Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001558370-24-001599-index-headers.html | 2024-02-23 11:54:09 | |
| 0001558370-24-001599-index.html | 2024-02-23 11:54:09 | |
| 0001558370-24-001599.txt | 2024-02-23 11:54:09 | |
 0001558370-24-001599-xbrl.zip | 699376 | 2024-02-23 11:54:09 |
| FilingSummary.xml | 67309 | 2024-02-23 11:54:09 |
| Financial_Report.xlsx | 228168 | 2024-02-23 11:54:09 |
| MetaLinks.json | 1467481 | 2024-02-23 11:54:09 |
| R1.htm | 70385 | 2024-02-23 11:54:09 |
| R10.htm | 48892 | 2024-02-23 11:54:09 |
| R100.htm | 33813 | 2024-02-23 11:54:09 |
| R101.htm | 15220 | 2024-02-23 11:54:09 |
| R102.htm | 8484 | 2024-02-23 11:54:09 |
| R11.htm | 11295 | 2024-02-23 11:54:09 |
| R12.htm | 122382 | 2024-02-23 11:54:09 |
| R13.htm | 2080067 | 2024-02-23 11:54:09 |
| R14.htm | 109271 | 2024-02-23 11:54:09 |
| R15.htm | 87189 | 2024-02-23 11:54:09 |
| R16.htm | 23248 | 2024-02-23 11:54:09 |
| R17.htm | 7907 | 2024-02-23 11:54:09 |
| R18.htm | 67525 | 2024-02-23 11:54:09 |
| R19.htm | 184552 | 2024-02-23 11:54:09 |
| R2.htm | 107877 | 2024-02-23 11:54:09 |
| R20.htm | 5658 | 2024-02-23 11:54:09 |
| R21.htm | 72633 | 2024-02-23 11:54:09 |
| R22.htm | 221030 | 2024-02-23 11:54:09 |
| R23.htm | 166750 | 2024-02-23 11:54:09 |
| R24.htm | 90345 | 2024-02-23 11:54:09 |
| R25.htm | 34219 | 2024-02-23 11:54:09 |
| R26.htm | 64831 | 2024-02-23 11:54:09 |
| R27.htm | 247920 | 2024-02-23 11:54:09 |
| R28.htm | 143112 | 2024-02-23 11:54:09 |
| R29.htm | 571049 | 2024-02-23 11:54:09 |
| R3.htm | 27774 | 2024-02-23 11:54:09 |
| R30.htm | 49218 | 2024-02-23 11:54:09 |
| R31.htm | 120013 | 2024-02-23 11:54:09 |
| R32.htm | 2069757 | 2024-02-23 11:54:09 |
| R33.htm | 104058 | 2024-02-23 11:54:09 |
| R34.htm | 76589 | 2024-02-23 11:54:09 |
| R35.htm | 14704 | 2024-02-23 11:54:09 |
| R36.htm | 67507 | 2024-02-23 11:54:09 |
| R37.htm | 177351 | 2024-02-23 11:54:09 |
| R38.htm | 11248 | 2024-02-23 11:54:09 |
| R39.htm | 64002 | 2024-02-23 11:54:09 |
| R4.htm | 91348 | 2024-02-23 11:54:09 |
| R40.htm | 10392 | 2024-02-23 11:54:09 |
| R41.htm | 33803 | 2024-02-23 11:54:09 |
| R42.htm | 44269 | 2024-02-23 11:54:09 |
| R43.htm | 14221 | 2024-02-23 11:54:09 |
| R44.htm | 46028 | 2024-02-23 11:54:09 |
| R45.htm | 9911 | 2024-02-23 11:54:09 |
| R46.htm | 22792 | 2024-02-23 11:54:09 |
| R47.htm | 33244 | 2024-02-23 11:54:09 |
| R48.htm | 5433 | 2024-02-23 11:54:09 |
| R49.htm | 15644 | 2024-02-23 11:54:09 |
| R5.htm | 50332 | 2024-02-23 11:54:09 |
| R50.htm | 18115 | 2024-02-23 11:54:09 |
| R51.htm | 30212 | 2024-02-23 11:54:09 |
| R52.htm | 29827 | 2024-02-23 11:54:09 |
| R53.htm | 52980 | 2024-02-23 11:54:09 |
| R54.htm | 17019 | 2024-02-23 11:54:09 |
| R55.htm | 32286 | 2024-02-23 11:54:09 |
| R56.htm | 28835 | 2024-02-23 11:54:09 |
| R57.htm | 41437 | 2024-02-23 11:54:09 |
| R58.htm | 11566 | 2024-02-23 11:54:09 |
| R59.htm | 68969 | 2024-02-23 11:54:09 |
| R6.htm | 4572 | 2024-02-23 11:54:09 |
| R60.htm | 43271 | 2024-02-23 11:54:09 |
| R61.htm | 28634 | 2024-02-23 11:54:09 |
| R62.htm | 63510 | 2024-02-23 11:54:09 |
| R63.htm | 21206 | 2024-02-23 11:54:09 |
| R64.htm | 33935 | 2024-02-23 11:54:09 |
| R65.htm | 72519 | 2024-02-23 11:54:09 |
| R66.htm | 30789 | 2024-02-23 11:54:09 |
| R67.htm | 323603 | 2024-02-23 11:54:09 |
| R68.htm | 51043 | 2024-02-23 11:54:09 |
| R69.htm | 41832 | 2024-02-23 11:54:09 |
| R7.htm | 110784 | 2024-02-23 11:54:09 |
| R70.htm | 12069 | 2024-02-23 11:54:09 |
| R71.htm | 42032 | 2024-02-23 11:54:09 |
| R72.htm | 21083 | 2024-02-23 11:54:09 |
| R73.htm | 46994 | 2024-02-23 11:54:09 |
| R74.htm | 50225 | 2024-02-23 11:54:09 |
| R75.htm | 23162 | 2024-02-23 11:54:09 |
| R76.htm | 28125 | 2024-02-23 11:54:09 |
| R77.htm | 49396 | 2024-02-23 11:54:09 |
| R78.htm | 43639 | 2024-02-23 11:54:09 |
| R79.htm | 14214 | 2024-02-23 11:54:09 |
| R8.htm | 204772 | 2024-02-23 11:54:09 |
| R80.htm | 24193 | 2024-02-23 11:54:09 |
| R81.htm | 27765 | 2024-02-23 11:54:09 |
| R82.htm | 30588 | 2024-02-23 11:54:09 |
| R83.htm | 8324 | 2024-02-23 11:54:09 |
| R84.htm | 4100 | 2024-02-23 11:54:09 |
| R85.htm | 33434 | 2024-02-23 11:54:09 |
| R86.htm | 20781 | 2024-02-23 11:54:09 |
| R87.htm | 8555 | 2024-02-23 11:54:09 |
| R88.htm | 76861 | 2024-02-23 11:54:09 |
| R89.htm | 39452 | 2024-02-23 11:54:09 |
| R9.htm | 573169 | 2024-02-23 11:54:09 |
| R90.htm | 14038 | 2024-02-23 11:54:09 |
| R91.htm | 45797 | 2024-02-23 11:54:09 |
| R92.htm | 94182 | 2024-02-23 11:54:09 |
| R93.htm | 27619 | 2024-02-23 11:54:09 |
| R94.htm | 68899 | 2024-02-23 11:54:09 |
| R95.htm | 99057 | 2024-02-23 11:54:09 |
| R96.htm | 7902 | 2024-02-23 11:54:09 |
| R97.htm | 44500 | 2024-02-23 11:54:09 |
| R98.htm | 29250 | 2024-02-23 11:54:09 |
| R99.htm | 12250 | 2024-02-23 11:54:09 |
| report.css | 2768 | 2024-02-23 11:54:09 |
| rli-20231231.xsd | 104306 | 2024-02-23 11:54:09 |
| rli-20231231x10k.htm | 8457631 | 2024-02-23 11:54:09 |
 rli-20231231x10k005.jpg | 47883 | 2024-02-23 11:54:09 |
| rli-20231231x10k_htm.xml | 10506417 | 2024-02-23 11:54:09 |
| rli-20231231xex21d1.htm | 21952 | 2024-02-23 11:54:09 |
| rli-20231231xex23d1.htm | 3582 | 2024-02-23 11:54:09 |
| rli-20231231xex31d1.htm | 9523 | 2024-02-23 11:54:09 |
| rli-20231231xex31d2.htm | 9500 | 2024-02-23 11:54:09 |
| rli-20231231xex32d1.htm | 7535 | 2024-02-23 11:54:09 |
| rli-20231231xex32d2.htm | 7545 | 2024-02-23 11:54:09 |
| rli-20231231xex4d1.htm | 22495 | 2024-02-23 11:54:09 |
| rli-20231231xex97d1.htm | 30919 | 2024-02-23 11:54:09 |
| rli-20231231_cal.xml | 158537 | 2024-02-23 11:54:09 |
| rli-20231231_def.xml | 446892 | 2024-02-23 11:54:09 |
| rli-20231231_lab.xml | 1036087 | 2024-02-23 11:54:09 |
| rli-20231231_pre.xml | 831969 | 2024-02-23 11:54:09 |
| Show.js | 1086 | 2024-02-23 11:54:09 |