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Reserve for Unpaid Losses and Loss Adjustment Expenses - Historical Loss Development Triangles, P&C (Details) claim in Millions, $ in Millions | Dec. 31, 2020 USD ($) claim | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($)
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Workers’ compensation |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 10,633 |  |  |  |  |  |  |  |  |
Workers’ compensation | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 2,235 | $ 2,239 | $ 2,242 | $ 2,232 | $ 2,224 | $ 2,221 | $ 2,206 | $ 2,204 | $ 2,099 | $ 2,013
IBNR Reserves | $ 291 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 177,961 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,811 | 1,786 | 1,746 | 1,690 | 1,622 | 1,518 | 1,368 | 1,156 | 841 | 371
Workers’ compensation | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 2,135 | 2,146 | 2,154 | 2,169 | 2,168 | 2,181 | 2,207 | 2,207 | 2,185 |
IBNR Reserves | $ 325 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 171,494 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,678 | 1,644 | 1,587 | 1,529 | 1,436 | 1,313 | 1,106 | 809 | 359 |
Workers’ compensation | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,831 | 1,850 | 1,861 | 1,861 | 1,883 | 1,920 | 1,981 | 2,020 |  |
IBNR Reserves | $ 378 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 151,422 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,339 | 1,304 | 1,260 | 1,175 | 1,071 | 917 | 675 | 304 |  |
Workers’ compensation | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,679 | 1,692 | 1,713 | 1,761 | 1,789 | 1,838 | 1,869 |  |  |
IBNR Reserves | $ 437 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 126,217 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,137 | 1,099 | 1,041 | 960 | 811 | 598 | 275 |  |  |
Workers’ compensation | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,699 | 1,714 | 1,724 | 1,801 | 1,835 | 1,873 |  |  |  |
IBNR Reserves | $ 477 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 113,966 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,068 | 1,004 | 909 | 778 | 576 | 261 |  |  |  |
Workers’ compensation | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,748 | 1,767 | 1,780 | 1,772 | 1,772 |  |  |  |  |
IBNR Reserves | $ 574 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 112,058 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,003 | 908 | 779 | 579 | 255 |  |  |  |  |
Workers’ compensation | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,822 | 1,840 | 1,869 | 1,862 |  |  |  |  |  |
IBNR Reserves | $ 753 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 111,510 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 900 | 778 | 575 | 261 |  |  |  |  |  |
Workers’ compensation | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,915 | 1,917 | 1,916 |  |  |  |  |  |  |
IBNR Reserves | $ 854 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 117,999 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 837 | 624 | 283 |  |  |  |  |  |  |
Workers’ compensation | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,935 | 1,937 |  |  |  |  |  |  |  |
IBNR Reserves | $ 1,033 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 117,698 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 637 | 291 |  |  |  |  |  |  |  |
Workers’ compensation | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,865 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 1,412 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 84,062 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 223 |  |  |  |  |  |  |  |  |
General liability |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 2,946 |  |  |  |  |  |  |  |  |
General liability | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 416 | 420 | 426 | 417 | 416 | 404 | 405 | 408 | 420 | 431
IBNR Reserves | $ 40 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 22,394 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 368 | 362 | 348 | 330 | 303 | 255 | 200 | 123 | 61 | 15
General liability | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 407 | 413 | 421 | 408 | 410 | 392 | 399 | 402 | 423 |
IBNR Reserves | $ 50 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 16,597 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 332 | 323 | 305 | 280 | 233 | 170 | 101 | 55 | 13 |
General liability | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 508 | 505 | 502 | 488 | 484 | 456 | 442 | 455 |  |
IBNR Reserves | $ 62 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 13,867 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 422 | 398 | 372 | 320 | 233 | 141 | 53 | 13 |  |
General liability | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 515 | 522 | 513 | 494 | 481 | 475 | 506 |  |  |
IBNR Reserves | $ 78 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 14,722 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 402 | 358 | 304 | 214 | 130 | 42 | 15 |  |  |
General liability | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 647 | 633 | 594 | 554 | 560 | 556 |  |  |  |
IBNR Reserves | $ 110 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 15,382 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 477 | 409 | 278 | 156 | 55 | 10 |  |  |  |
General liability | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 632 | 633 | 607 | 583 | 613 |  |  |  |  |
IBNR Reserves | $ 176 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 16,479 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 368 | 283 | 131 | 52 | 12 |  |  |  |  |
General liability | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 616 | 613 | 614 | 626 |  |  |  |  |  |
IBNR Reserves | $ 258 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 15,943 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 255 | 156 | 67 | 15 |  |  |  |  |  |
General liability | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 697 | 669 | 692 |  |  |  |  |  |  |
IBNR Reserves | $ 395 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 16,881 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 177 | 83 | 21 |  |  |  |  |  |  |
General liability | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 826 | 821 |  |  |  |  |  |  |  |
IBNR Reserves | $ 638 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 15,191 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 100 | 29 |  |  |  |  |  |  |  |
General liability | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 937 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 850 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 9,265 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 45 |  |  |  |  |  |  |  |  |
Marine [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,379 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,128 |  |  |  |  |  |  |  |  |
Marine [Member] | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 164 | 164 | 168 | 164 | 163 | 169 | 180 | 220 | 195 |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 6,782 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 158 | 159 | 155 | 152 | 148 | 139 | 125 | 101 | 51 |
Marine [Member] | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 140 | 138 | 135 | 140 | 136 | 134 | 152 | 149 |  |
IBNR Reserves | $ (3) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 6,623 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 133 | 126 | 121 | 119 | 112 | 100 | 82 | 42 |  |
Marine [Member] | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 167 | 169 | 164 | 165 | 158 | 160 | 163 |  |  |
IBNR Reserves | $ (3) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 7,122 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 159 | 156 | 151 | 131 | 116 | 81 | 41 |  |  |
Marine [Member] | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 138 | 133 | 148 | 146 | 146 | 158 |  |  |  |
IBNR Reserves | $ (5) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 10,114 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 139 | 134 | 126 | 116 | 85 | 40 |  |  |  |
Marine [Member] | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 150 | 148 | 138 | 143 | 140 |  |  |  |  |
IBNR Reserves | $ (7) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 13,112 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 132 | 122 | 106 | 80 | 35 |  |  |  |  |
Marine [Member] | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 174 | 175 | 187 | 160 |  |  |  |  |  |
IBNR Reserves | $ (12) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 15,498 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 154 | 142 | 111 | 48 |  |  |  |  |  |
Marine [Member] | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 154 | 161 | 144 |  |  |  |  |  |  |
IBNR Reserves | $ (12) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 13,808 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 138 | 104 | 37 |  |  |  |  |  |  |
Marine [Member] | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 142 | 144 |  |  |  |  |  |  |  |
IBNR Reserves | $ 20 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 7,989 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 83 | 36 |  |  |  |  |  |  |  |
Marine [Member] | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 150 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 76 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 3,451 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 32 |  |  |  |  |  |  |  |  |
Package business |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 5,248 |  |  |  |  |  |  |  |  |
Package business | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 807 | 807 | 812 | 813 | 814 | 808 | 800 | 790 | 792 | 810
IBNR Reserves | $ 24 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 61,097 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 776 | 774 | 772 | 762 | 748 | 727 | 684 | 621 | 555 | 377
Package business | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 732 | 732 | 739 | 735 | 736 | 731 | 728 | 725 | 736 |
IBNR Reserves | $ 30 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 59,871 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 697 | 694 | 687 | 673 | 652 | 616 | 560 | 486 | 286 |
Package business | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 587 | 586 | 592 | 586 | 585 | 573 | 565 | 579 |  |
IBNR Reserves | $ 29 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 43,620 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 549 | 541 | 522 | 504 | 467 | 414 | 339 | 225 |  |
Package business | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 593 | 603 | 603 | 602 | 601 | 578 | 566 |  |  |
IBNR Reserves | $ 44 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 43,207 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 535 | 525 | 507 | 468 | 416 | 345 | 226 |  |  |
Package business | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 581 | 588 | 583 | 585 | 588 | 582 |  |  |  |
IBNR Reserves | $ 56 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 42,121 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 505 | 486 | 445 | 383 | 332 | 212 |  |  |  |
Package business | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 611 | 625 | 632 | 638 | 655 |  |  |  |  |
IBNR Reserves | $ 78 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 43,922 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 500 | 465 | 410 | 353 | 225 |  |  |  |  |
Package business | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 657 | 692 | 702 | 695 |  |  |  |  |  |
IBNR Reserves | $ 114 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 46,366 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 496 | 447 | 372 | 235 |  |  |  |  |  |
Package business | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 688 | 724 | 719 |  |  |  |  |  |  |
IBNR Reserves | $ 169 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 44,273 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 451 | 402 | 237 |  |  |  |  |  |  |
Package business | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 769 | 813 |  |  |  |  |  |  |  |
IBNR Reserves | $ 256 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 41,800 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 413 | 254 |  |  |  |  |  |  |  |
Package business | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 915 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 412 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 56,548 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 326 |  |  |  |  |  |  |  |  |
Property | P&C Commercial Lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 2,936 |  |  |  |  |  |  |  |  |
Property | P&C Commercial Lines | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 332 | 333 | 334 | 335 | 337 | 335 | 334 | 333 | 369 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 26,860 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 330 | 330 | 331 | 331 | 331 | 326 | 317 | 296 | 182 |
Property | P&C Commercial Lines | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 247 | 247 | 248 | 249 | 252 | 254 | 252 | 268 |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 21,610 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 245 | 245 | 244 | 242 | 243 | 238 | 223 | 161 |  |
Property | P&C Commercial Lines | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 280 | 280 | 279 | 280 | 282 | 281 | 293 |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 21,025 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 280 | 279 | 279 | 279 | 270 | 250 | 170 |  |  |
Property | P&C Commercial Lines | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 304 | 305 | 301 | 302 | 301 | 299 |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 21,020 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 303 | 302 | 296 | 285 | 257 | 179 |  |  |  |
Property | P&C Commercial Lines | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 408 | 406 | 399 | 420 | 406 |  |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 23,758 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 401 | 396 | 378 | 342 | 215 |  |  |  |  |
Property | P&C Commercial Lines | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 438 | 455 | 516 | 577 |  |  |  |  |  |
IBNR Reserves | $ 6 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 24,332 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 428 | 412 | 379 | 229 |  |  |  |  |  |
Property | P&C Commercial Lines | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 424 | 437 | 450 |  |  |  |  |  |  |
IBNR Reserves | $ 26 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 21,630 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 379 | 344 | 188 |  |  |  |  |  |  |
Property | P&C Commercial Lines | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 437 | 476 |  |  |  |  |  |  |  |
IBNR Reserves | $ 21 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 20,791 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 349 | 214 |  |  |  |  |  |  |  |
Property | P&C Commercial Lines | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 495 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 162 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 18,628 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 221 |  |  |  |  |  |  |  |  |
Automobile liability | P&C Commercial Lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 2,775 |  |  |  |  |  |  |  |  |
Automobile liability | P&C Commercial Lines | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 363 | 363 | 362 | 363 | 365 | 366 | 356 | 356 | 310 | 272
IBNR Reserves | $ 6 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 39,302 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 355 | 354 | 353 | 348 | 339 | 316 | 274 | 211 | 133 | 63
Automobile liability | P&C Commercial Lines | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 388 | 388 | 387 | 389 | 395 | 402 | 391 | 377 | 311 |
IBNR Reserves | $ 6 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 36,052 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 378 | 376 | 372 | 359 | 346 | 307 | 234 | 143 | 65 |
Automobile liability | P&C Commercial Lines | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 334 | 335 | 339 | 340 | 341 | 334 | 318 | 311 |  |
IBNR Reserves | $ 8 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 32,239 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 323 | 321 | 311 | 295 | 259 | 202 | 130 | 62 |  |
Automobile liability | P&C Commercial Lines | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 333 | 334 | 341 | 337 | 331 | 317 | 309 |  |  |
IBNR Reserves | $ 8 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 29,609 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 318 | 309 | 299 | 252 | 197 | 131 | 59 |  |  |
Automobile liability | P&C Commercial Lines | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 359 | 356 | 356 | 372 | 358 | 308 |  |  |  |
IBNR Reserves | $ 12 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 28,541 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 335 | 314 | 267 | 207 | 142 | 62 |  |  |  |
Automobile liability | P&C Commercial Lines | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 392 | 391 | 390 | 393 | 385 |  |  |  |  |
IBNR Reserves | $ 25 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 29,145 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 339 | 303 | 232 | 147 | 65 |  |  |  |  |
Automobile liability | P&C Commercial Lines | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 383 | 379 | 383 | 372 |  |  |  |  |  |
IBNR Reserves | $ 37 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 26,279 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 285 | 211 | 134 | 60 |  |  |  |  |  |
Automobile liability | P&C Commercial Lines | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 405 | 396 | 349 |  |  |  |  |  |  |
IBNR Reserves | $ 86 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 24,402 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 239 | 153 | 62 |  |  |  |  |  |  |
Automobile liability | P&C Commercial Lines | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 431 | 417 |  |  |  |  |  |  |  |
IBNR Reserves | $ 194 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 24,604 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 153 | 63 |  |  |  |  |  |  |  |
Automobile liability | P&C Commercial Lines | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 416 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 321 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 14,930 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 50 |  |  |  |  |  |  |  |  |
Automobile liability | P&C Personal Lines |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 10,153 |  |  |  |  |  |  |  |  |
Automobile liability | P&C Personal Lines | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,153 | 1,153 | 1,153 | 1,154 | 1,154 | 1,166 | 1,173 | 1,180 | 1,170 | 1,181
IBNR Reserves | $ 4 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 221,891 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,148 | 1,146 | 1,146 | 1,145 | 1,140 | 1,126 | 1,088 | 1,006 | 826 | 447
Automobile liability | P&C Personal Lines | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,129 | 1,130 | 1,130 | 1,130 | 1,133 | 1,142 | 1,146 | 1,149 | 1,141 |
IBNR Reserves | $ 5 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 210,757 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,123 | 1,122 | 1,120 | 1,114 | 1,104 | 1,067 | 986 | 818 | 441 |
Automobile liability | P&C Personal Lines | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,156 | 1,157 | 1,153 | 1,152 | 1,153 | 1,144 | 1,145 | 1,131 |  |
IBNR Reserves | $ 7 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 205,480 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,144 | 1,142 | 1,135 | 1,121 | 1,091 | 1,002 | 816 | 442 |  |
Automobile liability | P&C Personal Lines | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,201 | 1,202 | 1,199 | 1,200 | 1,198 | 1,153 | 1,146 |  |  |
IBNR Reserves | $ 8 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 209,013 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,186 | 1,182 | 1,165 | 1,125 | 1,032 | 843 | 430 |  |  |
Automobile liability | P&C Personal Lines | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,328 | 1,331 | 1,330 | 1,338 | 1,340 | 1,195 |  |  |  |
IBNR Reserves | $ 15 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 216,871 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,304 | 1,292 | 1,243 | 1,142 | 935 | 475 |  |  |  |
Automobile liability | P&C Personal Lines | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,395 | 1,397 | 1,393 | 1,402 | 1,407 |  |  |  |  |
IBNR Reserves | $ 28 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 215,797 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,345 | 1,308 | 1,188 | 968 | 505 |  |  |  |  |
Automobile liability | P&C Personal Lines | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,214 | 1,228 | 1,275 | 1,277 |  |  |  |  |  |
IBNR Reserves | $ 50 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 187,408 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 1,123 | 1,033 | 836 | 441 |  |  |  |  |  |
Automobile liability | P&C Personal Lines | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,072 | 1,104 | 1,108 |  |  |  |  |  |  |
IBNR Reserves | $ 105 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 155,821 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 888 | 710 | 359 |  |  |  |  |  |  |
Automobile liability | P&C Personal Lines | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,010 | 1,018 |  |  |  |  |  |  |  |
IBNR Reserves | $ 220 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 138,430 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 654 | 323 |  |  |  |  |  |  |  |
Automobile liability | P&C Personal Lines | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 805 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 400 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 90,933 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 238 |  |  |  |  |  |  |  |  |
Commercial automobile physical damage |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 167 |  |  |  |  |  |  |  |  |
Commercial automobile physical damage | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 61 | 62 | 62 |  |  |  |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 20,561 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 60 | 60 | 54 |  |  |  |  |  |  |
Commercial automobile physical damage | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 64 | 63 |  |  |  |  |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 19,828 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 62 | 56 |  |  |  |  |  |  |  |
Commercial automobile physical damage | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 51 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 13,796 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 45 |  |  |  |  |  |  |  |  |
Professional liability |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,080 |  |  |  |  |  |  |  |  |
Professional liability | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 217 | 225 | 219 | 221 | 221 | 218 | 238 | 238 | 242 |
IBNR Reserves | $ 11 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 7,036 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 175 | 175 | 172 | 168 | 155 | 139 | 100 | 67 | 17 |
Professional liability | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 171 | 171 | 173 | 174 | 174 | 187 | 195 | 207 |  |
IBNR Reserves | $ 22 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 5,972 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 143 | 137 | 131 | 116 | 88 | 67 | 44 | 10 |  |
Professional liability | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 183 | 182 | 179 | 178 | 181 | 183 | 187 |  |  |
IBNR Reserves | $ 26 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 6,717 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 146 | 135 | 131 | 108 | 74 | 38 | 8 |  |  |
Professional liability | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 207 | 214 | 190 | 179 | 174 | 164 |  |  |  |
IBNR Reserves | $ 40 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 7,215 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 141 | 125 | 107 | 85 | 40 | 9 |  |  |  |
Professional liability | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 196 | 197 | 203 | 176 | 183 |  |  |  |  |
IBNR Reserves | $ 53 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 8,345 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 125 | 112 | 88 | 51 | 8 |  |  |  |  |
Professional liability | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 226 | 232 | 203 | 205 |  |  |  |  |  |
IBNR Reserves | $ 63 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 9,362 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 123 | 88 | 48 | 11 |  |  |  |  |  |
Professional liability | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 277 | 281 | 248 |  |  |  |  |  |  |
IBNR Reserves | $ 101 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 9,913 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 130 | 73 | 15 |  |  |  |  |  |  |
Professional liability | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 317 | 298 |  |  |  |  |  |  |  |
IBNR Reserves | $ 196 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 9,297 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 78 | 21 |  |  |  |  |  |  |  |
Professional liability | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 370 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 325 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 6,236 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 19 |  |  |  |  |  |  |  |  |
Bond |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 310 |  |  |  |  |  |  |  |  |
Bond | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 71 | 72 | 71 | 71 | 71 | 71 | 76 | 78 | 78 | 74
IBNR Reserves | $ 9 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 2,135 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 62 | 61 | 60 | 60 | 60 | 58 | 57 | 52 | 40 | 12
Bond | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 48 | 48 | 45 | 49 | 49 | 55 | 61 | 70 | 71 |
IBNR Reserves | $ 13 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,728 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 35 | 35 | 34 | 26 | 26 | 24 | 26 | 25 | 12 |
Bond | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 34 | 35 | 39 | 49 | 48 | 55 | 58 | 64 |  |
IBNR Reserves | $ 14 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,463 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 20 | 20 | 19 | 19 | 19 | 17 | 9 | 3 |  |
Bond | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 60 | 59 | 59 | 67 | 66 | 67 | 71 |  |  |
IBNR Reserves | $ 13 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,386 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 46 | 45 | 43 | 43 | 40 | 31 | 18 |  |  |
Bond | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 48 | 54 | 60 | 63 | 67 | 67 |  |  |  |
IBNR Reserves | $ 17 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,394 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 32 | 34 | 31 | 24 | 20 | 9 |  |  |  |
Bond | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 52 | 56 | 61 | 61 | 61 |  |  |  |  |
IBNR Reserves | $ 29 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,335 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 22 | 20 | 15 | 12 | 2 |  |  |  |  |
Bond | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 94 | 101 | 90 | 63 |  |  |  |  |  |
IBNR Reserves | $ 34 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,682 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 53 | 55 | 46 | 5 |  |  |  |  |  |
Bond | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 72 | 68 | 68 |  |  |  |  |  |  |
IBNR Reserves | $ 37 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,573 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 23 | 16 | 6 |  |  |  |  |  |  |
Bond | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 73 | 72 |  |  |  |  |  |  |  |
IBNR Reserves | $ 60 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,514 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 13 | 3 |  |  |  |  |  |  |  |
Bond | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 83 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 77 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,505 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 4 |  |  |  |  |  |  |  |  |
Assumed Reinsurance [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,198 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 986 |  |  |  |  |  |  |  |  |
Assumed Reinsurance [Member] | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 120 | 120 | 119 | 120 | 115 | 88 | 93 | 99 | 107 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,441 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 119 | 119 | 118 | 118 | 112 | 85 | 83 | 77 | 38 |
Assumed Reinsurance [Member] | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 104 | 103 | 102 | 102 | 105 | 103 | 119 | 115 |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,647 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 103 | 103 | 101 | 100 | 98 | 91 | 83 | 53 |  |
Assumed Reinsurance [Member] | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 116 | 116 | 115 | 118 | 122 | 142 | 119 |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,760 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 114 | 113 | 112 | 109 | 106 | 119 | 66 |  |  |
Assumed Reinsurance [Member] | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 96 | 95 | 94 | 94 | 92 | 102 |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,497 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 94 | 91 | 83 | 77 | 65 | 42 |  |  |  |
Assumed Reinsurance [Member] | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 102 | 100 | 98 | 91 | 89 |  |  |  |  |
IBNR Reserves | $ (1) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,626 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 95 | 90 | 84 | 66 | 36 |  |  |  |  |
Assumed Reinsurance [Member] | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 157 | 162 | 153 | 129 |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,966 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 145 | 135 | 116 | 44 |  |  |  |  |  |
Assumed Reinsurance [Member] | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 130 | 128 | 129 |  |  |  |  |  |  |
IBNR Reserves | $ (14) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 1,960 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 134 | 112 | 25 |  |  |  |  |  |  |
Assumed Reinsurance [Member] | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 190 | 181 |  |  |  |  |  |  |  |
IBNR Reserves | $ 38 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 2,025 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 132 | 62 |  |  |  |  |  |  |  |
Assumed Reinsurance [Member] | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 183 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 110 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 833 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 50 |  |  |  |  |  |  |  |  |
Personal automobile physical damage |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 1,262 |  |  |  |  |  |  |  |  |
Personal automobile physical damage | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 488 | 498 | 509 |  |  |  |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 305,389 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 488 | 491 | 474 |  |  |  |  |  |  |
Personal automobile physical damage | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 442 | 445 |  |  |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 276,688 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 441 | 427 |  |  |  |  |  |  |  |
Personal automobile physical damage | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 349 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 6 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 199,623 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 333 |  |  |  |  |  |  |  |  |
Homeowners |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 6,435 |  |  |  |  |  |  |  |  |
Homeowners | 2011 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 907 | 907 | 907 | 908 | 911 | 914 | 916 | 919 | 920 | 955
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 179,405 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 907 | 908 | 907 | 908 | 905 | 903 | 899 | 891 | 871 | $ 709
Homeowners | 2012 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 737 | 738 | 738 | 738 | 739 | 741 | 741 | 741 | 774 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 142,855 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 736 | 736 | 735 | 734 | 731 | 727 | 719 | 696 | $ 547 |
Homeowners | 2013 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 630 | 629 | 630 | 632 | 634 | 637 | 638 | 673 |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 113,546 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 628 | 628 | 627 | 626 | 622 | 611 | 590 | $ 467 |  |
Homeowners | 2014 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 698 | 698 | 698 | 700 | 702 | 707 | 710 |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 121,914 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 697 | 697 | 695 | 691 | 684 | 663 | $ 526 |  |  |
Homeowners | 2015 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 684 | 684 | 684 | 690 | 703 | 690 |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 119,981 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 681 | 680 | 674 | 665 | 645 | $ 487 |  |  |  |
Homeowners | 2016 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 658 | 658 | 663 | 673 | 669 |  |  |  |  |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 119,742 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 653 | 649 | 640 | 621 | $ 481 |  |  |  |  |
Homeowners | 2017 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 783 | 884 | 889 | 866 |  |  |  |  |  |
IBNR Reserves | $ 6 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 124,581 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 757 | 795 | 747 | $ 538 |  |  |  |  |  |
Homeowners | 2018 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 673 | 910 | 903 |  |  |  |  |  |  |
IBNR Reserves | $ (11) |  |  |  |  |  |  |  |  |
Claims Reported | claim | 102,603 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 616 | 712 | $ 484 |  |  |  |  |  |  |
Homeowners | 2019 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 475 | 501 |  |  |  |  |  |  |  |
IBNR Reserves | $ 27 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 83,915 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 425 | $ 318 |  |  |  |  |  |  |  |
Homeowners | 2020 |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | 525 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 89 |  |  |  |  |  |  |  |  |
Claims Reported | claim | 82,246 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses & Allocated Loss Adjustment Expenses, Net of Reinsurance | $ 335 |  |  |  |  |  |  |  |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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X
- Definition Amount, after reinsurance, of paid claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671311-158438 + Details
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Period Type: | instant

X
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