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Investments - Gross unrealized losses on securities by investment category and length of time that have been in a continuous unrealized loss position (Details) - USD ($) $ in Millions | Mar. 31, 2026 | Dec. 31, 2025
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Total fixed maturities |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (41) | $ (7)
Fair value - less than twelve months | $ 3,353 | $ 909
Fair value as percentage of cost - less than twelve months | 99.00% | 99.00%
Unrealized Loss - twelve months or more | $ (197) | $ (186)
Fair Value - twelve months or more | $ 2,681 | $ 3,133
Fair value as percentage of cost - twelve months or more | 93.00% | 94.00%
U.S. government and government agencies |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (1) | $ 0
Fair value - less than twelve months | $ 47 | $ 15
Fair value as percentage of cost - less than twelve months | 98.00% | 100.00%
Unrealized Loss - twelve months or more | $ 0 | $ 0
Fair Value - twelve months or more | $ 33 | $ 44
Fair value as percentage of cost - twelve months or more | 100.00% | 100.00%
States, municipalities and political subdivisions |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (6) | $ 0
Fair value - less than twelve months | $ 273 | $ 47
Fair value as percentage of cost - less than twelve months | 98.00% | 100.00%
Unrealized Loss - twelve months or more | $ (29) | $ (26)
Fair Value - twelve months or more | $ 264 | $ 426
Fair value as percentage of cost - twelve months or more | 90.00% | 94.00%
Foreign government |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ 0 | $ 0
Fair value - less than twelve months | $ 137 | $ 52
Fair value as percentage of cost - less than twelve months | 100.00% | 100.00%
Unrealized Loss - twelve months or more | $ 0 | $ 0
Fair Value - twelve months or more | $ 0 | $ 5
Fair value as percentage of cost - twelve months or more | 0.00% | 100.00%
Residential MBS |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (13) | $ (4)
Fair value - less than twelve months | $ 1,177 | $ 186
Fair value as percentage of cost - less than twelve months | 99.00% | 98.00%
Unrealized Loss - twelve months or more | $ (104) | $ (99)
Fair Value - twelve months or more | $ 888 | $ 914
Fair value as percentage of cost - twelve months or more | 90.00% | 90.00%
Collateralized loan obligations |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ 0 | $ 0
Fair value - less than twelve months | $ 160 | $ 124
Fair value as percentage of cost - less than twelve months | 100.00% | 100.00%
Unrealized Loss - twelve months or more | $ (3) | $ (3)
Fair Value - twelve months or more | $ 121 | $ 147
Fair value as percentage of cost - twelve months or more | 98.00% | 98.00%
Other asset-backed securities |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (10) | $ (1)
Fair value - less than twelve months | $ 813 | $ 311
Fair value as percentage of cost - less than twelve months | 99.00% | 100.00%
Unrealized Loss - twelve months or more | $ (39) | $ (37)
Fair Value - twelve months or more | $ 750 | $ 803
Fair value as percentage of cost - twelve months or more | 95.00% | 96.00%
Corporate and other |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (11) | $ (2)
Fair value - less than twelve months | $ 746 | $ 174
Fair value as percentage of cost - less than twelve months | 99.00% | 99.00%
Unrealized Loss - twelve months or more | $ (22) | $ (21)
Fair Value - twelve months or more | $ 625 | $ 794
Fair value as percentage of cost - twelve months or more | 97.00% | 97.00%

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