Fair Value Measurements - Changes in level 3 recurring fair value measurements, assets (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
$ 24,928
|
$ 23,791
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
612
|
1,110
|
|
| Other Comprehensive Income (Loss) |
(3,445)
|
(464)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
2,660
|
830
|
|
| Gross Transfers In |
2,957
|
1,228
|
|
| Gross Transfers Out |
(3,423)
|
(1,505)
|
|
| Other |
701
|
62
|
|
| Fair Value End of Year |
$ 23,588
|
$ 24,928
|
$ 23,791
|
| Derivative Liability, Statement of Financial Position [Extensible Enumeration] |
Total net realized gains (losses)
|
Total net realized gains (losses)
|
Total net realized gains (losses)
|
| Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |
Total net realized gains (losses)
|
Total net realized gains (losses)
|
Total net realized gains (losses)
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
$ 163
|
$ 623
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
$ (2,565)
|
791
|
|
| Gross Transfers Out |
|
(1)
|
|
| Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] |
Other comprehensive income (loss)
|
|
|
| Interest rate contracts |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
$ 0
|
0
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs |
(303)
|
0
|
$ 0
|
| Net Realized and Unrealized (Gains) Losses Included in Income |
1
|
0
|
|
| Other Comprehensive (Income) Loss |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(304)
|
0
|
|
| Gross Transfers In |
0
|
0
|
|
| Other |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
(1)
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Foreign exchange contracts |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
0
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs |
0
|
0
|
0
|
| Net Realized and Unrealized (Gains) Losses Included in Income |
(1)
|
0
|
|
| Other Comprehensive (Income) Loss |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
1
|
0
|
|
| Gross Transfers In |
0
|
0
|
|
| Other |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Equity contracts |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
53
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs |
(267)
|
(457)
|
(146)
|
| Net Realized and Unrealized (Gains) Losses Included in Income |
494
|
(22)
|
|
| Other Comprehensive (Income) Loss |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(304)
|
(271)
|
|
| Gross Transfers In |
0
|
(71)
|
|
| Other |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
(249)
|
19
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Credit contracts |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
0
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs |
0
|
(1)
|
(2)
|
| Net Realized and Unrealized (Gains) Losses Included in Income |
1
|
11
|
|
| Other Comprehensive (Income) Loss |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
(10)
|
|
| Gross Transfers In |
0
|
0
|
|
| Other |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
(2)
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other contracts |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
0
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs |
(14)
|
(12)
|
(7)
|
| Net Realized and Unrealized (Gains) Losses Included in Income |
(63)
|
(62)
|
|
| Other Comprehensive (Income) Loss |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
61
|
57
|
|
| Gross Transfers In |
0
|
0
|
|
| Other |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
63
|
63
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Derivative liabilities, net |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
53
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs |
(584)
|
(470)
|
(155)
|
| Net Realized and Unrealized (Gains) Losses Included in Income |
432
|
(73)
|
|
| Other Comprehensive (Income) Loss |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(546)
|
(224)
|
|
| Gross Transfers In |
0
|
(71)
|
|
| Other |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
(187)
|
80
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Policyholder contract deposits(b) |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
(54)
|
|
| Fortitude Re funds withheld payable |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
0
|
|
| Debt of consolidated investment entities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Gross Transfers Out |
0
|
0
|
|
| Bonds available for sale |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
22,407
|
21,644
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
449
|
461
|
|
| Other Comprehensive Income (Loss) |
(3,423)
|
(449)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
2,128
|
1,228
|
|
| Gross Transfers In |
2,526
|
1,089
|
|
| Gross Transfers Out |
(2,960)
|
(1,504)
|
|
| Other |
701
|
62
|
|
| Fair Value End of Year |
20,426
|
22,407
|
21,644
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(2,565)
|
791
|
|
| Bonds available for sale | Obligations of states, municipalities and political subdivisions |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,395
|
2,057
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
1
|
7
|
|
| Other Comprehensive Income (Loss) |
(525)
|
(5)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(95)
|
(342)
|
|
| Gross Transfers In |
40
|
0
|
|
| Gross Transfers Out |
(11)
|
(260)
|
|
| Other |
0
|
62
|
|
| Fair Value End of Year |
805
|
1,395
|
2,057
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(221)
|
36
|
|
| Bonds available for sale | Corporate debt |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,907
|
1,709
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
17
|
(10)
|
|
| Other Comprehensive Income (Loss) |
(192)
|
(25)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(159)
|
109
|
|
| Gross Transfers In |
911
|
373
|
|
| Gross Transfers Out |
(516)
|
(249)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
1,968
|
1,907
|
1,709
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(174)
|
31
|
|
| Bonds available for sale | RMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
7,595
|
8,104
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
322
|
415
|
|
| Other Comprehensive Income (Loss) |
(986)
|
(104)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(834)
|
(782)
|
|
| Gross Transfers In |
7
|
8
|
|
| Gross Transfers Out |
(434)
|
(46)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
5,670
|
7,595
|
8,104
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(610)
|
787
|
|
| Bonds available for sale | CMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,072
|
886
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
9
|
25
|
|
| Other Comprehensive Income (Loss) |
(140)
|
(45)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
38
|
253
|
|
| Gross Transfers In |
45
|
53
|
|
| Gross Transfers Out |
(306)
|
(100)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
718
|
1,072
|
886
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(115)
|
21
|
|
| Bonds available for sale | CLO |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
3,038
|
3,362
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(31)
|
(5)
|
|
| Other Comprehensive Income (Loss) |
(163)
|
(173)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(105)
|
48
|
|
| Gross Transfers In |
1,305
|
655
|
|
| Gross Transfers Out |
(1,673)
|
(849)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
1,670
|
3,038
|
3,362
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(76)
|
(164)
|
|
| Bonds available for sale | ABS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
7,400
|
5,526
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
131
|
29
|
|
| Other Comprehensive Income (Loss) |
(1,417)
|
(97)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
3,283
|
1,942
|
|
| Gross Transfers In |
218
|
0
|
|
| Gross Transfers Out |
(20)
|
0
|
|
| Other |
701
|
0
|
|
| Fair Value End of Year |
9,595
|
7,400
|
5,526
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
0
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
(1,369)
|
80
|
|
| Other bond securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
627
|
334
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(149)
|
(3)
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
704
|
291
|
|
| Gross Transfers In |
405
|
5
|
|
| Gross Transfers Out |
(283)
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
1,304
|
627
|
334
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(165)
|
11
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other bond securities | Corporate debt |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
134
|
0
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(5)
|
(1)
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
158
|
135
|
|
| Gross Transfers In |
335
|
0
|
|
| Gross Transfers Out |
(205)
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
417
|
134
|
0
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(2)
|
(1)
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other bond securities | RMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
106
|
96
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(23)
|
2
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
24
|
8
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
107
|
106
|
96
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(22)
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other bond securities | CMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
33
|
45
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(5)
|
0
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
(17)
|
|
| Gross Transfers In |
0
|
5
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
28
|
33
|
45
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(4)
|
(2)
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other bond securities | CLO |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
149
|
193
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
1
|
(4)
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(131)
|
(40)
|
|
| Gross Transfers In |
70
|
0
|
|
| Gross Transfers Out |
(78)
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
11
|
149
|
193
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(5)
|
15
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other bond securities | ABS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
205
|
0
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(117)
|
0
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
653
|
205
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
741
|
205
|
0
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(132)
|
(1)
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Equity securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
2
|
42
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(1)
|
11
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
23
|
(120)
|
|
| Gross Transfers In |
2
|
70
|
|
| Gross Transfers Out |
0
|
(1)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
26
|
2
|
42
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
(1)
|
0
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
0
|
0
|
|
| Other Invested Assets |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,892
|
1,771
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
313
|
641
|
|
| Other Comprehensive Income (Loss) |
(22)
|
(15)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(195)
|
(569)
|
|
| Gross Transfers In |
24
|
64
|
|
| Gross Transfers Out |
(180)
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Year |
1,832
|
1,892
|
$ 1,771
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Year |
329
|
612
|
|
| Changes in Unrealized Gain (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Year |
$ 0
|
$ 0
|
|