XML 30 R87.htm IDEA: XBRL DOCUMENT v2.4.1.9
Balance Sheet Offsetting - Financial Instruments Derivative Assets Liabilities and Resell Agreements Net of Amount Not Offset (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Net Amount Recognized, Derivatives, Financial Assets $ 28,161us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral $ 29,921us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets (19,223)us-gaap_DerivativeCollateralObligationToReturnSecurities (20,436)us-gaap_DerivativeCollateralObligationToReturnSecurities
Gross Amount Not Offset Collateral, Derivatives, Financial Assets (7,443)us-gaap_DerivativeCollateralObligationToReturnCash (6,035)us-gaap_DerivativeCollateralObligationToReturnCash
Net Amount, Derivatives, Financial Assets 1,495us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral 3,450us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
Net Amount Recognized, Resell agreements 9,642us-gaap_SecuritiesBorrowedNotSubjectToMasterNettingArrangement 9,642us-gaap_SecuritiesBorrowedNotSubjectToMasterNettingArrangement
Gross Amounts Not Offset Financial Instruments, Resell Agreements 0us-gaap_SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities 0us-gaap_SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities
Gross Amounts Not Offset Collateral, Resell Agreements, Financial Assets (9,642)us-gaap_DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash (9,642)us-gaap_DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash
Net Amount, Financial Assets, Resell Agreements 0us-gaap_SecuritiesBorrowedAmountOffsetAgainstCollateral 0us-gaap_SecuritiesBorrowedAmountOffsetAgainstCollateral
Net Amount Recognized, Total Financial Assets 37,803cfr_FinancialAssetsDerivativesAndRepurchaseAgreementsNet 39,563cfr_FinancialAssetsDerivativesAndRepurchaseAgreementsNet
Gross Amounts Not Offset Collateral, Financial Assets (17,085)cfr_FinancialAssetsDerivativeAndResellAgreementsCollateralAmountNotOffset (15,677)cfr_FinancialAssetsDerivativeAndResellAgreementsCollateralAmountNotOffset
Net Amount, Financial Assets 1,495cfr_FinancialAssetsDerivativeAssetsAndResellAgreementsNetOfAmountNotOffset 3,450cfr_FinancialAssetsDerivativeAssetsAndResellAgreementsNetOfAmountNotOffset
Net Amount Recognized, Derivatives, Financial Liabilities 55,894us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral 47,898us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities (19,223)us-gaap_DerivativeCollateralRightToReclaimSecurities (20,436)us-gaap_DerivativeCollateralRightToReclaimSecurities
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities (35,308)us-gaap_DerivativeCollateralRightToReclaimCash (26,307)us-gaap_DerivativeCollateralRightToReclaimCash
Net Amount, Derivatives, Financial Liabilities 1,363us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral 1,155us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
Net Amount Recognized, Repurchase Agreements, Financial Liabilities 593,107us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseNotSubjectToMasterNettingArrangement 791,119us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseNotSubjectToMasterNettingArrangement
Gross Amounts Not Offset Financial Instruments, Repurchase Agreements, Financial Liabilities 0us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities 0us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities
Gross Amounts Not Offset Collateral, Repurchase Agreements, Financial Liabilities (593,107)us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash (791,119)us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash
Net Amount, Repurchase Agreements, Financial Liabilities 0us-gaap_DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral 0us-gaap_DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral
Net Amount Recognized, Financial Liabilities 649,001cfr_FinancialLiabilitiesDerivativesAndRepurchaseAgreementsNet 839,017cfr_FinancialLiabilitiesDerivativesAndRepurchaseAgreementsNet
Gross Amounts Not Offset Collateral, Financial Liabilities (628,415)cfr_FinancialLiabilitiesDerivativeAndRepurchaseAgreementsCollateralAmountNotOffset (817,426)cfr_FinancialLiabilitiesDerivativeAndRepurchaseAgreementsCollateralAmountNotOffset
Net Amount, Financial Liabilities 1,363cfr_FinancialInstrumentsDerivativeLiabilitiesAndRepurchaseAgreementsNetOfAmountNotOffset 1,155cfr_FinancialInstrumentsDerivativeLiabilitiesAndRepurchaseAgreementsNetOfAmountNotOffset
Counterparty A [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Net Amount Recognized, Derivatives, Financial Assets 695us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 627us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets (695)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 (627)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Gross Amount Not Offset Collateral, Derivatives, Financial Assets 0us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 0us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Net Amount, Derivatives, Financial Assets 0us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 0us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Net Amount Recognized, Derivatives, Financial Liabilities 20,440us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 18,653us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities (695)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 (627)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities (19,121)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 (17,626)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Net Amount, Derivatives, Financial Liabilities 624us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember		 400us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartyaMember
Counterparty B [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Net Amount Recognized, Derivatives, Financial Assets 18,651us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 17,308us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets (10,671)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 (9,506)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Gross Amount Not Offset Collateral, Derivatives, Financial Assets (6,496)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 (4,925)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Net Amount, Derivatives, Financial Assets 1,484us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 2,877us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Net Amount Recognized, Derivatives, Financial Liabilities 10,671us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 9,506us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities (10,671)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 (9,506)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities 0us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 0us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Net Amount, Derivatives, Financial Liabilities 0us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember		 0us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartybMember
Counterparty C [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Net Amount Recognized, Derivatives, Financial Assets 5,903us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 7,991us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets (5,903)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 (7,539)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Gross Amount Not Offset Collateral, Derivatives, Financial Assets 0us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 0us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Net Amount, Derivatives, Financial Assets 0us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 452us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Net Amount Recognized, Derivatives, Financial Liabilities 6,998us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 7,539us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities (5,903)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 (7,539)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities (1,095)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 0us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Net Amount, Derivatives, Financial Liabilities 0us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember		 0us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_CounterpartycMember
Other Counterparties [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Net Amount Recognized, Derivatives, Financial Assets 2,912us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 3,995us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets (1,954)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 (2,764)us-gaap_DerivativeCollateralObligationToReturnSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Gross Amount Not Offset Collateral, Derivatives, Financial Assets (947)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 (1,110)us-gaap_DerivativeCollateralObligationToReturnCash
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Net Amount, Derivatives, Financial Assets 11us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 121us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Net Amount Recognized, Derivatives, Financial Liabilities 17,785us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 12,200us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Gross Amounts Not Offset Financial Instruments, Total Derivatives, Financial Liabilities (1,954)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 (2,764)us-gaap_DerivativeCollateralRightToReclaimSecurities
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Gross Amounts Not Offset Collateral, Derivatives, Financial Liabilities (15,092)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 (8,681)us-gaap_DerivativeCollateralRightToReclaimCash
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember
Net Amount, Derivatives, Financial Liabilities $ 739us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember		 $ 755us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
/ us-gaap_CounterpartyNameAxis
= cfr_OtherCounterpartiesMember