Fair Value Measurements - Changes in level 3 recurring fair value measurements, assets (Details) - USD ($)
$ in Millions |
3 Months Ended |
|
Mar. 31, 2024 |
Mar. 31, 2023 |
Dec. 31, 2023 |
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
$ 26,627
|
$ 23,588
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
83
|
31
|
|
| Other Comprehensive Income (Loss) |
229
|
311
|
|
| Purchases, Sales, Issuances and Settlements, Net |
1,541
|
835
|
|
| Gross Transfers In |
1,049
|
246
|
|
| Gross Transfers Out |
(411)
|
(705)
|
|
| Other |
(16)
|
228
|
|
| Fair Value End of Period |
29,102
|
24,534
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
190
|
241
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
$ (61)
|
$ (15)
|
|
| Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |
Total net realized losses
|
|
|
| Market risk benefit assets, at fair value |
$ 1,172
|
|
$ 912
|
| Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] |
Other comprehensive loss, net of tax
|
|
|
| Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |
Total net realized losses
|
Total net realized losses
|
|
| Recurring Basis |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Market risk benefit assets, at fair value |
$ 1,172
|
|
912
|
| Level 3 | Recurring Basis |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Market risk benefit assets, at fair value |
1,172
|
$ 830
|
$ 912
|
| Bonds available-for-sale |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
23,412
|
20,426
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
134
|
37
|
|
| Other Comprehensive Income (Loss) |
238
|
306
|
|
| Purchases, Sales, Issuances and Settlements, Net |
1,601
|
829
|
|
| Gross Transfers In |
1,048
|
245
|
|
| Gross Transfers Out |
(366)
|
(509)
|
|
| Other |
0
|
174
|
|
| Fair Value End of Period |
26,067
|
21,508
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
190
|
241
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| 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 |
844
|
805
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
0
|
0
|
|
| Other Comprehensive Income (Loss) |
(14)
|
55
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(1)
|
(2)
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
829
|
858
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
(16)
|
43
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Bonds available-for-sale | Corporate debt |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,357
|
1,968
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
1
|
(102)
|
|
| Other Comprehensive Income (Loss) |
1
|
44
|
|
| Purchases, Sales, Issuances and Settlements, Net |
9
|
14
|
|
| Gross Transfers In |
244
|
167
|
|
| Gross Transfers Out |
(37)
|
(371)
|
|
| Other |
0
|
(16)
|
|
| Fair Value End of Period |
1,575
|
1,704
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
(4)
|
51
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Bonds available-for-sale | RMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
5,854
|
5,670
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
68
|
81
|
|
| Other Comprehensive Income (Loss) |
66
|
(40)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
404
|
(8)
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
(38)
|
(16)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
6,354
|
5,687
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
61
|
(66)
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Bonds available-for-sale | CMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
608
|
718
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(5)
|
7
|
|
| Other Comprehensive Income (Loss) |
46
|
(4)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(103)
|
0
|
|
| Gross Transfers In |
127
|
24
|
|
| Gross Transfers Out |
(126)
|
(27)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
547
|
718
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
11
|
(25)
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Bonds available-for-sale | CLO |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,843
|
1,670
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(21)
|
9
|
|
| Other Comprehensive Income (Loss) |
51
|
(18)
|
|
| Purchases, Sales, Issuances and Settlements, Net |
21
|
21
|
|
| Gross Transfers In |
0
|
54
|
|
| Gross Transfers Out |
(165)
|
(92)
|
|
| Other |
0
|
190
|
|
| Fair Value End of Period |
1,729
|
1,834
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
52
|
(16)
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Bonds available-for-sale | ABS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
12,906
|
9,595
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
91
|
42
|
|
| Other Comprehensive Income (Loss) |
88
|
269
|
|
| Purchases, Sales, Issuances and Settlements, Net |
1,271
|
804
|
|
| Gross Transfers In |
677
|
0
|
|
| Gross Transfers Out |
0
|
(3)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
15,033
|
10,707
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
86
|
254
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
0
|
|
| Other bond securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,323
|
1,304
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
26
|
38
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(30)
|
(77)
|
|
| Gross Transfers In |
1
|
1
|
|
| Gross Transfers Out |
(1)
|
(196)
|
|
| Other |
0
|
54
|
|
| Fair Value End of Period |
1,319
|
1,124
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
15
|
27
|
|
| Other bond securities | 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
|
0
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
0
|
0
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
1
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
1
|
1
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
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 |
167
|
417
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
9
|
0
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
(96)
|
|
| Gross Transfers In |
1
|
0
|
|
| Gross Transfers Out |
0
|
(191)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
177
|
130
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
8
|
3
|
|
| Other bond securities | RMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
107
|
107
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
2
|
4
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(3)
|
3
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
106
|
114
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
2
|
2
|
|
| Other bond securities | CMBS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
17
|
28
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
0
|
(1)
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
0
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
17
|
27
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
0
|
(1)
|
|
| Other bond securities | CLO |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
69
|
11
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
2
|
9
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
1
|
1
|
|
| Gross Transfers In |
0
|
1
|
|
| Gross Transfers Out |
(1)
|
(5)
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
71
|
71
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
2
|
4
|
|
| Other bond securities | ABS |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
962
|
741
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
13
|
26
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(28)
|
14
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
54
|
|
| Fair Value End of Period |
947
|
781
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
3
|
19
|
|
| Equity securities |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
42
|
26
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
3
|
0
|
|
| Other Comprehensive Income (Loss) |
0
|
0
|
|
| Purchases, Sales, Issuances and Settlements, Net |
0
|
24
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
0
|
0
|
|
| Other |
0
|
0
|
|
| Fair Value End of Period |
45
|
50
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
3
|
0
|
|
| Other invested assets |
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
| Fair Value Beginning of Year |
1,850
|
1,832
|
|
| Net Realized and Unrealized Gains (Losses) Included in Income |
(80)
|
(44)
|
|
| Other Comprehensive Income (Loss) |
(9)
|
5
|
|
| Purchases, Sales, Issuances and Settlements, Net |
(30)
|
59
|
|
| Gross Transfers In |
0
|
0
|
|
| Gross Transfers Out |
(44)
|
0
|
|
| Other |
(16)
|
0
|
|
| Fair Value End of Period |
1,671
|
1,852
|
|
| Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period |
0
|
0
|
|
| Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period |
$ (79)
|
$ (42)
|
|