Fair Value Measurements - Gross components of purchases, sales, issuances and settlements (Details) - USD ($)
|
12 Months Ended |
Dec. 31, 2023 |
Dec. 31, 2022 |
| Assets: |
|
|
| Purchases |
$ 5,122,000,000
|
$ 5,937,000,000
|
| Sales |
(659,000,000)
|
(1,806,000,000)
|
| Issuances and Settlements |
(2,955,000,000)
|
(3,442,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
1,508,000,000
|
689,000,000
|
| Liabilities: |
|
|
| Purchases |
(1,156,000,000)
|
(687,000,000)
|
| Sales |
1,456,000,000
|
935,000,000
|
| Issuances and Settlements |
(870,000,000)
|
(404,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(570,000,000)
|
(156,000,000)
|
| Issuances, assets |
0
|
0
|
| Issuances, liabilities |
0
|
0
|
| Transfers into Level 3 at end of reporting period, net gains (losses) not included in realized and unrealized gains and losses related to Level 3 for the period |
25,000,000
|
(128,000,000)
|
| Transfers out Level 3 at end of reporting period, net gains (losses) included in realized and unrealized gains and losses related to Level 3 for the period. |
(34,000,000)
|
(129,000,000)
|
| Policyholder contract deposits |
|
|
| Liabilities: |
|
|
| Purchases |
0
|
0
|
| Sales |
1,428,000,000
|
923,000,000
|
| Issuances and Settlements |
(317,000,000)
|
(21,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
1,111,000,000
|
902,000,000
|
| Derivative liabilities, net |
|
|
| Liabilities: |
|
|
| Purchases |
(1,156,000,000)
|
(687,000,000)
|
| Sales |
28,000,000
|
12,000,000
|
| Issuances and Settlements |
445,000,000
|
181,000,000
|
| Purchases, Sales, Issuances and Settlements, Net |
(683,000,000)
|
(494,000,000)
|
| Fortitude Re funds withheld payable |
|
|
| Liabilities: |
|
|
| Purchases |
0
|
0
|
| Sales |
0
|
0
|
| Issuances and Settlements |
(998,000,000)
|
(676,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(998,000,000)
|
(676,000,000)
|
| Other Liabilities |
|
|
| Liabilities: |
|
|
| Issuances and Settlements |
|
112,000,000
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
112,000,000
|
| Bonds available for sale |
|
|
| Assets: |
|
|
| Purchases |
4,215,000,000
|
4,390,000,000
|
| Sales |
(628,000,000)
|
(269,000,000)
|
| Issuances and Settlements |
(2,455,000,000)
|
(2,417,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
1,132,000,000
|
1,704,000,000
|
| Bonds available for sale | Obligations of states, municipalities and political subdivisions |
|
|
| Assets: |
|
|
| Purchases |
1,000,000
|
6,000,000
|
| Sales |
(27,000,000)
|
(72,000,000)
|
| Issuances and Settlements |
(5,000,000)
|
(38,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(31,000,000)
|
(104,000,000)
|
| Bonds available for sale | Corporate debt |
|
|
| Assets: |
|
|
| Purchases |
229,000,000
|
143,000,000
|
| Sales |
(34,000,000)
|
(79,000,000)
|
| Issuances and Settlements |
(790,000,000)
|
(151,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(595,000,000)
|
(87,000,000)
|
| Bonds available for sale | RMBS |
|
|
| Assets: |
|
|
| Purchases |
935,000,000
|
391,000,000
|
| Sales |
(67,000,000)
|
(76,000,000)
|
| Issuances and Settlements |
(1,117,000,000)
|
(1,826,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(249,000,000)
|
(1,511,000,000)
|
| Bonds available for sale | CMBS |
|
|
| Assets: |
|
|
| Purchases |
10,000,000
|
195,000,000
|
| Sales |
(50,000,000)
|
(17,000,000)
|
| Issuances and Settlements |
(18,000,000)
|
(41,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(58,000,000)
|
137,000,000
|
| Bonds available for sale | CLO/ABS |
|
|
| Assets: |
|
|
| Purchases |
3,040,000,000
|
3,655,000,000
|
| Sales |
(450,000,000)
|
(25,000,000)
|
| Issuances and Settlements |
(520,000,000)
|
(351,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
2,070,000,000
|
3,279,000,000
|
| Bonds available for sale | Non-U.S. governments |
|
|
| Assets: |
|
|
| Purchases |
0
|
0
|
| Sales |
0
|
0
|
| Issuances and Settlements |
(5,000,000)
|
(10,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(5,000,000)
|
(10,000,000)
|
| Other bond securities |
|
|
| Assets: |
|
|
| Purchases |
482,000,000
|
838,000,000
|
| Sales |
(29,000,000)
|
(1,536,000,000)
|
| Issuances and Settlements |
(330,000,000)
|
(311,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
123,000,000
|
(1,009,000,000)
|
| Other bond securities | Obligations of states, municipalities and political subdivisions |
|
|
| Assets: |
|
|
| Purchases |
3,000,000
|
|
| Sales |
(2,000,000)
|
|
| Issuances and Settlements |
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
1,000,000
|
|
| Other bond securities | Corporate debt |
|
|
| Assets: |
|
|
| Purchases |
204,000,000
|
26,000,000
|
| Sales |
0
|
0
|
| Issuances and Settlements |
(204,000,000)
|
132,000,000
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
158,000,000
|
| Other bond securities | RMBS |
|
|
| Assets: |
|
|
| Purchases |
6,000,000
|
62,000,000
|
| Sales |
0
|
(5,000,000)
|
| Issuances and Settlements |
(30,000,000)
|
(41,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(24,000,000)
|
16,000,000
|
| Other bond securities | CMBS |
|
|
| Assets: |
|
|
| Sales |
(7,000,000)
|
(1,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
(7,000,000)
|
(1,000,000)
|
| Other bond securities | CLO/ABS |
|
|
| Assets: |
|
|
| Purchases |
269,000,000
|
750,000,000
|
| Sales |
(20,000,000)
|
(1,530,000,000)
|
| Issuances and Settlements |
(96,000,000)
|
(402,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
153,000,000
|
(1,182,000,000)
|
| Equity securities |
|
|
| Assets: |
|
|
| Purchases |
32,000,000
|
27,000,000
|
| Sales |
(2,000,000)
|
(1,000,000)
|
| Issuances and Settlements |
(3,000,000)
|
1,000,000
|
| Purchases, Sales, Issuances and Settlements, Net |
27,000,000
|
27,000,000
|
| Other invested assets |
|
|
| Assets: |
|
|
| Purchases |
263,000,000
|
682,000,000
|
| Sales |
0
|
0
|
| Issuances and Settlements |
(173,000,000)
|
(708,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
90,000,000
|
(26,000,000)
|
| Other assets |
|
|
| Assets: |
|
|
| Purchases |
130,000,000
|
0
|
| Sales |
0
|
0
|
| Issuances and Settlements |
6,000,000
|
(7,000,000)
|
| Purchases, Sales, Issuances and Settlements, Net |
$ 136,000,000
|
$ (7,000,000)
|