XML 46 R33.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Commitments and Contingencies (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract] |
Financial Instruments with Off-Balance-Sheet Risk | Financial instruments with off-balance-sheet risk were as follows:
| March 31, 2024 |  | December 31, 2023
Commitments to extend credit | $ | 12,027,630 |  |  | $ | 12,195,073 |
Standby letters of credit | 416,084 |  |  | 438,635 |
Deferred standby letter of credit fees | 2,750 |  |  | 2,912 |
Commitments, Off-Balance-Sheet, Allowance for Credit Losses [Table Text Block] | The following table details activity in the allowance for credit losses on off-balance-sheet credit exposures.
|  |  | Three Months Ended March 31,
|  |  |  |  | 2024 |  | 2023
Beginning balance |  |  |  |  | $ | 51,751 |  |  | $ | 58,593 |
Credit loss expense (benefit) |  |  |  |  | 2,000 |  |  | (3,675) |
Ending balance |  |  |  |  | $ | 53,751 |  |  | $ | 54,918 |
Lease Commitments, Components of Lease Expense [Table Text Block] | We lease certain office facilities and office equipment under operating leases. The components of total lease expense were as follows:
|  |  | Three Months Ended March 31,
|  |  |  |  | 2024 |  | 2023
Amortization of lease right-of-use assets |  |  |  |  | $ | 8,790 |  |  | $ | 8,765 |
Short-term lease expense |  |  |  |  | 325 |  |  | 409 |
Non-lease components (including taxes, insurance, common maintenance, etc.) |  |  |  |  | 3,549 |  |  | 3,381 |
Total |  |  |  |  | $ | 12,664 |  |  | $ | 12,555 |

X
- Definition [Table Text Block] for Commitments, Off-Balance-Sheet, Allowance for Credit Losses [Table] + References No definition available. + Details
Name: | cfr_CommitmentsOffBalanceSheetAllowanceforCreditLossesTableTextBlock
Namespace Prefix: | cfr_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Table Text Block] for Lease Commitments, Components of Lease Expense [Table] + References No definition available. + Details
Name: | cfr_LeaseCommitmentsComponentsofLeaseExpenseTableTextBlock
Namespace Prefix: | cfr_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-11 + Details
Name: | us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration