gaap:LongTermDebtMember2018-01-012018-09-300000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OperatingExpenseMemberus-gaap:LongTermDebtMember2018-01-012018-12-310000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OperatingExpenseMember2019-01-012019-09-300000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OperatingExpenseMember2018-01-012018-09-300000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:OperatingExpenseMember2018-01-012018-12-310000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-01-012019-09-300000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-01-012018-09-300000801337us-gaap:FairValueHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-01-012018-12-310000801337us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2019-01-012019-09-300000801337us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2018-01-012018-09-300000801337us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2018-01-012018-12-310000801337us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:OtherIncomeMemberus-gaap:NondesignatedMember2019-01-012019-09-300000801337us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:OtherIncomeMemberus-gaap:NondesignatedMember2018-01-012018-09-300000801337us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMemberus-gaap:OtherIncomeMemberus-gaap:NondesignatedMember2018-01-012018-12-310000801337us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2019-01-012019-09-300000801337us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-01-012018-09-300000801337us-gaap:CashFlowHedgingMemberus-gaap:DesignatedAsHedgingInstrumentMember2018-01-012018-12-310000801337us-gaap:LongTermDebtMember2019-09-300000801337us-gaap:LongTermDebtMember2019-12-310000801337us-gaap:LongTermDebtMember2020-03-310000801337us-gaap:InterestRateContractMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2019-01-012019-09-300000801337us-gaap:InterestRateContractMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2018-01-012018-09-300000801337us-gaap:InterestRateContractMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2018-01-012018-12-310000801337wbs:MortgageBankingDerivativesMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2019-01-012019-09-300000801337wbs:MortgageBankingDerivativesMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2018-01-012018-09-300000801337wbs:MortgageBankingDerivativesMemberus-gaap:OperatingExpenseMemberus-gaap:NondesignatedMember2018-01-012018-12-310000801337us-gaap:OperatingExpenseMemberus-gaap:OtherContractMemberus-gaap:NondesignatedMember2019-01-012019-09-300000801337us-gaap:OperatingExpenseMemberus-gaap:OtherContractMemberus-gaap:NondesignatedMember2018-01-012018-09-300000801337us-gaap:OperatingExpenseMemberus-gaap:OtherContractMemberus-gaap:NondesignatedMember2018-01-012018-12-310000801337us-gaap:NondesignatedMember2019-01-012019-09-300000801337us-gaap:PriceRiskDerivativeMember2020-12-310000801337us-gaap:CashFlowHedgingMember2020-12-310000801337us-gaap:CashFlowHedgingMember2020-01-012020-12-310000801337exch:CMES2020-12-310000801337us-gaap:CostApproachValuationTechniqueMember2020-12-310000801337us-gaap:MarketApproachValuationTechniqueMember2020-12-310000801337wbs:LoansheldforsaleMember2020-12-310000801337wbs:LoansheldforsaleMember2019-12-310000801337wbs:RabbiTrustMember2020-12-310000801337us-gaap:PrivateEquityFundsDomesticMember2019-09-300000801337us-gaap:FairValueInputsLevel1Memberus-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberwbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberwbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2020-12-310000801337us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberwbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberwbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberwbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337wbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:CollateralizedMortgageObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberwbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberwbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337wbs:AgencyCommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2019-12-310000801337us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:DerivativeFinancialInstrumentsAssetsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:LoanOriginationCommitmentsMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberwbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberwbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberwbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337wbs:InvestmentsHeldInRabbiTrustMemberus-gaap:FairValueMeasurementsRecurringMember2019-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:PrivateEquityFundsDomesticMember2020-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMember2020-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMember2020-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMember2019-12-310000801337us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2020-12-310000801337us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2020-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2019-12-310000801337us-gaap:ResidentialMortgageMemberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2019-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberwbs:DepositsOtherThanTimeDepositsMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberwbs:DepositsOtherThanTimeDepositsMember2020-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberwbs:DepositsOtherThanTimeDepositsMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberwbs:DepositsOtherThanTimeDepositsMember2019-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberwbs:TimeDepositsMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberwbs:TimeDepositsMember2020-12-310000801337us-gaap:FairValueMeasurementsNonrecurringMemberwbs:TimeDepositsMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueMeasurementsNonrecurringMemberwbs:TimeDepositsMember2019-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2019-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2018-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2019-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2018-12-310000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2019-12-310000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2018-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2020-01-012020-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2019-01-012019-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2020-01-012020-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2019-01-012019-12-310000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2020-01-012020-12-310000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2019-01-012019-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2020-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2020-12-310000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2020-12-310000801337us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2020-12-310000801337us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2019-12-310000801337us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2020-01-012020-12-310000801337us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2019-01-012019-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2018-01-012018-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2019-01-012019-09-300000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2018-01-012018-09-300000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2018-01-012018-12-310000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2019-01-012019-09-300000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2018-01-012018-09-300000801337us-gaap:DefinedBenefitPostretirementHealthCoverageMember2018-01-012018-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:ExchangeTradedFundsMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:ExchangeTradedFundsMember2020-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:ExchangeTradedFundsMember2020-12-310000801337us-gaap:ExchangeTradedFundsMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:ExchangeTradedFundsMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:ExchangeTradedFundsMember2019-12-310000801337us-gaap:FairValueInputsLevel3Memberus-gaap:ExchangeTradedFundsMember2019-12-310000801337us-gaap:ExchangeTradedFundsMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2020-12-310000801337us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueInputsLevel3Member2020-12-310000801337us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2019-12-310000801337us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMemberus-gaap:FairValueInputsLevel3Member2019-12-310000801337us-gaap:DefinedBenefitPlanCashAndCashEquivalentsMember2019-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:DefinedBenefitPlanCommonCollectiveTrustMember2020-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:DefinedBenefitPlanCommonCollectiveTrustMember2020-12-310000801337us-gaap:DefinedBenefitPlanCommonCollectiveTrustMemberus-gaap:FairValueInputsLevel3Member2020-12-310000801337us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember2020-12-310000801337us-gaap:FairValueInputsLevel1Memberus-gaap:DefinedBenefitPlanCommonCollectiveTrustMember2019-12-310000801337us-gaap:FairValueInputsLevel2Memberus-gaap:DefinedBenefitPlanCommonCollectiveTrustMember2019-12-310000801337us-gaap:DefinedBenefitPlanCommonCollectiveTrustMemberus-gaap:FairValueInputsLevel3Member2019-12-310000801337us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember2019-12-310000801337us-gaap:FairValueInputsLevel1Member2020-12-310000801337us-gaap:FairValueInputsLevel2Member2020-12-310000801337us-gaap:FairValueInputsLevel3Member2020-12-310000801337us-gaap:FairValueInputsLevel1Member2019-12-310000801337us-gaap:FairValueInputsLevel2Member2019-12-310000801337us-gaap:FairValueInputsLevel3Member2019-12-310000801337us-gaap:FixedIncomeFundsMember2020-12-310000801337us-gaap:FixedIncomeFundsMember2019-12-310000801337us-gaap:EquityFundsMember2020-12-310000801337us-gaap:EquityFundsMember2019-12-310000801337us-gaap:PensionPlansDefinedBenefitMember2020-10-012020-12-310000801337us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefitMember2020-10-012020-12-3100008013372020-01-010000801337us-gaap:RestrictedStockMember2020-01-012020-12-310000801337us-gaap:RestrictedStockMember2019-01-012019-12-310000801337us-gaap:RestrictedStockMember2018-01-012018-12-310000801337us-gaap:RestrictedStockMember2019-12-310000801337us-gaap:PerformanceSharesMember2019-12-310000801337us-gaap:EmployeeStockOptionMember2019-12-310000801337us-gaap:PerformanceSharesMember2020-01-012020-12-310000801337us-gaap:EmployeeStockOptionMember2020-01-012020-12-310000801337us-gaap:RestrictedStockMember2020-12-310000801337us-gaap:PerformanceSharesMember2020-12-310000801337us-gaap:EmployeeStockOptionMember2020-12-310000801337srt:MinimumMember2020-01-012020-12-310000801337srt:MaximumMember2020-01-012020-12-310000801337srt:MaximumMemberus-gaap:RestrictedStockMember2020-12-310000801337wbs:IncentiveStockOptionsMember2020-01-012020-12-310000801337wbs:NonQualifiedStockOptionsMember2020-12-310000801337wbs:IncentiveStockOptionsMember2020-12-310000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2020-12-310000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2020-12-310000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2020-12-310000801337us-gaap:CorporateNonSegmentMember2020-12-310000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2019-12-310000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-12-310000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-12-310000801337us-gaap:CorporateNonSegmentMember2019-12-310000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2020-01-012020-12-310000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2020-01-012020-12-310000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2020-01-012020-12-310000801337us-gaap:CorporateNonSegmentMember2020-01-012020-12-310000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2019-01-012019-12-310000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-01-012019-12-310000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-01-012019-12-310000801337us-gaap:CorporateNonSegmentMember2019-01-012019-12-310000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-12-310000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-12-310000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-12-310000801337us-gaap:CorporateNonSegmentMember2018-01-012018-12-310000801337wbs:CommercialBankingMemberwbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMember2019-01-012019-09-300000801337wbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-01-012019-09-300000801337wbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-01-012019-09-300000801337wbs:DepositServiceFeesMemberus-gaap:CorporateNonSegmentMember2019-01-012019-09-300000801337wbs:DepositServiceFeesMember2019-01-012019-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2019-01-012019-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-01-012019-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-01-012019-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:CorporateNonSegmentMember2019-01-012019-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember2019-01-012019-09-300000801337wbs:OtherNonInterestIncomeMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2019-01-012019-09-300000801337wbs:OtherNonInterestIncomeMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-01-012019-09-300000801337wbs:OtherNonInterestIncomeMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-01-012019-09-300000801337wbs:OtherNonInterestIncomeMemberus-gaap:CorporateNonSegmentMember2019-01-012019-09-300000801337wbs:OtherNonInterestIncomeMember2019-01-012019-09-300000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2019-01-012019-09-300000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-01-012019-09-300000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-01-012019-09-300000801337us-gaap:CorporateNonSegmentMember2019-01-012019-09-3000008013372019-01-012019-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2019-01-012019-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2019-01-012019-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2019-01-012019-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:CorporateNonSegmentMember2019-01-012019-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMember2019-01-012019-09-300000801337wbs:CommercialBankingMemberwbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMember2018-01-012018-09-300000801337wbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-09-300000801337wbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-09-300000801337wbs:DepositServiceFeesMemberus-gaap:CorporateNonSegmentMember2018-01-012018-09-300000801337wbs:DepositServiceFeesMember2018-01-012018-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:CorporateNonSegmentMember2018-01-012018-09-300000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember2018-01-012018-09-300000801337wbs:OtherNonInterestIncomeMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-09-300000801337wbs:OtherNonInterestIncomeMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-09-300000801337wbs:OtherNonInterestIncomeMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-09-300000801337wbs:OtherNonInterestIncomeMemberus-gaap:CorporateNonSegmentMember2018-01-012018-09-300000801337wbs:OtherNonInterestIncomeMember2018-01-012018-09-300000801337wbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-09-300000801337us-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-09-300000801337us-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-09-300000801337us-gaap:CorporateNonSegmentMember2018-01-012018-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:CorporateNonSegmentMember2018-01-012018-09-300000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMember2018-01-012018-09-300000801337wbs:CommercialBankingMemberwbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMember2018-01-012018-12-310000801337wbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-12-310000801337wbs:DepositServiceFeesMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-12-310000801337wbs:DepositServiceFeesMemberus-gaap:CorporateNonSegmentMember2018-01-012018-12-310000801337wbs:DepositServiceFeesMember2018-01-012018-12-310000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-12-310000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-12-310000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-12-310000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMemberus-gaap:CorporateNonSegmentMember2018-01-012018-12-310000801337us-gaap:InvestmentAdvisoryManagementAndAdministrativeServiceMember2018-01-012018-12-310000801337wbs:OtherNonInterestIncomeMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-12-310000801337wbs:OtherNonInterestIncomeMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-12-310000801337wbs:OtherNonInterestIncomeMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-12-310000801337wbs:OtherNonInterestIncomeMemberus-gaap:CorporateNonSegmentMember2018-01-012018-12-310000801337wbs:OtherNonInterestIncomeMember2018-01-012018-12-310000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberwbs:CommercialBankingMemberus-gaap:OperatingSegmentsMember2018-01-012018-12-310000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:OperatingSegmentsMemberwbs:HSABankMember2018-01-012018-12-310000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:OperatingSegmentsMemberwbs:CommunityBankingMember2018-01-012018-12-310000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMemberus-gaap:CorporateNonSegmentMember2018-01-012018-12-310000801337wbs:NonInterestIncomeWithintheScopeofOtherGAAPTopicsMember2018-01-012018-12-310000801337us-gaap:CommitmentsToExtendCreditMember2020-12-310000801337us-gaap:CommitmentsToExtendCreditMember2019-12-310000801337us-gaap:StandbyLettersOfCreditMember2020-12-310000801337us-gaap:StandbyLettersOfCreditMember2019-12-310000801337us-gaap:LetterOfCreditMember2020-12-310000801337us-gaap:LetterOfCreditMember2019-12-310000801337us-gaap:AllowanceForCreditLossMember2019-12-310000801337us-gaap:AllowanceForCreditLossMember2018-12-310000801337us-gaap:AccountingStandardsUpdate201613Member2019-12-310000801337us-gaap:AccountingStandardsUpdate201613Member2018-12-310000801337us-gaap:AllowanceForCreditLossMember2020-01-012020-12-310000801337us-gaap:AllowanceForCreditLossMember2019-01-012019-12-310000801337us-gaap:AllowanceForCreditLossMember2020-12-310000801337srt:ParentCompanyMember2020-12-310000801337srt:ParentCompanyMember2019-12-310000801337srt:ParentCompanyMember2020-01-012020-12-310000801337srt:ParentCompanyMember2019-01-012019-12-310000801337srt:ParentCompanyMember2018-01-012018-12-310000801337srt:ParentCompanyMember2018-12-310000801337srt:ParentCompanyMember2017-12-3100008013372020-01-012020-03-3100008013372020-04-012020-06-3000008013372020-07-012020-09-3000008013372020-10-012020-12-3100008013372019-01-012019-03-3100008013372019-04-012019-06-3000008013372019-07-012019-09-3000008013372019-10-012019-12-31

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

_______________________________________________________________________________

FORM 10-K

_______________________________________________________________________________

☒    Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31, 2020

or

☐    Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from ____ to ____

Commission File Number: 001-31486

_______________________________________________________________________________________________