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RESERVE FOR LOSSES AND LOSS EXPENSES - Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance (Details) $ in Thousands | Dec. 31, 2024 USD ($) claim | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
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Insurance | Property |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 4,321,385 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 184,012 | $ 180,785 | $ 180,172 | $ 177,908 | $ 187,860 | $ 186,032 | $ 189,373 | $ 191,577 | $ 199,448 | $ 207,189
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,053 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,199 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 260,698 | 261,379 | 256,192 | 256,766 | 256,514 | 262,436 | 276,891 | 284,462 | 261,565 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ (854) |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,685 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 662,072 | 663,510 | 668,986 | 668,663 | 673,336 | 682,582 | 694,953 | 789,318 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 11,091 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 10,117 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 585,484 | 591,064 | 600,469 | 601,674 | 608,937 | 629,218 | 600,141 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 5,167 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,701 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 343,852 | 343,816 | 360,367 | 349,495 | 357,615 | 368,594 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,904 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,630 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 590,238 | 584,608 | 575,827 | 627,229 | 644,750 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 15,480 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 12,528 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 366,639 | 366,781 | 370,445 | 375,981 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 10,732 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,943 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 396,296 | 413,181 | 411,156 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 27,546 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,707 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 392,842 | 395,636 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 95,149 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,143 |  |  |  |  |  |  |  |  |
Insurance | Property | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 539,252 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 274,741 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,578 |  |  |  |  |  |  |  |  |
Insurance | Accident and health |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 1,054,086 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 60,933 | 60,850 | 63,519 | 62,860 | 63,527 | 63,844 | 63,278 | 65,066 | 68,570 | 70,003
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,075 |  |  |  |  |  |  |  |  |
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 | $ 85,654 | 86,249 | 86,822 | 87,038 | 86,029 | 86,343 | 85,219 | 84,824 | 84,654 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 860 |  |  |  |  |  |  |  |  |
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 | $ 117,082 | 116,916 | 115,798 | 115,913 | 115,848 | 117,761 | 119,968 | 113,374 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 74 |  |  |  |  |  |  |  |  |
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 | $ 114,193 | 113,253 | 112,563 | 111,552 | 113,478 | 114,418 | 110,256 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 130 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 745,012 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 69,578 | 67,110 | 68,028 | 64,562 | 74,067 | 73,130 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 556 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 675,633 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 64,902 | 62,922 | 66,164 | 62,944 | 69,137 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 555 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 718,518 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 75,036 | 76,918 | 70,639 | 68,873 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,664 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 440,175 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 95,259 | 98,228 | 97,576 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 2,660 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 400,429 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 163,983 | 170,186 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 19,627 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 406,521 |  |  |  |  |  |  |  |  |
Insurance | Accident and health | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 207,466 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 74,872 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 365,749 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 2,174,512 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 141,557 | 141,862 | 143,359 | 143,385 | 144,418 | 138,907 | 151,503 | 159,304 | 164,397 | 186,023
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,316 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 100,809 | 101,680 | 100,732 | 99,830 | 100,703 | 101,322 | 109,092 | 111,630 | 115,442 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 2,930 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4,898 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 211,499 | 212,002 | 213,545 | 213,940 | 222,060 | 224,246 | 227,207 | 260,225 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 5,926 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,589 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 225,769 | 225,057 | 223,605 | 230,422 | 237,372 | 251,517 | 234,768 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 11,695 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,787 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 246,540 | 221,512 | 223,032 | 210,690 | 208,026 | 213,917 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 4,556 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,755 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 167,229 | 163,264 | 161,953 | 178,537 | 207,122 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 9,134 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,533 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 222,356 | 201,232 | 219,002 | 238,454 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 20,126 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,922 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 255,744 | 254,138 | 263,742 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 68,596 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,650 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 261,711 | 297,529 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 99,643 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,266 |  |  |  |  |  |  |  |  |
Insurance | Marine and aviation | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 341,298 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 185,817 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,103 |  |  |  |  |  |  |  |  |
Insurance | Cyber |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 855,794 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 48,036 | 48,042 | 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 | $ 2,226 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,428 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 25,254 | 25,258 | 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 | $ 1,079 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,671 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 46,036 | 48,343 | 48,696 | 50,910 | 51,931 | 56,783 | 50,794 | 53,187 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ (4) |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,817 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 29,447 | 23,902 | 26,168 | 30,558 | 33,962 | 31,966 | 33,429 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 1,845 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,156 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 63,767 | 71,246 | 80,157 | 80,098 | 56,994 | 54,237 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 3,608 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,904 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 133,525 | 124,751 | 101,604 | 104,869 | 113,305 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 24,605 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,880 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 105,722 | 104,732 | 133,593 | 124,709 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 21,145 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,450 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 119,484 | 119,436 | 128,483 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 61,903 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,766 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 126,343 | 126,838 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 57,395 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2,336 |  |  |  |  |  |  |  |  |
Insurance | Cyber | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 158,180 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 138,542 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 1,325 |  |  |  |  |  |  |  |  |
Insurance | Professional lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 3,954,264 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 285,261 | 280,054 | 281,645 | 270,615 | 271,774 | 288,635 | 301,759 | 315,378 | 308,832 | 308,206
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 12,111 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,662 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 359,445 | 354,094 | 337,725 | 336,376 | 326,544 | 314,273 | 295,992 | 291,739 | 287,119 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 21,448 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 10,949 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 395,866 | 390,818 | 386,243 | 388,467 | 372,365 | 371,856 | 339,010 | 336,606 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 37,337 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 12,966 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 467,834 | 464,430 | 445,299 | 419,568 | 388,834 | 339,960 | 323,638 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 32,176 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 15,537 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 466,546 | 455,966 | 408,326 | 375,361 | 360,720 | 345,193 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 74,818 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 14,793 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 292,430 | 290,925 | 299,016 | 318,886 | 320,300 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 92,856 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 9,634 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 320,376 | 323,579 | 366,527 | 375,982 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 157,986 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,656 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 437,668 | 443,592 | 457,637 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 297,452 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,740 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 440,324 | 438,129 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 335,563 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 10,252 |  |  |  |  |  |  |  |  |
Insurance | Professional lines | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 488,514 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 459,342 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,556 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 399,853 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 23,309 | 23,309 | 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 | $ 25,703 | 25,705 | 25,705 | 26,785 | 27,766 | 43,980 | 43,409 | 45,899 | 43,327 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ (2) |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 2 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 7,744 | 8,404 | 10,904 | 15,867 | 18,118 | 25,783 | 32,467 | 47,743 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 3,167 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 4 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 24,379 | 23,774 | 20,464 | 24,093 | 32,057 | 33,166 | 42,339 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 5,084 |  |  |  |  |  |  |  |  |
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 | $ 69,499 | 70,922 | 73,703 | 75,270 | 80,386 | 52,570 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 10,431 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 33 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 47,927 | 49,018 | 60,212 | 69,650 | 60,857 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 18,124 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 44 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 26,769 | 26,140 | 36,817 | 42,063 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 12,908 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 24 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 43,030 | 44,078 | 45,035 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 34,088 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 27 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 59,525 | 58,702 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 40,167 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 31 |  |  |  |  |  |  |  |  |
Insurance | Credit and political risk | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 71,968 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 67,838 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 20 |  |  |  |  |  |  |  |  |
Insurance | Liability |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 2,760,885 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 194,101 | 189,335 | 187,816 | 186,575 | 187,650 | 182,354 | 164,685 | 137,188 | 127,087 | 128,433
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 21,585 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,886 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 124,707 | 124,751 | 125,396 | 119,993 | 119,989 | 127,257 | 128,697 | 130,074 | 124,296 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 11,666 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,755 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 247,666 | 249,403 | 213,374 | 203,242 | 199,054 | 183,687 | 165,181 | 166,690 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 27,690 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,903 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 258,462 | 250,910 | 215,235 | 203,849 | 189,916 | 167,040 | 166,951 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 34,684 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,731 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 300,576 | 299,503 | 236,977 | 221,935 | 192,509 | 191,681 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 42,047 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,398 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 245,534 | 248,412 | 230,122 | 224,321 | 223,954 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 54,701 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 6,408 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 292,933 | 301,010 | 244,781 | 231,577 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 75,781 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,246 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 357,079 | 356,752 | 322,623 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 162,714 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 8,258 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 360,192 | 363,821 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 255,535 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 7,085 |  |  |  |  |  |  |  |  |
Insurance | Liability | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 379,635 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 351,221 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claim | 3,727 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | $ 2,003,038 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 92,914 | 92,966 | 92,221 | 92,251 | 93,243 | 92,906 | 93,627 | 93,862 | 100,350 | 93,754
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 84 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 190,971 | 190,319 | 190,190 | 190,290 | 189,280 | 189,806 | 188,189 | 191,077 | 170,604 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 655 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 182,326 | 181,916 | 182,973 | 183,023 | 182,013 | 183,173 | 189,292 | 183,761 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 384 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 197,152 | 196,940 | 199,949 | 200,611 | 197,880 | 200,151 | 193,622 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,119 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 199,155 | 198,928 | 204,907 | 207,308 | 211,873 | 217,364 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,108 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 198,843 | 199,261 | 213,245 | 220,449 | 226,693 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 504 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 218,106 | 222,084 | 226,777 | 231,917 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,442 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 256,577 | 262,981 | 267,051 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 19,738 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 251,034 | 242,835 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 43,093 |  |  |  |  |  |  |  |  |
Reinsurance | Accident and health | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 215,960 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 77,080 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 1,070,258 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 96,287 | 96,225 | 95,608 | 95,476 | 95,492 | 95,314 | 95,308 | 95,321 | 95,576 | 103,144
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (3) |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 108,701 | 108,912 | 108,167 | 108,219 | 109,042 | 108,795 | 110,207 | 117,045 | 123,359 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 14 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 133,371 | 136,483 | 137,342 | 138,810 | 139,344 | 138,274 | 144,159 | 151,526 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 36 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 146,050 | 142,610 | 139,823 | 140,457 | 140,727 | 147,182 | 140,830 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 399 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 184,383 | 182,923 | 183,213 | 187,599 | 185,089 | 182,793 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 323 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 59,833 | 61,801 | 63,702 | 62,636 | 62,506 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 153 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 56,784 | 57,608 | 61,057 | 69,694 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,740 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 90,378 | 91,299 | 101,001 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,573 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 104,308 | 103,003 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 45,157 |  |  |  |  |  |  |  |  |
Reinsurance | Agriculture | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 90,163 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 82,981 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 436,150 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 11,964 | 11,993 | 11,937 | 11,986 | 12,220 | 12,589 | 14,938 | 10,777 | 9,193 | 10,360
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 441 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 35,920 | 35,208 | 35,715 | 35,309 | 34,982 | 36,486 | 35,092 | 34,714 | 32,111 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 131 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 41,445 | 40,366 | 40,443 | 42,787 | 46,176 | 40,935 | 42,541 | 54,853 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 78 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 47,392 | 48,103 | 46,729 | 43,264 | 26,877 | 27,331 | 18,797 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,198 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 86,262 | 84,590 | 81,494 | 79,650 | 81,921 | 69,487 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 4,059 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 37,990 | 36,464 | 37,298 | 41,273 | 40,006 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,803 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 38,786 | 35,108 | 40,438 | 43,366 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,642 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 49,649 | 58,762 | 68,401 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 17,062 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 37,916 | 40,526 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 20,892 |  |  |  |  |  |  |  |  |
Reinsurance | Marine and aviation | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 48,826 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 41,877 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 1,770,315 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 250,292 | 250,896 | 239,843 | 233,925 | 227,420 | 230,444 | 223,865 | 213,232 | 211,024 | 211,361
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 15,211 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 276,527 | 277,105 | 265,439 | 253,578 | 253,676 | 226,305 | 198,934 | 195,543 | 194,564 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 18,210 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 237,500 | 237,237 | 208,425 | 185,849 | 176,245 | 160,679 | 154,560 | 154,215 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 27,326 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 190,588 | 193,077 | 172,179 | 164,134 | 153,514 | 146,713 | 144,599 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | (677) |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 149,984 | 154,826 | 143,617 | 138,634 | 135,003 | 135,866 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 15,699 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 135,632 | 131,679 | 133,815 | 138,846 | 138,881 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 55,500 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 135,793 | 134,870 | 139,462 | 147,464 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 77,868 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 152,014 | 152,352 | 168,535 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 99,800 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 135,427 | 135,093 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 106,522 |  |  |  |  |  |  |  |  |
Reinsurance | Professional lines | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 106,558 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 96,010 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 835,280 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 125,755 | 125,761 | 129,441 | 134,817 | 133,679 | 132,750 | 150,883 | 154,425 | 159,662 | 156,256
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,361 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 111,169 | 109,579 | 107,428 | 109,778 | 112,113 | 119,427 | 144,405 | 136,760 | 138,199 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 592 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 110,277 | 111,360 | 110,948 | 111,099 | 113,551 | 122,255 | 128,141 | 135,014 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 2,239 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 87,535 | 87,774 | 101,044 | 106,339 | 109,266 | 115,673 | 108,874 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,276 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 54,501 | 54,467 | 62,649 | 64,711 | 64,952 | 72,245 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,369 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 89,395 | 94,044 | 68,240 | 82,568 | 76,156 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 13,239 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 41,061 | 40,832 | 43,356 | 51,523 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 13,639 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 50,203 | 50,474 | 63,310 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 30,771 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 85,451 | 85,730 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 45,993 |  |  |  |  |  |  |  |  |
Reinsurance | Credit and surety | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 79,933 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 54,383 |  |  |  |  |  |  |  |  |
Reinsurance | Motor |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 2,209,966 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 199,471 | 199,519 | 200,843 | 200,453 | 203,169 | 204,009 | 214,510 | 212,699 | 208,783 | 215,985
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 10,658 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 238,942 | 238,717 | 238,113 | 234,357 | 236,810 | 244,592 | 254,013 | 252,847 | 239,098 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,903 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 351,699 | 351,598 | 344,966 | 349,584 | 348,494 | 347,805 | 358,716 | 353,883 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 21,818 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 350,894 | 351,737 | 339,260 | 351,594 | 354,625 | 343,752 | 348,090 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 17,085 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 326,155 | 326,641 | 321,798 | 330,904 | 330,204 | 331,840 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 7,574 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 192,990 | 192,333 | 208,823 | 212,344 | 209,930 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 7,877 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 178,561 | 178,461 | 176,135 | 176,116 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 22,550 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 158,097 | 166,810 | 154,073 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 24,177 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 128,732 | 121,411 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 23,925 |  |  |  |  |  |  |  |  |
Reinsurance | Motor | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 84,425 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 50,610 |  |  |  |  |  |  |  |  |
Reinsurance | Liability |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 3,050,692 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 215,609 | 215,869 | 205,170 | 202,266 | 212,453 | 212,052 | 214,193 | 214,303 | 213,356 | 213,111
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 12,588 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 313,766 | 311,876 | 271,912 | 264,490 | 260,727 | 251,425 | 248,154 | 243,345 | 238,237 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 30,063 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 338,776 | 339,798 | 303,916 | 294,535 | 285,245 | 276,627 | 267,788 | 273,121 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 25,655 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 349,317 | 349,520 | 304,407 | 284,659 | 271,505 | 266,567 | 262,170 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 47,871 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 334,773 | 329,313 | 271,351 | 272,501 | 270,541 | 262,105 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 82,959 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 307,787 | 303,976 | 277,534 | 282,700 | 282,298 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 104,900 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 334,588 | 343,399 | 310,334 | 302,849 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 139,743 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 334,639 | 341,727 | 346,756 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 165,420 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 273,571 | 273,950 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 170,489 |  |  |  |  |  |  |  |  |
Reinsurance | Liability | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 247,866 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 217,212 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 3,458,454 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 240,152 | 240,289 | 242,674 | 244,566 | 246,713 | 241,916 | 243,094 | 252,266 | 252,265 | $ 264,343
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 1,636 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 265,991 | 266,307 | 273,184 | 273,472 | 273,294 | 269,952 | 275,202 | 277,871 | $ 278,963 |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 3,048 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 729,636 | 725,458 | 733,045 | 742,270 | 744,427 | 743,852 | 702,732 | $ 701,995 |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 23,633 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 587,086 | 589,927 | 589,801 | 603,972 | 617,932 | 603,305 | $ 518,635 |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 14,977 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 368,869 | 366,152 | 372,883 | 387,635 | 407,538 | $ 431,902 |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 14,143 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 533,431 | 537,210 | 533,206 | 538,067 | $ 509,942 |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 31,778 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2021 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 421,678 | 422,974 | 427,037 | $ 419,674 |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 28,832 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2022 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 221,806 | 218,849 | $ 260,346 |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 43,059 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2023 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 60,979 | $ 63,904 |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | 21,860 |  |  |  |  |  |  |  |  |
Reinsurance | Run-off lines | Accident Year 2024 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses | 28,826 |  |  |  |  |  |  |  |  |
Total of incurred-but-not-reported liabilities plus expected development on reported claims | $ 7,873 |  |  |  |  |  |  |  |  |

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