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v3.25.1

Investments - Unrealized Loss Position (Details) $ in Millions | Mar. 31, 2025 USD ($) security | Dec. 31, 2024 USD ($) security
--- | --- | ---
Number of Securities |  |
Number of Securities, Less than 12 months | security | 3,012 | 4,502
Number of Securities, Greater than 12 months | security | 3,711 | 4,174
Number of Securities | security | 6,723 | 8,676
Fair Value |  |
Fair Value, Less than 12 months | $ 4,867 | $ 7,506
Fair Value, Greater than 12 months | 5,035 | 5,734
Fair Value | 9,902 | 13,240
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 71 | 127
Unrealized Losses, Greater than 12 months | 476 | 580
Unrealized Losses | $ 547 | $ 707
U.S. government securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 60 | 266
Number of Securities, Greater than 12 months | security | 121 | 155
Number of Securities | security | 181 | 421
Fair Value |  |
Fair Value, Less than 12 months | $ 194 | $ 1,053
Fair Value, Greater than 12 months | 287 | 394
Fair Value | 481 | 1,447
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 5 | 18
Unrealized Losses, Greater than 12 months | 14 | 20
Unrealized Losses | $ 19 | $ 38
States, municipalities and political subdivisions |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 39 | 100
Number of Securities, Greater than 12 months | security | 113 | 137
Number of Securities | security | 152 | 237
Fair Value |  |
Fair Value, Less than 12 months | $ 87 | $ 181
Fair Value, Greater than 12 months | 168 | 201
Fair Value | 255 | 382
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 4 | 3
Unrealized Losses, Greater than 12 months | 9 | 15
Unrealized Losses | $ 13 | $ 18
U.S. corporate securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 1,856 | 3,119
Number of Securities, Greater than 12 months | security | 2,378 | 2,602
Number of Securities | security | 4,234 | 5,721
Fair Value |  |
Fair Value, Less than 12 months | $ 2,384 | $ 4,144
Fair Value, Greater than 12 months | 3,143 | 3,395
Fair Value | 5,527 | 7,539
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 40 | 64
Unrealized Losses, Greater than 12 months | 294 | 348
Unrealized Losses | $ 334 | $ 412
Foreign securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 419 | 599
Number of Securities, Greater than 12 months | security | 550 | 616
Number of Securities | security | 969 | 1,215
Fair Value |  |
Fair Value, Less than 12 months | $ 577 | $ 810
Fair Value, Greater than 12 months | 770 | 874
Fair Value | 1,347 | 1,684
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 11 | 21
Unrealized Losses, Greater than 12 months | 70 | 90
Unrealized Losses | $ 81 | $ 111
Residential mortgage-backed securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 46 | 89
Number of Securities, Greater than 12 months | security | 339 | 361
Number of Securities | security | 385 | 450
Fair Value |  |
Fair Value, Less than 12 months | $ 130 | $ 267
Fair Value, Greater than 12 months | 315 | 342
Fair Value | 445 | 609
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 1 | 5
Unrealized Losses, Greater than 12 months | 40 | 49
Unrealized Losses | $ 41 | $ 54
Commercial mortgage-backed securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 114 | 186
Number of Securities, Greater than 12 months | security | 158 | 237
Number of Securities | security | 272 | 423
Fair Value |  |
Fair Value, Less than 12 months | $ 391 | $ 628
Fair Value, Greater than 12 months | 303 | 464
Fair Value | 694 | 1,092
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 4 | 11
Unrealized Losses, Greater than 12 months | 46 | 56
Unrealized Losses | $ 50 | $ 67
Other asset-backed securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 478 | 139
Number of Securities, Greater than 12 months | security | 48 | 62
Number of Securities | security | 526 | 201
Fair Value |  |
Fair Value, Less than 12 months | $ 1,104 | $ 414
Fair Value, Greater than 12 months | 43 | 58
Fair Value | 1,147 | 472
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 6 | 5
Unrealized Losses, Greater than 12 months | 3 | 2
Unrealized Losses | $ 9 | $ 7
Redeemable preferred securities |  |
Number of Securities |  |
Number of Securities, Less than 12 months | security | 0 | 4
Number of Securities, Greater than 12 months | security | 4 | 4
Number of Securities | security | 4 | 8
Fair Value |  |
Fair Value, Less than 12 months | $ 0 | $ 9
Fair Value, Greater than 12 months | 6 | 6
Fair Value | 6 | 15
Unrealized Losses |  |
Unrealized Losses, Less than 12 months | 0 | 0
Unrealized Losses, Greater than 12 months | 0 | 0
Unrealized Losses | $ 0 | $ 0

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