Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000798941-26-000015-index-headers.html | 2026-02-24 16:19:36 | |
| 0000798941-26-000015-index.html | 2026-02-24 16:19:36 | |
| 0000798941-26-000015.txt | 2026-02-24 16:19:36 | |
 0000798941-26-000015-xbrl.zip | 960756 | 2026-02-24 16:19:36 |
| fcnca-20251231.htm | 7884635 | 2026-02-24 16:19:36 |
| fcnca-20251231.xsd | 152354 | 2026-02-24 16:19:36 |
| fcnca-20251231_cal.xml | 306340 | 2026-02-24 16:19:36 |
| fcnca-20251231_def.xml | 981845 | 2026-02-24 16:19:36 |
 fcnca-20251231_g1.jpg | 103176 | 2026-02-24 16:19:36 |
| fcnca-20251231_htm.xml | 9049843 | 2026-02-24 16:19:36 |
| fcnca-20251231_lab.xml | 1693340 | 2026-02-24 16:19:36 |
| fcnca-20251231_pre.xml | 1399766 | 2026-02-24 16:19:36 |
| fcnca_exx108xamendedandres.htm | 46670 | 2026-02-24 16:19:36 |
| fcnca_exx19xinsidertrading.htm | 182944 | 2026-02-24 16:19:36 |
| fcnca_exx21xsubsidiariesx1.htm | 7099 | 2026-02-24 16:19:36 |
| fcnca_exx231xkpmgconsentx1.htm | 1985 | 2026-02-24 16:19:36 |
| fcnca_exx24xpowerofattorne.htm | 24351 | 2026-02-24 16:19:36 |
| fcnca_exx311x4q2025ceocert.htm | 10037 | 2026-02-24 16:19:36 |
| fcnca_exx312x4q2025cfocert.htm | 9959 | 2026-02-24 16:19:36 |
| fcnca_exx321x4q2025ceocert.htm | 3218 | 2026-02-24 16:19:36 |
| fcnca_exx322x4q2025cfocert.htm | 3197 | 2026-02-24 16:19:36 |
| fcnca_exx412xdescriptionof.htm | 137011 | 2026-02-24 16:19:36 |
| FilingSummary.xml | 96381 | 2026-02-24 16:19:36 |
 image_0a.jpg | 27573 | 2026-02-24 16:19:36 |
| MetaLinks.json | 2245968 | 2026-02-24 16:19:36 |
| R1.htm | 79462 | 2026-02-24 16:19:36 |
| R10.htm | 135875 | 2026-02-24 16:19:36 |
| R100.htm | 4442 | 2026-02-24 16:19:36 |
| R101.htm | 14619 | 2026-02-24 16:19:36 |
| R102.htm | 16711 | 2026-02-24 16:19:36 |
| R103.htm | 4411 | 2026-02-24 16:19:36 |
| R104.htm | 22193 | 2026-02-24 16:19:36 |
| R105.htm | 41711 | 2026-02-24 16:19:36 |
| R106.htm | 47750 | 2026-02-24 16:19:36 |
| R107.htm | 14807 | 2026-02-24 16:19:36 |
| R108.htm | 87204 | 2026-02-24 16:19:36 |
| R109.htm | 52254 | 2026-02-24 16:19:36 |
| R11.htm | 17705 | 2026-02-24 16:19:36 |
| R110.htm | 19426 | 2026-02-24 16:19:36 |
| R111.htm | 17096 | 2026-02-24 16:19:36 |
| R112.htm | 11939 | 2026-02-24 16:19:36 |
| R113.htm | 15418 | 2026-02-24 16:19:36 |
| R114.htm | 14756 | 2026-02-24 16:19:36 |
| R115.htm | 132105 | 2026-02-24 16:19:36 |
| R116.htm | 43212 | 2026-02-24 16:19:36 |
| R117.htm | 46001 | 2026-02-24 16:19:36 |
| R118.htm | 10843 | 2026-02-24 16:19:36 |
| R119.htm | 18986 | 2026-02-24 16:19:36 |
| R12.htm | 212340 | 2026-02-24 16:19:36 |
| R120.htm | 36516 | 2026-02-24 16:19:36 |
| R121.htm | 124659 | 2026-02-24 16:19:36 |
| R122.htm | 17019 | 2026-02-24 16:19:36 |
| R123.htm | 48457 | 2026-02-24 16:19:36 |
| R124.htm | 57389 | 2026-02-24 16:19:36 |
| R125.htm | 24765 | 2026-02-24 16:19:36 |
| R126.htm | 35975 | 2026-02-24 16:19:36 |
| R127.htm | 46895 | 2026-02-24 16:19:36 |
| R128.htm | 25740 | 2026-02-24 16:19:36 |
| R129.htm | 41752 | 2026-02-24 16:19:36 |
| R13.htm | 14915 | 2026-02-24 16:19:36 |
| R130.htm | 12752 | 2026-02-24 16:19:36 |
| R131.htm | 55728 | 2026-02-24 16:19:36 |
| R132.htm | 29250 | 2026-02-24 16:19:36 |
| R133.htm | 77937 | 2026-02-24 16:19:36 |
| R134.htm | 30952 | 2026-02-24 16:19:36 |
| R135.htm | 39687 | 2026-02-24 16:19:36 |
| R136.htm | 26755 | 2026-02-24 16:19:36 |
| R137.htm | 27409 | 2026-02-24 16:19:36 |
| R138.htm | 90499 | 2026-02-24 16:19:36 |
| R139.htm | 54044 | 2026-02-24 16:19:36 |
| R14.htm | 1130374 | 2026-02-24 16:19:36 |
| R140.htm | 6921 | 2026-02-24 16:19:36 |
| R141.htm | 21218 | 2026-02-24 16:19:36 |
| R142.htm | 11170 | 2026-02-24 16:19:36 |
| R143.htm | 14310 | 2026-02-24 16:19:36 |
| R144.htm | 85002 | 2026-02-24 16:19:36 |
| R145.htm | 17066 | 2026-02-24 16:19:36 |
| R146.htm | 11701 | 2026-02-24 16:19:36 |
| R147.htm | 20357 | 2026-02-24 16:19:36 |
| R148.htm | 13467 | 2026-02-24 16:19:36 |
| R149.htm | 111148 | 2026-02-24 16:19:36 |
| R15.htm | 74540 | 2026-02-24 16:19:36 |
| R150.htm | 13696 | 2026-02-24 16:19:36 |
| R151.htm | 13605 | 2026-02-24 16:19:36 |
| R152.htm | 75606 | 2026-02-24 16:19:36 |
| R153.htm | 70744 | 2026-02-24 16:19:36 |
| R154.htm | 97249 | 2026-02-24 16:19:36 |
| R16.htm | 247671 | 2026-02-24 16:19:36 |
| R17.htm | 17430 | 2026-02-24 16:19:36 |
| R18.htm | 26051 | 2026-02-24 16:19:36 |
| R19.htm | 32807 | 2026-02-24 16:19:36 |
| R2.htm | 7776 | 2026-02-24 16:19:36 |
| R20.htm | 21178 | 2026-02-24 16:19:36 |
| R21.htm | 47190 | 2026-02-24 16:19:36 |
| R22.htm | 154662 | 2026-02-24 16:19:36 |
| R23.htm | 340384 | 2026-02-24 16:19:36 |
| R24.htm | 56490 | 2026-02-24 16:19:36 |
| R25.htm | 119570 | 2026-02-24 16:19:36 |
| R26.htm | 48817 | 2026-02-24 16:19:36 |
| R27.htm | 25829 | 2026-02-24 16:19:36 |
| R28.htm | 162442 | 2026-02-24 16:19:36 |
| R29.htm | 190862 | 2026-02-24 16:19:36 |
| R3.htm | 124684 | 2026-02-24 16:19:36 |
| R30.htm | 223578 | 2026-02-24 16:19:36 |
| R31.htm | 26369 | 2026-02-24 16:19:36 |
| R32.htm | 102548 | 2026-02-24 16:19:36 |
| R33.htm | 8465 | 2026-02-24 16:19:36 |
| R34.htm | 4371 | 2026-02-24 16:19:36 |
| R35.htm | 44955 | 2026-02-24 16:19:36 |
| R36.htm | 200493 | 2026-02-24 16:19:36 |
| R37.htm | 17969 | 2026-02-24 16:19:36 |
| R38.htm | 210350 | 2026-02-24 16:19:36 |
| R39.htm | 17134 | 2026-02-24 16:19:36 |
| R4.htm | 27494 | 2026-02-24 16:19:36 |
| R40.htm | 1127077 | 2026-02-24 16:19:36 |
| R41.htm | 71839 | 2026-02-24 16:19:36 |
| R42.htm | 154848 | 2026-02-24 16:19:36 |
| R43.htm | 15484 | 2026-02-24 16:19:36 |
| R44.htm | 26409 | 2026-02-24 16:19:36 |
| R45.htm | 34609 | 2026-02-24 16:19:36 |
| R46.htm | 23682 | 2026-02-24 16:19:36 |
| R47.htm | 40389 | 2026-02-24 16:19:36 |
| R48.htm | 240687 | 2026-02-24 16:19:36 |
| R49.htm | 358770 | 2026-02-24 16:19:36 |
| R5.htm | 169379 | 2026-02-24 16:19:36 |
| R50.htm | 49261 | 2026-02-24 16:19:36 |
| R51.htm | 118430 | 2026-02-24 16:19:36 |
| R52.htm | 42613 | 2026-02-24 16:19:36 |
| R53.htm | 25261 | 2026-02-24 16:19:36 |
| R54.htm | 162140 | 2026-02-24 16:19:36 |
| R55.htm | 185877 | 2026-02-24 16:19:36 |
| R56.htm | 203437 | 2026-02-24 16:19:36 |
| R57.htm | 13705 | 2026-02-24 16:19:36 |
| R58.htm | 107207 | 2026-02-24 16:19:36 |
| R59.htm | 38653 | 2026-02-24 16:19:36 |
| R6.htm | 37889 | 2026-02-24 16:19:36 |
| R60.htm | 53371 | 2026-02-24 16:19:36 |
| R61.htm | 74445 | 2026-02-24 16:19:36 |
| R62.htm | 65638 | 2026-02-24 16:19:36 |
| R63.htm | 70759 | 2026-02-24 16:19:36 |
| R64.htm | 10090 | 2026-02-24 16:19:36 |
| R65.htm | 13626 | 2026-02-24 16:19:36 |
| R66.htm | 39097 | 2026-02-24 16:19:36 |
| R67.htm | 20753 | 2026-02-24 16:19:36 |
| R68.htm | 8383 | 2026-02-24 16:19:36 |
| R69.htm | 31279 | 2026-02-24 16:19:36 |
| R7.htm | 62947 | 2026-02-24 16:19:36 |
| R70.htm | 33503 | 2026-02-24 16:19:36 |
| R71.htm | 12298 | 2026-02-24 16:19:36 |
| R72.htm | 136912 | 2026-02-24 16:19:36 |
| R73.htm | 276529 | 2026-02-24 16:19:36 |
| R74.htm | 83729 | 2026-02-24 16:19:36 |
| R75.htm | 130162 | 2026-02-24 16:19:36 |
| R76.htm | 43086 | 2026-02-24 16:19:36 |
| R77.htm | 94933 | 2026-02-24 16:19:36 |
| R78.htm | 37905 | 2026-02-24 16:19:36 |
| R79.htm | 28701 | 2026-02-24 16:19:36 |
| R8.htm | 8335 | 2026-02-24 16:19:36 |
| R80.htm | 7069 | 2026-02-24 16:19:36 |
| R81.htm | 19155 | 2026-02-24 16:19:36 |
| R82.htm | 11806 | 2026-02-24 16:19:36 |
| R83.htm | 35118 | 2026-02-24 16:19:36 |
| R84.htm | 15982 | 2026-02-24 16:19:36 |
| R85.htm | 13827 | 2026-02-24 16:19:36 |
| R86.htm | 68384 | 2026-02-24 16:19:36 |
| R87.htm | 15965 | 2026-02-24 16:19:36 |
| R88.htm | 13958 | 2026-02-24 16:19:36 |
| R89.htm | 17748 | 2026-02-24 16:19:36 |
| R9.htm | 158224 | 2026-02-24 16:19:36 |
| R90.htm | 16236 | 2026-02-24 16:19:36 |
| R91.htm | 21932 | 2026-02-24 16:19:36 |
| R92.htm | 24397 | 2026-02-24 16:19:36 |
| R93.htm | 13839 | 2026-02-24 16:19:36 |
| R94.htm | 11838 | 2026-02-24 16:19:36 |
| R95.htm | 11812 | 2026-02-24 16:19:36 |
| R96.htm | 13330 | 2026-02-24 16:19:36 |
| R97.htm | 23909 | 2026-02-24 16:19:36 |
| R98.htm | 40350 | 2026-02-24 16:19:36 |
| R99.htm | 25172 | 2026-02-24 16:19:36 |
| report.css | 2768 | 2026-02-24 16:19:36 |
| Show.js | 1086 | 2026-02-24 16:19:36 |