XML 79 R77.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Derivative Financial Instruments - Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding (Detail) | Sep. 30, 2013
--- | ---
Weighted Average Interest Rate Paid [Member] |
Weighted Average Discount Rate [Line Items] |
Fair value hedge loan/lease interest rate swaps | 2.73%
Cash flow hedge interest rate swaps on junior subordinated deferrable interest debentures | 5.47%
Weighted Average Interest Rate Paid [Member] | Financial Institution Counterparties [Member] |
Weighted Average Discount Rate [Line Items] |
Non-hedging interest rate swaps | 4.36%
Weighted Average Interest Rate Paid [Member] | Customer Counterparties [Member] |
Weighted Average Discount Rate [Line Items] |
Non-hedging interest rate swaps | 1.81%
Weighted-Average Interest Rate Received [Member] |
Weighted Average Discount Rate [Line Items] |
Fair value hedge loan/lease interest rate swaps | 0.18%
Cash flow hedge interest rate swaps on junior subordinated deferrable interest debentures | 1.81%
Weighted-Average Interest Rate Received [Member] | Financial Institution Counterparties [Member] |
Weighted Average Discount Rate [Line Items] |
Non-hedging interest rate swaps | 1.81%
Weighted-Average Interest Rate Received [Member] | Customer Counterparties [Member] |
Weighted Average Discount Rate [Line Items] |
Non-hedging interest rate swaps | 4.36%

X
- Definition Cash flow hedge interest rate swaps on junior subordinated deferrable interest debentures + References No definition available. + Details
Name: | cfr_CashFlowHedgeInterestRateSwapsOnJuniorSubordinatedDeferrableInterestDebentures
Namespace Prefix: | cfr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair Value Hedge Loan Lease Interest Rate Swaps + References No definition available. + Details
Name: | cfr_FairValueHedgeLoanLeaseInterestRateSwaps
Namespace Prefix: | cfr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Non-hedging interest rate swaps + References No definition available. + Details
Name: | cfr_NonHedgingInterestRateSwaps
Namespace Prefix: | cfr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Non-hedging interest rate swaps (2) + References No definition available. + Details
Name: | cfr_NonHedgingInterestRateSwaps2
Namespace Prefix: | cfr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_WeightedAverageDiscountRateLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration