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v3.25.1

Investments - Schedule of Gross Unrealized Losses and Fair Value by Type and Length of Time Held in a Continuous Unrealized Loss Position (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 USD ($) contract | Dec. 31, 2024 USD ($) contract
Total unrealized losses |  |
Fixed income securities, at fair value | $ 51,993 | $ 52,747
Fixed income securities |  |
Less than 12 months |  |
Number of issues | contract | 1,912 | 2,204
Fair value | $ 15,525 | $ 22,824
Unrealized losses | $ (310) | $ (491)
12 months or more |  |
Number of issues | contract | 2,228 | 2,583
Fair value | $ 9,064 | $ 10,500
Unrealized losses | (573) | (739)
Total unrealized losses |  |
Total unrealized losses | (883) | (1,230)
Fixed income securities, at fair value | 18 | 16
Fixed income securities, unrealized losses | 1 | 1
Fixed income securities, credit loss allowance | $ 3 | $ 3
U.S. government and agencies |  |
Less than 12 months |  |
Number of issues | contract | 159 | 179
Fair value | $ 2,952 | $ 8,520
Unrealized losses | $ (67) | $ (256)
12 months or more |  |
Number of issues | contract | 87 | 99
Fair value | $ 692 | $ 801
Unrealized losses | (51) | (74)
Total unrealized losses |  |
Total unrealized losses | (118) | (330)
Fixed income securities, at fair value | $ 10,705 | $ 11,108
Municipal |  |
Less than 12 months |  |
Number of issues | contract | 912 | 990
Fair value | $ 4,909 | $ 4,889
Unrealized losses | $ (123) | $ (67)
12 months or more |  |
Number of issues | contract | 898 | 1,089
Fair value | $ 1,447 | $ 1,693
Unrealized losses | (100) | (109)
Total unrealized losses |  |
Total unrealized losses | (223) | (176)
Fixed income securities, at fair value | $ 7,474 | $ 8,842
Corporate |  |
Less than 12 months |  |
Number of issues | contract | 718 | 943
Fair value | $ 6,842 | $ 9,178
Unrealized losses | $ (114) | $ (166)
12 months or more |  |
Number of issues | contract | 1,093 | 1,237
Fair value | $ 6,816 | $ 7,877
Unrealized losses | (412) | (544)
Total unrealized losses |  |
Total unrealized losses | (526) | (710)
Fixed income securities, at fair value | $ 30,767 | $ 30,192
Foreign government |  |
Less than 12 months |  |
Number of issues | contract | 20 | 42
Fair value | $ 70 | $ 159
Unrealized losses | $ (1) | $ (2)
12 months or more |  |
Number of issues | contract | 69 | 73
Fair value | $ 61 | $ 73
Unrealized losses | (7) | (8)
Total unrealized losses |  |
Total unrealized losses | (8) | (10)
Fixed income securities, at fair value | $ 1,334 | $ 1,364
ABS |  |
Less than 12 months |  |
Number of issues | contract | 103 | 50
Fair value | $ 752 | $ 78
Unrealized losses | $ (5) | $ 0
12 months or more |  |
Number of issues | contract | 81 | 85
Fair value | $ 48 | $ 56
Unrealized losses | (3) | (4)
Total unrealized losses |  |
Total unrealized losses | (8) | (4)
Fixed income securities, at fair value | $ 1,713 | $ 1,241
Investment grade fixed income securities |  |
Less than 12 months |  |
Number of issues | contract | 1,678 | 2,002
Fair value | $ 14,096 | $ 21,846
Unrealized losses | $ (272) | $ (473)
12 months or more |  |
Number of issues | contract | 2,028 | 2,367
Fair value | $ 7,983 | $ 9,281
Unrealized losses | (500) | (655)
Total unrealized losses |  |
Total unrealized losses | $ (772) | $ (1,128)
Below investment grade fixed income securities |  |
Less than 12 months |  |
Number of issues | contract | 234 | 202
Fair value | $ 1,429 | $ 978
Unrealized losses | $ (38) | $ (18)
12 months or more |  |
Number of issues | contract | 200 | 216
Fair value | $ 1,081 | $ 1,219
Unrealized losses | (73) | (84)
Total unrealized losses |  |
Total unrealized losses | $ (111) | $ (102)

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