XML 141 R118.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Insurance Liabilities - Undiscounted, Incurred and Paid Losses and Allocated Loss Adjustment Expenses (Details) $ in Millions | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) claim | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | $ 254 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (120) |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 7,083 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (273) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (3,954) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 6,766 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 3,806 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 4,145 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 7,422 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (205) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | $ (71) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 11.90% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 17.50% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 11.00% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 7.50% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 4.50% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 3.30% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 2.70% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 1.20% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 1.40% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 1.50% |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 71 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (3,708) |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (214) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 68 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,464 | $ 1,592 | $ 1,612 | $ 1,634 | $ 1,675 | $ 1,722 | $ 1,814 | $ 1,866 | $ 1,864 | $ 1,708
2024 Prior Year Development Excluding the Impact of ADC | (128) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 179 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 37,763 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ (317) |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | (144) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,147 | 1,154 | 1,092 | 1,041 | 1,105 | 1,134 | 1,318 | 1,279 | 1,279 |
Total of IBNR Liabilities Net of Impact of ADC | 35 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,080 | 1,058 | 1,038 | 1,013 | 979 | 925 | 854 | 725 | 524 | 234
Prior Year Development Net of External Reinsurance After ADC Cessions | (7) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | (71) |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (317) | (438) | (520) | (593) | (570) | (588) | (496) | (587) | (585) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 121 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 986 | 1,025 | 1,036 | 1,075 | 1,090 | 1,140 | 1,318 | 1,346 | 1,299 |
2024 Prior Year Development Excluding the Impact of ADC | (39) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 178 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 32,178 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 986 | 1,025 | 1,036 | 1,075 | 1,090 | 1,140 | 1,318 | 1,346 | 1,299 |
Total of IBNR Liabilities Net of Impact of ADC | 178 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 708 | 694 | 686 | 662 | 630 | 584 | 521 | 378 | 147 |
Prior Year Development Net of External Reinsurance After ADC Cessions | (39) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2016 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 673 | 705 | 712 | 731 | 763 | 776 | 850 | 789 |  |
2024 Prior Year Development Excluding the Impact of ADC | (32) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 176 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 28,057 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 673 | 705 | 712 | 731 | 763 | 776 | 850 | 789 |  |
Total of IBNR Liabilities Net of Impact of ADC | 176 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 402 | 395 | 389 | 367 | 333 | 294 | 224 | 93 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (32) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2017 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 786 | 875 | 896 | 911 | 961 | 1,021 | 998 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (89) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 200 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 22,484 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 786 | 875 | 896 | 911 | 961 | 1,021 | 998 |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 200 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 448 | 409 | 388 | 359 | 296 | 215 | 85 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (89) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2018 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 730 | 788 | 801 | 812 | 873 | 887 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (58) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 218 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 17,292 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 730 | 788 | 801 | 812 | 873 | 887 |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 218 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 417 | 389 | 347 | 301 | 219 | 93 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (58) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2019 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 434 | 477 | 521 | 573 | 597 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (43) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 104 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 14,124 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 434 | 477 | 521 | 573 | 597 |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 104 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 259 | 245 | 205 | 159 | 64 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (43) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2020 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 514 | 545 | 570 | 597 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (31) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 212 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 11,293 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 514 | 545 | 570 | 597 |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 212 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 211 | 171 | 128 | 60 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (31) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2021 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 464 | 493 | 523 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (29) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 209 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 9,829 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 464 | 493 | 523 |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 209 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 143 | 102 | 45 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (29) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2022 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 465 | 500 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (35) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 273 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 8,954 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 465 | 500 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 273 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 103 | 38 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (35) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2023 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 567 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 455 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 6,285 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 567 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 455 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 35 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions |  |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | 2024 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (484) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (317) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 6,766 | 6,562 | 6,151 | 5,740 | 5,389 | 4,958 | 4,484 | 3,414 | 2,578 |
Prior Year Development Net of External Reinsurance After ADC Cessions | (363) |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Short Duration Insurance Contracts Last Ten Accident Years | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (317) | (438) | (520) | (593) | (570) | (588) | (496) | (587) | (585) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 121 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Incurred Impact Of Adverse Development Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 71 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (3,708) |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (187) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (26) |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Short Duration Insurance Contracts Accident Years Prior To 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 161 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Net Of Impact Of Adverse Development Reinsurance Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 3,735 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 437 |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 184 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 3,468 |  |  |  |  |  |  |  |  |
U.S. Workers' Compensation (before discount) | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 398 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 7,409 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 545 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (1,955) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 6,875 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 4,350 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 2,104 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 5,163 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 238 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | $ (197) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 1.10% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 10.10% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 8.90% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 19.50% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 10.80% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 7.20% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 6.10% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 7.90% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 3.10% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 2.00% |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 197 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (1,618) |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (57) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (307) |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,723 | 1,658 | 1,686 | 1,721 | 1,694 | 1,656 | 1,603 | 1,440 | 1,463 | 989
2024 Prior Year Development Excluding the Impact of ADC | 65 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 258 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 3,269 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ (534) |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | (131) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,189 | 1,196 | 1,174 | 1,231 | 1,211 | 1,163 | 1,139 | 1,015 | 1,027 |
Total of IBNR Liabilities Net of Impact of ADC | 127 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,325 | 1,291 | 1,253 | 1,124 | 1,061 | 935 | 718 | 391 | 210 | 9
Prior Year Development Net of External Reinsurance After ADC Cessions | (7) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | (197) |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (534) | (462) | (512) | (490) | (483) | (493) | (464) | (425) | (436) |
Prior Year Development Net of External Reinsurance After ADC Cessions | (72) |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,317 | 1,276 | 1,263 | 1,250 | 1,274 | 1,171 | 1,162 | 1,146 | 898 |
2024 Prior Year Development Excluding the Impact of ADC | 41 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 343 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 2,970 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,317 | 1,276 | 1,263 | 1,250 | 1,274 | 1,171 | 1,162 | 1,146 | 898 |
Total of IBNR Liabilities Net of Impact of ADC | 343 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 851 | 798 | 670 | 566 | 502 | 388 | 204 | 80 | 28 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 41 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2016 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,228 | 1,182 | 1,200 | 1,157 | 1,153 | 1,097 | 1,002 | 856 |  |
2024 Prior Year Development Excluding the Impact of ADC | 46 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 227 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 2,252 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,228 | 1,182 | 1,200 | 1,157 | 1,153 | 1,097 | 1,002 | 856 |  |
Total of IBNR Liabilities Net of Impact of ADC | 227 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 860 | 781 | 676 | 585 | 505 | 156 | 45 | 1 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 46 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2017 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 779 | 779 | 769 | 769 | 721 | 646 | 648 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 149 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,613 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 779 | 779 | 769 | 769 | 721 | 646 | 648 |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 149 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 527 | 494 | 414 | 315 | 227 | 125 | 1 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2018 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 604 | 600 | 612 | 597 | 583 | 577 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 4 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 279 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,469 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 604 | 600 | 612 | 597 | 583 | 577 |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 279 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 253 | 216 | 157 | 79 | 43 | 7 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 4 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2019 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 404 | 420 | 410 | 413 | 406 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (16) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 194 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,438 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 404 | 420 | 410 | 413 | 406 |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 194 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 188 | 128 | 33 | 15 | 4 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (16) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2020 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 358 | 274 | 277 | 278 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 84 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 154 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,039 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 358 | 274 | 277 | 278 |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 154 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 161 | 62 | 43 | 4 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 84 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2021 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 333 | 305 | 305 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 28 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 156 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 690 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 333 | 305 | 305 |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 156 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 96 | 51 | 14 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 28 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2022 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 348 | 345 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 3 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 210 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 567 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 348 | 345 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 210 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 89 | 1 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 3 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2023 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 315 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 302 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 235 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 315 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 302 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions |  |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | 2024 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 255 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (534) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 6,875 | 6,377 | 6,010 | 5,695 | 5,348 | 4,654 | 3,951 | 3,017 | 1,925 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 183 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Short Duration Insurance Contracts Last Ten Accident Years | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (534) | (462) | (512) | (490) | (483) | (493) | (464) | (425) | (436) |
Prior Year Development Net of External Reinsurance After ADC Cessions | (72) |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Incurred Impact Of Adverse Development Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 197 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (1,618) |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 217 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 39 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Short Duration Insurance Contracts Accident Years Prior To 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (178) |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Net Of Impact Of Adverse Development Reinsurance Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | (4,153) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 486 |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 16 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 3,208 |  |  |  |  |  |  |  |  |
U.S. Excess Casualty | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 73 |  |  |  |  |  |  |  |  |
U.S. Other Casualty |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 9,520 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 12 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (998) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 9,247 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 5,435 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 1,300 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 5,385 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 44 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | $ (194) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 5.20% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 9.70% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 13.80% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 14.00% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 13.30% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 8.70% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 7.80% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 4.00% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 3.50% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 0.60% |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 194 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (919) |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (28) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 32 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,770 | 1,796 | 1,815 | 1,824 | 1,834 | 1,794 | 1,736 | 1,829 | 1,762 | 1,329
2024 Prior Year Development Excluding the Impact of ADC | (26) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 6 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 35,881 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ (273) |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | (3) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,497 | 1,514 | 1,563 | 1,562 | 1,553 | 1,493 | 1,423 | 1,373 | 1,361 |
Total of IBNR Liabilities Net of Impact of ADC | 3 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,717 | 1,707 | 1,680 | 1,603 | 1,485 | 1,351 | 1,087 | 769 | 309 | 105
Prior Year Development Net of External Reinsurance After ADC Cessions | (17) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | (194) |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (273) | (282) | (252) | (262) | (281) | (301) | (313) | (456) | (401) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 9 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,264 | 1,297 | 1,293 | 1,323 | 1,340 | 1,391 | 1,321 | 1,343 | 1,339 |
2024 Prior Year Development Excluding the Impact of ADC | (33) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 69 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 29,391 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,264 | 1,297 | 1,293 | 1,323 | 1,340 | 1,391 | 1,321 | 1,343 | 1,339 |
Total of IBNR Liabilities Net of Impact of ADC | 69 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,144 | 1,074 | 1,018 | 938 | 846 | 703 | 489 | 298 | 77 |
Prior Year Development Net of External Reinsurance After ADC Cessions | (33) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2016 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 662 | 654 | 643 | 668 | 674 | 738 | 629 | 602 |  |
2024 Prior Year Development Excluding the Impact of ADC | 8 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 14 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 21,382 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 662 | 654 | 643 | 668 | 674 | 738 | 629 | 602 |  |
Total of IBNR Liabilities Net of Impact of ADC | 14 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 613 | 592 | 527 | 455 | 314 | 216 | 111 | 51 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 8 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2017 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 841 | 810 | 824 | 870 | 837 | 845 | 802 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 31 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 154 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 17,096 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 841 | 810 | 824 | 870 | 837 | 845 | 802 |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 154 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 636 | 565 | 470 | 360 | 227 | 122 | 43 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 31 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2018 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,024 | 1,039 | 1,062 | 1,053 | 1,058 | 1,059 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (15) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 469 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 21,383 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,024 | 1,039 | 1,062 | 1,053 | 1,058 | 1,059 |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 469 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 474 | 410 | 321 | 226 | 138 | 53 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (15) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2019 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 519 | 540 | 538 | 576 | 524 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (21) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 223 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 11,622 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 519 | 540 | 538 | 576 | 524 |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 223 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 252 | 198 | 139 | 73 | 26 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (21) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2020 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 818 | 790 | 793 | 795 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 28 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 470 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 11,249 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 818 | 790 | 793 | 795 |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 470 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 265 | 169 | 87 | 32 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 28 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2021 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 827 | 819 | 793 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 8 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 530 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 13,636 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 827 | 819 | 793 |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 530 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 195 | 112 | 38 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 8 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2022 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 955 | 933 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 22 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 781 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 13,687 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 955 | 933 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 781 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 102 | 36 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 22 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2023 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 840 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 754 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 9,070 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 840 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 754 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 37 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions |  |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | 2024 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 2 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (273) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 9,247 | 8,396 | 7,509 | 6,847 | 5,986 | 5,526 | 4,175 | 3,318 | 2,700 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 11 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Short Duration Insurance Contracts Last Ten Accident Years | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (273) | (282) | (252) | (262) | (281) | (301) | (313) | (456) | (401) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 9 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Incurred Impact Of Adverse Development Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 194 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (919) |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (14) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 37 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Short Duration Insurance Contracts Accident Years Prior To 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 51 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Net Of Impact Of Adverse Development Reinsurance Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | (5,241) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 381 |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (4) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 4,387 |  |  |  |  |  |  |  |  |
U.S. Other Casualty | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 24 |  |  |  |  |  |  |  |  |
U.S. Financial Lines |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 16,431 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 51 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (514) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 15,946 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 10,922 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 427 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 5,936 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (40) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | $ (367) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 3.90% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 14.00% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 16.00% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 15.00% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 12.30% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 8.50% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 6.90% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 6.20% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 4.00% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 0.70% |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 367 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (396) |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (13) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (91) |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,039 | 2,048 | 2,044 | 1,959 | 1,874 | 1,830 | 1,788 | 1,743 | 1,762 | 1,737
2024 Prior Year Development Excluding the Impact of ADC | (9) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 63 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 16,263 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ (485) |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | (50) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,554 | 1,553 | 1,605 | 1,595 | 1,550 | 1,552 | 1,462 | 1,430 | 1,429 |
Total of IBNR Liabilities Net of Impact of ADC | 13 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,929 | 1,914 | 1,818 | 1,686 | 1,488 | 1,282 | 1,055 | 791 | 390 | 63
Prior Year Development Net of External Reinsurance After ADC Cessions | 1 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | (367) |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (485) | (495) | (439) | (364) | (324) | (278) | (326) | (313) | (333) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 10 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,322 | 2,308 | 2,325 | 2,281 | 2,139 | 2,064 | 1,993 | 1,855 | 1,605 |
2024 Prior Year Development Excluding the Impact of ADC | 14 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 112 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 16,138 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,322 | 2,308 | 2,325 | 2,281 | 2,139 | 2,064 | 1,993 | 1,855 | 1,605 |
Total of IBNR Liabilities Net of Impact of ADC | 112 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,115 | 2,039 | 1,903 | 1,826 | 1,659 | 1,358 | 1,002 | 499 | 73 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 14 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2016 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,969 | 1,957 | 1,987 | 1,898 | 1,846 | 1,756 | 1,675 | 1,564 |  |
2024 Prior Year Development Excluding the Impact of ADC | 12 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 121 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 15,287 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,969 | 1,957 | 1,987 | 1,898 | 1,846 | 1,756 | 1,675 | 1,564 |  |
Total of IBNR Liabilities Net of Impact of ADC | 121 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,777 | 1,653 | 1,515 | 1,396 | 1,118 | 761 | 391 | 64 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 12 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2017 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,282 | 2,322 | 2,225 | 2,063 | 1,882 | 1,766 | 1,640 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (40) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 354 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 14,857 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,282 | 2,322 | 2,225 | 2,063 | 1,882 | 1,766 | 1,640 |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 354 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,776 | 1,601 | 1,415 | 1,126 | 835 | 486 | 86 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (40) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2018 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,945 | 1,912 | 1,926 | 1,627 | 1,536 | 1,503 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 33 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 358 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 13,381 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,945 | 1,912 | 1,926 | 1,627 | 1,536 | 1,503 |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 358 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,423 | 1,204 | 953 | 642 | 367 | 94 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 33 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2019 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,470 | 1,457 | 1,408 | 1,252 | 1,213 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 13 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 260 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 10,461 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,470 | 1,457 | 1,408 | 1,252 | 1,213 |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 260 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,063 | 915 | 648 | 356 | 84 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 13 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2020 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,316 | 1,388 | 1,408 | 1,430 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (72) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 700 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 7,226 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,316 | 1,388 | 1,408 | 1,430 |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 700 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 468 | 315 | 151 | 43 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (72) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2021 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,105 | 1,108 | 1,130 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (3) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 857 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 5,939 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,105 | 1,108 | 1,130 |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 857 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 177 | 109 | 30 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (3) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2022 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,041 | 1,043 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (2) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 800 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 6,997 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,041 | 1,043 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 800 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 150 | 46 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (2) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2023 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 942 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 851 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 7,258 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 942 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 851 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 44 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions |  |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | 2024 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (54) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (485) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 15,946 | 15,048 | 14,014 | 12,146 | 10,166 | 8,641 | 6,770 | 4,849 | 3,034 |
Prior Year Development Net of External Reinsurance After ADC Cessions | (44) |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Short Duration Insurance Contracts Last Ten Accident Years | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (485) | (495) | (439) | (364) | (324) | (278) | (326) | (313) | (333) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 10 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Incurred Impact Of Adverse Development Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 367 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (396) |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 92 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 4 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Short Duration Insurance Contracts Accident Years Prior To 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (88) |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Net Of Impact Of Adverse Development Reinsurance Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | (10,555) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 31 |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 0 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 5,422 |  |  |  |  |  |  |  |  |
U.S. Financial Lines | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 13 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 27,783 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (44) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (179) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 27,686 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 23,702 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 395 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 4,476 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 4 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | $ (70) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 35.60% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 31.10% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 10.90% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 7.10% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 5.10% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 2.80% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 2.20% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 1.60% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 1.90% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 0.20% |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 70 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (152) |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (1) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 48 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,484 | 2,493 | 2,490 | 2,479 | 2,471 | 2,466 | 2,492 | 2,489 | 2,506 | 2,567
2024 Prior Year Development Excluding the Impact of ADC | (9) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 4 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 59,598 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ (97) |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | (3) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,387 | 2,393 | 2,375 | 2,372 | 2,372 | 2,372 | 2,405 | 2,391 | 2,365 |
Total of IBNR Liabilities Net of Impact of ADC | 1 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,462 | 2,457 | 2,391 | 2,344 | 2,308 | 2,240 | 2,121 | 1,878 | 1,572 | 844
Prior Year Development Net of External Reinsurance After ADC Cessions | (6) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | (70) |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (97) | (100) | (115) | (107) | (99) | (94) | (87) | (98) | (141) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 3 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,727 | 2,713 | 2,700 | 2,694 | 2,707 | 2,697 | 2,690 | 2,748 | 2,674 |
2024 Prior Year Development Excluding the Impact of ADC | 14 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 8 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 54,893 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,727 | 2,713 | 2,700 | 2,694 | 2,707 | 2,697 | 2,690 | 2,748 | 2,674 |
Total of IBNR Liabilities Net of Impact of ADC | 8 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,679 | 2,647 | 2,616 | 2,539 | 2,464 | 2,296 | 2,076 | 1,747 | 821 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 14 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2016 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 4,187 | 4,175 | 4,212 | 4,173 | 4,153 | 4,127 | 4,239 | 4,569 |  |
2024 Prior Year Development Excluding the Impact of ADC | 12 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 12 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 79,846 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 4,187 | 4,175 | 4,212 | 4,173 | 4,153 | 4,127 | 4,239 | 4,569 |  |
Total of IBNR Liabilities Net of Impact of ADC | 12 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 4,129 | 4,055 | 3,999 | 3,897 | 3,638 | 3,281 | 2,625 | 1,137 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 12 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2017 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 3,204 | 3,210 | 3,201 | 3,229 | 2,992 | 2,993 | 2,978 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (6) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 49 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 70,122 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 3,204 | 3,210 | 3,201 | 3,229 | 2,992 | 2,993 | 2,978 |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 49 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 3,094 | 2,994 | 2,863 | 2,715 | 2,509 | 2,162 | 977 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (6) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2018 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,198 | 2,177 | 2,222 | 2,211 | 2,146 | 2,177 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 21 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 34 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 78,995 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,198 | 2,177 | 2,222 | 2,211 | 2,146 | 2,177 |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 34 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,124 | 2,083 | 2,037 | 1,906 | 1,673 | 1,039 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 21 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2019 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 3,269 | 3,238 | 3,280 | 3,320 | 3,391 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 31 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 645 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 68,891 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 3,269 | 3,238 | 3,280 | 3,320 | 3,391 |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 645 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,414 | 2,190 | 1,874 | 1,613 | 844 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 31 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2020 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,190 | 2,160 | 2,213 | 2,339 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 30 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 122 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 82,226 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,190 | 2,160 | 2,213 | 2,339 |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 122 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,004 | 1,983 | 1,743 | 878 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 30 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2021 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 3,240 | 3,281 | 3,171 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (41) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 504 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 86,499 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 3,240 | 3,281 | 3,171 |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 504 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 2,437 | 2,207 | 1,208 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (41) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2022 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,440 | 2,528 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (88) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 431 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 99,114 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 2,440 | 2,528 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 431 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,692 | 1,173 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (88) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2023 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,844 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 537 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 25,410 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,844 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 537 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 667 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions |  |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | 2024 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (36) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (97) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 27,686 | 25,875 | 23,374 | 20,338 | 17,761 | 14,366 | 12,312 | 9,708 | 5,039 |
Prior Year Development Net of External Reinsurance After ADC Cessions | (33) |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Short Duration Insurance Contracts Last Ten Accident Years | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (97) | (100) | (115) | (107) | (99) | (94) | (87) | (98) | (141) |
Prior Year Development Net of External Reinsurance After ADC Cessions | 3 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Incurred Impact Of Adverse Development Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 70 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (152) |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (8) |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 38 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Short Duration Insurance Contracts Accident Years Prior To 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 46 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Net Of Impact Of Adverse Development Reinsurance Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | (23,632) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 243 |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (1) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 4,297 |  |  |  |  |  |  |  |  |
U.S. Property and Special Risks | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 11,863 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (23) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 11,854 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 10,979 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (48) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 836 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (25) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | $ (9) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 60.30% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 22.90% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 4.70% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 0.50% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 2.50% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 1.00% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 0.70% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 0.50% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 0.10% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 0.20% |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 9 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 0 |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (2) |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,488 | 1,487 | 1,488 | 1,487 | 1,485 | 1,482 | 1,483 | 1,494 | 1,498 | 1,511
2024 Prior Year Development Excluding the Impact of ADC | 1 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 12 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 261,309 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ (9) |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,479 | 1,479 | 1,481 | 1,482 | 1,480 | 1,476 | 1,472 | 1,475 | 1,476 |
Total of IBNR Liabilities Net of Impact of ADC | 12 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,474 | 1,471 | 1,468 | 1,463 | 1,461 | 1,455 | 1,439 | 1,411 | 1,320 | 931
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | (9) |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (9) | (8) | (7) | (5) | (5) | (6) | (11) | (19) | (22) |
Prior Year Development Net of External Reinsurance After ADC Cessions | (1) |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,541 | 1,541 | 1,544 | 1,544 | 1,542 | 1,540 | 1,533 | 1,533 | 1,536 |
2024 Prior Year Development Excluding the Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 16 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 247,696 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,541 | 1,541 | 1,544 | 1,544 | 1,542 | 1,540 | 1,533 | 1,533 | 1,536 |
Total of IBNR Liabilities Net of Impact of ADC | 16 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,521 | 1,521 | 1,518 | 1,512 | 1,501 | 1,460 | 1,422 | 1,344 | 857 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2016 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,899 | 1,896 | 1,916 | 1,924 | 2,057 | 2,011 | 2,137 | 1,878 |  |
2024 Prior Year Development Excluding the Impact of ADC | 3 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 15 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 220,270 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,899 | 1,896 | 1,916 | 1,924 | 2,057 | 2,011 | 2,137 | 1,878 |  |
Total of IBNR Liabilities Net of Impact of ADC | 15 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,878 | 1,861 | 1,852 | 1,826 | 1,789 | 1,896 | 1,672 | 941 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 3 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2017 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,927 | 1,920 | 1,936 | 1,937 | 2,154 | 2,193 | 2,188 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 7 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 37 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 102,483 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,927 | 1,920 | 1,936 | 1,937 | 2,154 | 2,193 | 2,188 |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 37 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,881 | 1,849 | 1,832 | 1,789 | 1,973 | 1,939 | 1,227 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 7 |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2018 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,569 | 1,578 | 1,596 | 1,646 | 1,664 | 1,593 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (9) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 44 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 93,909 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 1,569 | 1,578 | 1,596 | 1,646 | 1,664 | 1,593 |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 44 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 1,516 | 1,491 | 1,416 | 1,379 | 1,295 | 884 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (9) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2019 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 890 | 894 | 913 | 906 | 954 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (4) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 33 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 55,713 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 890 | 894 | 913 | 906 | 954 |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 33 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 846 | 824 | 725 | 679 | 667 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (4) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2020 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 | 0 |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 752 | 762 | 765 | 748 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (10) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 73 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 57,288 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 752 | 762 | 765 | 748 |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 73 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 662 | 658 | 650 | 488 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (10) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2021 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 | 0 |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 525 | 529 | 517 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (4) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 100 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 55,394 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 525 | 529 | 517 |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 100 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 406 | 401 | 372 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (4) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2022 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 | 0 |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 668 | 677 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (9) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 122 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 47,201 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 668 | 677 |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 122 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 522 | 400 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (9) |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2023 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 | 0 |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 604 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 294 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 29,007 |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | $ 0 |  |  |  |  |  |  |  |  |
IBNR Impact of ADC | 0 |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 604 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Net of Impact of ADC | 294 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 273 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions |  |  |  |  |  |  |  |  |  |
Paid Impact of ADC | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | 2024 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (25) |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (9) |  |  |  |  |  |  |  |  |
2024 (Net of Impact of ADC) | 11,854 | 11,276 | 10,668 | 10,187 | 9,851 | 8,813 | 7,330 | 4,886 | 3,012 |
Prior Year Development Net of External Reinsurance After ADC Cessions | (26) |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Short Duration Insurance Contracts Last Ten Accident Years | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Impact of ADC | (9) | (8) | (7) | (5) | (5) | (6) | (11) | (19) | (22) |
Prior Year Development Net of External Reinsurance After ADC Cessions | (1) |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Incurred Impact Of Adverse Development Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 9 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 0 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 3 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | 2 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Short Duration Insurance Contracts Accident Years Prior To 2015 | Adverse Development Reinsurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | (1) |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Net Of Impact Of Adverse Development Reinsurance Cover |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | (10,970) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (48) |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (1) |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 836 |  |  |  |  |  |  |  |  |
U.S. Personal Insurance | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | (1) |  |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 13,266 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 170 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 6,843 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 857 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 7,280 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | $ 170 |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 5.40% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 13.60% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 11.50% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 10.80% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 8.90% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 10.70% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 5.80% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 5.30% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 3.20% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 1.60% |  |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | $ 1,215 | 1,221 | 1,210 | 1,191 | 1,184 | 1,265 | 1,187 | 1,166 | 1,177 | 1,043
2024 Prior Year Development Excluding the Impact of ADC | (6) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 63 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 113,532 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,023 | 1,004 | 955 | 914 | 828 | 656 | 546 | 416 | 230 | 69
UK/Europe Casualty and Financial lines | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,618 | 1,547 | 1,548 | 1,536 | 1,539 | 1,426 | 1,421 | 1,342 | 1,251 |
2024 Prior Year Development Excluding the Impact of ADC | 71 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 143 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 142,423 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,253 | 1,214 | 1,127 | 1,022 | 896 | 746 | 563 | 363 | 115 |
UK/Europe Casualty and Financial lines | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,398 | 1,351 | 1,311 | 1,323 | 1,263 | 1,151 | 1,221 | 1,282 |  |
2024 Prior Year Development Excluding the Impact of ADC | 47 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 171 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 149,728 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,025 | 924 | 862 | 724 | 578 | 428 | 269 | 93 |  |
UK/Europe Casualty and Financial lines | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,686 | 1,596 | 1,554 | 1,455 | 1,416 | 1,316 | 1,286 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 90 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 229 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 151,718 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,172 | 1,085 | 867 | 711 | 549 | 359 | 109 |  |  |
UK/Europe Casualty and Financial lines | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,307 | 1,282 | 1,291 | 1,276 | 1,204 | 1,189 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 25 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 210 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 142,854 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 842 | 728 | 632 | 458 | 297 | 95 |  |  |  |
UK/Europe Casualty and Financial lines | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,114 | 1,154 | 1,161 | 1,215 | 1,163 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (40) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 353 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 86,254 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 572 | 484 | 351 | 218 | 57 |  |  |  |  |
UK/Europe Casualty and Financial lines | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,261 | 1,279 | 1,275 | 1,316 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (18) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 566 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 77,499 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 434 | 331 | 224 | 49 |  |  |  |  |  |
UK/Europe Casualty and Financial lines | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,197 | 1,203 | 1,243 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (6) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 681 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 74,390 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 282 | 177 | 55 |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,230 | 1,233 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (3) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 803 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 69,733 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 183 | 35 |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,240 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 1,052 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 60,687 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 57 |  |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 160 |  |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 10 |  |  |  |  |  |  |  |  |
UK/Europe Casualty and Financial lines | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 0 |  |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 12,444 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (35) |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 10,174 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 85 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 2,355 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | $ (35) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 20.90% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 37.50% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 18.70% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 8.20% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 3.70% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 2.20% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 1.10% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | (0.004) |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 1.60% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 0.30% |  |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | $ 1,399 | 1,407 | 1,421 | 1,388 | 1,400 | 1,410 | 1,431 | 1,457 | 1,472 | 1,516
2024 Prior Year Development Excluding the Impact of ADC | (8) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 3 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 54,684 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,377 | 1,373 | 1,331 | 1,329 | 1,321 | 1,298 | 1,263 | 1,163 | 895 | 336
UK/Europe Property and Special Risks | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,553 | 1,558 | 1,563 | 1,626 | 1,632 | 1,635 | 1,661 | 1,636 | 1,494 |
2024 Prior Year Development Excluding the Impact of ADC | (5) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 17 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 57,353 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,522 | 1,520 | 1,546 | 1,528 | 1,501 | 1,457 | 1,327 | 1,080 | 441 |
UK/Europe Property and Special Risks | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,535 | 1,533 | 1,533 | 1,567 | 1,582 | 1,576 | 1,598 | 1,609 |  |
2024 Prior Year Development Excluding the Impact of ADC | 2 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 15 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 53,528 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,446 | 1,439 | 1,426 | 1,388 | 1,333 | 1,193 | 916 | 345 |  |
UK/Europe Property and Special Risks | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,422 | 1,427 | 1,429 | 1,481 | 1,493 | 1,514 | 1,547 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (5) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 25 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 44,342 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,325 | 1,301 | 1,267 | 1,254 | 1,131 | 952 | 308 |  |  |
UK/Europe Property and Special Risks | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,065 | 1,062 | 1,064 | 1,076 | 1,073 | 1,112 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 3 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 45 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 33,930 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 953 | 922 | 884 | 798 | 632 | 258 |  |  |  |
UK/Europe Property and Special Risks | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,190 | 1,200 | 1,181 | 1,223 | 1,282 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (10) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 94 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 26,280 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,004 | 896 | 805 | 657 | 245 |  |  |  |  |
UK/Europe Property and Special Risks | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 923 | 914 | 958 | 995 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 9 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 85 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 22,968 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 748 | 672 | 489 | 185 |  |  |  |  |  |
UK/Europe Property and Special Risks | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,238 | 1,253 | 1,098 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (15) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 95 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 24,972 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,100 | 650 | 190 |  |  |  |  |  |  |
UK/Europe Property and Special Risks | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,038 | 1,034 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 4 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 179 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 23,267 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 504 | 150 |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,081 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 542 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 17,451 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 195 |  |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (25) |  |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | (10) |  |  |  |  |  |  |  |  |
UK/Europe Property and Special Risks | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | 0 |  |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 18,091 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (47) |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 16,861 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 39 |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year loss development, net of reinsurance | 1,269 |  |  |  |  |  |  |  |  |
Prior Year Development Net of External Reinsurance After ADC Cessions | $ (47) |  |  |  |  |  |  |  |  |
Year 1 (as a percent) | 58.50% |  |  |  |  |  |  |  |  |
Year 2 (as a percent) | 25.80% |  |  |  |  |  |  |  |  |
Year 3 (as a percent) | 7.00% |  |  |  |  |  |  |  |  |
Year 4 (as a percent) | 3.50% |  |  |  |  |  |  |  |  |
Year 5 (as a percent) | 1.80% |  |  |  |  |  |  |  |  |
Year 6 (as a percent) | 1.30% |  |  |  |  |  |  |  |  |
Year 7 (as a percent) | 0.60% |  |  |  |  |  |  |  |  |
Year 8 (as a percent) | 0.40% |  |  |  |  |  |  |  |  |
Year 9 (as a percent) | 0.30% |  |  |  |  |  |  |  |  |
Year 10 (as a percent) | 0.20% |  |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | $ 2,128 | 2,127 | 2,123 | 2,126 | 2,126 | 2,126 | 2,127 | 2,135 | 2,134 | 2,153
2024 Prior Year Development Excluding the Impact of ADC | 1 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 2 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,777,959 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 2,117 | 2,112 | 2,104 | 2,096 | 2,079 | 2,055 | 2,020 | 1,927 | 1,751 | $ 1,155
UK/Europe and Japan Personal Insurance | 2016 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,084 | 2,086 | 2,082 | 2,090 | 2,092 | 2,094 | 2,099 | 2,112 | 2,113 |
2024 Prior Year Development Excluding the Impact of ADC | (2) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 3 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,795,415 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 2,070 | 2,065 | 2,057 | 2,043 | 2,019 | 1,976 | 1,894 | 1,723 | $ 1,154 |
UK/Europe and Japan Personal Insurance | 2017 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,989 | 1,990 | 1,960 | 1,995 | 1,978 | 1,982 | 1,995 | 2,070 |  |
2024 Prior Year Development Excluding the Impact of ADC | (1) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 4 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,719,018 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,960 | 1,949 | 1,949 | 1,930 | 1,896 | 1,830 | 1,682 | $ 1,130 |  |
UK/Europe and Japan Personal Insurance | 2018 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 2,272 | 2,274 | 2,296 | 2,251 | 2,279 | 2,283 | 2,372 |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (2) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 1 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,917,173 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 2,250 | 2,226 | 2,180 | 2,139 | 2,062 | 1,913 | $ 1,426 |  |  |
UK/Europe and Japan Personal Insurance | 2019 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,827 | 1,825 | 1,853 | 1,834 | 1,871 | 1,915 |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 2 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ (1) |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,676,687 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,798 | 1,777 | 1,746 | 1,690 | 1,576 | $ 1,120 |  |  |  |
UK/Europe and Japan Personal Insurance | 2020 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,552 | 1,563 | 1,580 | 1,627 | 1,757 |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (11) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 5 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,392,905 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,513 | 1,485 | 1,446 | 1,350 | $ 937 |  |  |  |  |
UK/Europe and Japan Personal Insurance | 2021 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,555 | 1,555 | 1,554 | 1,626 |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | 0 |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 13 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,394,112 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,465 | 1,408 | 1,306 | $ 920 |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | 2022 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,716 | 1,752 | 1,710 |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (36) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 67 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 2,072,754 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,550 | 1,440 | $ 1,006 |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | 2023 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,552 | 1,557 |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (5) |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 101 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,435,789 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 1,290 | $ 881 |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | 2024 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred losses and allocated loss adjustment expenses, undiscounted and net of reinsurance | 1,416 |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC |  |  |  |  |  |  |  |  |  |
Total of IBNR Liabilities Plus Expected Development on Reported Losses | $ 177 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 1,260,923 |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | $ 848 |  |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | Short Duration Insurance Contracts Last Ten Accident Years |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
2024 Prior Year Development Excluding the Impact of ADC | (54) |  |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | Short Duration Insurance Contracts Accident Years Prior To Current Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance from the table below | 0 |  |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | Short Duration Insurance Contracts Accident Years Prior To 2015 |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities for losses and loss adjustment expenses and prior year development before accident year 2015, net of reinsurance | 7 |  |  |  |  |  |  |  |  |
UK/Europe and Japan Personal Insurance | Unallocated To Accident Year |  |  |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |  |  |
Unallocated loss adjustment expense prior year development | $ 0 |  |  |  |  |  |  |  |  |

X
- Definition Actual Loss Emergence Reserve Adjustment Paid + References No definition available. + Details
Name: | aig_ActualLossEmergenceReserveAdjustmentPaid
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Changes In Unpaid Net Loss Reserves Related To Losses And Loss Adjustment Incurred In Prior Years Excluding Discount And Deferred Gain Amortization + References No definition available. + Details
Name: | aig_ChangesInUnpaidNetLossReservesRelatedToLossesAndLossAdjustmentIncurredInPriorYearsExcludingDiscountAndDeferredGainAmortization
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expected Emergency Loss IBNR Liabilities, Impact of Adverse Development Adjustment + References No definition available. + Details
Name: | aig_ExpectedEmergencyLossIBNRLiabilitiesImpactOfAdverseDevelopmentAdjustment
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Expected Emergency Loss IBNR Liabilities Impact Of Adverse Development Adjustment Reinsurance Net + References No definition available. + Details
Name: | aig_ExpectedEmergencyLossIBNRLiabilitiesImpactOfAdverseDevelopmentAdjustmentReinsuranceNet
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Expected Emergency Loss Incurred Impact Of Adverse Development Adjustment + References No definition available. + Details
Name: | aig_ExpectedEmergencyLossIncurredImpactOfAdverseDevelopmentAdjustment
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Expected Emergency Loss Incurred Impact Of Adverse Development Adjustment Reinsurance Net + References No definition available. + Details
Name: | aig_ExpectedEmergencyLossIncurredImpactOfAdverseDevelopmentAdjustmentReinsuranceNet
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Liability for Unpaid Claims and Claims Adjustment Expense Incurred Claims Prior Years Excluding Accretion of Discount + References No definition available. + Details
Name: | aig_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsExcludingAccretionOfDiscount
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Short-Duration Insurance Contracts, Historical Claims (Reinsurance) Duration, Year Eight + References No definition available. + Details
Name: | aig_ShortDurationInsuranceContractsHistoricalClaimsReinsuranceDurationYearEight
Namespace Prefix: | aig_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Short-Duration Insurance Contracts, Historical Claims (Reinsurance) Duration, Year Four + References No definition available. + Details
Name: | aig_ShortDurationInsuranceContractsHistoricalClaimsReinsuranceDurationYearFour
Namespace Prefix: | aig_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Short duration Insurance Contracts Liability For Unpaid Claims And Allocated Claim Adjustment Expense Net Prior + References No definition available. + Details
Name: | aig_ShortDurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetPrior
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unallocated loss adjustment expense prior year development + References No definition available. + Details
Name: | aig_UnallocatedLossAdjustmentExpensePriorYearDevelopment
Namespace Prefix: | aig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems
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/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
Name: | us-gaap_ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the eighth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearEight
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the ninth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearNine
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the seventh year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearSeven
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the sixth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearSix
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the tenth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearTen
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the third year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the second year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4E Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4D + 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/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + 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/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cumulative number of reported claims for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4D + Details
Name: | us-gaap_ShortdurationInsuranceContractsNumberOfReportedClaims
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 + Details
Name: | us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=aig_UsWorkersCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | aig_ReinsurancePolicyAxis=aig_AdverseDevelopmentReinsuranceMember
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_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractsAccidentYear2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=us-gaap_ShortDurationInsuranceContractAccidentYear2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=aig_ShortDurationInsuranceContractsAccidentYearsPriorTo2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | srt_ProductOrServiceAxis=aig_USExcessCasualtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_USOtherCasualtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_USFinancialLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_USPropertyAndSpecialRisksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_USPersonalInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_UKEuropeCasualtyAndFinancialLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_UKEuropePropertyAndSpecialRisksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aig_UKEuropeAndJapanPersonalInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |