20-F 1 cs-20211231.htm 20-F 20-F
250000 8.0000000000 0 0 4399680200 0 0 0 3.0000000000 3.0000000000 3.0000000000 7.0000000000 0.0000000000 6.0000000000 3.0000000000 7.0000000000 3.0000000000 3.0000000000 0 0 7 4 3 3 0.046 895810000000 0 0 0 0.0100 0 0 0 0 0 0 0 0 0 0 7 4 3 3 12.0000000000 0.50 3.0000000000 3.0000000000 4.0000000000 5.0000000000 4.0000000000 5.0000000000 0.40 0.50 0.10 4.0000000000 5.0000000000 7.0000000000 0 13143000000 13143000000 5.0000000000 3.0000000000 true true true true 20-F true 2021-12-31 2021-12-31 false false false U.S. GAAP V8 V8 No No Yes Yes Large Accelerated Filer false false false 0001159510 0001053092 false false --12-31 --12-31 2021 2021 FY FY true true true true true true true true The BVG 2020 tables were used, which included final 2018 CMI projections, with a long-term rate of improvement of 1.25% per annum. 102% of Self-Administered Pension Scheme (SAPS) S3 light tables were used, which included final CMI projections, with a long-term rate of improvement of 1.25% per annum. 102% of Self-Administered Pension Scheme (SAPS) S3 light tables were used, which included proposed CMI projections with a long-term rate of improvement of 1.25% per annum. 0001159510 2021-12-31 0001159510 2021-01-01 2021-12-31 0001159510 2020-01-01 2020-12-31 0001159510 2019-01-01 2019-12-31 0001159510 2020-12-31 0001159510 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2021-12-31 0001159510 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-12-31 0001159510 us-gaap:CommonStockMember 2020-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2020-12-31 0001159510 us-gaap:RetainedEarningsMember 2020-12-31 0001159510 us-gaap:TreasuryStockMember 2020-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-12-31 0001159510 us-gaap:ParentMember 2020-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2020-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2021-01-01 2021-12-31 0001159510 us-gaap:RetainedEarningsMember 2021-01-01 2021-12-31 0001159510 us-gaap:ParentMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommonStockMember 2021-01-01 2021-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2021-01-01 2021-12-31 0001159510 us-gaap:TreasuryStockMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommonStockMember 2021-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2021-12-31 0001159510 us-gaap:RetainedEarningsMember 2021-12-31 0001159510 us-gaap:TreasuryStockMember 2021-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-12-31 0001159510 us-gaap:ParentMember 2021-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2021-12-31 0001159510 us-gaap:CommonStockMember 2019-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2019-12-31 0001159510 us-gaap:RetainedEarningsMember 2019-12-31 0001159510 us-gaap:TreasuryStockMember 2019-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-12-31 0001159510 us-gaap:ParentMember 2019-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2019-12-31 0001159510 2019-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2020-01-01 2020-12-31 0001159510 us-gaap:RetainedEarningsMember 2020-01-01 2020-12-31 0001159510 us-gaap:ParentMember 2020-01-01 2020-12-31 0001159510 us-gaap:RetainedEarningsMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2019-12-31 0001159510 us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2019-12-31 0001159510 srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2019-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommonStockMember 2020-01-01 2020-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2020-01-01 2020-12-31 0001159510 us-gaap:TreasuryStockMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommonStockMember 2018-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2018-12-31 0001159510 us-gaap:RetainedEarningsMember 2018-12-31 0001159510 us-gaap:TreasuryStockMember 2018-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2018-12-31 0001159510 us-gaap:ParentMember 2018-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2018-12-31 0001159510 2018-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2019-01-01 2019-12-31 0001159510 us-gaap:RetainedEarningsMember 2019-01-01 2019-12-31 0001159510 us-gaap:ParentMember 2019-01-01 2019-12-31 0001159510 us-gaap:RetainedEarningsMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2018-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2018-12-31 0001159510 us-gaap:ParentMember srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2018-12-31 0001159510 srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2018-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2019-01-01 2019-12-31 0001159510 us-gaap:TreasuryStockMember 2019-01-01 2019-12-31 0001159510 cs:RevisionOfPriorPeriodAdjustmentNettingTreatmentMember 2021-12-31 0001159510 cs:RevisionOfPriorPeriodAdjustmentNettingTreatmentMember 2021-01-01 2021-12-31 0001159510 cs:RevisionOfPriorPeriodAdjustmentSharebasedCompensationReclassification.tMember 2021-01-01 2021-12-31 0001159510 cs:RevisionOfPriorPeriodAdjustmentSharebasedCompensationReclassification.tMember 2020-01-01 2020-12-31 0001159510 srt:MinimumMember 2021-01-01 2021-12-31 0001159510 srt:MaximumMember 2021-01-01 2021-12-31 0001159510 srt:MinimumMember us-gaap:BuildingMember 2021-01-01 2021-12-31 0001159510 srt:MaximumMember us-gaap:BuildingMember 2021-01-01 2021-12-31 0001159510 cs:ArchegosCapitalManagementMember 2021-01-01 2021-03-31 0001159510 cs:ArchegosCapitalManagementMember 2021-04-01 2021-06-30 0001159510 cs:ArchegosCapitalManagementMember 2021-07-01 2021-09-30 0001159510 cs:ArchegosCapitalManagementMember 2021-10-01 2021-12-31 0001159510 cs:ArchegosCapitalManagementMember 2021-01-01 2021-12-31 0001159510 cs:GreensillCapitalMember 2021-12-31 0001159510 cs:CreditSuisseLifeAndPensionsAgMember 2021-01-01 2021-12-31 0001159510 cs:YorkCapitalManagementMember 2021-07-01 2021-09-30 0001159510 cs:YorkCapitalManagementMember 2020-10-01 2020-12-31 0001159510 cs:AllfundsGroupMember 2021-01-01 2021-12-31 0001159510 cs:AllfundsGroupMember 2020-01-01 2020-12-31 0001159510 cs:SeriesAMCNsMember 2021-01-01 2021-12-31 0001159510 cs:SeriesBMCNsMember 2021-01-01 2021-12-31 0001159510 cs:SeriesAMCNsMember 2020-06-30 0001159510 cs:SeriesBMCNsMember 2020-06-30 0001159510 cs:ShareholderRegisteredInShareRegisterMember cs:ChaseNomineesLtdMember 2021-12-31 0001159510 cs:ShareholderRegisteredInShareRegisterMember cs:ChaseNomineesLtdMember 2020-12-31 0001159510 cs:ShareholderRegisteredInShareRegisterMember cs:NortrustNomineesLtdMember 2021-12-31 0001159510 cs:ShareholderRegisteredInShareRegisterMember cs:NortrustNomineesLtdMember 2020-12-31 0001159510 cs:ShareholderRegisteredInShareRegisterMember cs:TheBankOfNewYorkMellonMember 2021-12-31 0001159510 cs:HarrisAssociatesLpMember 2013-11-04 0001159510 cs:HarrisAssociatesInvestmentTrustMember 2018-08-01 0001159510 cs:QatarHoldingLlcMember 2021-11-12 0001159510 cs:CreditSuisseInternationalMember us-gaap:SubsequentEventMember cs:LossContingencyStadtwerkeMunchenMember 2022-03-01 2022-03-31 0001159510 us-gaap:OperatingSegmentsMember cs:SwissUniversalBankMember 2021-01-01 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:SwissUniversalBankMember 2020-01-01 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:SwissUniversalBankMember 2019-01-01 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InternationalWealthManagementMember 2021-01-01 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InternationalWealthManagementMember 2020-01-01 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InternationalWealthManagementMember 2019-01-01 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AsiaPacificSegmentMember 2021-01-01 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AsiaPacificSegmentMember 2020-01-01 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AsiaPacificSegmentMember 2019-01-01 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AssetManagementMember 2021-01-01 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AssetManagementMember 2020-01-01 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AssetManagementMember 2019-01-01 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InvestmentBankMember 2021-01-01 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InvestmentBankMember 2020-01-01 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InvestmentBankMember 2019-01-01 2019-12-31 0001159510 us-gaap:CorporateNonSegmentMember 2021-01-01 2021-12-31 0001159510 us-gaap:CorporateNonSegmentMember 2020-01-01 2020-12-31 0001159510 us-gaap:CorporateNonSegmentMember 2019-01-01 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:SwissUniversalBankMember 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:SwissUniversalBankMember 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InternationalWealthManagementMember 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InternationalWealthManagementMember 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AsiaPacificSegmentMember 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AsiaPacificSegmentMember 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AssetManagementMember 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AssetManagementMember 2020-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InvestmentBankMember 2021-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InvestmentBankMember 2020-12-31 0001159510 us-gaap:CorporateNonSegmentMember 2021-12-31 0001159510 us-gaap:CorporateNonSegmentMember 2020-12-31 0001159510 country:CH 2021-01-01 2021-12-31 0001159510 country:CH 2020-01-01 2020-12-31 0001159510 country:CH 2019-01-01 2019-12-31 0001159510 us-gaap:EMEAMember 2021-01-01 2021-12-31 0001159510 us-gaap:EMEAMember 2020-01-01 2020-12-31 0001159510 us-gaap:EMEAMember 2019-01-01 2019-12-31 0001159510 srt:AmericasMember 2021-01-01 2021-12-31 0001159510 srt:AmericasMember 2020-01-01 2020-12-31 0001159510 srt:AmericasMember 2019-01-01 2019-12-31 0001159510 srt:AsiaPacificMember 2021-01-01 2021-12-31 0001159510 srt:AsiaPacificMember 2020-01-01 2020-12-31 0001159510 srt:AsiaPacificMember 2019-01-01 2019-12-31 0001159510 country:CH 2021-12-31 0001159510 country:CH 2020-12-31 0001159510 us-gaap:EMEAMember 2021-12-31 0001159510 us-gaap:EMEAMember 2020-12-31 0001159510 srt:AmericasMember 2021-12-31 0001159510 srt:AmericasMember 2020-12-31 0001159510 srt:AsiaPacificMember 2021-12-31 0001159510 srt:AsiaPacificMember 2020-12-31 0001159510 us-gaap:MortgageBankingMember 2021-01-01 2021-12-31 0001159510 us-gaap:MortgageBankingMember 2020-01-01 2020-12-31 0001159510 us-gaap:MortgageBankingMember 2019-01-01 2019-12-31 0001159510 us-gaap:InvestmentAdviceMember 2021-01-01 2021-12-31 0001159510 us-gaap:InvestmentAdviceMember 2020-01-01 2020-12-31 0001159510 us-gaap:InvestmentAdviceMember 2019-01-01 2019-12-31 0001159510 cs:OtherSecuritiesBusinessMember 2021-01-01 2021-12-31 0001159510 cs:OtherSecuritiesBusinessMember 2020-01-01 2020-12-31 0001159510 cs:OtherSecuritiesBusinessMember 2019-01-01 2019-12-31 0001159510 us-gaap:FiduciaryAndTrustMember 2021-01-01 2021-12-31 0001159510 us-gaap:FiduciaryAndTrustMember 2020-01-01 2020-12-31 0001159510 us-gaap:FiduciaryAndTrustMember 2019-01-01 2019-12-31 0001159510 cs:UnderwritingMember 2021-01-01 2021-12-31 0001159510 cs:UnderwritingMember 2020-01-01 2020-12-31 0001159510 cs:UnderwritingMember 2019-01-01 2019-12-31 0001159510 cs:BrokerageMember 2021-01-01 2021-12-31 0001159510 cs:BrokerageMember 2020-01-01 2020-12-31 0001159510 cs:BrokerageMember 2019-01-01 2019-12-31 0001159510 cs:UnderwritingAndBrokerageMember 2021-01-01 2021-12-31 0001159510 cs:UnderwritingAndBrokerageMember 2020-01-01 2020-12-31 0001159510 cs:UnderwritingAndBrokerageMember 2019-01-01 2019-12-31 0001159510 us-gaap:ServiceOtherMember 2021-01-01 2021-12-31 0001159510 us-gaap:ServiceOtherMember 2020-01-01 2020-12-31 0001159510 us-gaap:ServiceOtherMember 2019-01-01 2019-12-31 0001159510 us-gaap:FixedIncomeInterestRateMember 2021-01-01 2021-12-31 0001159510 us-gaap:FixedIncomeInterestRateMember 2020-01-01 2020-12-31 0001159510 us-gaap:FixedIncomeInterestRateMember 2019-01-01 2019-12-31 0001159510 us-gaap:ForeignExchangeMember 2021-01-01 2021-12-31 0001159510 us-gaap:ForeignExchangeMember 2020-01-01 2020-12-31 0001159510 us-gaap:ForeignExchangeMember 2019-01-01 2019-12-31 0001159510 us-gaap:EquityMember 2021-01-01 2021-12-31 0001159510 us-gaap:EquityMember 2020-01-01 2020-12-31 0001159510 us-gaap:EquityMember 2019-01-01 2019-12-31 0001159510 us-gaap:CreditMember 2021-01-01 2021-12-31 0001159510 us-gaap:CreditMember 2020-01-01 2020-12-31 0001159510 us-gaap:CreditMember 2019-01-01 2019-12-31 0001159510 cs:CommodityEmissionAndEnergyProductsMember 2021-01-01 2021-12-31 0001159510 cs:CommodityEmissionAndEnergyProductsMember 2020-01-01 2020-12-31 0001159510 cs:CommodityEmissionAndEnergyProductsMember 2019-01-01 2019-12-31 0001159510 us-gaap:OtherTradingMember 2021-01-01 2021-12-31 0001159510 us-gaap:OtherTradingMember 2020-01-01 2020-12-31 0001159510 us-gaap:OtherTradingMember 2019-01-01 2019-12-31 0001159510 cs:DefinedBenefitAndDefinedContributionMember 2021-01-01 2021-12-31 0001159510 cs:DefinedBenefitAndDefinedContributionMember 2020-01-01 2020-12-31 0001159510 cs:DefinedBenefitAndDefinedContributionMember 2019-01-01 2019-12-31 0001159510 cs:CompensationAndBenefitsExpenseMember 2021-01-01 2021-12-31 0001159510 cs:CompensationAndBenefitsExpenseMember 2020-01-01 2020-12-31 0001159510 us-gaap:EmployeeSeveranceMember 2021-01-01 2021-12-31 0001159510 us-gaap:EmployeeSeveranceMember 2020-01-01 2020-12-31 0001159510 cs:CompensationAndBenefitsExpenseAcceleratedDeferredCompensationMember 2021-01-01 2021-12-31 0001159510 cs:CompensationAndBenefitsExpenseAcceleratedDeferredCompensationMember 2020-01-01 2020-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember 2021-01-01 2021-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember 2020-01-01 2020-12-31 0001159510 cs:UnsettledPensionObgliationMember 2021-01-01 2021-12-31 0001159510 cs:UnsettledPensionObgliationMember 2020-01-01 2020-12-31 0001159510 us-gaap:EmployeeSeveranceMember 2020-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember 2020-12-31 0001159510 us-gaap:EmployeeSeveranceMember 2018-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember 2018-12-31 0001159510 cs:GeneralAndAdministrativeExpenseExcludingAcceleratedAccumulatedDepreciationAndPensionObligationsMember 2021-01-01 2021-12-31 0001159510 cs:ExcludingUnsettledCompensationPensionObligationsAndAcceleratedAccumulatedDepreciationMember 2021-01-01 2021-12-31 0001159510 cs:GeneralAndAdministrativeExpenseExcludingAcceleratedAccumulatedDepreciationAndPensionObligationsMember 2020-01-01 2020-12-31 0001159510 cs:ExcludingUnsettledCompensationPensionObligationsAndAcceleratedAccumulatedDepreciationMember 2020-01-01 2020-12-31 0001159510 us-gaap:EmployeeSeveranceMember 2019-01-01 2019-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember 2019-01-01 2019-12-31 0001159510 us-gaap:EmployeeSeveranceMember 2021-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember 2021-12-31 0001159510 cs:UnsettledSharebasedCompensationObligationsMember 2021-01-01 2021-12-31 0001159510 cs:UnsettledSharebasedCompensationObligationsMember 2020-01-01 2020-12-31 0001159510 cs:UnsettledCashbasedCompensationObligationsMember 2021-01-01 2021-12-31 0001159510 cs:UnsettledCashbasedCompensationObligationsMember 2020-01-01 2020-12-31 0001159510 cs:RestructuringAcceleratedAccumulatedDepreciationMember 2021-01-01 2021-12-31 0001159510 cs:RestructuringAcceleratedAccumulatedDepreciationMember 2020-01-01 2020-12-31 0001159510 us-gaap:EmployeeSeveranceMember cs:LitigationProvisionMember 2020-01-01 2020-12-31 0001159510 us-gaap:OtherLiabilitiesMember us-gaap:EmployeeSeveranceMember 2020-01-01 2020-12-31 0001159510 us-gaap:GeneralAndAdministrativeExpenseMember cs:RightofUseAssetMember 2020-01-01 2020-12-31 0001159510 us-gaap:OtherLiabilitiesMember us-gaap:GeneralAndAdministrativeExpenseMember 2020-01-01 2020-12-31 0001159510 2021-10-01 2021-12-31 0001159510 2021-07-01 2021-09-30 0001159510 2021-04-01 2021-06-30 0001159510 2021-01-01 2021-03-31 0001159510 us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 us-gaap:DerivativeMember 2021-12-31 0001159510 us-gaap:DerivativeMember 2020-12-31 0001159510 us-gaap:OtherTradingMember 2021-12-31 0001159510 us-gaap:OtherTradingMember 2020-12-31 0001159510 cs:ShortPositionMember 2021-12-31 0001159510 cs:ShortPositionMember 2020-12-31 0001159510 cs:SwissFederalCantonalOrLocalGovernmentalEntitiesMember 2021-12-31 0001159510 cs:SwissFederalCantonalOrLocalGovernmentalEntitiesMember 2020-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 us-gaap:EquityMethodInvestmentsMember 2021-12-31 0001159510 us-gaap:EquityMethodInvestmentsMember 2020-12-31 0001159510 cs:EquitySecuritiesWithoutAReadilyDeterminableFairValueMember 2021-12-31 0001159510 cs:EquitySecuritiesWithoutAReadilyDeterminableFairValueMember 2020-12-31 0001159510 cs:EquitySecuritiesNetAssetValueMember 2021-12-31 0001159510 cs:EquitySecuritiesNetAssetValueMember 2020-12-31 0001159510 cs:EquitySecuritiesMeasurementAlternativeMember 2021-12-31 0001159510 cs:EquitySecuritiesMeasurementAlternativeMember 2020-12-31 0001159510 cs:EquitySecuritiesFairValueMember 2021-12-31 0001159510 cs:EquitySecuritiesFairValueMember 2020-12-31 0001159510 cs:EquitySecuritiesCostLessImpairmentMember 2021-12-31 0001159510 cs:EquitySecuritiesCostLessImpairmentMember 2020-12-31 0001159510 cs:RealEstateHeldForInvestmentMember 2021-12-31 0001159510 cs:RealEstateHeldForInvestmentMember 2020-12-31 0001159510 us-gaap:LifeAndAnnuityInsuranceProductLineMember 2021-12-31 0001159510 us-gaap:LifeAndAnnuityInsuranceProductLineMember 2020-12-31 0001159510 cs:ForeclosedOrRepossessedRealEstateMember 2021-12-31 0001159510 cs:ForeclosedOrRepossessedRealEstateMember 2020-12-31 0001159510 cs:RealEstateHeldForInvestmentMember cs:ForeclosedOrRepossessedRealEstateMember 2021-12-31 0001159510 cs:RealEstateHeldForInvestmentMember cs:ForeclosedOrRepossessedRealEstateMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2020-12-31 0001159510 us-gaap:GeographicDistributionDomesticMember 2021-12-31 0001159510 us-gaap:GeographicDistributionDomesticMember 2020-12-31 0001159510 us-gaap:GeographicDistributionForeignMember 2021-12-31 0001159510 us-gaap:GeographicDistributionForeignMember 2020-12-31 0001159510 cs:ScenarioMacroeconomicScenarioBaselineMember 2021-01-01 2021-12-31 0001159510 cs:ScenarioMacroeconomicScenarioDownsideMember 2021-01-01 2021-12-31 0001159510 cs:ScenarioMacroeconomicScenarioUpsideMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:CH cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember cs:EurozoneMember cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember cs:RealGDPGrowthRateYoYMember country:US 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:US cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2021-01-01 2021-12-31 0001159510 country:GB cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember cs:RealGDPGrowthRateYoYMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:RealGDPGrowthRateYoYMember country:GB cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioDownsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioDownsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioBaselineForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioBaselineForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2021-01-01 2021-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2021-01-01 2021-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioUpsideForecastOneYearMember 2020-01-01 2020-12-31 0001159510 cs:IndustrialProductionYoYMember cs:WorldMember cs:ScenarioMacroeconomicScenarioUpsideForecastTwoYearsMember 2020-01-01 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2019-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2018-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2018-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2021-01-01 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2020-01-01 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember 2019-01-01 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember 2019-01-01 2019-12-31 0001159510 srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember 2020-01-01 2020-12-31 0001159510 srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:ConsumerPortfolioSegmentMember 2020-01-01 2020-12-31 0001159510 srt:CumulativeEffectPeriodOfAdoptionAdjustmentMember us-gaap:CommercialPortfolioSegmentMember 2020-01-01 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:ConsumerPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:CommercialPortfolioSegmentMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:InternalInvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:InternalNoninvestmentGradeMember 2021-12-31 0001159510 cs:InternalCounterpartyRatingAAAToBBBRatingMember us-gaap:InternalInvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingBBToCRatingMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:InternalNoninvestmentGradeMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:FinancialAssetNotPastDueMember 2021-12-31 0001159510 cs:AgingAnalysisPastDueUpto30DaysMember 2021-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember 2021-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember 2021-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember 2021-12-31 0001159510 us-gaap:FinancialAssetPastDueMember 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:FinancialAssetNotPastDueMember 2020-12-31 0001159510 cs:AgingAnalysisPastDueUpto30DaysMember 2020-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember 2020-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember 2020-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember 2020-12-31 0001159510 us-gaap:FinancialAssetPastDueMember 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember 2021-01-01 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember 2019-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember 2020-01-01 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember 2021-01-01 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember 2019-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember cs:LoansCollateralizedBySecuritiesMember 2020-01-01 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember 2021-01-01 2021-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember 2019-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:ConsumerBorrowerMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember 2020-01-01 2020-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember 2021-01-01 2021-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:GovernmentSectorMember 2020-01-01 2020-12-31 0001159510 us-gaap:ConsumerPortfolioSegmentMember us-gaap:MortgageReceivablesMember 2019-01-01 2019-12-31 0001159510 cs:LoansCollateralizedBySecuritiesMember us-gaap:ConsumerPortfolioSegmentMember 2019-01-01 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:RealEstateSectorMember 2019-01-01 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:CommercialAndIndustrialSectorMember 2019-01-01 2019-12-31 0001159510 us-gaap:CommercialPortfolioSegmentMember us-gaap:FinancialServicesSectorMember 2019-01-01 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:SwissUniversalBankMember 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InternationalWealthManagementMember 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AsiaPacificSegmentMember 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:AssetManagementMember 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:InvestmentBankMember 2019-12-31 0001159510 us-gaap:OperatingSegmentsMember cs:StrategicResolutionUnitMember 2021-12-31 0001159510 us-gaap:TrademarksAndTradeNamesMember 2021-12-31 0001159510 us-gaap:TrademarksAndTradeNamesMember 2020-12-31 0001159510 us-gaap:CustomerRelationshipsMember 2021-12-31 0001159510 us-gaap:CustomerRelationshipsMember 2020-12-31 0001159510 us-gaap:OtherIntangibleAssetsMember 2021-12-31 0001159510 us-gaap:OtherIntangibleAssetsMember 2020-12-31 0001159510 cs:SalestypeLeasesMember 2021-12-31 0001159510 cs:DirectFinancingLeasesMember 2021-12-31 0001159510 cs:SalestypeLeasesMember 2020-12-31 0001159510 cs:DirectFinancingLeasesMember 2020-12-31 0001159510 cs:NonSwitzerlandMember 2021-12-31 0001159510 cs:NonSwitzerlandMember 2020-12-31 0001159510 us-gaap:StructuredFinanceMember 2021-12-31 0001159510 us-gaap:StructuredFinanceMember 2020-12-31 0001159510 us-gaap:StructuredFinanceMember us-gaap:EquityMember 2021-12-31 0001159510 us-gaap:StructuredFinanceMember us-gaap:EquityMember 2020-12-31 0001159510 us-gaap:StructuredFinanceMember us-gaap:FixedIncomeSecuritiesMember 2021-12-31 0001159510 us-gaap:StructuredFinanceMember us-gaap:FixedIncomeSecuritiesMember 2020-12-31 0001159510 us-gaap:StructuredFinanceMember us-gaap:CreditMember 2021-12-31 0001159510 us-gaap:StructuredFinanceMember us-gaap:CreditMember 2020-12-31 0001159510 cs:DebtInstrumentOtherMember us-gaap:StructuredFinanceMember 2021-12-31 0001159510 cs:DebtInstrumentOtherMember us-gaap:StructuredFinanceMember 2020-12-31 0001159510 cs:FixedRateMember us-gaap:SeniorNotesMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 cs:VariableRateMember us-gaap:SeniorNotesMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFourMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFourMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember cs:DebtInstrumentRedemptionThereafterMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember cs:DebtInstrumentRedemptionThereafterMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 cs:FixedRateMember us-gaap:SubordinatedDebtMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodOneMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodFourMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodFourMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember cs:DebtInstrumentRedemptionThereafterMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember cs:DebtInstrumentRedemptionThereafterMember cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 cs:GroupParentCompanyIntercompanyTransactionsExcludedMember 2021-12-31 0001159510 cs:FixedRateMember us-gaap:SeniorNotesMember srt:SubsidiariesMember 2021-12-31 0001159510 cs:VariableRateMember us-gaap:SeniorNotesMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodOneMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodOneMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFourMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFourMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SeniorNotesMember cs:DebtInstrumentRedemptionThereafterMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SeniorNotesMember cs:DebtInstrumentRedemptionThereafterMember srt:SubsidiariesMember 2021-12-31 0001159510 cs:FixedRateMember us-gaap:SubordinatedDebtMember srt:SubsidiariesMember 2021-12-31 0001159510 cs:VariableRateMember us-gaap:SubordinatedDebtMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodOneMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodOneMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodTwoMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodThreeMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodFourMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodFourMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember us-gaap:DebtInstrumentRedemptionPeriodFiveMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember us-gaap:SubordinatedDebtMember cs:DebtInstrumentRedemptionThereafterMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember us-gaap:SubordinatedDebtMember cs:DebtInstrumentRedemptionThereafterMember srt:SubsidiariesMember 2021-12-31 0001159510 cs:FixedRateMember cs:NonrecourseLiabilitiesFromConsolidatedViesMember srt:SubsidiariesMember 2021-12-31 0001159510 cs:VariableRateMember cs:NonrecourseLiabilitiesFromConsolidatedViesMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember cs:NonrecourseLiabilitiesFromConsolidatedViesMember us-gaap:DebtInstrumentRedemptionPeriodOneMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember cs:NonrecourseLiabilitiesFromConsolidatedViesMember us-gaap:DebtInstrumentRedemptionPeriodOneMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MinimumMember cs:NonrecourseLiabilitiesFromConsolidatedViesMember cs:DebtInstrumentRedemptionThereafterMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:MaximumMember cs:NonrecourseLiabilitiesFromConsolidatedViesMember cs:DebtInstrumentRedemptionThereafterMember srt:SubsidiariesMember 2021-12-31 0001159510 srt:SubsidiariesMember 2021-12-31 0001159510 cs:ConsolidatedBankMember 2021-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2020-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2020-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2020-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2020-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2020-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2020-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2021-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2021-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2021-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2021-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2021-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2021-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2019-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2019-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2019-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2019-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2019-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2018-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2018-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2018-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2018-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2018-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2018-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2019-01-01 2019-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2019-01-01 2019-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2019-01-01 2019-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2019-01-01 2019-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember 2019-01-01 2019-12-31 0001159510 us-gaap:AccumulatedGainLossFinancialLiabilityFairValueOptionAttributableToParentMember 2019-01-01 2019-12-31 0001159510 us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-12-31 0001159510 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember 2019-01-01 2019-12-31 0001159510 cs:DebtInstrumentCapitalInstrumentReservedMember 2021-12-31 0001159510 cs:DebtInstrumentCapitalInstrumentReservedMember 2020-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:ExchangeClearedMember 2021-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:ExchangeClearedMember 2020-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:OverTheCounterMember 2021-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:OverTheCounterMember 2020-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:ExchangeTradedMember 2021-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:ExchangeTradedMember 2020-12-31 0001159510 us-gaap:InterestRateContractMember 2021-12-31 0001159510 us-gaap:InterestRateContractMember 2020-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:ExchangeClearedMember 2021-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:ExchangeClearedMember 2020-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:OverTheCounterMember 2021-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:OverTheCounterMember 2020-12-31 0001159510 us-gaap:ForeignExchangeContractMember 2021-12-31 0001159510 us-gaap:ForeignExchangeContractMember 2020-12-31 0001159510 us-gaap:EquityContractMember us-gaap:OverTheCounterMember 2021-12-31 0001159510 us-gaap:EquityContractMember us-gaap:OverTheCounterMember 2020-12-31 0001159510 us-gaap:EquityContractMember us-gaap:ExchangeTradedMember 2021-12-31 0001159510 us-gaap:EquityContractMember us-gaap:ExchangeTradedMember 2020-12-31 0001159510 us-gaap:EquityContractMember 2021-12-31 0001159510 us-gaap:EquityContractMember 2020-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:ExchangeClearedMember 2021-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:ExchangeClearedMember 2020-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:OverTheCounterMember 2021-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:OverTheCounterMember 2020-12-31 0001159510 us-gaap:CreditRiskContractMember 2021-12-31 0001159510 us-gaap:CreditRiskContractMember 2020-12-31 0001159510 us-gaap:OtherContractMember us-gaap:OverTheCounterMember 2021-12-31 0001159510 us-gaap:OtherContractMember us-gaap:OverTheCounterMember 2020-12-31 0001159510 us-gaap:OtherContractMember us-gaap:ExchangeTradedMember 2021-12-31 0001159510 us-gaap:OtherContractMember us-gaap:ExchangeTradedMember 2020-12-31 0001159510 us-gaap:OtherContractMember 2021-12-31 0001159510 us-gaap:OtherContractMember 2020-12-31 0001159510 us-gaap:ExchangeClearedMember 2021-12-31 0001159510 us-gaap:ExchangeClearedMember 2020-12-31 0001159510 us-gaap:OverTheCounterMember 2021-12-31 0001159510 us-gaap:OverTheCounterMember 2020-12-31 0001159510 us-gaap:ExchangeTradedMember 2021-12-31 0001159510 us-gaap:ExchangeTradedMember 2020-12-31 0001159510 us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember 2021-12-31 0001159510 us-gaap:TradingLiabilitiesMember 2021-12-31 0001159510 us-gaap:TradingAssetsExcludingDebtAndEquitySecuritiesMember 2020-12-31 0001159510 us-gaap:TradingLiabilitiesMember 2020-12-31 0001159510 us-gaap:OtherAssetsMember 2021-12-31 0001159510 us-gaap:OtherLiabilitiesMember 2021-12-31 0001159510 us-gaap:OtherAssetsMember 2020-12-31 0001159510 us-gaap:OtherLiabilitiesMember 2020-12-31 0001159510 us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember 2021-12-31 0001159510 us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember 2020-12-31 0001159510 cs:ObligationToReturnSecuritiesReceivedAsCollateralMember 2021-12-31 0001159510 cs:ObligationToReturnSecuritiesReceivedAsCollateralMember 2020-12-31 0001159510 country:GB 2021-01-01 2021-12-31 0001159510 cs:SwitzerlandHongKongMember 2021-01-01 2021-12-31 0001159510 cs:UKSWITZERLANDMember 2020-01-01 2020-12-31 0001159510 cs:UKHongKongMember 2020-01-01 2020-12-31 0001159510 cs:JapanUSUKMember 2019-01-01 2019-12-31 0001159510 country:GB 2019-01-01 2019-12-31 0001159510 country:US 2020-12-31 0001159510 country:US 2021-12-31 0001159510 country:US 2021-01-01 2021-12-31 0001159510 srt:MinimumMember 2021-12-31 0001159510 srt:MaximumMember 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2021-01-01 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2020-01-01 2020-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2019-01-01 2019-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2021-01-01 2021-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2020-01-01 2020-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2019-01-01 2019-12-31 0001159510 cs:ContingentCapitalAwardsCcaMember 2021-01-01 2021-12-31 0001159510 cs:ContingentCapitalAwardsCcaMember 2020-01-01 2020-12-31 0001159510 cs:ContingentCapitalAwardsCcaMember 2019-01-01 2019-12-31 0001159510 cs:OtherCashAwardsMember 2021-01-01 2021-12-31 0001159510 cs:OtherCashAwardsMember 2020-01-01 2020-12-31 0001159510 cs:OtherCashAwardsMember 2019-01-01 2019-12-31 0001159510 cs:CashRetentionAwardsMember 2021-01-01 2021-12-31 0001159510 cs:CashRetentionAwardsMember 2020-01-01 2020-12-31 0001159510 cs:CashRetentionAwardsMember 2019-01-01 2019-12-31 0001159510 us-gaap:StockCompensationPlanMember 2021-01-01 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember 2020-01-01 2020-12-31 0001159510 us-gaap:StockCompensationPlanMember 2019-01-01 2019-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2021-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2021-12-31 0001159510 cs:ContingentCapitalAwardsCcaMember 2021-12-31 0001159510 cs:OtherCashAwardsMember 2021-12-31 0001159510 cs:CashRetentionAwardsMember 2021-12-31 0001159510 us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2022Member 2022-01-01 2022-02-11 0001159510 us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 srt:ScenarioForecastMember us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2021Member 2021-01-01 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2020Member 2020-01-01 2020-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2021Member 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember cs:AwardDateFebruary2020Member 2020-12-31 0001159510 us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:BlockedSharesMember cs:AwardDateFebruary2022Member 2022-01-01 2022-02-11 0001159510 us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:BlockedSharesMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 us-gaap:StockCompensationPlanMember cs:BlockedSharesMember cs:AwardDateFebruary2021Member 2021-01-01 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:BlockedSharesMember cs:AwardDateFebruary2020Member 2020-01-01 2020-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:BlockedSharesMember cs:AwardDateFebruary2021Member 2021-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:BlockedSharesMember cs:AwardDateFebruary2020Member 2020-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2020-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2019-12-31 0001159510 us-gaap:StockCompensationPlanMember cs:ShareAwardsMember 2018-12-31 0001159510 us-gaap:SubsequentEventMember us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2022Member 2022-01-01 2022-02-11 0001159510 us-gaap:SubsequentEventMember us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 srt:ScenarioForecastMember us-gaap:SubsequentEventMember us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2021Member 2021-01-01 2021-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2020Member 2020-01-01 2020-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2021Member 2021-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember cs:AwardDateFebruary2020Member 2020-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2020-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2019-12-31 0001159510 us-gaap:PerformanceSharesMember cs:PerformanceShareAwardsMember 2018-12-31 0001159510 us-gaap:SubsequentEventMember cs:ContingentCapitalAwardsCcaMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 srt:ScenarioForecastMember us-gaap:SubsequentEventMember cs:ContingentCapitalAwardsCcaMember cs:AwardDateFebruary2022Member 2022-02-11 0001159510 cs:ContingentCapitalAwardsCcaMember cs:AwardDateFebruary2021Member 2020-12-31 0001159510 cs:ContingentCapitalAwardsCcaMember cs:AwardDateFebruary2020Member 2019-12-31 0001159510 cs:DeferredFixedCashAwardsMember 2021-12-31 0001159510 cs:DeferredFixedCashAwardsMember 2020-12-31 0001159510 cs:DeferredFixedCashAwardsMember 2019-12-31 0001159510 cs:DeferredFixedCashAwardsMember 2021-01-01 2021-12-31 0001159510 us-gaap:SubsequentEventMember cs:AwardDateFebruary2022Member cs:UpfrontCashAwardMember 2022-02-11 0001159510 cs:AwardDateFebruary2020Member cs:UpfrontCashAwardMember 2021-12-31 0001159510 cs:UpfrontCashAwardMember 2020-12-31 0001159510 cs:UpfrontCashAwardMember 2021-01-01 2021-12-31 0001159510 cs:CashRetentionAwardsMember 2020-12-31 0001159510 cs:CashRetentionAwardsMember 2019-12-31 0001159510 us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:AwardDateFebruary2022Member cs:StrategicDeliveryPlanMember 2022-01-01 2022-02-11 0001159510 us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:AwardDateFebruary2022Member cs:StrategicDeliveryPlanMember 2022-02-11 0001159510 srt:ScenarioForecastMember us-gaap:SubsequentEventMember us-gaap:StockCompensationPlanMember cs:AwardDateFebruary2022Member cs:StrategicDeliveryPlanMember 2022-02-11 0001159510 srt:ExecutiveOfficerMember 2021-12-31 0001159510 srt:ExecutiveOfficerMember 2020-12-31 0001159510 srt:ExecutiveOfficerMember 2019-12-31 0001159510 srt:ExecutiveOfficerMember 2018-12-31 0001159510 srt:ExecutiveOfficerMember 2021-01-01 2021-12-31 0001159510 srt:ExecutiveOfficerMember 2020-01-01 2020-12-31 0001159510 srt:ExecutiveOfficerMember 2019-01-01 2019-12-31 0001159510 srt:DirectorMember 2020-12-31 0001159510 srt:DirectorMember 2019-12-31 0001159510 srt:DirectorMember 2018-12-31 0001159510 srt:DirectorMember 2021-01-01 2021-12-31 0001159510 srt:DirectorMember 2020-01-01 2020-12-31 0001159510 srt:DirectorMember 2019-01-01 2019-12-31 0001159510 srt:DirectorMember 2021-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2020-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2019-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2018-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2021-01-01 2021-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2020-01-01 2020-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2019-01-01 2019-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2021-12-31 0001159510 country:CH 2021-01-01 2021-12-31 0001159510 country:CH 2020-01-01 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember 2020-01-01 2020-12-31 0001159510 srt:MinimumMember country:CH us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 srt:MaximumMember country:CH us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 srt:MinimumMember country:CH us-gaap:PensionPlansDefinedBenefitMember 2022-01-01 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember 2019-01-01 2019-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2020-01-01 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2019-01-01 2019-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2020-01-01 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-01-01 2019-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember 2019-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2019-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2019-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2021-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2021-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2020-12-31 0001159510 country:US us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 country:US us-gaap:PensionPlansDefinedBenefitMember 2020-01-01 2020-12-31 0001159510 srt:ScenarioForecastMember country:CH us-gaap:PensionPlansDefinedBenefitMember 2022-12-31 0001159510 srt:ScenarioForecastMember us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2022-12-31 0001159510 srt:ScenarioForecastMember us-gaap:ForeignPlanMember us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2022-12-31 0001159510 cs:ProjectedBenefitObligationExceedingAssetsMember us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2021-12-31 0001159510 cs:ProjectedBenefitObligationExceedingAssetsMember us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2020-12-31 0001159510 cs:AccumulatedBenefitObligationExceedingAssetsMember us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2021-12-31 0001159510 cs:AccumulatedBenefitObligationExceedingAssetsMember us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember 2020-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2021-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2020-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2021-01-01 2021-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2020-01-01 2020-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2020-01-01 2020-12-31 0001159510 cs:Age65Member country:CH cs:BVG2020Member 2021-12-31 0001159510 cs:Age65Member country:CH cs:BVG2020Member 2020-12-31 0001159510 cs:Age45Member country:CH cs:BVG2020Member 2021-12-31 0001159510 cs:Age45Member country:CH cs:BVG2020Member 2020-12-31 0001159510 cs:Age65Member country:GB cs:SAPSS3Member 2021-12-31 0001159510 cs:Age65Member country:GB cs:SAPSS3Member 2020-12-31 0001159510 cs:SAPSS3Member cs:Age45Member country:GB 2021-12-31 0001159510 cs:Age45Member country:GB cs:SAPSS3Member 2020-12-31 0001159510 cs:Age65Member country:US cs:Pri2012Member 2021-12-31 0001159510 cs:Age65Member country:US cs:Pri2012Member 2020-12-31 0001159510 cs:Age45Member country:US cs:Pri2012Member 2021-12-31 0001159510 cs:Age45Member country:US cs:Pri2012Member 2020-12-31 0001159510 cs:BVG2020Member 2021-01-01 2021-12-31 0001159510 cs:SAPSS3Member 2021-01-01 2021-12-31 0001159510 us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:RealEstateMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:RealEstateMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:RealEstateMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:RealEstateMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:RealEstateMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:RealEstateMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:RealEstateMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:RealEstateMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:DirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:DirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:DirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:DirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:DirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:DirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:DirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:DirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:AlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:AlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:AlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:AlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:AlternativeInvestmentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:AlternativeInvestmentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:AlternativeInvestmentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:AlternativeInvestmentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:PrivateEquityMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:PrivateEquityMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:PrivateEquityMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:PrivateEquityMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:PrivateEquityMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:PrivateEquityMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:PrivateEquityMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:PrivateEquityMember 2020-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:HedgeFundsMember country:CH us-gaap:PensionPlansDefinedBenefitMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:HedgeFundsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:HedgeFundsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:HedgeFundsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:HedgeFundsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:HedgeFundsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:HedgeFundsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:HedgeFundsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:OtherAlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:OtherAlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:OtherAlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:OtherAlternativeInvestmentsMember 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:OtherAlternativeInvestmentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:OtherAlternativeInvestmentsMember 2020-12-31 0001159510 cs:OtherAlternativeInvestmentsMember country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember cs:OtherAlternativeInvestmentsMember 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member 2021-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001159510 country:CH us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:CashAndCashEquivalentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:CashAndCashEquivalentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:DebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:DebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:SovereignDebtMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:SovereignDebtMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:SovereignDebtMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:SovereignDebtMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:SovereignDebtMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:SovereignDebtMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:SovereignDebtMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:SovereignDebtMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:CorporateDebtSecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:CorporateDebtSecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:EquitySecuritiesMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:EquitySecuritiesMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember cs:IndirectRealEstateInvestmentMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember cs:IndirectRealEstateInvestmentMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:AlternativeInvestmentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:AlternativeInvestmentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:AlternativeInvestmentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember cs:AlternativeInvestmentsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:AlternativeInvestmentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member cs:AlternativeInvestmentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member cs:AlternativeInvestmentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember cs:AlternativeInvestmentsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:HedgeFundsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:HedgeFundsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:HedgeFundsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:HedgeFundsMember 2021-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member us-gaap:HedgeFundsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel2Member us-gaap:HedgeFundsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel3Member us-gaap:HedgeFundsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:HedgeFundsMember 2020-12-31 0001159510 us-gaap:ForeignPlanMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:FairValueInputsLevel1Member cs:OtherAlternativeInvestmentsMember 2021-12-31 0001159510