Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000021175-25-000097-index-headers.html | 2025-11-03 06:34:52 | |
| 0000021175-25-000097-index.html | 2025-11-03 06:34:52 | |
| 0000021175-25-000097.txt | 2025-11-03 06:34:52 | |
 0000021175-25-000097-xbrl.zip | 325347 | 2025-11-03 06:34:52 |
| cna-20250930.htm | 2942092 | 2025-11-03 06:34:52 |
| cna-20250930.xsd | 69648 | 2025-11-03 06:34:52 |
| cna-20250930_cal.xml | 138735 | 2025-11-03 06:34:52 |
| cna-20250930_def.xml | 343956 | 2025-11-03 06:34:52 |
| cna-20250930_htm.xml | 3790682 | 2025-11-03 06:34:52 |
| cna-20250930_lab.xml | 820536 | 2025-11-03 06:34:52 |
| cna-20250930_pre.xml | 594235 | 2025-11-03 06:34:52 |
| FilingSummary.xml | 47141 | 2025-11-03 06:34:52 |
| MetaLinks.json | 1104342 | 2025-11-03 06:34:52 |
| q32025cnaex311.htm | 12383 | 2025-11-03 06:34:52 |
| q32025cnaex312.htm | 12261 | 2025-11-03 06:34:52 |
| q32025cnaex321.htm | 7087 | 2025-11-03 06:34:52 |
| q32025cnaex322.htm | 7057 | 2025-11-03 06:34:52 |
| R1.htm | 55195 | 2025-11-03 06:34:52 |
| R10.htm | 11091 | 2025-11-03 06:34:52 |
| R11.htm | 29756 | 2025-11-03 06:34:52 |
| R12.htm | 365480 | 2025-11-03 06:34:52 |
| R13.htm | 277139 | 2025-11-03 06:34:52 |
| R14.htm | 108081 | 2025-11-03 06:34:52 |
| R15.htm | 62788 | 2025-11-03 06:34:52 |
| R16.htm | 5944 | 2025-11-03 06:34:52 |
| R17.htm | 36121 | 2025-11-03 06:34:52 |
| R18.htm | 96931 | 2025-11-03 06:34:52 |
| R19.htm | 451144 | 2025-11-03 06:34:52 |
| R2.htm | 105049 | 2025-11-03 06:34:52 |
| R20.htm | 8481 | 2025-11-03 06:34:52 |
| R21.htm | 8465 | 2025-11-03 06:34:52 |
| R22.htm | 16117 | 2025-11-03 06:34:52 |
| R23.htm | 28060 | 2025-11-03 06:34:52 |
| R24.htm | 375460 | 2025-11-03 06:34:52 |
| R25.htm | 272210 | 2025-11-03 06:34:52 |
| R26.htm | 96291 | 2025-11-03 06:34:52 |
| R27.htm | 57426 | 2025-11-03 06:34:52 |
| R28.htm | 32530 | 2025-11-03 06:34:52 |
| R29.htm | 97930 | 2025-11-03 06:34:52 |
| R3.htm | 4661 | 2025-11-03 06:34:52 |
| R30.htm | 443236 | 2025-11-03 06:34:52 |
| R31.htm | 35986 | 2025-11-03 06:34:52 |
| R32.htm | 48149 | 2025-11-03 06:34:52 |
| R33.htm | 7337 | 2025-11-03 06:34:52 |
| R34.htm | 33451 | 2025-11-03 06:34:52 |
| R35.htm | 19880 | 2025-11-03 06:34:52 |
| R36.htm | 23147 | 2025-11-03 06:34:52 |
| R37.htm | 13356 | 2025-11-03 06:34:52 |
| R38.htm | 69924 | 2025-11-03 06:34:52 |
| R39.htm | 53952 | 2025-11-03 06:34:52 |
| R4.htm | 43373 | 2025-11-03 06:34:52 |
| R40.htm | 25866 | 2025-11-03 06:34:52 |
| R41.htm | 40009 | 2025-11-03 06:34:52 |
| R42.htm | 26612 | 2025-11-03 06:34:52 |
| R43.htm | 56302 | 2025-11-03 06:34:52 |
| R44.htm | 51283 | 2025-11-03 06:34:52 |
| R45.htm | 80556 | 2025-11-03 06:34:52 |
| R46.htm | 4176 | 2025-11-03 06:34:52 |
| R47.htm | 19875 | 2025-11-03 06:34:52 |
| R48.htm | 27103 | 2025-11-03 06:34:52 |
| R49.htm | 30633 | 2025-11-03 06:34:52 |
| R5.htm | 129622 | 2025-11-03 06:34:52 |
| R50.htm | 16694 | 2025-11-03 06:34:52 |
| R51.htm | 15544 | 2025-11-03 06:34:52 |
| R52.htm | 34860 | 2025-11-03 06:34:52 |
| R53.htm | 13624 | 2025-11-03 06:34:52 |
| R54.htm | 11749 | 2025-11-03 06:34:52 |
| R55.htm | 13477 | 2025-11-03 06:34:52 |
| R56.htm | 64181 | 2025-11-03 06:34:52 |
| R57.htm | 7730 | 2025-11-03 06:34:52 |
| R58.htm | 7224 | 2025-11-03 06:34:52 |
| R59.htm | 7081 | 2025-11-03 06:34:52 |
| R6.htm | 38188 | 2025-11-03 06:34:52 |
| R60.htm | 6030 | 2025-11-03 06:34:52 |
| R61.htm | 29708 | 2025-11-03 06:34:52 |
| R62.htm | 18894 | 2025-11-03 06:34:52 |
| R63.htm | 52496 | 2025-11-03 06:34:52 |
| R64.htm | 8551 | 2025-11-03 06:34:52 |
| R65.htm | 116257 | 2025-11-03 06:34:52 |
| R66.htm | 67294 | 2025-11-03 06:34:52 |
| R67.htm | 19600 | 2025-11-03 06:34:52 |
| R68.htm | 54146 | 2025-11-03 06:34:52 |
| R69.htm | 7879 | 2025-11-03 06:34:52 |
| R7.htm | 103483 | 2025-11-03 06:34:52 |
| R70.htm | 15913 | 2025-11-03 06:34:52 |
| R8.htm | 50116 | 2025-11-03 06:34:52 |
| R9.htm | 4768 | 2025-11-03 06:34:52 |
| report.css | 2767 | 2025-11-03 06:34:52 |
| Show.js | 1085 | 2025-11-03 06:34:52 |