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Reserve For Losses, LAE And Future Policy Benefit Reserve (Ultimate Loss and ALAE And Paid Loss And ALAE, Net Of Reinsurance) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | 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
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Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | $ 19,671 |  |  |  |  |  |  |  |  |
Reinsurance [Member] | Casualty Business [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 14,554 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 5,754 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior to 2012, net of reinsurance | 916 |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 9,715 |  |  |  |  |  |  |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2013 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 684 | $ 694 | $ 699 | $ 699 | $ 719 | $ 748 | $ 779 | $ 788 | $ 801 | $ 710
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 11 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 603 | 593 | 565 | 540 | 489 | 383 | 310 | 211 | 121 | 48
Reinsurance [Member] | Casualty Business [Member] | 2014 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 720 | 730 | 732 | 719 | 741 | 783 | 807 | 800 | 762 |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 13 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 607 | 585 | 545 | 501 | 426 | 301 | 212 | 122 | 57 |
Reinsurance [Member] | Casualty Business [Member] | 2015 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 829 | 832 | 832 | 795 | 811 | 814 | 818 | 777 |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 47 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 647 | 611 | 565 | 497 | 408 | 263 | 157 | 57 |  |
Reinsurance [Member] | Casualty Business [Member] | 2016 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 965 | 935 | 933 | 857 | 862 | 865 | 790 |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 91 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 690 | 614 | 539 | 426 | 320 | 187 | 88 |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2017 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 982 | 926 | 918 | 837 | 830 | 870 |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 132 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 677 | 575 | 455 | 316 | 185 | 80 |  |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2018 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,485 | 1,416 | 1,386 | 1,309 | 1,311 |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 354 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 803 | 616 | 456 | 284 | 154 |  |  |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2019 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,775 | 1,751 | 1,748 | 1,683 |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 727 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 718 | 511 | 338 | 208 |  |  |  |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2020 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,846 | 1,867 | 1,896 |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1,178 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 489 | 300 | 190 |  |  |  |  |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2021 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 2,449 | 2,454 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1,829 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 318 | 214 |  |  |  |  |  |  |  |
Reinsurance [Member] | Casualty Business [Member] | 2022 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 2,818 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 2,133 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 200 |  |  |  |  |  |  |  |  |
Reinsurance [Member] | Property Business [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 20,594 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 15,134 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior to 2012, net of reinsurance | 103 |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 5,562 |  |  |  |  |  |  |  |  |
Reinsurance [Member] | Property Business [Member] | 2013 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 757 | 758 | 758 | 760 | 753 | 757 | 763 | 819 | 930 | 1,275
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 2 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 735 | 733 | 733 | 732 | 723 | 713 | 693 | 638 | 510 | 375
Reinsurance [Member] | Property Business [Member] | 2014 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 928 | 930 | 930 | 937 | 933 | 937 | 1,030 | 1,181 | 1,343 |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 3 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 893 | 892 | 891 | 884 | 874 | 842 | 769 | 641 | 366 |
Reinsurance [Member] | Property Business [Member] | 2015 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 943 | 946 | 945 | 952 | 950 | 976 | 1,053 | 1,386 |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 2 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 905 | 900 | 891 | 869 | 842 | 759 | 607 | 377 |  |
Reinsurance [Member] | Property Business [Member] | 2016 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,523 | 1,527 | 1,526 | 1,548 | 1,554 | 1,518 | 1,695 |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 10 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 1,454 | 1,441 | 1,421 | 1,367 | 1,249 | 961 | 469 |  |  |
Reinsurance [Member] | Property Business [Member] | 2017 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 3,703 | 3,692 | 3,647 | 3,518 | 3,407 | 2,784 |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 3 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 3,426 | 3,332 | 3,130 | 2,744 | 2,180 | 819 |  |  |  |
Reinsurance [Member] | Property Business [Member] | 2018 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 2,379 | 2,426 | 2,488 | 2,486 | 2,611 |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 24 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 2,136 | 2,065 | 1,878 | 1,525 | 545 |  |  |  |  |
Reinsurance [Member] | Property Business [Member] | 2019 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,899 | 2,015 | 2,070 | 2,038 |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 29 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 1,667 | 1,505 | 1,185 | 730 |  |  |  |  |  |
Reinsurance [Member] | Property Business [Member] | 2020 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 2,425 | 2,481 | 2,408 |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 240 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 1,733 | 1,321 | 584 |  |  |  |  |  |  |
Reinsurance [Member] | Property Business [Member] | 2021 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 2,780 | 2,754 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 476 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 1,534 | 684 |  |  |  |  |  |  |  |
Reinsurance [Member] | Property Business [Member] | 2022 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 3,257 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1,898 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 652 |  |  |  |  |  |  |  |  |
Insurance [Member] | Casualty Business [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 7,703 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 4,003 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior to 2012, net of reinsurance | 127 |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 3,828 |  |  |  |  |  |  |  |  |
Insurance [Member] | Casualty Business [Member] | 2013 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 347 | 350 | 350 | 351 | 344 | 351 | 393 | 393 | 393 | 393
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 25 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 22,031 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 321 | 317 | 311 | 304 | 286 | 260 | 225 | 176 | 117 | 33
Insurance [Member] | Casualty Business [Member] | 2014 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 398 | 397 | 398 | 397 | 396 | 460 | 454 | 457 | 431 |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 32 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 26,449 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 360 | 350 | 339 | 325 | 297 | 257 | 202 | 125 | 41 |
Insurance [Member] | Casualty Business [Member] | 2015 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 477 | 471 | 471 | 467 | 541 | 535 | 527 | 519 |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 40 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 29,020 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 435 | 413 | 382 | 353 | 292 | 219 | 135 | 44 |  |
Insurance [Member] | Casualty Business [Member] | 2016 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 540 | 538 | 549 | 612 | 579 | 550 | 552 |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 53 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 34,164 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 481 | 443 | 400 | 341 | 268 | 164 | 55 |  |  |
Insurance [Member] | Casualty Business [Member] | 2017 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 629 | 628 | 652 | 620 | 600 | 610 |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 85 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 38,344 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 529 | 453 | 378 | 280 | 172 | 54 |  |  |  |
Insurance [Member] | Casualty Business [Member] | 2018 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 769 | 755 | 742 | 705 | 701 |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 154 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 39,029 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 594 | 443 | 317 | 207 | 63 |  |  |  |  |
Insurance [Member] | Casualty Business [Member] | 2019 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 885 | 876 | 844 | 848 |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 204 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 42,006 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 551 | 397 | 234 | 72 |  |  |  |  |  |
Insurance [Member] | Casualty Business [Member] | 2020 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,043 | 1,049 | 993 |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 416 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 39,545 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 388 | 236 | 66 |  |  |  |  |  |  |
Insurance [Member] | Casualty Business [Member] | 2021 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,246 | 1,189 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 732 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 44,274 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 261 | 109 |  |  |  |  |  |  |  |
Insurance [Member] | Casualty Business [Member] | 2022 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 1,367 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | $ 865 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | 37,739 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 85 |  |  |  |  |  |  |  |  |
Insurance [Member] | Property Business [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 3,789 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 3,223 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior to 2012, net of reinsurance |  |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 566 |  |  |  |  |  |  |  |  |
Insurance [Member] | Property Business [Member] | 2013 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 91 | 98 | 112
Total of IBNR Liabilities Plus Expected Development on Reported Claims |  |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 93 | $ 69
Insurance [Member] | Property Business [Member] | 2014 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 120 | 119 | 119 | 119 | 119 | 119 | 120 | 123 | 132 |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 119 | 119 | 119 | 119 | 118 | 118 | 118 | 116 | $ 82 |
Insurance [Member] | Property Business [Member] | 2015 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 150 | 146 | 146 | 144 | 146 | 144 | 153 | 173 |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 147 | 147 | 146 | 146 | 145 | 142 | 141 | $ 102 |  |
Insurance [Member] | Property Business [Member] | 2016 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 294 | 294 | 292 | 289 | 279 | 274 | 288 |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims |  |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 293 | 293 | 290 | 287 | 271 | 249 | $ 162 |  |  |
Insurance [Member] | Property Business [Member] | 2017 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 504 | 489 | 495 | 492 | 499 | 494 |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims |  |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 499 | 496 | 479 | 457 | 423 | $ 179 |  |  |  |
Insurance [Member] | Property Business [Member] | 2018 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 422 | 407 | 394 | 400 | 405 |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 418 | 404 | 376 | 357 | $ 245 |  |  |  |  |
Insurance [Member] | Property Business [Member] | 2019 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 363 | 351 | 347 | 347 |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 1 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 357 | 339 | 315 | $ 227 |  |  |  |  |  |
Insurance [Member] | Property Business [Member] | 2020 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 498 | 507 | 599 |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 27 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 453 | 416 | $ 293 |  |  |  |  |  |  |
Insurance [Member] | Property Business [Member] | 2021 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 579 | 646 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 66 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | 473 | $ 328 |  |  |  |  |  |  |  |
Insurance [Member] | Property Business [Member] | 2022 [Member] |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance | 767 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Claims | 273 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance | $ 372 |  |  |  |  |  |  |  |  |

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