Fair Value Measurements (excluding Consolidated Investment Entities) - Level 3 Financial Instruments (Details) - Level 3 - Measured at fair value on a recurring basis - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
| Managed custody guarantees |
|
|
|
|
| Derivatives Rollforward: |
|
|
|
|
| Fair Value, Derivatives, beginning balance |
$ (7)
|
$ (16)
|
|
|
| Gains (losses) from standalone derivatives recognized in Net gains (losses) |
0
|
4
|
|
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
0
|
0
|
|
|
| Purchases |
0
|
0
|
|
|
| Issuances |
(1)
|
(1)
|
|
|
| Sales |
0
|
0
|
|
|
| Settlements |
0
|
0
|
|
|
| Transfers in to Level 3 |
0
|
0
|
|
|
| Transfers out of Level 3 |
0
|
0
|
|
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
0
|
0
|
|
|
| Embedded derivatives within reinsurance |
|
|
|
|
| Derivatives Rollforward: |
|
|
|
|
| Fair Value, Derivatives, beginning balance |
|
(52)
|
|
$ (53)
|
| Gains (losses) from standalone derivatives recognized in Net gains (losses) |
0
|
10
|
$ 0
|
11
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
|
0
|
|
0
|
| Purchases |
|
0
|
|
0
|
| Issuances |
|
0
|
|
0
|
| Sales |
|
0
|
|
0
|
| Settlements |
|
0
|
|
0
|
| Transfers in to Level 3 |
|
0
|
|
0
|
| Transfers out of Level 3 |
|
0
|
|
0
|
| Fair Value, Derivatives, ending balance |
|
(42)
|
|
(42)
|
| Change In Unrealized Gains (Losses) Included in Earnings |
|
0
|
|
0
|
| Change In Unrealized Gains (Losses) Included in OCI |
|
0
|
|
0
|
| Short-term investments and cash equivalents |
|
|
|
|
| Derivatives Rollforward: |
|
|
|
|
| Fair Value, Derivatives, beginning balance |
|
24
|
|
23
|
| Gains (losses) from standalone derivatives recognized in Net gains (losses) |
|
0
|
|
0
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
|
1
|
|
2
|
| Purchases |
|
0
|
|
0
|
| Issuances |
|
0
|
|
0
|
| Sales |
|
0
|
|
0
|
| Settlements |
|
0
|
|
0
|
| Transfers in to Level 3 |
|
0
|
|
0
|
| Transfers out of Level 3 |
|
0
|
|
0
|
| Fair Value, Derivatives, ending balance |
|
25
|
|
25
|
| Change In Unrealized Gains (Losses) Included in Earnings |
|
0
|
|
0
|
| Change In Unrealized Gains (Losses) Included in OCI |
|
1
|
|
2
|
| Fixed maturities |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
3,575
|
2,463
|
3,239
|
2,127
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
(3)
|
(30)
|
(8)
|
(53)
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
4
|
36
|
(38)
|
85
|
| Purchases |
594
|
264
|
1,058
|
627
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
(39)
|
(13)
|
(76)
|
(22)
|
| Settlements |
(168)
|
(109)
|
(284)
|
(138)
|
| Transfers in to Level 3 |
388
|
2
|
513
|
0
|
| Transfers out of Level 3 |
(56)
|
0
|
(109)
|
(13)
|
| Fair Value, Assets, ending balance |
4,295
|
2,613
|
4,295
|
2,613
|
| Change In Unrealized Gains (Losses) Included in Earnings |
(3)
|
1
|
(6)
|
(20)
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
6
|
33
|
(36)
|
81
|
| U.S. corporate public securities |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
77
|
48
|
78
|
59
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
0
|
0
|
0
|
(1)
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
0
|
0
|
(1)
|
2
|
| Purchases |
0
|
0
|
0
|
1
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
(11)
|
| Settlements |
0
|
0
|
0
|
0
|
| Transfers in to Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
(2)
|
| Fair Value, Assets, ending balance |
77
|
48
|
77
|
48
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
0
|
0
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
0
|
0
|
(1)
|
1
|
| U.S. corporate private securities |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
2,306
|
1,677
|
2,100
|
1,497
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
0
|
2
|
(3)
|
1
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
(1)
|
16
|
(31)
|
35
|
| Purchases |
396
|
87
|
667
|
271
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
(39)
|
(13)
|
(74)
|
(11)
|
| Settlements |
(101)
|
(94)
|
(202)
|
(118)
|
| Transfers in to Level 3 |
251
|
0
|
373
|
0
|
| Transfers out of Level 3 |
(32)
|
0
|
(50)
|
0
|
| Fair Value, Assets, ending balance |
2,780
|
1,675
|
2,780
|
1,675
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
(1)
|
1
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
1
|
13
|
(30)
|
32
|
| Foreign corporate public securities and foreign governments |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
59
|
59
|
60
|
60
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
0
|
0
|
0
|
0
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
1
|
0
|
(1)
|
(1)
|
| Purchases |
0
|
3
|
0
|
3
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
0
|
| Settlements |
(1)
|
0
|
0
|
0
|
| Transfers in to Level 3 |
15
|
0
|
15
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair Value, Assets, ending balance |
74
|
62
|
74
|
62
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
0
|
0
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
1
|
0
|
(1)
|
(1)
|
| Foreign corporate private securities |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
740
|
590
|
631
|
421
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
1
|
(32)
|
1
|
(50)
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
(6)
|
20
|
(16)
|
49
|
| Purchases |
156
|
72
|
274
|
232
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
0
|
| Settlements |
(56)
|
(14)
|
(58)
|
(16)
|
| Transfers in to Level 3 |
122
|
0
|
125
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair Value, Assets, ending balance |
957
|
636
|
957
|
636
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
1
|
0
|
(18)
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
(6)
|
20
|
(15)
|
49
|
| Residential mortgage-backed securities |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
75
|
70
|
71
|
67
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
(3)
|
0
|
(5)
|
(3)
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Purchases |
5
|
28
|
4
|
43
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
0
|
| Settlements |
0
|
0
|
0
|
0
|
| Transfers in to Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
(12)
|
0
|
(5)
|
(9)
|
| Fair Value, Assets, ending balance |
65
|
98
|
65
|
98
|
| Change In Unrealized Gains (Losses) Included in Earnings |
(3)
|
0
|
(5)
|
(3)
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Other asset-backed securities |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
318
|
19
|
299
|
23
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
(1)
|
0
|
(1)
|
0
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
10
|
0
|
11
|
0
|
| Purchases |
37
|
74
|
113
|
77
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
(2)
|
0
|
| Settlements |
(10)
|
(1)
|
(24)
|
(4)
|
| Transfers in to Level 3 |
0
|
2
|
0
|
0
|
| Transfers out of Level 3 |
(12)
|
0
|
(54)
|
(2)
|
| Fair Value, Assets, ending balance |
342
|
94
|
342
|
94
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
0
|
0
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
10
|
0
|
11
|
0
|
| Equity securities, at fair value |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
83
|
110
|
94
|
98
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
2
|
(1)
|
1
|
2
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Purchases |
8
|
0
|
8
|
9
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
0
|
(14)
|
(10)
|
(14)
|
| Settlements |
0
|
0
|
0
|
0
|
| Transfers in to Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair Value, Assets, ending balance |
93
|
95
|
93
|
95
|
| Change In Unrealized Gains (Losses) Included in Earnings |
1
|
0
|
1
|
2
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Contingent Consideration |
|
|
|
|
| Liabilities Rollforward: |
|
|
|
|
| Fair Value, Liabilities, Ending Balance |
(22)
|
(152)
|
(147)
|
(2)
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
0
|
(2)
|
(4)
|
(4)
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
0
|
| Issuances |
0
|
0
|
0
|
(149)
|
| Sales |
0
|
0
|
0
|
0
|
|
Settlements |
1
|
0
|
130
|
1
|
| Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair Value, Liabilities, Ending Balance |
(21)
|
(154)
|
(21)
|
(154)
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
0
|
0
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Managed custody guarantees |
|
|
|
|
| Liabilities Rollforward: |
|
|
|
|
| Fair Value, Liabilities, Ending Balance |
|
|
(5)
|
(19)
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
|
|
(2)
|
7
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
|
|
0
|
0
|
| Purchases |
|
|
0
|
0
|
| Issuances |
|
|
(1)
|
(1)
|
| Sales |
|
|
0
|
0
|
|
Settlements |
|
|
0
|
0
|
| Transfers into Level 3 |
|
|
0
|
0
|
| Transfers out of Level 3 |
|
|
0
|
0
|
| Fair Value, Liabilities, Ending Balance |
(8)
|
(13)
|
(8)
|
(13)
|
| Change In Unrealized Gains (Losses) Included in Earnings |
|
|
0
|
0
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
|
|
0
|
0
|
| Assets held in separate accounts |
|
|
|
|
| Assets Rollforward: |
|
|
|
|
| Fair Value, Assets, beginning balance |
426
|
338
|
388
|
340
|
| Total Realized/Unrealized Gains (Losses) Included in Net income |
(1)
|
2
|
(5)
|
6
|
| Total Realized/Unrealized Gains (Losses) Included in OCI |
0
|
0
|
0
|
0
|
| Purchases |
34
|
13
|
72
|
21
|
| Issuances |
0
|
0
|
0
|
0
|
| Sales |
(18)
|
(3)
|
(25)
|
(17)
|
| Settlements |
0
|
0
|
0
|
0
|
| Transfers in to Level 3 |
12
|
0
|
24
|
0
|
| Transfers out of Level 3 |
(7)
|
(3)
|
(8)
|
(3)
|
| Fair Value, Assets, ending balance |
446
|
347
|
446
|
347
|
| Change In Unrealized Gains (Losses) Included in Earnings |
0
|
0
|
0
|
0
|
| Derivatives Rollforward: |
|
|
|
|
| Change In Unrealized Gains (Losses) Included in OCI |
$ 0
|
$ 0
|
$ 0
|
$ 0
|