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RESERVE FOR LOSSES AND LOSS EXPENSES - Summary of Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance (Details) $ in Thousands | Dec. 31, 2022 USD ($) claim | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
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Insurance | Property |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 3,940,350 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 239,662 | $ 239,749 | $ 239,742 | $ 240,025 | $ 241,593 | $ 231,357 | $ 232,389 | $ 236,276 | $ 263,335 | $ 269,749
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 608 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 3,455 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 252,842 | 252,918 | 255,612 | 259,507 | 261,928 | 262,345 | 276,777 | 287,038 | 288,993 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 846 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,128 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 180,614 | 178,338 | 188,334 | 186,403 | 189,724 | 191,987 | 199,738 | 207,460 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 322 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,168 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 258,432 | 259,012 | 258,563 | 264,244 | 278,599 | 286,359 | 263,277 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,763 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,589 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 674,955 | 674,642 | 679,272 | 688,738 | 696,217 | 790,282 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 16,736 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 10,037 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 619,470 | 620,745 | 628,383 | 648,546 | 601,920 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 8,696 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,586 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 356,278 | 344,865 | 354,498 | 365,895 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 3,174 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,470 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 574,412 | 625,403 | 639,024 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 45,011 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 12,282 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 371,684 | 375,903 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 22,282 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,562 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 412,001 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 168,886 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 5,412 |  |  |  |  |  |  |  |  |
Insurance | Accident and health |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 777,271 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 35,353 | 33,916 | 32,794 | 33,026 | 35,245 | 35,045 | 34,383 | 34,413 | 34,160 | 38,763
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,220 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 49,549 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 61,479 | 62,846 | 63,645 | 64,420 | 63,685 | 64,057 | 65,588 | 66,137 | 70,803 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 656 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 58,081 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 62,958 | 62,298 | 62,966 | 63,278 | 62,720 | 64,511 | 67,991 | 69,643 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,495 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 44,138 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 85,738 | 85,938 | 84,921 | 85,247 | 84,118 | 83,697 | 84,024 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,597 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 87,001 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 114,738 | 114,855 | 114,782 | 116,690 | 118,736 | 112,583 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 160 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 688,000 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 111,865 | 110,861 | 112,819 | 113,711 | 109,900 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 170 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 738,139 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 68,074 | 64,586 | 74,084 | 72,971 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ (482) |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 668,008 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 66,975 | 63,476 | 69,316 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,475 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 713,198 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 71,672 | 69,349 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,695 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 418,260 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 98,419 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 46,362 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 227,274 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 1,717,347 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 94,037 | 95,315 | 94,661 | 95,565 | 95,389 | 95,998 | 110,382 | 109,330 | 115,403 | 94,098
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 618 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 3,401 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 52,696 | 53,409 | 56,132 | 64,264 | 66,228 | 64,952 | 71,356 | 66,912 | 79,979 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 922 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 3,550 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 146,338 | 146,411 | 146,923 | 141,433 | 154,835 | 162,516 | 166,614 | 187,548 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,083 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,292 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 101,331 | 100,428 | 101,293 | 101,880 | 109,445 | 111,852 | 115,466 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,236 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,821 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 219,134 | 219,372 | 227,315 | 229,379 | 228,267 | 260,951 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 13,765 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,537 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 234,514 | 241,156 | 247,886 | 261,748 | 236,572 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 22,650 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,699 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 221,420 | 208,657 | 205,829 | 211,337 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 9,334 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,566 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 161,972 | 178,479 | 206,992 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 24,006 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,741 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 221,510 | 240,192 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 68,116 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,354 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 264,395 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 179,643 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 5,240 |  |  |  |  |  |  |  |  |
Insurance | Cyber |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 675,374 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 35,564 | 32,557 | 32,591 | 33,537 | 34,399 | 42,557 | 47,310 | 65,870 | 66,409 | 67,211
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 5,447 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,335 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 39,832 | 43,576 | 39,516 | 42,887 | 47,342 | 57,876 | 69,955 | 69,690 | 70,557 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,733 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,114 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 49,795 | 52,526 | 50,758 | 50,357 | 51,250 | 63,066 | 63,595 | 65,231 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 5,857 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,337 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 27,873 | 29,929 | 37,322 | 40,266 | 58,261 | 56,565 | 58,741 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 4,478 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,532 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 49,327 | 51,050 | 52,058 | 56,910 | 50,794 | 53,187 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 6,722 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,623 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 27,332 | 31,009 | 34,151 | 32,155 | 33,429 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 5,745 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,966 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 81,402 | 81,757 | 58,702 | 54,671 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 16,951 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,796 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 102,606 | 105,868 | 113,744 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 22,194 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,821 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 133,673 | 124,596 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 50,583 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,356 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 127,970 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 110,682 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,341 |  |  |  |  |  |  |  |  |
Insurance | Professional lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 3,575,139 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 290,531 | 295,366 | 298,702 | 294,284 | 315,038 | 305,212 | 311,998 | 326,531 | 327,011 | 314,230
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 23,664 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,148 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 299,310 | 301,754 | 302,187 | 304,932 | 317,641 | 327,693 | 344,642 | 335,403 | 335,549 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 39,805 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,759 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 281,916 | 269,672 | 270,904 | 287,955 | 301,324 | 314,890 | 307,995 | 307,130 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 24,939 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,211 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 338,634 | 335,757 | 325,816 | 313,363 | 295,253 | 291,012 | 286,248 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 32,529 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 10,424 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 389,053 | 388,973 | 371,589 | 371,629 | 338,031 | 335,706 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 72,532 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 12,380 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 445,652 | 417,600 | 387,583 | 338,625 | 322,911 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 93,119 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 14,996 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 408,585 | 373,074 | 358,459 | 342,656 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 121,148 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 14,335 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 299,008 | 317,999 | 319,015 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 166,308 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,128 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 366,258 | 374,828 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 305,139 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,766 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 456,192 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 436,877 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,263 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 377,579 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 12,151 | 12,614 | 12,739 | 12,377 | 14,067 | 14,942 | 9,880 | 9,759 | 25,684 | 26,439
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 69,677 | 69,112 | 70,748 | 71,274 | 69,589 | 68,323 | 67,109 | 70,712 | 38,825 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 23,309 | 24,189 | 24,851 | 25,930 | 26,012 | 27,524 | 30,368 | 30,329 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 25,291 | 26,371 | 27,352 | 43,566 | 42,995 | 45,485 | 44,175 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 11,993 | 16,952 | 19,234 | 27,007 | 32,612 | 47,934 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 4,283 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 3 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 22,577 | 26,231 | 34,240 | 35,296 | 42,588 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 9,191 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 70,888 | 72,450 | 77,987 | 50,079 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 7,985 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 20 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 59,519 | 68,347 | 59,758 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 25,535 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 39 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 36,943 | 42,229 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 30,912 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 17 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 45,231 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 40,828 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 13 |  |  |  |  |  |  |  |  |
Insurance | Liability |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 2,009,958 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 97,047 | 94,196 | 89,897 | 91,938 | 95,978 | 93,677 | 88,237 | 95,170 | 95,304 | 93,230
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 12,187 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 3,737 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 132,659 | 132,029 | 132,551 | 131,461 | 132,006 | 130,659 | 129,725 | 124,264 | 107,115 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 12,691 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 5,531 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 188,577 | 186,853 | 187,927 | 182,612 | 164,915 | 137,385 | 127,236 | 128,435 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 22,972 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,574 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 125,644 | 120,101 | 120,116 | 127,366 | 128,782 | 130,127 | 124,307 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 21,537 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,417 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 215,101 | 204,612 | 200,470 | 184,847 | 165,415 | 166,717 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 21,746 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,629 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 216,530 | 204,879 | 190,809 | 167,808 | 166,973 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 29,705 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,473 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 236,959 | 221,266 | 191,683 | 190,645 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 43,102 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,936 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 230,421 | 223,996 | 223,579 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 113,650 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 5,848 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 244,972 | 231,189 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 150,924 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 5,965 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 322,048 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 282,198 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,657 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 1,777,335 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 111,294 | 111,277 | 111,198 | 111,162 | 111,162 | 111,155 | 111,623 | 113,009 | 113,631 | 108,977
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 757 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 87,906 | 88,021 | 87,734 | 86,774 | 86,772 | 86,765 | 89,238 | 102,354 | 101,383 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,106 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 92,313 | 92,350 | 93,341 | 93,007 | 93,722 | 93,964 | 100,434 | 93,792 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (1,876) |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 190,356 | 190,426 | 189,403 | 189,929 | 188,320 | 191,188 | 170,644 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (613) |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 183,077 | 183,120 | 182,097 | 183,286 | 189,430 | 183,817 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,528 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 200,190 | 200,854 | 198,105 | 200,269 | 193,667 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 4,693 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 204,951 | 207,347 | 211,896 | 217,320 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 5,896 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 213,230 | 220,334 | 226,549 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (7,052) |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 226,659 | 231,754 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 26,816 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 267,359 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 146,819 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 381,834 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 6,599 | 6,575 | 6,558 | 6,226 | 6,523 | 6,560 | 6,487 | 6,676 | 12,441 | 11,961
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (565) |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 9,505 | 9,003 | 8,764 | 8,514 | 9,166 | 7,182 | 7,990 | 9,142 | 10,183 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 423 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 11,968 | 12,016 | 12,251 | 12,620 | 14,979 | 10,806 | 9,217 | 10,363 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 418 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 36,238 | 35,834 | 35,511 | 36,996 | 35,605 | 35,330 | 32,280 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 625 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 40,887 | 43,230 | 46,608 | 41,360 | 42,760 | 55,072 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 844 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 47,522 | 44,042 | 27,609 | 28,072 | 18,830 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 443 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 80,976 | 79,146 | 81,480 | 69,056 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 5,760 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 38,273 | 42,071 | 40,548 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 4,380 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 40,968 | 43,886 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 15,886 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 68,898 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 54,268 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 1,876,315 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 168,014 | 164,383 | 168,466 | 180,269 | 204,246 | 212,039 | 212,750 | 214,632 | 213,826 | 208,838
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 5,422 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 233,317 | 225,276 | 227,327 | 228,865 | 232,493 | 218,251 | 218,600 | 218,664 | 218,770 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 5,973 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 240,255 | 234,298 | 227,545 | 230,650 | 224,028 | 213,463 | 211,312 | 211,463 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 12,860 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 266,249 | 254,339 | 254,459 | 226,932 | 199,369 | 195,775 | 194,725 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 28,900 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 209,111 | 186,713 | 176,930 | 161,029 | 154,910 | 154,457 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 31,256 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 172,749 | 164,966 | 154,366 | 147,533 | 145,212 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 37,223 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 144,336 | 140,144 | 136,277 | 136,846 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 48,864 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 134,318 | 140,003 | 139,748 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 82,908 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 139,493 | 147,961 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 112,421 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 168,473 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 154,252 |  |  |  |  |  |  |  |  |
Reinsurance | Liability |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 2,641,014 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 157,106 | 154,142 | 155,720 | 156,816 | 176,171 | 182,782 | 183,051 | 181,007 | 175,116 | 171,362
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 9,769 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 188,328 | 182,375 | 186,489 | 195,959 | 198,098 | 199,379 | 203,470 | 201,764 | 198,852 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 16,201 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 205,594 | 202,698 | 212,908 | 212,574 | 214,736 | 214,899 | 213,954 | 213,612 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 19,016 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 273,312 | 265,953 | 262,011 | 252,359 | 249,096 | 244,275 | 239,071 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 33,727 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 305,418 | 296,174 | 286,761 | 278,111 | 268,712 | 273,964 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 46,899 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 305,168 | 285,643 | 272,753 | 267,501 | 262,831 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 61,173 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 271,247 | 273,061 | 271,050 | 262,191 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 88,379 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 277,697 | 283,457 | 282,871 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 146,037 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 310,759 | 303,482 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 196,806 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 346,385 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 298,804 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 938,595 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 124,760 | 123,641 | 124,850 | 122,035 | 121,824 | 132,814 | 136,726 | 140,520 | 149,561 | 162,254
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,647 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 119,216 | 118,853 | 120,171 | 123,854 | 125,086 | 136,104 | 139,686 | 132,589 | 132,954 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 133 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 131,093 | 136,667 | 135,496 | 134,568 | 152,946 | 156,701 | 161,881 | 157,589 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,530 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 108,856 | 111,192 | 113,526 | 120,945 | 146,132 | 138,424 | 139,437 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,206 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 112,383 | 112,679 | 115,202 | 123,877 | 129,727 | 136,280 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 2,461 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 103,324 | 108,388 | 111,340 | 117,215 | 109,771 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 9,933 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 63,943 | 66,175 | 66,316 | 73,090 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 9,256 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 68,410 | 83,053 | 76,516 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 16,290 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 43,485 | 51,721 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 21,500 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 63,125 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 50,105 |  |  |  |  |  |  |  |  |
Reinsurance | Motor |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 2,207,122 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 107,772 | 107,275 | 111,011 | 113,999 | 122,196 | 125,052 | 128,421 | 137,357 | 148,570 | 154,629
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 5,350 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 152,730 | 152,080 | 152,566 | 155,735 | 159,020 | 163,297 | 166,277 | 171,207 | 174,534 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 2,906 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 196,266 | 196,003 | 198,653 | 199,861 | 210,117 | 208,365 | 204,962 | 214,064 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 6,881 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 231,759 | 228,144 | 230,691 | 238,949 | 248,315 | 246,951 | 236,330 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,531 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 337,372 | 342,097 | 341,108 | 340,571 | 350,773 | 347,985 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 12,195 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 330,259 | 342,114 | 345,746 | 335,555 | 343,073 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 12,092 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 317,512 | 325,792 | 325,918 | 328,062 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 23,908 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 205,512 | 207,767 | 205,885 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 38,657 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 173,409 | 173,077 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 36,756 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 154,531 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 69,678 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 1,175,230 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 121,752 | 120,853 | 121,805 | 120,919 | 120,799 | 120,807 | 120,795 | 121,107 | 117,467 | 107,068
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (330) |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 162,756 | 162,061 | 162,239 | 162,321 | 162,308 | 162,382 | 162,814 | 164,334 | 183,242 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 437 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 95,621 | 95,490 | 95,504 | 95,326 | 95,320 | 95,334 | 95,592 | 103,172 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (33) |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 108,599 | 108,647 | 109,457 | 109,218 | 110,630 | 117,507 | 123,798 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (227) |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 137,431 | 138,898 | 139,427 | 138,357 | 144,281 | 151,649 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (238) |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 139,907 | 140,538 | 140,806 | 147,271 | 140,936 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,412 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 183,289 | 187,685 | 185,218 | 184,177 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,679 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 63,778 | 62,738 | 62,593 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,775 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 61,225 | 69,759 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 9,475 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 100,872 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 77,550 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 3,972,281 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 251,472 | 252,736 | 254,589 | 256,433 | 259,488 | 260,012 | 265,575 | 282,546 | 308,714 | $ 339,293
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 927 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 217,746 | 218,620 | 218,807 | 222,835 | 223,003 | 226,620 | 235,489 | 245,246 | $ 241,052 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,354 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 244,839 | 246,716 | 248,890 | 243,963 | 245,175 | 254,344 | 254,255 | $ 265,915 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 4,350 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 279,384 | 279,338 | 278,910 | 275,463 | 280,767 | 284,044 | $ 284,047 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 5,861 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 732,026 | 741,329 | 743,340 | 742,280 | 703,287 | $ 703,634 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 22,110 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 604,626 | 618,695 | 632,623 | 617,378 | $ 523,856 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 14,356 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 401,170 | 419,002 | 439,421 | $ 454,804 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 30,117 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 542,837 | 548,722 | $ 517,487 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 60,793 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 434,809 | $ 425,525 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 54,826 |  |  |  |  |  |  |  |  |
Reinsurance | Run Off Lines | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 263,372 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 139,192 |  |  |  |  |  |  |  |  |

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