Investments - Schedule of Unrealized Losses on AFS Securities (Details) - USD ($)
$ in Millions |
Sep. 30, 2025 |
Dec. 31, 2024 |
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
$ 30,307
|
$ 41,756
|
| Less than 12 months, Gross Unrealized Losses |
(549)
|
(1,324)
|
| 12 months or longer, Fair Value |
55,879
|
62,786
|
| 12 months or longer, Gross Unrealized Losses |
(11,279)
|
(14,018)
|
| Total Fair Value |
86,186
|
104,542
|
| Total Gross Unrealized Losses |
(11,828)
|
(15,342)
|
| Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
25,784
|
38,166
|
| Less than 12 months, Gross Unrealized Losses |
(533)
|
(1,267)
|
| 12 months or longer, Fair Value |
52,671
|
58,522
|
| 12 months or longer, Gross Unrealized Losses |
(11,101)
|
(13,701)
|
| Total Fair Value |
78,455
|
96,688
|
| Total Gross Unrealized Losses |
(11,634)
|
(14,968)
|
| Related Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
4,523
|
3,590
|
| Less than 12 months, Gross Unrealized Losses |
(16)
|
(57)
|
| 12 months or longer, Fair Value |
3,208
|
4,264
|
| 12 months or longer, Gross Unrealized Losses |
(178)
|
(317)
|
| Total Fair Value |
7,731
|
7,854
|
| Total Gross Unrealized Losses |
(194)
|
(374)
|
| U.S. government and agencies | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
2,624
|
3,010
|
| Less than 12 months, Gross Unrealized Losses |
(35)
|
(114)
|
| 12 months or longer, Fair Value |
3,796
|
3,462
|
| 12 months or longer, Gross Unrealized Losses |
(1,065)
|
(1,156)
|
| Total Fair Value |
6,420
|
6,472
|
| Total Gross Unrealized Losses |
(1,100)
|
(1,270)
|
| U.S. state, municipal and political subdivisions | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
41
|
67
|
| Less than 12 months, Gross Unrealized Losses |
(2)
|
(3)
|
| 12 months or longer, Fair Value |
766
|
842
|
| 12 months or longer, Gross Unrealized Losses |
(209)
|
(243)
|
| Total Fair Value |
807
|
909
|
| Total Gross Unrealized Losses |
(211)
|
(246)
|
| Foreign governments | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
100
|
830
|
| Less than 12 months, Gross Unrealized Losses |
(7)
|
(205)
|
| 12 months or longer, Fair Value |
1,404
|
738
|
| 12 months or longer, Gross Unrealized Losses |
(537)
|
(309)
|
| Total Fair Value |
1,504
|
1,568
|
| Total Gross Unrealized Losses |
(544)
|
(514)
|
| Corporate | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
9,873
|
19,530
|
| Less than 12 months, Gross Unrealized Losses |
(276)
|
(673)
|
| 12 months or longer, Fair Value |
39,948
|
44,051
|
| 12 months or longer, Gross Unrealized Losses |
(8,685)
|
(10,997)
|
| Total Fair Value |
49,821
|
63,581
|
| Total Gross Unrealized Losses |
(8,961)
|
(11,670)
|
| Corporate | Related Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
171
|
471
|
| Less than 12 months, Gross Unrealized Losses |
(2)
|
(4)
|
| 12 months or longer, Fair Value |
373
|
365
|
| 12 months or longer, Gross Unrealized Losses |
(16)
|
(26)
|
| Total Fair Value |
544
|
836
|
| Total Gross Unrealized Losses |
(18)
|
(30)
|
| CLO | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
4,859
|
2,675
|
| Less than 12 months, Gross Unrealized Losses |
(14)
|
(48)
|
| 12 months or longer, Fair Value |
1,545
|
2,325
|
| 12 months or longer, Gross Unrealized Losses |
(64)
|
(215)
|
| Total Fair Value |
6,404
|
5,000
|
| Total Gross Unrealized Losses |
(78)
|
(263)
|
| CLO | Related Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
1,987
|
586
|
| Less than 12 months, Gross Unrealized Losses |
(6)
|
(10)
|
| 12 months or longer, Fair Value |
158
|
544
|
| 12 months or longer, Gross Unrealized Losses |
(2)
|
(56)
|
| Total Fair Value |
2,145
|
1,130
|
| Total Gross Unrealized Losses |
(8)
|
(66)
|
| ABS | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
5,847
|
9,361
|
| Less than 12 months, Gross Unrealized Losses |
(152)
|
(155)
|
| 12 months or longer, Fair Value |
2,624
|
4,070
|
| 12 months or longer, Gross Unrealized Losses |
(210)
|
(309)
|
| Total Fair Value |
8,471
|
13,431
|
| Total Gross Unrealized Losses |
(362)
|
(464)
|
| ABS | Related Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
2,306
|
2,533
|
| Less than 12 months, Gross Unrealized Losses |
(7)
|
(43)
|
| 12 months or longer, Fair Value |
2,669
|
3,355
|
| 12 months or longer, Gross Unrealized Losses |
(160)
|
(235)
|
| Total Fair Value |
4,975
|
5,888
|
| Total Gross Unrealized Losses |
(167)
|
(278)
|
| CMBS | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
2,100
|
1,868
|
| Less than 12 months, Gross Unrealized Losses |
(42)
|
(56)
|
| 12 months or longer, Fair Value |
1,523
|
1,773
|
| 12 months or longer, Gross Unrealized Losses |
(221)
|
(315)
|
| Total Fair Value |
3,623
|
3,641
|
| Total Gross Unrealized Losses |
(263)
|
(371)
|
| CMBS | Related Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
59
|
|
| Less than 12 months, Gross Unrealized Losses |
(1)
|
|
| 12 months or longer, Fair Value |
8
|
|
| 12 months or longer, Gross Unrealized Losses |
0
|
|
| Total Fair Value |
67
|
|
| Total Gross Unrealized Losses |
(1)
|
|
| RMBS | Nonrelated Party |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Less than 12 months, Fair Value |
340
|
825
|
| Less than 12 months, Gross Unrealized Losses |
(5)
|
(13)
|
| 12 months or longer, Fair Value |
1,065
|
1,261
|
| 12 months or longer, Gross Unrealized Losses |
(110)
|
(157)
|
| Total Fair Value |
1,405
|
2,086
|
| Total Gross Unrealized Losses |
$ (115)
|
$ (170)
|