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v2.4.1.9

Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Statement of Partners' Capital [Abstract] |  |
Net income | $ 72,163 us-gaap_NetIncomeLoss | $ 61,188 us-gaap_NetIncomeLoss
Other comprehensive income (loss), before tax: |  |
Change in net unrealized gain/loss on securities available for sale during the period | 34,527 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax | 21,431 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
Change in net unrealized gain on securities transferred to held to maturity | (7,887)cfr_OtherComprehensiveIncomeLossTransfersfromAvailableforsaletoHeldtomaturitySecuritiesbeforeTax | (9,198)cfr_OtherComprehensiveIncomeLossTransfersfromAvailableforsaletoHeldtomaturitySecuritiesbeforeTax
Reclassification adjustment for net (gains) losses included in net income | (228)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
Total securities available for sale and transferred securities, Before Tax Amount | 26,412 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax | 12,233 us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax
Defined-benefit post-retirement benefit plans: |  |
Change in the net actuarial gain/loss | 1,749 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax | 672 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
Derivatives: |  |
Reclassification adjustment for gains on interest rate swaps on variable-rate loans included in net income | 0 cfr_OtherComprehensiveIncomeReclassificationAdjustmentForDerivativeInterestRateSwapsOnVariableRateLoansBeforeTax | (9,345)cfr_OtherComprehensiveIncomeReclassificationAdjustmentForDerivativeInterestRateSwapsOnVariableRateLoansBeforeTax
Total other comprehensive income (loss), before tax | 28,161 us-gaap_OtherComprehensiveIncomeLossBeforeTax | 3,560 us-gaap_OtherComprehensiveIncomeLossBeforeTax
Deferred tax expense (benefit) related to other comprehensive income | 9,856 us-gaap_OtherComprehensiveIncomeLossTax | 1,246 us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive income (loss), net of tax | 18,305 us-gaap_OtherComprehensiveIncomeLossNetOfTax | 2,314 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Comprehensive income | $ 90,468 us-gaap_ComprehensiveIncomeNetOfTax | $ 63,502 us-gaap_ComprehensiveIncomeNetOfTax

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831223 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 + Details
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