XML 113 R96.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Insurance - Short-duration insurance contracts, claims development (Details) - Property and casualty insurance $ in Millions | Dec. 31, 2017 USD ($) claim | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2009 USD ($) | Dec. 31, 2008 USD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 19,503 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | 14,838 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE — 11th year and prior (excluding unallocated LAE) |  | 533 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | 5,198 |  |  |  |  |  |  |  |  |
Accident Year 2008 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 1,950 | $ 1,951 | $ 1,947 | $ 1,953 | $ 1,955 | $ 1,978 | $ 1,971 | $ 1,987 | $ 2,018 | $ 2,067
Total IBNR Plus Expected Development on Reported Claims |  | $ 46 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 244,447 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,866 | 1,847 | 1,828 | 1,803 | 1,765 | 1,701 | 1,607 | 1,459 | 1,230 | 627
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 95.70% |  |  |  |  |  |  |  |  |
Accident Year 2009 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,529 | 1,539 | 1,543 | 1,545 | 1,552 | 1,566 | 1,596 | 1,607 | 1,624 |
Total IBNR Plus Expected Development on Reported Claims |  | $ 58 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 221,165 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,435 | 1,424 | 1,404 | 1,370 | 1,308 | 1,216 | 1,079 | 871 | 509 |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 93.90% |  |  |  |  |  |  |  |  |
Accident Year 2010 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,690 | 1,698 | 1,698 | 1,710 | 1,690 | 1,705 | 1,710 | 1,724 |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 75 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 215,418 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,580 | 1,562 | 1,536 | 1,485 | 1,387 | 1,220 | 1,005 | 576 |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 93.50% |  |  |  |  |  |  |  |  |
Accident Year 2011 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,859 | 1,866 | 1,861 | 1,871 | 1,849 | 1,848 | 1,840 |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 98 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 207,643 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,711 | 1,682 | 1,629 | 1,534 | 1,389 | 1,181 | 609 |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 92.00% |  |  |  |  |  |  |  |  |
Accident Year 2012 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,941 | 1,955 | 1,947 | 1,946 | 1,952 | 1,970 |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 142 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 217,516 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,735 | 1,675 | 1,579 | 1,418 | 1,214 | 824 |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 89.40% |  |  |  |  |  |  |  |  |
Accident Year 2013 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 2,000 | 1,996 | 2,000 | 2,011 | 2,036 |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 168 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 219,940 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,714 | 1,617 | 1,443 | 1,214 | 697 |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 85.70% |  |  |  |  |  |  |  |  |
Accident Year 2014 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 2,038 | 2,040 | 2,050 | 2,083 |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 272 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 218,032 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,588 | 1,422 | 1,173 | 594 |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 77.90% |  |  |  |  |  |  |  |  |
Accident Year 2015 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 2,040 | 2,046 | 2,114 |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 363 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 225,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,403 | 1,128 | 619 |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 68.80% |  |  |  |  |  |  |  |  |
Accident Year 2016 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 2,082 | 2,116 |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 593 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 216,248 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 1,098 | 576 |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 52.70% |  |  |  |  |  |  |  |  |
Accident Year 2017 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 2,374 |  |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 1,119 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 210,970 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 708 |  |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [1] | 29.80% |  |  |  |  |  |  |  |  |
Excludes short-duration insurance contracts detail for accident years not separately presented |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | $ 4,665 |  |  |  |  |  |  |  |  |
Property and transportation |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 8,029 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | 6,980 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE — 11th year and prior (excluding unallocated LAE) |  | 20 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | 1,069 |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2008 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 854 | 854 | 856 | 855 | 854 | 856 | 853 | 852 | 871 | 923
Total IBNR Plus Expected Development on Reported Claims |  | $ 1 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 157,164 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 848 | 847 | 846 | 846 | 835 | 824 | 799 | 761 | 706 | 352
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 99.30% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2009 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 508 | 508 | 508 | 511 | 511 | 516 | 523 | 506 | 526 |
Total IBNR Plus Expected Development on Reported Claims |  | $ 3 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 140,532 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 502 | 499 | 497 | 493 | 479 | 456 | 413 | 348 | 229 |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 98.80% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2010 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 680 | 683 | 679 | 679 | 676 | 668 | 662 | 702 |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 6 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 140,634 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 669 | 665 | 660 | 649 | 618 | 556 | 505 | 328 |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 98.40% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2011 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 865 | 868 | 856 | 845 | 831 | 816 | 830 |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 10 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 140,418 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 847 | 840 | 821 | 787 | 742 | 679 | 373 |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 97.90% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2012 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 918 | 922 | 909 | 897 | 884 | 890 |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 19 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 146,630 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 883 | 868 | 841 | 793 | 725 | 582 |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 96.20% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2013 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 910 | 908 | 902 | 898 | 911 |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 22 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 142,249 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 862 | 831 | 784 | 721 | 449 |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 94.70% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2014 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 843 | 841 | 852 | 868 |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 38 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 136,882 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 765 | 711 | 646 | 337 |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 90.70% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2015 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 798 | 804 | 842 |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 54 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 135,029 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 683 | 595 | 367 |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 85.60% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2016 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 740 | 771 |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 110 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 122,112 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 534 | 299 |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 72.20% |  |  |  |  |  |  |  |  |
Property and transportation | Accident Year 2017 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 913 |  |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 273 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 128,455 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 387 |  |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [2] | 42.40% |  |  |  |  |  |  |  |  |
Property and transportation | Excludes short-duration insurance contracts detail for accident years not separately presented |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | $ 1,049 |  |  |  |  |  |  |  |  |
Specialty casualty |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 9,355 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | 6,155 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE — 11th year and prior (excluding unallocated LAE) |  | 430 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | 3,630 |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2008 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 854 | 855 | 849 | 855 | 856 | 871 | 860 | 874 | 891 | 905
Total IBNR Plus Expected Development on Reported Claims |  | $ 41 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 59,991 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 782 | 768 | 751 | 727 | 702 | 653 | 588 | 490 | 355 | 162
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 91.60% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2009 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 803 | 807 | 812 | 811 | 816 | 826 | 845 | 867 | 864 |
Total IBNR Plus Expected Development on Reported Claims |  | $ 48 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 53,192 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 722 | 713 | 698 | 673 | 636 | 575 | 494 | 366 | 160 |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 89.90% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2010 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 842 | 845 | 846 | 856 | 842 | 864 | 863 | 847 |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 65 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 52,855 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 748 | 734 | 712 | 676 | 623 | 539 | 393 | 179 |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 88.80% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2011 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 806 | 808 | 814 | 828 | 819 | 831 | 831 |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 73 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 50,851 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 694 | 674 | 643 | 595 | 506 | 369 | 165 |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 86.10% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2012 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 849 | 855 | 859 | 859 | 865 | 874 |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 104 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 49,836 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 696 | 658 | 596 | 495 | 368 | 163 |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 82.00% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2013 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 913 | 910 | 915 | 921 | 938 |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 132 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 49,412 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 698 | 638 | 530 | 377 | 171 |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 76.50% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2014 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 982 | 984 | 984 | 1,011 |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 202 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 52,167 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 659 | 556 | 398 | 182 |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 67.10% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2015 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,022 | 1,023 | 1,057 |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 268 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 52,846 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 560 | 398 | 170 |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 54.80% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2016 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,098 | 1,105 |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 426 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 50,652 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 404 | 181 |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 36.80% |  |  |  |  |  |  |  |  |
Specialty casualty | Accident Year 2017 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 1,186 |  |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 715 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 46,399 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 192 |  |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [3] | 16.20% |  |  |  |  |  |  |  |  |
Specialty casualty | Excludes short-duration insurance contracts detail for accident years not separately presented |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | $ 3,200 |  |  |  |  |  |  |  |  |
Specialty financial |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 1,624 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | 1,403 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE — 11th year and prior (excluding unallocated LAE) |  | 0 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | 221 |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2008 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 199 | 198 | 197 | 198 | 199 | 203 | 209 | 212 | 207 | 190
Total IBNR Plus Expected Development on Reported Claims |  | $ 1 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 27,292 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 197 | 194 | 194 | 193 | 191 | 189 | 189 | 185 | 153 | 103
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 99.00% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2009 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 185 | 186 | 187 | 186 | 188 | 184 | 187 | 193 | 193 |
Total IBNR Plus Expected Development on Reported Claims |  | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 27,441 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 186 | 186 | 185 | 182 | 171 | 166 | 157 | 145 | 112 |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 100.50% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2010 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 128 | 130 | 133 | 135 | 133 | 133 | 146 | 139 |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 2 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 21,929 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 127 | 128 | 131 | 133 | 122 | 104 | 93 | 61 |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 99.20% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2011 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 144 | 146 | 148 | 155 | 157 | 158 | 140 |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 11 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 16,374 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 133 | 132 | 131 | 124 | 116 | 113 | 59 |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 92.40% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2012 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 135 | 137 | 139 | 151 | 163 | 164 |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 11 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 21,050 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 126 | 121 | 117 | 109 | 104 | 71 |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 93.30% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2013 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 127 | 131 | 137 | 145 | 141 |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 9 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 28,279 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 117 | 114 | 107 | 100 | 70 |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 92.10% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2014 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 154 | 156 | 157 | 146 |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 16 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 28,983 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 128 | 125 | 108 | 62 |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 83.10% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2015 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 157 | 159 | 156 |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 21 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 37,125 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 129 | 109 | 72 |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 82.20% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2016 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 183 | 179 |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 26 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 43,484 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 141 | 87 |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 77.00% |  |  |  |  |  |  |  |  |
Specialty financial | Accident Year 2017 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 212 |  |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 84 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim |  | 36,116 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 119 |  |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [4] | 56.10% |  |  |  |  |  |  |  |  |
Specialty financial | Excludes short-duration insurance contracts detail for accident years not separately presented |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | $ 221 |  |  |  |  |  |  |  |  |
Other specialty |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 495 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | 300 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE — 11th year and prior (excluding unallocated LAE) |  | 83 |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | 278 |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2008 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | 43 | 44 | 45 | 45 | 46 | 48 | 49 | 49 | 49 | 49
Total IBNR Plus Expected Development on Reported Claims |  | $ 3 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 39 | 38 | 37 | 37 | 37 | 35 | 31 | 23 | 16 | $ 10
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 90.70% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2009 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 33 | 38 | 36 | 37 | 37 | 40 | 41 | 41 | 41 |
Total IBNR Plus Expected Development on Reported Claims |  | $ 7 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 25 | 26 | 24 | 22 | 22 | 19 | 15 | 12 | $ 8 |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 75.80% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2010 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 40 | 40 | 40 | 40 | 39 | 40 | 39 | 36 |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 2 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 36 | 35 | 33 | 27 | 24 | 21 | 14 | $ 8 |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 90.00% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2011 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 44 | 44 | 43 | 43 | 42 | 43 | 39 |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 4 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 37 | 36 | 34 | 28 | 25 | 20 | $ 12 |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 84.10% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2012 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 39 | 41 | 40 | 39 | 40 | 42 |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 8 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 30 | 28 | 25 | 21 | 17 | $ 8 |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 76.90% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2013 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 50 | 47 | 46 | 47 | 46 |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 5 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 37 | 34 | 22 | 16 | $ 7 |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 74.00% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2014 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 59 | 59 | 57 | 58 |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 16 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 36 | 30 | 21 | $ 13 |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 61.00% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2015 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 63 | 60 | 59 |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 20 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 31 | 26 | $ 10 |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 49.20% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2016 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 61 | 61 |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 31 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 19 | $ 9 |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 31.10% |  |  |  |  |  |  |  |  |
Other specialty | Accident Year 2017 |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated LAE, Net of Reinsurance |  | $ 63 |  |  |  |  |  |  |  |  |
Total IBNR Plus Expected Development on Reported Claims |  | $ 47 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | [5] | 0 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance |  | $ 10 |  |  |  |  |  |  |  |  |
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance | [6] | 15.90% |  |  |  |  |  |  |  |  |
Other specialty | Excludes short-duration insurance contracts detail for accident years not separately presented |  |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE) |  | $ 195 |  |  |  |  |  |  |  |  |
[1] | Represents the cumulative percentage paid of incurred claims and allocated LAE (net of reinsurance, as estimated at December 31, 2017).
[2] | Represents the cumulative percentage paid of incurred claims and allocated LAE (net of reinsurance, as estimated at December 31, 2017).
[3] | Represents the cumulative percentage paid of incurred claims and allocated LAE (net of reinsurance, as estimated at December 31, 2017).
[4] | Represents the cumulative percentage paid of incurred claims and allocated LAE (net of reinsurance, as estimated at December 31, 2017).
[5] | The amounts shown in Other specialty represent business assumed by AFG’s internal reinsurance program from the operations that make up AFG’s other Specialty property and casualty insurance sub-segments. Accordingly, the liability for incurred claims and allocated LAE represents additional reserves held on claims counted in the tables provided for the other sub-segments (above).
[6] | Represents the cumulative percentage paid of incurred claims and allocated LAE (net of reinsurance, as estimated at December 31, 2017).

X
- Definition The cumulative percentage paid of incurred claims and allocated LAE, net of reinsurance. + References No definition available. + Details
Name: | afg_ShortdurationInsuranceContractsCumulativePercentagePaidofIncurredClaimsandAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | afg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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
Name: | us-gaap_ClaimsDevelopmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of incurred-but-not-reported (IBNR) liabilities plus expected development on reported claims, for claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671317-158438 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671321-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of incurred claims and allocated claim adjustment expense used in claims development for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671315-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts for accident years not separately presented in claim development information. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of reported claims for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671317-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsNumberOfReportedClaims
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=afg_PropertyAndCasualtyInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2008Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2009Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2010Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2011Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2012Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2013Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortdurationInsuranceContractsAccidentYear2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractsAccidentYear2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsClaimDurationAxis=afg_ExcludesShortdurationInsuranceContractsLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseNotSeparatelyPresentedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=afg_SpecialtyPropertyAndTransportationInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=afg_SpecialtyCasualtyInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=afg_SpecialtyFinancialInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=afg_SpecialtyOtherInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |