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v3.23.3

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 | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) contract | Dec. 31, 2022 USD ($) contract
Total unrealized losses |  |
Fixed income securities | $ 46,771 | $ 42,485
U.S. government and agencies |  |
Less than 12 months |  |
Number of issues | contract | 119 | 112
Fair value | $ 4,868 | $ 4,900
Unrealized losses | $ (234) | $ (138)
12 months or more |  |
Number of issues | contract | 128 | 75
Fair value | $ 3,289 | $ 2,393
Unrealized losses | (151) | (93)
Total unrealized losses |  |
Total unrealized losses | (385) | (231)
Fixed income securities | $ 8,245 | $ 7,898
Municipal |  |
Less than 12 months |  |
Number of issues | contract | 1,713 | 3,015
Fair value | $ 3,644 | $ 3,944
Unrealized losses | $ (158) | $ (215)
12 months or more |  |
Number of issues | contract | 2,057 | 507
Fair value | $ 2,710 | $ 740
Unrealized losses | (305) | (111)
Total unrealized losses |  |
Total unrealized losses | (463) | (326)
Fixed income securities | $ 6,584 | $ 6,210
Corporate |  |
Less than 12 months |  |
Number of issues | contract | 1,112 | 2,085
Fair value | $ 10,982 | $ 18,072
Unrealized losses | $ (501) | $ (1,389)
12 months or more |  |
Number of issues | contract | 2,200 | 845
Fair value | $ 17,584 | $ 6,105
Unrealized losses | (1,816) | (956)
Total unrealized losses |  |
Total unrealized losses | (2,317) | (2,345)
Fixed income securities | $ 29,706 | $ 26,263
Foreign government |  |
Less than 12 months |  |
Number of issues | contract | 68 | 74
Fair value | $ 734 | $ 739
Unrealized losses | $ (27) | $ (22)
12 months or more |  |
Number of issues | contract | 89 | 42
Fair value | $ 397 | $ 200
Unrealized losses | (34) | (18)
Total unrealized losses |  |
Total unrealized losses | (61) | (40)
Fixed income securities | $ 1,135 | $ 957
ABS |  |
Less than 12 months |  |
Number of issues | contract | 90 | 194
Fair value | $ 57 | $ 874
Unrealized losses | $ 0 | $ (27)
12 months or more |  |
Number of issues | contract | 170 | 83
Fair value | $ 738 | $ 109
Unrealized losses | (11) | (8)
Total unrealized losses |  |
Total unrealized losses | (11) | (35)
Fixed income securities | $ 1,101 | $ 1,157
Fixed income securities |  |
Less than 12 months |  |
Number of issues | contract | 3,102 | 5,480
Fair value | $ 20,285 | $ 28,529
Unrealized losses | $ (920) | $ (1,791)
12 months or more |  |
Number of issues | contract | 4,644 | 1,552
Fair value | $ 24,718 | $ 9,547
Unrealized losses | (2,317) | (1,186)
Total unrealized losses |  |
Total unrealized losses | (3,237) | (2,977)
Fixed income securities | 37 | 10
Fixed income securities, unrealized losses | 7 | 5
Fixed income securities, credit loss allowance | $ 15 | $ 11
Investment grade fixed income securities |  |
Less than 12 months |  |
Number of issues | contract | 2,954 | 4,959
Fair value | $ 19,517 | $ 25,487
Unrealized losses | $ (895) | $ (1,409)
12 months or more |  |
Number of issues | contract | 4,216 | 1,437
Fair value | $ 21,946 | $ 8,791
Unrealized losses | (1,936) | (1,009)
Total unrealized losses |  |
Total unrealized losses | $ (2,831) | $ (2,418)
Below investment grade fixed income securities |  |
Less than 12 months |  |
Number of issues | contract | 148 | 521
Fair value | $ 768 | $ 3,042
Unrealized losses | $ (25) | $ (382)
12 months or more |  |
Number of issues | contract | 428 | 115
Fair value | $ 2,772 | $ 756
Unrealized losses | (381) | (177)
Total unrealized losses |  |
Total unrealized losses | $ (406) | $ (559)

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