XML 151 R135.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Fair Value Measurements (Foreclosed Assets Remeasured and Reported at Fair Value) (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed Assets Remeasured at Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement | $ 0 | $ 0 | $ 1,348
Foreclosed Assets Remeasured at Initial Recognition Charge Offs Recognized In Allowance For Loan Losses | 0 | 0 | (76)
Fair Value of Foreclosed Assets Remeasured at Initial Recognition | 0 | 0 | 1,272
Foreclosed Assets Remeasured Subsequent to Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement | 14 | 328 | 0
Foreclosed Assets Remeasured Subsequent to initial Recognition Write Downs Included In Other Non Interest Expense | (14) | (231) | 0
Fair Value of Foreclosed Assets Remeasured Subsequent to Initial Recognition | $ 0 | $ 97 | $ 0

X
- Definition Fair Value of Foreclosed Assets Remeasured Subsequent to Initial Recognition + References No definition available. + Details
Name: | cfr_FairValueOfForeclosedAssetsRemeasuredSubsequentToInitialRecognition
Namespace Prefix: | cfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair Value of Foreclosed Assets Remeasured at Initial Recognition + References No definition available. + Details
Name: | cfr_FairValueofForeclosedAssetsRemeasuredatInitialRecognition
Namespace Prefix: | cfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Foreclosed Assets Remeasured Subsequent to Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement + References No definition available. + Details
Name: | cfr_ForeclosedAssetsRemeasuredSubsequenttoInitialRecognitionCarryingValueOfForeclosedAssetsPriorToRemeasurement
Namespace Prefix: | cfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Foreclosed Assets Remeasured Subsequent to initial recognition Write-downs included in other non-interest expense + References No definition available. + Details
Name: | cfr_ForeclosedAssetsRemeasuredSubsequenttoinitialRecognitionWriteDownsIncludedInOtherNonInterestExpense
Namespace Prefix: | cfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Foreclosed Assets Remeasured at Initial Recognition Carrying Value Of Foreclosed Assets Prior To Remeasurement + References No definition available. + Details
Name: | cfr_ForeclosedAssetsRemeasuredatInitialRecognitionCarryingValueOfForeclosedAssetsPriorToRemeasurement
Namespace Prefix: | cfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Foreclosed Assets Remeasured at Initial Recognition Charge Offs Recognized In Allowance For Loan Losses + References No definition available. + Details
Name: | cfr_ForeclosedAssetsRemeasuredatInitialRecognitionChargeOffsRecognizedInAllowanceForLoanLosses
Namespace Prefix: | cfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration