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| 0000039263-26-000039-index.html | 2026-06-26 11:27:25 | |
| 0000039263-26-000039.txt | 2026-06-26 11:27:25 | |
 0000039263-26-000039-xbrl.zip | 63226 | 2026-06-26 11:27:25 |
| cfr-20260624.htm | 202061 | 2026-06-26 11:27:25 |
| cfr-20260624.xsd | 25257 | 2026-06-26 11:27:25 |
| cfr-20260624_def.xml | 147339 | 2026-06-26 11:27:25 |
 cfr-20260624_g1.jpg | 7839 | 2026-06-26 11:27:25 |
| cfr-20260624_htm.xml | 127186 | 2026-06-26 11:27:25 |
| cfr-20260624_lab.xml | 171022 | 2026-06-26 11:27:25 |
| cfr-20260624_pre.xml | 157505 | 2026-06-26 11:27:25 |
| exhibit231consentindepende.htm | 2349 | 2026-06-26 11:27:25 |
| exhibit321section1350certi.htm | 4155 | 2026-06-26 11:27:25 |
| FilingSummary.xml | 12812 | 2026-06-26 11:27:25 |
| MetaLinks.json | 191856 | 2026-06-26 11:27:25 |
| R1.htm | 9154 | 2026-06-26 11:27:25 |
| R10.htm | 24738 | 2026-06-26 11:27:25 |
| R11.htm | 20278 | 2026-06-26 11:27:25 |
| R12.htm | 20279 | 2026-06-26 11:27:25 |
| R13.htm | 20995 | 2026-06-26 11:27:25 |
| R14.htm | 16836 | 2026-06-26 11:27:25 |
| R15.htm | 29104 | 2026-06-26 11:27:25 |
| R16.htm | 7918 | 2026-06-26 11:27:25 |
| R17.htm | 25943 | 2026-06-26 11:27:25 |
| R18.htm | 104973 | 2026-06-26 11:27:25 |
| R2.htm | 30451 | 2026-06-26 11:27:25 |
| R3.htm | 41073 | 2026-06-26 11:27:25 |
| R4.htm | 10693 | 2026-06-26 11:27:25 |
| R5.htm | 15160 | 2026-06-26 11:27:25 |
| R6.htm | 20591 | 2026-06-26 11:27:25 |
| R7.htm | 8531 | 2026-06-26 11:27:25 |
| R8.htm | 9341 | 2026-06-26 11:27:25 |
| R9.htm | 8144 | 2026-06-26 11:27:25 |
| report.css | 2767 | 2026-06-26 11:27:25 |
| Show.js | 1085 | 2026-06-26 11:27:25 |