XML 103 R89.htm IDEA: XBRL DOCUMENT v3.22.0.1
RESERVE FOR LOSSES AND LOSS EXPENSES - Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Claims Development [Line Items]                    
Liabilities for claims and claim adjustment expenses, net of reinsurance $ 9,576,302                  
Insurance                    
Claims Development [Line Items]                    
Liabilities for claims and claim adjustment expenses, net of reinsurance 4,178,193                  
Insurance | Property and other                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 4,013,886                  
All outstanding liabilities before 2012, net of reinsurance 7,291                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 688,786                  
Insurance | Property and other | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 316,722 $ 316,614 $ 316,388 $ 314,282 $ 314,210 $ 309,042 $ 301,512 $ 278,538 $ 214,440 $ 77,684
Insurance | Property and other | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 273,752 269,290 265,442 263,605 260,576 249,534 238,483 199,585 76,142  
Insurance | Property and other | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 316,319 316,305 319,601 318,414 314,197 307,040 260,405 133,186    
Insurance | Property and other | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 242,516 250,620 243,895 243,213 228,910 204,138 100,169      
Insurance | Property and other | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 348,739 341,693 340,568 332,043 292,009 125,806        
Insurance | Property and other | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 773,007 775,507 745,770 629,722 256,234          
Insurance | Property and other | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 699,094 685,681 585,855 288,200            
Insurance | Property and other | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 382,521 328,183 197,452              
Insurance | Property and other | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 486,815 220,838                
Insurance | Property and other | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 174,401                  
Insurance | Marine                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 815,231                  
All outstanding liabilities before 2012, net of reinsurance 5,859                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 430,468                  
Insurance | Marine | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 58,122 55,830 55,654 54,621 52,631 50,284 49,474 44,734 38,466 10,706
Insurance | Marine | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 79,163 77,937 76,660 76,517 65,493 62,825 54,648 43,866 18,873  
Insurance | Marine | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 35,155 41,344 40,256 35,631 26,682 26,542 15,154 6,362    
Insurance | Marine | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 120,216 113,293 111,761 110,367 107,512 54,640 21,446      
Insurance | Marine | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 65,143 64,019 63,245 57,267 31,822 12,490        
Insurance | Marine | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 122,148 115,634 91,342 67,622 14,634          
Insurance | Marine | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 126,986 115,600 85,409 26,752            
Insurance | Marine | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 116,160 75,653 36,293              
Insurance | Marine | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 72,095 38,554                
Insurance | Marine | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 20,043                  
Insurance | Aviation                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 257,964                  
All outstanding liabilities before 2012, net of reinsurance 4,508                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 88,203                  
Insurance | Aviation | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 7,098 7,091 7,093 7,157 7,044 6,823 5,950 4,153 2,863 956
Insurance | Aviation | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 15,974 15,948 14,487 14,170 13,561 11,450 9,748 7,330 4,401  
Insurance | Aviation | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 15,086 15,027 14,856 14,493 13,856 11,698 8,028 3,989    
Insurance | Aviation | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 26,107 25,993 24,686 23,227 20,968 16,166 8,086      
Insurance | Aviation | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 29,926 29,074 27,838 26,274 19,289 10,416        
Insurance | Aviation | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 61,312 58,920 50,585 40,035 21,176          
Insurance | Aviation | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 50,347 47,287 40,068 21,235            
Insurance | Aviation | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 31,628 28,771 18,052              
Insurance | Aviation | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 12,954 6,324                
Insurance | Aviation | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 7,532                  
Insurance | Credit and political risk                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 302,288                  
All outstanding liabilities before 2012, net of reinsurance (874)                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 58,982                  
Insurance | Credit and political risk | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 44 44 44 44 42 40 0 0 0 0
Insurance | Credit and political risk | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 12,151 13,828 13,828 13,828 11,769 5,216 3,726 2,235 745  
Insurance | Credit and political risk | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 70,224 70,224 64,051 57,858 57,858 61,108 39,952 1,924    
Insurance | Credit and political risk | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 23,309 23,309 23,309 23,309 23,309 23,309 0      
Insurance | Credit and political risk | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 24,516 24,516 24,516 24,516 24,516 0        
Insurance | Credit and political risk | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 11,252 12,034 9,529 4,173 421          
Insurance | Credit and political risk | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 12,432 15,971 13,897 5,552            
Insurance | Credit and political risk | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 54,239 46,924 16,431              
Insurance | Credit and political risk | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 91,352 10,013                
Insurance | Credit and political risk | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 2,769                  
Insurance | Professional lines                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 2,155,119                  
All outstanding liabilities before 2012, net of reinsurance 113,232                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 2,009,370                  
Insurance | Professional lines | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 304,095 298,902 282,494 274,150 254,682 231,582 184,776 100,434 41,505 7,825
Insurance | Professional lines | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 291,767 277,239 264,537 243,890 213,979 176,433 130,081 73,251 17,718  
Insurance | Professional lines | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 277,463 253,387 243,586 224,461 192,845 130,348 70,688 23,579    
Insurance | Professional lines | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 258,963 243,082 204,121 170,009 138,136 67,886 20,291      
Insurance | Professional lines | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 261,321 234,825 192,832 147,678 71,229 15,913        
Insurance | Professional lines | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 240,455 206,193 139,143 71,877 21,052          
Insurance | Professional lines | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 222,374 155,101 82,982 20,945            
Insurance | Professional lines | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 169,088 99,158 28,206              
Insurance | Professional lines | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 95,558 26,640                
Insurance | Professional lines | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 34,035                  
Insurance | Liability                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 849,499                  
All outstanding liabilities before 2012, net of reinsurance 61,635                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 902,384                  
Insurance | Liability | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 48,505 48,316 48,034 46,541 42,740 37,139 30,145 15,411 5,514 1,631
Insurance | Liability | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 78,023 73,314 71,983 66,964 60,005 42,051 33,320 23,281 2,360  
Insurance | Liability | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 106,215 103,050 93,576 84,376 71,596 49,839 18,643 1,414    
Insurance | Liability | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 150,848 141,002 120,313 92,744 39,702 22,444 5,438      
Insurance | Liability | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 79,594 66,371 56,455 36,382 23,289 6,323        
Insurance | Liability | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 144,267 116,157 59,306 29,610 5,561          
Insurance | Liability | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 119,446 72,398 34,931 9,460            
Insurance | Liability | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 83,943 39,986 7,887              
Insurance | Liability | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 25,245 8,163                
Insurance | Liability | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 13,413                  
Reinsurance                    
Claims Development [Line Items]                    
Liabilities for claims and claim adjustment expenses, net of reinsurance 5,398,109                  
Reinsurance | Property and other                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 5,601,878                  
All outstanding liabilities before 2012, net of reinsurance 20,247                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 1,652,950                  
Reinsurance | Property and other | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 434,420 430,468 428,889 416,360 414,306 404,621 390,051 367,575 294,809 122,945
Reinsurance | Property and other | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 487,971 484,128 484,429 483,785 482,360 472,619 442,216 325,596 107,774  
Reinsurance | Property and other | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 468,080 461,202 463,976 458,981 452,832 435,322 353,313 102,421    
Reinsurance | Property and other | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 436,720 420,783 414,291 401,731 369,339 266,150 71,550      
Reinsurance | Property and other | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 592,193 584,602 565,778 522,648 378,387 128,812        
Reinsurance | Property and other | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 965,116 938,025 866,481 723,271 252,454          
Reinsurance | Property and other | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 859,649 793,481 646,904 196,679            
Reinsurance | Property and other | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 708,467 590,010 162,093              
Reinsurance | Property and other | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 483,680 209,072                
Reinsurance | Property and other | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 165,582                  
Reinsurance | Professional lines                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 983,485                  
All outstanding liabilities before 2012, net of reinsurance 68,013                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 968,664                  
Reinsurance | Professional lines | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 165,580 155,739 146,093 132,030 107,351 86,064 53,696 29,657 10,404 778
Reinsurance | Professional lines | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 133,276 128,867 123,498 105,054 81,721 65,027 30,544 12,089 1,066  
Reinsurance | Professional lines | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 178,781 159,081 147,361 109,356 74,640 48,891 13,079 2,019    
Reinsurance | Professional lines | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 152,907 132,153 112,030 79,285 41,565 13,506 3,134      
Reinsurance | Professional lines | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 154,200 125,448 95,450 52,689 20,566 1,771        
Reinsurance | Professional lines | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 89,223 62,975 39,960 14,961 2,814          
Reinsurance | Professional lines | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 57,170 31,352 2,616 271            
Reinsurance | Professional lines | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 33,902 13,696 371              
Reinsurance | Professional lines | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 14,109 3,825                
Reinsurance | Professional lines | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 4,337                  
Reinsurance | Liability                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 1,139,199                  
All outstanding liabilities before 2012, net of reinsurance 114,137                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 1,402,618                  
Reinsurance | Liability | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 136,365 134,357 126,071 115,695 101,234 78,291 58,815 28,392 12,803 3,541
Reinsurance | Liability | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 128,124 123,710 113,154 102,617 88,280 69,069 52,338 22,242 5,974  
Reinsurance | Liability | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 137,659 130,304 110,095 89,502 70,214 48,445 28,672 7,094    
Reinsurance | Liability | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 141,808 131,010 109,056 80,911 54,556 27,460 7,271      
Reinsurance | Liability | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 167,276 143,293 112,028 69,655 37,742 11,884        
Reinsurance | Liability | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 159,265 121,223 78,771 42,227 12,477          
Reinsurance | Liability | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 128,405 85,510 50,121 19,361            
Reinsurance | Liability | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 80,066 45,415 19,326              
Reinsurance | Liability | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 49,233 16,950                
Reinsurance | Liability | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 10,998                  
Reinsurance | Credit and surety                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 833,062                  
All outstanding liabilities before 2012, net of reinsurance 21,326                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 249,302                  
Reinsurance | Credit and surety | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 113,870 114,809 114,392 112,430 111,111 109,335 105,808 99,969 85,902 49,736
Reinsurance | Credit and surety | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 113,741 115,494 113,284 108,318 106,422 98,755 92,165 77,279 32,474  
Reinsurance | Credit and surety | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 108,039 108,232 107,724 103,309 95,711 86,580 61,490 35,632    
Reinsurance | Credit and surety | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 123,907 123,042 119,333 117,426 100,347 82,167 32,944      
Reinsurance | Credit and surety | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 102,153 103,591 102,465 92,792 73,643 42,110        
Reinsurance | Credit and surety | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 101,047 102,901 91,162 74,473 37,387          
Reinsurance | Credit and surety | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 85,470 73,748 69,040 39,079            
Reinsurance | Credit and surety | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 46,028 31,841 19,382              
Reinsurance | Credit and surety | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 34,330 25,386                
Reinsurance | Credit and surety | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 4,477                  
Reinsurance | Motor                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 1,519,752                  
All outstanding liabilities before 2012, net of reinsurance 230,586                  
Liabilities for claims and claim adjustment expenses, net of reinsurance 1,124,575                  
Reinsurance | Motor | Accident Year 2012                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 97,432 86,130 94,827 93,594 91,200 86,965 80,217 70,098 54,803 $ 29,565
Reinsurance | Motor | Accident Year 2013                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 99,978 86,532 95,445 92,307 86,524 80,600 70,078 55,392 $ 34,395  
Reinsurance | Motor | Accident Year 2014                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 143,954 122,682 126,849 116,724 106,072 97,479 76,923 $ 43,918    
Reinsurance | Motor | Accident Year 2015                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 177,260 154,002 152,558 135,958 118,018 96,745 $ 58,581      
Reinsurance | Motor | Accident Year 2016                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 191,945 166,826 152,721 133,970 108,670 $ 61,686        
Reinsurance | Motor | Accident Year 2017                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 232,316 208,687 171,933 139,560 $ 73,425          
Reinsurance | Motor | Accident Year 2018                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 227,804 215,555 148,084 $ 85,158            
Reinsurance | Motor | Accident Year 2019                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 206,602 186,943 $ 90,829              
Reinsurance | Motor | Accident Year 2020                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 100,288 $ 44,268                
Reinsurance | Motor | Accident Year 2021                    
Claims Development [Line Items]                    
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 42,173