Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000036966-26-000112-index-headers.html | 2026-05-07 16:14:01 | |
| 0000036966-26-000112-index.html | 2026-05-07 16:14:01 | |
| 0000036966-26-000112.txt | 2026-05-07 16:14:01 | |
 0000036966-26-000112-xbrl.zip | 552073 | 2026-05-07 16:14:01 |
| exhibit31a1q2026.htm | 10225 | 2026-05-07 16:14:01 |
| exhibit31b1q2026.htm | 10129 | 2026-05-07 16:14:01 |
| exhibit32a1q2026.htm | 4681 | 2026-05-07 16:14:01 |
| exhibit32b1q2026.htm | 4636 | 2026-05-07 16:14:01 |
| fhn-20260331.htm | 5329313 | 2026-05-07 16:14:01 |
| fhn-20260331.xsd | 101785 | 2026-05-07 16:14:01 |
| fhn-20260331_cal.xml | 177689 | 2026-05-07 16:14:01 |
| fhn-20260331_def.xml | 691572 | 2026-05-07 16:14:01 |
 fhn-20260331_g1.jpg | 18068 | 2026-05-07 16:14:01 |
 fhn-20260331_g2.jpg | 5201 | 2026-05-07 16:14:01 |
| fhn-20260331_htm.xml | 6379953 | 2026-05-07 16:14:01 |
| fhn-20260331_lab.xml | 1166819 | 2026-05-07 16:14:01 |
| fhn-20260331_pre.xml | 983520 | 2026-05-07 16:14:01 |
| FilingSummary.xml | 65493 | 2026-05-07 16:14:01 |
| MetaLinks.json | 1632415 | 2026-05-07 16:14:01 |
| R1.htm | 65494 | 2026-05-07 16:14:01 |
| R10.htm | 135223 | 2026-05-07 16:14:01 |
| R11.htm | 679721 | 2026-05-07 16:14:01 |
| R12.htm | 149933 | 2026-05-07 16:14:01 |
| R13.htm | 35303 | 2026-05-07 16:14:01 |
| R14.htm | 42993 | 2026-05-07 16:14:01 |
| R15.htm | 38605 | 2026-05-07 16:14:01 |
| R16.htm | 71007 | 2026-05-07 16:14:01 |
| R17.htm | 37646 | 2026-05-07 16:14:01 |
| R18.htm | 13456 | 2026-05-07 16:14:01 |
| R19.htm | 23682 | 2026-05-07 16:14:01 |
| R2.htm | 134706 | 2026-05-07 16:14:01 |
| R20.htm | 219098 | 2026-05-07 16:14:01 |
| R21.htm | 78490 | 2026-05-07 16:14:01 |
| R22.htm | 220721 | 2026-05-07 16:14:01 |
| R23.htm | 64763 | 2026-05-07 16:14:01 |
| R24.htm | 607504 | 2026-05-07 16:14:01 |
| R25.htm | 6111 | 2026-05-07 16:14:01 |
| R26.htm | 8465 | 2026-05-07 16:14:01 |
| R27.htm | 53291 | 2026-05-07 16:14:01 |
| R28.htm | 19113 | 2026-05-07 16:14:01 |
| R29.htm | 134328 | 2026-05-07 16:14:01 |
| R3.htm | 21622 | 2026-05-07 16:14:01 |
| R30.htm | 670215 | 2026-05-07 16:14:01 |
| R31.htm | 144743 | 2026-05-07 16:14:01 |
| R32.htm | 27384 | 2026-05-07 16:14:01 |
| R33.htm | 45938 | 2026-05-07 16:14:01 |
| R34.htm | 38972 | 2026-05-07 16:14:01 |
| R35.htm | 65809 | 2026-05-07 16:14:01 |
| R36.htm | 39512 | 2026-05-07 16:14:01 |
| R37.htm | 17957 | 2026-05-07 16:14:01 |
| R38.htm | 203535 | 2026-05-07 16:14:01 |
| R39.htm | 66658 | 2026-05-07 16:14:01 |
| R4.htm | 164405 | 2026-05-07 16:14:01 |
| R40.htm | 202652 | 2026-05-07 16:14:01 |
| R41.htm | 65909 | 2026-05-07 16:14:01 |
| R42.htm | 590384 | 2026-05-07 16:14:01 |
| R43.htm | 42486 | 2026-05-07 16:14:01 |
| R44.htm | 81432 | 2026-05-07 16:14:01 |
| R45.htm | 18945 | 2026-05-07 16:14:01 |
| R46.htm | 36908 | 2026-05-07 16:14:01 |
| R47.htm | 56751 | 2026-05-07 16:14:01 |
| R48.htm | 38397 | 2026-05-07 16:14:01 |
| R49.htm | 133852 | 2026-05-07 16:14:01 |
| R5.htm | 54080 | 2026-05-07 16:14:01 |
| R50.htm | 133850 | 2026-05-07 16:14:01 |
| R51.htm | 96712 | 2026-05-07 16:14:01 |
| R52.htm | 56088 | 2026-05-07 16:14:01 |
| R53.htm | 35561 | 2026-05-07 16:14:01 |
| R54.htm | 5663 | 2026-05-07 16:14:01 |
| R55.htm | 43776 | 2026-05-07 16:14:01 |
| R56.htm | 41256 | 2026-05-07 16:14:01 |
| R57.htm | 41254 | 2026-05-07 16:14:01 |
| R58.htm | 15290 | 2026-05-07 16:14:01 |
| R59.htm | 11402 | 2026-05-07 16:14:01 |
| R6.htm | 100472 | 2026-05-07 16:14:01 |
| R60.htm | 9301 | 2026-05-07 16:14:01 |
| R61.htm | 16641 | 2026-05-07 16:14:01 |
| R62.htm | 27885 | 2026-05-07 16:14:01 |
| R63.htm | 43118 | 2026-05-07 16:14:01 |
| R64.htm | 47400 | 2026-05-07 16:14:01 |
| R65.htm | 51749 | 2026-05-07 16:14:01 |
| R66.htm | 38360 | 2026-05-07 16:14:01 |
| R67.htm | 72314 | 2026-05-07 16:14:01 |
| R68.htm | 11519 | 2026-05-07 16:14:01 |
| R69.htm | 10592 | 2026-05-07 16:14:01 |
| R7.htm | 15496 | 2026-05-07 16:14:01 |
| R70.htm | 22605 | 2026-05-07 16:14:01 |
| R71.htm | 16889 | 2026-05-07 16:14:01 |
| R72.htm | 3996 | 2026-05-07 16:14:01 |
| R73.htm | 94117 | 2026-05-07 16:14:01 |
| R74.htm | 46221 | 2026-05-07 16:14:01 |
| R75.htm | 48185 | 2026-05-07 16:14:01 |
| R76.htm | 14049 | 2026-05-07 16:14:01 |
| R77.htm | 13178 | 2026-05-07 16:14:01 |
| R78.htm | 72292 | 2026-05-07 16:14:01 |
| R79.htm | 54862 | 2026-05-07 16:14:01 |
| R8.htm | 113232 | 2026-05-07 16:14:01 |
| R80.htm | 24015 | 2026-05-07 16:14:01 |
| R81.htm | 24281 | 2026-05-07 16:14:01 |
| R82.htm | 16583 | 2026-05-07 16:14:01 |
| R83.htm | 34845 | 2026-05-07 16:14:01 |
| R84.htm | 30572 | 2026-05-07 16:14:01 |
| R85.htm | 44206 | 2026-05-07 16:14:01 |
| R86.htm | 41815 | 2026-05-07 16:14:01 |
| R87.htm | 21661 | 2026-05-07 16:14:01 |
| R88.htm | 22575 | 2026-05-07 16:14:01 |
| R89.htm | 31917 | 2026-05-07 16:14:01 |
| R9.htm | 20706 | 2026-05-07 16:14:01 |
| R90.htm | 142533 | 2026-05-07 16:14:01 |
| R91.htm | 44468 | 2026-05-07 16:14:01 |
| R92.htm | 17058 | 2026-05-07 16:14:01 |
| R93.htm | 28528 | 2026-05-07 16:14:01 |
| R94.htm | 12041 | 2026-05-07 16:14:01 |
| R95.htm | 107077 | 2026-05-07 16:14:01 |
| R96.htm | 20659 | 2026-05-07 16:14:01 |
| R97.htm | 9212 | 2026-05-07 16:14:01 |
| R98.htm | 218154 | 2026-05-07 16:14:01 |
| R99.htm | 17819 | 2026-05-07 16:14:01 |
| report.css | 2768 | 2026-05-07 16:14:01 |
| Show.js | 1086 | 2026-05-07 16:14:01 |