0001159510 2009-12-31 0001159510 us-gaap:CommonStockMember 2009-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2009-12-31 0001159510 us-gaap:TreasuryStockMember 2009-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2009-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2009-12-31 0001159510 us-gaap:GuarantorSubsidiariesMember 2009-12-31 0001159510 cs:BankParentCompanyAndOtherSubsidiariesMember 2009-12-31 0001159510 cs:ConsolidatedBankMember 2009-12-31 0001159510 us-gaap:ParentCompanyMember 2009-12-31 0001159510 cs:OtherSubsidiariesMember 2009-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2009-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2009-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2009-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2009-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2009-12-31 0001159510 2010-12-31 0001159510 us-gaap:CommonStockMember 2010-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2010-12-31 0001159510 us-gaap:RetainedEarningsMember 2010-12-31 0001159510 us-gaap:TreasuryStockMember 2010-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2010-12-31 0001159510 us-gaap:ParentMember 2010-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2010-12-31 0001159510 us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:ConsumerLoansMember 2010-12-31 0001159510 cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:AgingAnalysisCurrentMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:ConsumerFinanceMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2010-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:ConsumerLoansMember 2010-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerFinanceMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerFinanceMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerLoansMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerLoansMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember 2010-12-31 0001159510 cs:ImpairedFinancingReceivableMember 2010-12-31 0001159510 cs:PrivateBankingMember 2010-12-31 0001159510 cs:InvestmentBankingMember 2010-12-31 0001159510 cs:AssetManagementSegmentMember 2010-12-31 0001159510 cs:SwitzerlandMember 2010-12-31 0001159510 cs:NonSwitzerlandMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:OtherTradingMember 2010-12-31 0001159510 cs:ShortPositionMember 2010-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 cs:SwissFederalCantonalOrLocalGovernmentalEntitiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember 2010-12-31 0001159510 us-gaap:BanksTrustAndInsuranceEquitiesMember 2010-12-31 0001159510 us-gaap:IndustrialMiscellaneousAndAllOthersMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2010-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2010-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2010-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2010-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2010-12-31 0001159510 us-gaap:GuarantorSubsidiariesMember 2010-12-31 0001159510 cs:BankParentCompanyAndOtherSubsidiariesMember 2010-12-31 0001159510 cs:ConsolidatedBankMember 2010-12-31 0001159510 us-gaap:ParentCompanyMember 2010-12-31 0001159510 cs:OtherSubsidiariesMember 2010-12-31 0001159510 us-gaap:PaymentGuaranteeMember 2010-12-31 0001159510 us-gaap:PerformanceGuaranteeMember 2010-12-31 0001159510 us-gaap:IndemnificationGuaranteeMember 2010-12-31 0001159510 cs:DerivativeGuaranteeMember 2010-12-31 0001159510 us-gaap:GuaranteeTypeOtherMember 2010-12-31 0001159510 cs:IrrevocableCommitmentsMember 2010-12-31 0001159510 cs:LoanCommitmentsMember 2010-12-31 0001159510 cs:ForwardReverseRepurchaseAgreementsMember 2010-12-31 0001159510 cs:OtherCommitmentsMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember 2010-12-31 0001159510 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember 2010-12-31 0001159510 cs:OtherAssetBackedSecuritiesMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:OtherAssetsMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:OtherAssetsMember 2010-12-31 0001159510 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:OtherAssetsMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:OtherAssetsMember 2010-12-31 0001159510 cs:OtherAssetBackedSecuritiesMember us-gaap:OtherAssetsMember 2010-12-31 0001159510 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember cs:TradingAssetsMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember cs:TradingAssetsMember 2010-12-31 0001159510 cs:OtherAssetBackedSecuritiesMember cs:TradingAssetsMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:OtherLiabilitiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:OtherLiabilitiesMember 2010-12-31 0001159510 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember us-gaap:OtherLiabilitiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:OtherLiabilitiesMember 2010-12-31 0001159510 cs:OtherAssetBackedSecuritiesMember us-gaap:OtherLiabilitiesMember 2010-12-31 0001159510 cs:CollateralizedDebtObligationsTransactionsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 cs:CommercialPaperConduitMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 cs:FinancialIntermediationSecuritizationsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 cs:FinancialIntermediationFundsMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 cs:FinancialIntermediationLoansMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 cs:FinancialIntermediationOtherMember us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2010-12-31 0001159510 cs:CollateralizedDebtObligationsTransactionsMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember 2010-12-31 0001159510 cs:FinancialIntermediationSecuritizationsMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember 2010-12-31 0001159510 cs:FinancialIntermediationFundsMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember 2010-12-31 0001159510 cs:FinancialIntermediationLoansMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember 2010-12-31 0001159510 cs:FinancialIntermediationOtherMember us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember 2010-12-31 0001159510 us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember 2010-12-31 0001159510 cs:FairValueDisclosureAggregateFairValueUnpaidPrincipalBalancesMember 2010-12-31 0001159510 cs:FairValueDisclosureAggregateCarryingValueUnpaidPrincipalBalancesMember 2010-12-31 0001159510 cs:FairValueDisclosureAggregateFairValueExceedingAggregateCarryingValueUnpaidPrincipalBalancesMember 2010-12-31 0001159510 us-gaap:FixedIncomeFundsMember cs:FundsHeldInTradingAssetsAndLiabilitiesMember 2010-12-31 0001159510 us-gaap:EquityFundsMember cs:FundsHeldInTradingAssetsAndLiabilitiesMember 2010-12-31 0001159510 us-gaap:SecuritiesSoldNotYetPurchasedMember cs:FundsHeldInTradingAssetsAndLiabilitiesMember 2010-12-31 0001159510 cs:FundsHeldInTradingAssetsAndLiabilitiesMember 2010-12-31 0001159510 us-gaap:FixedIncomeFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:HedgeFundsMember 2010-12-31 0001159510 us-gaap:EquityFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:HedgeFundsMember 2010-12-31 0001159510 cs:OtherFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:HedgeFundsMember 2010-12-31 0001159510 cs:FundsHeldInOtherInvestmentsMember us-gaap:HedgeFundsMember 2010-12-31 0001159510 us-gaap:FixedIncomeFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:PrivateEquityFundsMember 2010-12-31 0001159510 us-gaap:EquityFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:PrivateEquityFundsMember 2010-12-31 0001159510 us-gaap:RealEstateFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:PrivateEquityFundsMember 2010-12-31 0001159510 cs:OtherFundsMember cs:FundsHeldInOtherInvestmentsMember us-gaap:PrivateEquityFundsMember 2010-12-31 0001159510 cs:FundsHeldInOtherInvestmentsMember us-gaap:PrivateEquityFundsMember 2010-12-31 0001159510 cs:FundsHeldInOtherInvestmentsMember us-gaap:EquityMethodInvestmentsMember 2010-12-31 0001159510 cs:FundsHeldInOtherInvestmentsMember 2010-12-31 0001159510 us-gaap:CarryingReportedAmountFairValueDisclosureMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember 2010-12-31 0001159510 cs:DerivativeFairValueOfDerivativeMember 2010-12-31 0001159510 cs:DerivativeFairValueOfDerivativeCounterpartyNettingAmountMember 2010-12-31 0001159510 cs:DerivativeFairValueOfDerivativeAmountOffsetAgainstCollateralMember 2010-12-31 0001159510 cs:DerivativeFairValueOfDerivativeNetMember 2010-12-31 0001159510 cs:DerivativeFairValueOfDerivativeNetMemberRecordedInTradingAssetsAndTradingLiabilitiesMember 2010-12-31 0001159510 cs:DerivativeFairValueOfDerivativeNetMemberRecordedInOtherAssetsAndOtherLiabilitiesMember 2010-12-31 0001159510 cs:BilateralCounterpartiesMember 2010-12-31 0001159510 cs:SpecialPurposeEntitiesMember 2010-12-31 0001159510 cs:AcceleratedTerminationsMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember cs:CreditDerivativeMaturityLessThanOneYearMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember cs:CreditDerivativeMaturityLessThanOneYearMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember cs:CreditDerivativeMaturityBetweenOneAndFiveYearsMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember cs:CreditDerivativeMaturityBetweenOneAndFiveYearsMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember cs:CreditDerivativeMaturityGreaterThanFiveYearsMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember cs:CreditDerivativeMaturityGreaterThanFiveYearsMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember 2010-12-31 0001159510 cs:CreditDerivativeMaturityLessThanOneYearMember 2010-12-31 0001159510 cs:CreditDerivativeMaturityBetweenOneAndFiveYearsMember 2010-12-31 0001159510 cs:CreditDerivativeMaturityGreaterThanFiveYearsMember 2010-12-31 0001159510 2011-01-01 2011-12-31 0001159510 2010-01-01 2010-12-31 0001159510 2009-01-01 2009-12-31 0001159510 cs:CorporateCenterMember 2010-12-31 0001159510 cs:NoncontrollingInterestsWithoutSignificantEconomicInterestMember 2010-12-31 0001159510 cs:ConsolidatedBankMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember 2011-12-31 0001159510 cs:ConsolidatedBankMember 2008-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:ForwardsAndForwardRateAgreementsContractsMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:ForwardsAndForwardRateAgreementsContractsMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:SwapMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SwapMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:OverTheCounterOptionMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:OverTheCounterOptionMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:FutureMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FutureMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:OptionMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:OptionMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:InterestRateContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:ForwardContractsMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForwardContractsMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:SwapMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SwapMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:OverTheCounterOptionMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:OverTheCounterOptionMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:FutureMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FutureMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:OptionMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:OptionMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForeignExchangeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:ForwardContractsMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForwardContractsMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:OverTheCounterOptionMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:OverTheCounterOptionMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:FutureMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FutureMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:PreciousMetalsContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:ForwardContractsMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForwardContractsMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:SwapMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SwapMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:OverTheCounterOptionMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:OverTheCounterOptionMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:FutureMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FutureMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:OptionMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:OptionMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:EquityIndexContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:CreditRiskContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CreditRiskContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:ForwardContractsMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:ForwardContractsMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:SwapMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SwapMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:OverTheCounterOptionMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:OverTheCounterOptionMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:FutureMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:FutureMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember us-gaap:OptionMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:OptionMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember cs:OtherDerivativeContractMember 2010-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember 2010-12-31 0001159510 cs:HedgingMember us-gaap:DesignatedAsHedgingInstrumentMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember us-gaap:RiskLevelLowMember 2010-01-01 2010-12-31 0001159510 cs:MultiNameInstrumentsMember us-gaap:RiskLevelLowMember 2010-01-01 2010-12-31 0001159510 cs:SingleNameInstrumentsMember us-gaap:RiskLevelHighMember 2010-01-01 2010-12-31 0001159510 cs:MultiNameInstrumentsMember us-gaap:RiskLevelHighMember 2010-01-01 2010-12-31 0001159510 cs:SingleNameInstrumentsMember 2010-01-01 2010-12-31 0001159510 cs:MultiNameInstrumentsMember 2010-01-01 2010-12-31 0001159510 cs:SingleNameInstrumentsMember us-gaap:SovereignDebtMember 2010-01-01 2010-12-31 0001159510 cs:MultiNameInstrumentsMember us-gaap:SovereignDebtMember 2010-01-01 2010-12-31 0001159510 cs:SingleNameInstrumentsMember cs:NonSovereignDebtMember 2010-01-01 2010-12-31 0001159510 cs:MultiNameInstrumentsMember cs:NonSovereignDebtMember 2010-01-01 2010-12-31 0001159510 cs:SingleNameInstrumentsMember us-gaap:RiskLevelHighMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember us-gaap:RiskLevelHighMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember us-gaap:RiskLevelLowMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember us-gaap:RiskLevelLowMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember us-gaap:SovereignDebtMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember us-gaap:SovereignDebtMember 2010-12-31 0001159510 cs:SingleNameInstrumentsMember cs:NonSovereignDebtMember 2010-12-31 0001159510 cs:MultiNameInstrumentsMember cs:NonSovereignDebtMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember 2010-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 cs:EquityIndexRelatedContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 cs:EquityIndexRelatedContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 cs:EquityIndexRelatedContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember 2010-12-31 0001159510 cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesEquityFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesEquityFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesEquityFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesEquityFundsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:PrivateEquitySecuritiesEquityFundsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:HedgeFundsDebtFundsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:HedgeFundsDebtFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:HedgeFundsDebtFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:HedgeFundsDebtFundsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:HedgeFundsDebtFundsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesOtherMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesOtherMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesOtherMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesOtherMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesOtherMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherEquitySecuritiesPrivateEquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherEquitySecuritiesPrivateEquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherEquitySecuritiesPrivateEquitySecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherEquitySecuritiesPrivateEquitySecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherEquitySecuritiesPrivateEquitySecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LifeFinanceInstrumentsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LifeFinanceInstrumentsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LifeFinanceInstrumentsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LifeFinanceInstrumentsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LifeFinanceInstrumentsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:CorporateDebtSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignGovernmentDebtSecuritiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:InterestRateContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:ForeignExchangeContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember cs:EquityIndexRelatedContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember cs:EquityIndexRelatedContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember cs:EquityIndexRelatedContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:CreditRiskContractMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:CreditRiskContractMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:DerivativeMember us-gaap:CreditRiskContractMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtTreasuryDebtOverTwoYearsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtTreasuryDebtOverTwoYearsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtTreasuryDebtOverTwoYearsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtTreasuryDebtOverTwoYearsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtTreasuryDebtOverTwoYearsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtSturcturedNotesOverTwoYearsMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtSturcturedNotesOverTwoYearsMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtSturcturedNotesOverTwoYearsMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtSturcturedNotesOverTwoYearsMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtSturcturedNotesOverTwoYearsMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtNonrecourseLiabilitiesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtNonrecourseLiabilitiesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtNonrecourseLiabilitiesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtNonrecourseLiabilitiesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LongTermDebtNonrecourseLiabilitiesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherLiabilitiesFailedSalesMember us-gaap:FairValueInputsLevel1Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherLiabilitiesFailedSalesMember us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherLiabilitiesFailedSalesMember us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherLiabilitiesFailedSalesMember cs:NettingImpactMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:OtherLiabilitiesFailedSalesMember us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 cs:EquityIndexRelatedContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember us-gaap:TradingAccountAssetsMember 2010-12-31 0001159510 us-gaap:TradingAccountAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:InvestmentsMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LoansAndLeasesReceivableMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:InvestmentsOtherMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LoansAndLeasesReceivableCommercialAndIndustrialMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LoansAndLeasesReceivableFinancialInstitutionsMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:MortgageServicingRightsMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:AssetsOtherMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LoansReceivableHeldForSaleMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:AssetsMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:ForeignExchangeContractMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:TradingLiabilitiesMember cs:EquityIndexRelatedContractMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:CreditRiskContractMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:ShortTermDebtMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:LongTermDebtMember cs:LongTermDebtSturcturedNotesOverTwoYearsMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:LongTermDebtMember cs:LongTermDebtNonrecourseLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LiabilitiesOtherMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LiabilitiesOtherMember cs:OtherLiabilitiesFailedSalesMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 cs:LiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:ResidentialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:CommercialMortgageBackedSecuritiesMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DebtSecuritiesMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember us-gaap:EquitySecuritiesMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 cs:EquityIndexRelatedContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:CreditRiskContractMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:DerivativeMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember cs:OtherInvestmentCategoryMember us-gaap:TradingAccountAssetsMember 2009-12-31 0001159510 us-gaap:TradingAccountAssetsMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:InvestmentsMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LoansAndLeasesReceivableMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:InvestmentsOtherMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LoansAndLeasesReceivableCommercialAndIndustrialMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LoansAndLeasesReceivableFinancialInstitutionsMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:MortgageServicingRightsMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:AssetsOtherMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LoansReceivableHeldForSaleMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:AssetsMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:InterestRateContractMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:ForeignExchangeContractMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:TradingLiabilitiesMember cs:EquityIndexRelatedContractMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:TradingLiabilitiesMember us-gaap:CreditRiskContractMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:ShortTermDebtMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:LongTermDebtMember cs:LongTermDebtSturcturedNotesOverTwoYearsMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:LongTermDebtMember cs:LongTermDebtNonrecourseLiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LiabilitiesOtherMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LiabilitiesOtherMember cs:OtherLiabilitiesFailedSalesMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:LiabilitiesMember us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 us-gaap:FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellMember us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:EstimateOfFairValueFairValueDisclosureMember us-gaap:FairValueMeasurementsNonrecurringMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:FairValueMeasurementsNonrecurringMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:FairValueMeasurementsNonrecurringMember 2010-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember 2010-12-31 0001159510 us-gaap:FairValueMeasurementsRecurringMember 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ComprehensiveIncomeMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2011-01-01 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2011-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2008-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2008-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2008-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2008-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2008-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2008-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ComprehensiveIncomeMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2010-01-01 2010-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2010-01-01 2010-12-31 0001159510 2011-12-31 0001159510 us-gaap:CommonStockMember 2011-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2011-12-31 0001159510 us-gaap:TreasuryStockMember 2011-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2011-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2011-12-31 0001159510 us-gaap:ParentMember 2011-12-31 0001159510 us-gaap:RetainedEarningsMember 2011-12-31 0001159510 us-gaap:CommonStockMember 2011-01-01 2011-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2011-01-01 2011-12-31 0001159510 us-gaap:TreasuryStockMember 2011-01-01 2011-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2011-01-01 2011-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2011-01-01 2011-12-31 0001159510 us-gaap:ParentMember 2011-01-01 2011-12-31 0001159510 us-gaap:RetainedEarningsMember 2011-01-01 2011-12-31 0001159510 us-gaap:ComprehensiveIncomeMember 2011-01-01 2011-12-31 0001159510 us-gaap:RetainedEarningsMember 2009-12-31 0001159510 us-gaap:CommonStockMember 2010-01-01 2010-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2010-01-01 2010-12-31 0001159510 us-gaap:TreasuryStockMember 2010-01-01 2010-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2010-01-01 2010-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2010-01-01 2010-12-31 0001159510 us-gaap:ParentMember 2010-01-01 2010-12-31 0001159510 us-gaap:RetainedEarningsMember 2010-01-01 2010-12-31 0001159510 us-gaap:ComprehensiveIncomeMember 2010-01-01 2010-12-31 0001159510 2008-12-31 0001159510 us-gaap:CommonStockMember 2008-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2008-12-31 0001159510 us-gaap:TreasuryStockMember 2008-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2008-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2008-12-31 0001159510 us-gaap:ParentMember 2008-12-31 0001159510 us-gaap:RetainedEarningsMember 2008-12-31 0001159510 us-gaap:ParentMember 2009-12-31 0001159510 us-gaap:CommonStockMember 2009-01-01 2009-12-31 0001159510 us-gaap:AdditionalPaidInCapitalMember 2009-01-01 2009-12-31 0001159510 us-gaap:TreasuryStockMember 2009-01-01 2009-12-31 0001159510 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2009-01-01 2009-12-31 0001159510 us-gaap:NoncontrollingInterestMember 2009-01-01 2009-12-31 0001159510 us-gaap:ParentMember 2009-01-01 2009-12-31 0001159510 us-gaap:RetainedEarningsMember 2009-01-01 2009-12-31 0001159510 us-gaap:ComprehensiveIncomeMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:NoncontrollingInterestMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ComprehensiveIncomeMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AdditionalPaidInCapitalMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:TreasuryStockMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2009-01-01 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:RetainedEarningsMember 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:ParentMember 2009-12-31 0001159510 cs:ConsolidatedBankMember us-gaap:AccumulatedOtherComprehensiveIncomeMember 2009-12-31 0001159510 cs:PrivateBankingMember 2009-01-01 2009-12-31 0001159510 cs:InvestmentBankingMember 2009-01-01 2009-12-31 0001159510 cs:AssetManagementSegmentMember 2009-01-01 2009-12-31 0001159510 cs:CorporateCenterMember 2009-01-01 2009-12-31 0001159510 cs:NoncontrollingInterestsWithoutSignificantEconomicInterestMember 2009-01-01 2009-12-31 0001159510 cs:PrivateBankingMember 2010-01-01 2010-12-31 0001159510 cs:InvestmentBankingMember 2010-01-01 2010-12-31 0001159510 cs:AssetManagementSegmentMember 2010-01-01 2010-12-31 0001159510 cs:CorporateCenterMember 2010-01-01 2010-12-31 0001159510 cs:NoncontrollingInterestsWithoutSignificantEconomicInterestMember 2010-01-01 2010-12-31 0001159510 cs:PrivateBankingMember 2011-01-01 2011-12-31 0001159510 cs:InvestmentBankingMember 2011-01-01 2011-12-31 0001159510 cs:AssetManagementSegmentMember 2011-01-01 2011-12-31 0001159510 cs:CorporateCenterMember 2011-01-01 2011-12-31 0001159510 cs:NoncontrollingInterestsWithoutSignificantEconomicInterestMember 2011-01-01 2011-12-31 0001159510 cs:PrivateBankingMember 2011-12-31 0001159510 cs:InvestmentBankingMember 2011-12-31 0001159510 cs:AssetManagementSegmentMember 2011-12-31 0001159510 cs:CorporateCenterMember 2011-12-31 0001159510 cs:NoncontrollingInterestsWithoutSignificantEconomicInterestMember 2011-12-31 0001159510 cs:SwitzerlandMember 2009-01-01 2009-12-31 0001159510 cs:EMEAMember 2009-01-01 2009-12-31 0001159510 cs:AmericasMember 2009-01-01 2009-12-31 0001159510 cs:AsiaPacificMember 2009-01-01 2009-12-31 0001159510 cs:SwitzerlandMember 2010-01-01 2010-12-31 0001159510 cs:EMEAMember 2010-01-01 2010-12-31 0001159510 cs:AmericasMember 2010-01-01 2010-12-31 0001159510 cs:AsiaPacificMember 2010-01-01 2010-12-31 0001159510 cs:SwitzerlandMember 2011-01-01 2011-12-31 0001159510 cs:EMEAMember 2011-01-01 2011-12-31 0001159510 cs:AmericasMember 2011-01-01 2011-12-31 0001159510 cs:AsiaPacificMember 2011-01-01 2011-12-31 0001159510 cs:EMEAMember 2010-12-31 0001159510 cs:AmericasMember 2010-12-31 0001159510 cs:AsiaPacificMember 2010-12-31 0001159510 cs:EMEAMember 2011-12-31 0001159510 cs:AmericasMember 2011-12-31 0001159510 cs:AsiaPacificMember 2011-12-31 0001159510 cs:SwitzerlandMember 2011-12-31 0001159510 cs:LendingBusinessMember 2009-01-01 2009-12-31 0001159510 cs:InvestmentAndPortfolioManagementMember 2009-01-01 2009-12-31 0001159510 cs:OtherSecuritiesBusinessMember 2009-01-01 2009-12-31 0001159510 cs:FiduciaryBusinessMember 2009-01-01 2009-12-31 0001159510 cs:UnderwritingMember 2009-01-01 2009-12-31 0001159510 us-gaap:FloorBrokerageMember 2009-01-01 2009-12-31 0001159510 cs:UnderwritingAndBrokerageMember 2009-01-01 2009-12-31 0001159510 cs:OtherServicesMember 2009-01-01 2009-12-31 0001159510 cs:LendingBusinessMember 2010-01-01 2010-12-31 0001159510 cs:InvestmentAndPortfolioManagementMember 2010-01-01 2010-12-31 0001159510 cs:OtherSecuritiesBusinessMember 2010-01-01 2010-12-31 0001159510 cs:FiduciaryBusinessMember 2010-01-01 2010-12-31 0001159510 cs:UnderwritingMember 2010-01-01 2010-12-31 0001159510 us-gaap:FloorBrokerageMember 2010-01-01 2010-12-31 0001159510 cs:UnderwritingAndBrokerageMember 2010-01-01 2010-12-31 0001159510 cs:OtherServicesMember 2010-01-01 2010-12-31 0001159510 cs:LendingBusinessMember 2011-01-01 2011-12-31 0001159510 cs:InvestmentAndPortfolioManagementMember 2011-01-01 2011-12-31 0001159510 cs:OtherSecuritiesBusinessMember 2011-01-01 2011-12-31 0001159510 cs:FiduciaryBusinessMember 2011-01-01 2011-12-31 0001159510 cs:UnderwritingMember 2011-01-01 2011-12-31 0001159510 us-gaap:FloorBrokerageMember 2011-01-01 2011-12-31 0001159510 cs:UnderwritingAndBrokerageMember 2011-01-01 2011-12-31 0001159510 cs:OtherServicesMember 2011-01-01 2011-12-31 0001159510 cs:InterestRateProductsMember 2009-01-01 2009-12-31 0001159510 cs:ForeignExchangeProductsMember 2009-01-01 2009-12-31 0001159510 cs:EquityIndexRelatedProductsMember 2009-01-01 2009-12-31 0001159510 cs:CreditProductsMember 2009-01-01 2009-12-31 0001159510 cs:CommodityEmissionAndEnergyProductsMember 2009-01-01 2009-12-31 0001159510 cs:OtherProductsMember 2009-01-01 2009-12-31 0001159510 cs:InterestRateProductsMember 2010-01-01 2010-12-31 0001159510 cs:ForeignExchangeProductsMember 2010-01-01 2010-12-31 0001159510 cs:EquityIndexRelatedProductsMember 2010-01-01 2010-12-31 0001159510 cs:CreditProductsMember 2010-01-01 2010-12-31 0001159510 cs:CommodityEmissionAndEnergyProductsMember 2010-01-01 2010-12-31 0001159510 cs:OtherProductsMember 2010-01-01 2010-12-31 0001159510 cs:InterestRateProductsMember 2011-01-01 2011-12-31 0001159510 cs:ForeignExchangeProductsMember 2011-01-01 2011-12-31 0001159510 cs:EquityIndexRelatedProductsMember 2011-01-01 2011-12-31 0001159510 cs:CreditProductsMember 2011-01-01 2011-12-31 0001159510 cs:CommodityEmissionAndEnergyProductsMember 2011-01-01 2011-12-31 0001159510 cs:OtherProductsMember 2011-01-01 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember 2011-12-31 0001159510 us-gaap:DerivativeMember 2011-12-31 0001159510 us-gaap:OtherTradingMember 2011-12-31 0001159510 cs:ShortPositionMember 2011-12-31 0001159510 us-gaap:ForeignGovernmentDebtSecuritiesMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember 2011-12-31 0001159510 us-gaap:CollateralizedDebtObligationsMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember 2010-01-01 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember 2010-01-01 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember 2009-01-01 2009-12-31 0001159510 us-gaap:EquitySecuritiesMember 2009-01-01 2009-12-31 0001159510 us-gaap:DebtSecuritiesMember 2011-01-01 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember 2011-01-01 2011-12-31 0001159510 us-gaap:EquityMethodInvestmentsMember 2010-12-31 0001159510 cs:NonmarketableEquitySecuritiesMember 2010-12-31 0001159510 cs:RealEstateHeldForInvestmentMember 2010-12-31 0001159510 cs:LifeFinanceInstrumentsMember 2010-12-31 0001159510 us-gaap:EquityMethodInvestmentsMember 2011-12-31 0001159510 cs:NonmarketableEquitySecuritiesMember 2011-12-31 0001159510 cs:RealEstateHeldForInvestmentMember 2011-12-31 0001159510 cs:LifeFinanceInstrumentsMember 2011-12-31 0001159510 cs:SwissFederalCantonalOrLocalGovernmentalEntitiesMember 2011-12-31 0001159510 us-gaap:BanksTrustAndInsuranceEquitiesMember 2011-12-31 0001159510 us-gaap:IndustrialMiscellaneousAndAllOthersMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember 2011-12-31 0001159510 cs:RealEstateHeldForInvestmentMember 2009-12-31 0001159510 us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:ConsumerLoansMember 2011-12-31 0001159510 cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:NonSwitzerlandMember 2011-12-31 0001159510 cs:ConsumerLoansMember 2011-01-01 2011-12-31 0001159510 cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-01-01 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAAARatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingAARatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingARatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBBRatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBBRatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingBRatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCCRatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCCRatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingCRatingMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:InternalCounterpartyRatingDRatingMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:AgingAnalysisCurrentMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueUpTo30DaysMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue31To60DaysMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDue61To90DaysMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueOver90DaysMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:ConsumerFinanceMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:AgingAnalysisPastDueMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerFinanceMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerFinanceMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerLoansMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerLoansMember 2010-01-01 2010-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:ConsumerLoansMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-01-01 2010-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember 2010-01-01 2010-12-31 0001159510 cs:ImpairedFinancingReceivableMember 2010-01-01 2010-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember us-gaap:MortgageReceivablesMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansCollateralizedBySecuritiesMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerFinanceMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerFinanceMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerFinanceMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerFinanceMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerLoansMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerLoansMember 2011-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:ConsumerLoansMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:ConsumerLoansMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:ConsumerLoansMember 2011-01-01 2011-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:ConsumerLoansMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableRealEstateMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialAndIndustrialMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCommercialFinancialInstitutionsMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableGovernmentAndPublicInstitutionsMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-01-01 2011-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-12-31 0001159510 cs:ImpairedFinancingReceivableMember cs:LoansReceivableCorporateAndInstitutionalLoansMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceMember 2011-01-01 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember 2011-12-31 0001159510 us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceMember 2011-01-01 2011-12-31 0001159510 cs:ImpairedFinancingReceivableMember 2011-12-31 0001159510 cs:ImpairedFinancingReceivableMember 2011-01-01 2011-12-31 0001159510 cs:FixedRateMember us-gaap:ParentCompanyMember us-gaap:SeniorNotesMember 2011-12-31 0001159510 cs:FixedRateMember us-gaap:ParentCompanyMember us-gaap:SubordinatedDebtMember 2011-12-31 0001159510 us-gaap:ParentCompanyMember 2011-12-31 0001159510 cs:FixedRateMember us-gaap:SubsidiariesMember us-gaap:SeniorNotesMember 2011-12-31 0001159510 cs:VariableRateMember us-gaap:SubsidiariesMember us-gaap:SeniorNotesMember 2011-12-31 0001159510 us-gaap:ParentCompanyMember us-gaap:SeniorNotesMember 2011-01-01 2011-12-31 0001159510 us-gaap:ParentCompanyMember us-gaap:SubordinatedDebtMember 2011-01-01 2011-12-31 0001159510 cs:FixedRateMember us-gaap:SubsidiariesMember us-gaap:SubordinatedDebtMember 2011-12-31 0001159510 cs:VariableRateMember us-gaap:SubsidiariesMember us-gaap:SubordinatedDebtMember 2011-12-31 0001159510 us-gaap:SubsidiariesMember 2011-12-31 0001159510 cs:StructuredNotesMember 2011-12-31 0001159510 cs:CreditSuisseGroupFinanceGuernseyLimitedMember 2011-12-31 0001159510 cs:PrivateBankingMember 2009-12-31 0001159510 cs:InvestmentBankingMember 2009-12-31 0001159510 cs:AssetManagementSegmentMember 2009-12-31 0001159510 cs:TradenamesTrademarksMember 2010-12-31 0001159510 us-gaap:CustomerRelationshipsMember 2010-12-31 0001159510 us-gaap:OtherIntangibleAssetsMember 2010-12-31 0001159510 cs:TradenamesTrademarksMember 2011-12-31 0001159510 us-gaap:CustomerRelationshipsMember 2011-12-31 0001159510 us-gaap:OtherIntangibleAssetsMember 2011-12-31 0001159510 us-gaap:OneYearFromBalanceSheetDateMember 2010-12-31 0001159510 us-gaap:MoreThanOneAndWithinTwoYearsFromBalanceSheetDateMember 2010-12-31 0001159510 us-gaap:MoreThanTwoAndWithinThreeYearsFromBalanceSheetDateMember 2010-12-31 0001159510 us-gaap:MoreThanThreeAndWithinFourYearsFromBalanceSheetDateMember 2010-12-31 0001159510 us-gaap:MoreThanFourAndWithinFiveYearsFromBalanceSheetDateMember 2010-12-31 0001159510 us-gaap:MoreThanFiveYearsFromBalanceSheetDateAndThereafterMember 2010-12-31 0001159510 us-gaap:OneYearFromBalanceSheetDateMember 2011-12-31 0001159510 us-gaap:MoreThanOneAndWithinTwoYearsFromBalanceSheetDateMember 2011-12-31 0001159510 us-gaap:MoreThanTwoAndWithinThreeYearsFromBalanceSheetDateMember 2011-12-31 0001159510 us-gaap:MoreThanThreeAndWithinFourYearsFromBalanceSheetDateMember 2011-12-31 0001159510 us-gaap:MoreThanFourAndWithinFiveYearsFromBalanceSheetDateMember 2011-12-31 0001159510 us-gaap:MoreThanFiveYearsFromBalanceSheetDateAndThereafterMember 2011-12-31 0001159510 cs:YorkCapitalManagementMember 2010-12-31 0001159510 cs:YorkCapitalManagementMember 2010-01-01 2010-12-31 0001159510 cs:CrescentHoldingGmbHMember 2010-02-02 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2009-01-01 2009-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2009-01-01 2009-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2009-01-01 2009-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2009-01-01 2009-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2009-01-01 2009-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2008-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2008-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2008-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2008-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2008-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2010-01-01 2010-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2010-01-01 2010-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2010-01-01 2010-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2010-01-01 2010-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2010-01-01 2010-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2011-01-01 2011-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2011-01-01 2011-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2011-01-01 2011-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2011-01-01 2011-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2011-01-01 2011-12-31 0001159510 us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember 2011-12-31 0001159510 us-gaap:AccumulatedTranslationAdjustmentMember 2011-12-31 0001159510 us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember 2011-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeActuarialGainsLossesMember 2011-12-31 0001159510 cs:AccumulatedOtherComprehensiveIncomeNetPriorServiceCreditCostMember 2011-12-31 0001159510 cs:AdjustablePerformancePlanAwardsMember 2010-01-01 2010-12-31 0001159510 cs:CashRetentionAwardsMember 2010-01-01 2010-12-31 0001159510 cs:PartnerAssetFacilityMember 2010-01-01 2010-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2010-01-01 2010-12-31 0001159510 cs:PerformanceIncentivePlanMember 2010-01-01 2010-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2010-01-01 2010-12-31 0001159510 cs:PerformanceIncentivePlan2005Member 2010-01-01 2010-12-31 0001159510 cs:IncentiveShareUnitMember 2010-01-01 2010-12-31 0001159510 cs:ScaledIncentiveShareUnitMember 2010-01-01 2010-12-31 0001159510 cs:OtherCashAwardsMember 2010-01-01 2010-12-31 0001159510 cs:OtherCashAwardsMember 2009-01-01 2009-12-31 0001159510 cs:CashRetentionAwardsMember 2009-01-01 2009-12-31 0001159510 cs:PartnerAssetFacilityMember 2009-01-01 2009-12-31 0001159510 cs:IncentiveShareUnitMember 2009-01-01 2009-12-31 0001159510 cs:PerformanceIncentivePlanMember 2009-01-01 2009-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2009-01-01 2009-12-31 0001159510 cs:AdjustablePerformancePlanAwardsMember 2011-01-01 2011-12-31 0001159510 cs:RestrictedCashAwardMember 2011-01-01 2011-12-31 0001159510 cs:CashRetentionAwardsMember 2011-01-01 2011-12-31 0001159510 cs:PartnerAssetFacilityMember 2011-01-01 2011-12-31 0001159510 cs:OtherCashAwardsMember 2011-01-01 2011-12-31 0001159510 cs:ShareAwardsMember 2011-01-01 2011-12-31 0001159510 cs:ScaledIncentiveShareUnitMember 2011-01-01 2011-12-31 0001159510 cs:IncentiveShareUnitMember 2011-01-01 2011-12-31 0001159510 cs:PerformanceIncentivePlanMember 2011-01-01 2011-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2011-01-01 2011-12-31 0001159510 cs:ShareAwardsMember 2011-12-31 0001159510 cs:AdjustablePerformancePlanAwardsMember 2011-12-31 0001159510 cs:RestrictedCashAwardMember 2011-12-31 0001159510 cs:ScaledIncentiveShareUnitMember 2011-12-31 0001159510 cs:IncentiveShareUnitMember 2011-12-31 0001159510 cs:OtherCashAwardsMember 2011-12-31 0001159510 cs:PerformanceIncentivePlan2005Member 2009-01-01 2009-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2009-01-01 2009-12-31 0001159510 cs:PerformanceIncentivePlan2005Member 2009-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2009-12-31 0001159510 cs:PerformanceIncentivePlan2005Member 2008-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2008-12-31 0001159510 cs:PerformanceIncentivePlan2005Member 2010-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2010-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2011-12-31 0001159510 cs:PerformanceIncentivePlan2006Member 2011-01-01 2011-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2011-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2009-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2008-12-31 0001159510 us-gaap:EmployeeStockOptionMember 2010-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2011-01-01 2011-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2011-12-31 0001159510 us-gaap:DirectorMember 2011-01-01 2011-12-31 0001159510 us-gaap:DirectorMember 2011-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2010-01-01 2010-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2010-12-31 0001159510 us-gaap:DirectorMember 2010-01-01 2010-12-31 0001159510 us-gaap:DirectorMember 2010-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2009-01-01 2009-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2009-12-31 0001159510 us-gaap:DirectorMember 2009-01-01 2009-12-31 0001159510 us-gaap:DirectorMember 2009-12-31 0001159510 us-gaap:ExecutiveOfficerMember 2008-12-31 0001159510 us-gaap:DirectorMember 2008-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2008-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2009-01-01 2009-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2009-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2010-01-01 2010-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2010-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2011-12-31 0001159510 us-gaap:EquityMethodInvesteeMember 2011-01-01 2011-12-31 0001159510 us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2009-01-01 2009-12-31 0001159510 us-gaap:ForeignPensionPlansDefinedBenefitMember 2009-01-01 2009-12-31 0001159510 us-gaap:ForeignPostretirementBenefitPlansDefinedBenefitMember 2009-01-01 2009-12-31 0001159510 us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:ForeignPostretirementBenefitPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:ForeignPostretirementBenefitPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:ForeignPostretirementBenefitPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:ForeignPostretirementBenefitPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2009-12-31 0001159510 us-gaap:ForeignPensionPlansDefinedBenefitMember 2009-12-31 0001159510 us-gaap:ForeignPostretirementBenefitPlansDefinedBenefitMember 2009-12-31 0001159510 cs:UKForeignPensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember 2009-01-01 2009-12-31 0001159510 cs:ProjectedBenefitObligationExceedingAssetsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:ProjectedBenefitObligationExceedingAssetsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:AccumulatedBenefitObligationExceedingAssetsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:AccumulatedBenefitObligationExceedingAssetsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:ProjectedBenefitObligationExceedingAssetsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:ProjectedBenefitObligationExceedingAssetsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:AccumulatedBenefitObligationExceedingAssetsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:CorporateDebtSecuritiesEntityMember 2011-12-31 0001159510 cs:EquitySecuritiesAndOptionsEntityMember 2011-12-31 0001159510 cs:CorporateDebtSecuritiesEntityMember 2010-12-31 0001159510 cs:EquitySecuritiesAndOptionsEntityMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:PrivateEquityMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:PrivateEquityMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:PrivateEquityMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CashAndCashEquivalentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:GovernmentDebtSecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:DebtSecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:EquitySecuritiesMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:PrivateEquityMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:OtherAlternativeInvestmentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel1Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel2Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2009-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2009-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2009-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-12-31 0001159510 us-gaap:CorporateDebtSecuritiesMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 cs:DirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 cs:IndirectRealEstateInvestmentMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 cs:RealEstatePensionAssetMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 cs:PrivateEquityMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:HedgeFundsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 cs:AlternativeInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:OtherInvestmentsMember us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:PensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:DomesticPensionPlansOfForeignEntityDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:FairValueInputsLevel3Member us-gaap:ForeignPensionPlansDefinedBenefitMember 2011-01-01 2011-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2010-01-01 2010-12-31 0001159510 us-gaap:PensionPlansDefinedBenefitMember 2009-01-01 2009-12-31 0001159510 cs:TradingMember cs:ForwardsAndForwardRateAgreementsContractsMember us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:SwapMember us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:OverTheCounterOptionMember us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:FutureMember us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:OptionMember us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:InterestRateContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:ForwardContractsMember us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:SwapMember us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:OverTheCounterOptionMember us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:FutureMember us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:OptionMember us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:ForwardContractsMember cs:PreciousMetalsContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:OverTheCounterOptionMember cs:PreciousMetalsContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:FutureMember cs:PreciousMetalsContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:PreciousMetalsContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:ForwardContractsMember cs:EquityIndexContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:SwapMember cs:EquityIndexContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:OverTheCounterOptionMember cs:EquityIndexContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:FutureMember cs:EquityIndexContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:OptionMember cs:EquityIndexContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:EquityIndexContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:CreditRiskContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:ForwardContractsMember cs:OtherDerivativeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:SwapMember cs:OtherDerivativeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:OverTheCounterOptionMember cs:OtherDerivativeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:FutureMember cs:OtherDerivativeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:OptionMember cs:OtherDerivativeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember cs:OtherDerivativeContractMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:TradingMember us-gaap:NondesignatedMember 2011-12-31 0001159510 cs:HedgingMember cs:ForwardsAndForwardRateAgreementsContractsMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:SwapMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember cs:OverTheCounterOptionMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:FutureMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:OptionMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:InterestRateContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:ForwardContractsMember us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:SwapMember us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember cs:OverTheCounterOptionMember us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:FutureMember us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:OptionMember us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:ForeignExchangeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:ForwardContractsMember cs:PreciousMetalsContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember cs:OverTheCounterOptionMember cs:PreciousMetalsContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:FutureMember cs:PreciousMetalsContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember cs:PreciousMetalsContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:ForwardContractsMember cs:EquityIndexContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:SwapMember cs:EquityIndexContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember cs:OverTheCounterOptionMember cs:EquityIndexContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:FutureMember cs:EquityIndexContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:OptionMember cs:EquityIndexContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember cs:EquityIndexContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:CreditRiskContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:ForwardContractsMember cs:OtherDerivativeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31 0001159510 cs:HedgingMember us-gaap:SwapMember cs:OtherDerivativeContractMember us-gaap:DesignatedAsHedgingInstrumentMember 2011-12-31