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Short Duration Contracts - Claims development - Insurance (Details) $ in Thousands | Dec. 31, 2022 USD ($) claims | Dec. 31, 2021 USD ($) | 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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Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | $ 13,445,271 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 2,279,988 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 1,547,766 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance | 18,239 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 750,461 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 124,868 | $ 125,813 | $ 126,825 | $ 128,157 | $ 133,400 | $ 134,473 | $ 142,889 | $ 148,622 | $ 156,147 | $ 158,548
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 124,402 | 124,381 | 124,227 | 122,894 | 125,014 | 121,779 | 119,649 | 110,432 | 84,680 | 32,216
Total of IBNR liabilities plus expected development on reported claims | $ 27 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 3,982 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 133,605 | 134,803 | 134,895 | 134,192 | 132,166 | 136,050 | 147,248 | 145,679 | 148,104 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 122,792 | 122,165 | 115,253 | 98,423 | 87,681 | 84,061 | 77,764 | 53,632 | 25,849 |
Total of IBNR liabilities plus expected development on reported claims | $ 1,674 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 3,557 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 90,816 | 91,833 | 91,770 | 97,789 | 102,449 | 103,921 | 109,769 | 112,299 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 87,564 | 87,260 | 86,190 | 87,870 | 86,196 | 76,282 | 64,900 | 23,561 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 2,654 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 4,244 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 87,618 | 92,108 | 95,989 | 100,003 | 105,184 | 100,843 | 104,002 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 87,232 | 90,808 | 94,570 | 97,089 | 98,303 | 83,218 | 24,684 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 61 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 5,704 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 225,298 | 231,199 | 230,413 | 235,924 | 246,264 | 280,686 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 217,764 | 215,874 | 211,688 | 195,512 | 139,849 | 30,215 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 3,268 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 6,287 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 170,411 | 170,057 | 173,693 | 186,030 | 180,981 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 149,663 | 142,838 | 134,858 | 102,285 | 30,026 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 7,177 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 5,048 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 161,156 | 165,477 | 178,564 | 179,056 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 139,141 | 133,911 | 105,380 | 26,130 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 4,162 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 5,942 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 335,747 | 329,362 | 359,394 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 251,055 | 194,487 | 55,619 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 28,330 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 8,546 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 428,719 | 426,870 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 267,677 | 90,423 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 54,746 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 7,566 |  |  |  |  |  |  |  |  |
Insurance | Property, energy, marine and aviation | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 521,750 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 100,476 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 208,080 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 8,965 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 4,677,656 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 1,755,958 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance | 263,297 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 3,184,995 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 263,430 | 270,110 | 269,297 | 272,385 | 274,246 | 281,637 | 301,622 | 306,572 | 296,668 | 282,852
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 192,159 | 184,444 | 174,591 | 164,090 | 149,012 | 122,045 | 101,153 | 71,335 | 29,215 | 6,840
Total of IBNR liabilities plus expected development on reported claims | $ 43,148 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 66,118 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 345,024 | 343,286 | 342,641 | 343,904 | 339,403 | 342,759 | 338,505 | 335,587 | 329,718 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 237,135 | 223,895 | 211,440 | 191,108 | 161,935 | 112,541 | 71,473 | 40,226 | 9,200 |
Total of IBNR liabilities plus expected development on reported claims | $ 60,263 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 75,557 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 379,226 | 386,465 | 382,427 | 391,132 | 391,797 | 398,565 | 391,570 | 358,769 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 249,399 | 227,439 | 211,510 | 181,505 | 139,364 | 88,411 | 44,514 | 11,110 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 75,540 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 78,507 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 363,453 | 367,586 | 374,654 | 399,315 | 405,803 | 394,190 | 389,530 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 215,481 | 194,637 | 164,534 | 136,759 | 87,543 | 41,920 | 11,679 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 93,800 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 78,576 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 406,165 | 406,857 | 412,231 | 422,360 | 417,662 | 417,097 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 220,660 | 165,468 | 134,988 | 99,806 | 52,309 | 13,391 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 114,603 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 84,418 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 458,050 | 451,164 | 450,647 | 452,879 | 430,128 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 198,502 | 154,138 | 115,049 | 63,776 | 16,991 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 156,700 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 77,685 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 471,279 | 480,535 | 487,080 | 455,928 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 172,948 | 121,646 | 73,075 | 18,375 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 195,283 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 84,985 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 640,231 | 616,314 | 606,640 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 154,902 | 76,567 | 24,407 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 309,019 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 90,795 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 662,716 | 621,972 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 90,791 | 26,235 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 431,302 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 89,718 |  |  |  |  |  |  |  |  |
Insurance | Third party occurrence business | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 688,082 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 23,981 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 614,366 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 70,380 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 3,759,343 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 1,854,161 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance | 86,120 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 1,991,302 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 281,584 | 273,607 | 271,156 | 281,642 | 290,852 | 294,372 | 320,177 | 324,044 | 320,266 | 301,608
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 253,570 | 246,813 | 245,423 | 238,730 | 216,984 | 197,861 | 179,261 | 137,857 | 87,386 | 19,007
Total of IBNR liabilities plus expected development on reported claims | $ 14,639 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 14,953 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 296,153 | 287,573 | 291,498 | 297,248 | 281,271 | 278,556 | 298,541 | 279,410 | 264,273 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 260,333 | 249,307 | 243,137 | 229,314 | 207,447 | 172,722 | 129,409 | 63,288 | 13,814 |
Total of IBNR liabilities plus expected development on reported claims | $ 21,206 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,482 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 266,758 | 267,725 | 252,263 | 255,207 | 259,830 | 276,256 | 277,358 | 258,740 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 220,871 | 216,892 | 193,105 | 174,084 | 126,431 | 100,030 | 52,007 | 9,059 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 18,198 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 14,392 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 329,534 | 326,960 | 321,764 | 314,412 | 308,080 | 291,258 | 274,996 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 256,705 | 242,300 | 205,478 | 158,127 | 127,203 | 68,157 | 10,537 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 29,356 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,083 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 316,673 | 323,128 | 308,172 | 311,724 | 285,738 | 270,272 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 232,508 | 195,788 | 143,064 | 112,975 | 67,529 | 9,281 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 45,042 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,198 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 347,449 | 336,106 | 319,646 | 314,112 | 272,543 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 208,063 | 158,389 | 118,105 | 68,244 | 12,241 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 61,612 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,934 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 322,178 | 317,363 | 317,312 | 289,128 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 154,630 | 122,046 | 65,286 | 12,373 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 93,422 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,858 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 423,375 | 413,156 | 383,497 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 151,750 | 87,248 | 17,070 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 187,245 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,438 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 517,975 | 514,676 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 90,487 | 23,253 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 351,736 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 15,751 |  |  |  |  |  |  |  |  |
Insurance | Third party claims-made business | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 657,664 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 25,244 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 575,484 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 18,190 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 4,849,348 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 3,655,902 |  |  |  |  |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance | 22,275 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses, net of reinsurance | 1,215,721 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | 244,191 | 245,069 | 245,825 | 248,634 | 253,271 | 251,894 | 263,928 | 263,631 | 272,335 | 264,243
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 238,257 | 238,321 | 237,293 | 236,375 | 234,330 | 225,324 | 213,461 | 180,428 | 150,925 | $ 86,680
Total of IBNR liabilities plus expected development on reported claims | $ 2,761 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 86,371 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 310,977 | 309,061 | 310,051 | 313,221 | 317,197 | 318,268 | 318,453 | 325,705 | 301,548 |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 295,896 | 294,630 | 293,131 | 291,727 | 281,195 | 267,079 | 234,267 | 196,899 | $ 107,726 |
Total of IBNR liabilities plus expected development on reported claims | $ 3,968 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 130,844 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 344,974 | 347,206 | 349,432 | 356,657 | 364,815 | 356,777 | 357,939 | 334,684 |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 331,320 | 330,431 | 326,652 | 320,971 | 305,895 | 277,850 | 236,108 | $ 138,153 |  |
Total of IBNR liabilities plus expected development on reported claims | $ 5,632 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 170,579 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 408,716 | 408,004 | 409,987 | 416,108 | 427,829 | 430,976 | 408,686 |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 390,350 | 385,314 | 379,305 | 362,823 | 341,789 | 304,743 | $ 175,948 |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 8,616 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 189,406 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 512,717 | 504,322 | 500,947 | 491,347 | 501,026 | 482,436 |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 471,978 | 446,002 | 423,480 | 380,696 | 342,385 | $ 181,102 |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 12,776 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 229,570 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 564,693 | 565,116 | 562,848 | 564,563 | 512,406 |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 508,649 | 479,824 | 442,643 | 389,047 | $ 211,711 |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 21,722 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 256,621 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 651,004 | 640,262 | 612,179 | 566,864 |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 548,844 | 486,882 | 385,794 | $ 211,970 |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 38,672 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 250,441 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 515,016 | 569,123 | 618,340 |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 358,967 | 309,106 | $ 171,994 |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 87,261 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 162,214 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2021 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 618,581 | 635,186 |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 334,549 | $ 156,992 |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 153,336 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 113,165 |  |  |  |  |  |  |  |  |
Insurance | Multi-line and other specialty | 2022 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, net of reinsurance | $ 678,479 |  |  |  |  |  |  |  |  |
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance | 177,092 |  |  |  |  |  |  |  |  |
Total of IBNR liabilities plus expected development on reported claims | $ 425,107 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | claims | 89,859 |  |  |  |  |  |  |  |  |

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