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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 | Sep. 30, 2022 | Dec. 31, 2021
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Total fixed maturities |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (635) | $ (23)
Fair value - less than twelve months | $ 8,311 | $ 3,270
Fair value as percentage of cost - Less than twelve months | 93.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (93) | $ (5)
Fair Value - Twelve months or more | $ 1,073 | $ 226
Fair value as percentage of cost - Twelve months or more | 92.00% | 98.00%
U.S. government and government agencies |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (4) | $ (1)
Fair value - less than twelve months | $ 108 | $ 92
Fair value as percentage of cost - Less than twelve months | 96.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (11) | $ (1)
Fair Value - Twelve months or more | $ 106 | $ 22
Fair value as percentage of cost - Twelve months or more | 91.00% | 96.00%
States, municipalities and political subdivisions |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (98) | $ 0
Fair value - less than twelve months | $ 1,124 | $ 9
Fair value as percentage of cost - Less than twelve months | 92.00% | 100.00%
Unrealized Loss - Twelve months or more | $ (2) | $ 0
Fair Value - Twelve months or more | $ 14 | $ 13
Fair value as percentage of cost - Twelve months or more | 88.00% | 100.00%
Foreign government |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (7) | $ (2)
Fair value - less than twelve months | $ 145 | $ 160
Fair value as percentage of cost - Less than twelve months | 95.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (5) | $ 0
Fair Value - Twelve months or more | $ 61 | $ 0
Fair value as percentage of cost - Twelve months or more | 92.00% | 0.00%
Residential MBS |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (174) | $ (3)
Fair value - less than twelve months | $ 1,421 | $ 419
Fair value as percentage of cost - Less than twelve months | 89.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (2) | $ 0
Fair Value - Twelve months or more | $ 19 | $ 7
Fair value as percentage of cost - Twelve months or more | 90.00% | 100.00%
Commercial MBS |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (3) | $ 0
Fair value - less than twelve months | $ 68 | $ 34
Fair value as percentage of cost - Less than twelve months | 96.00% | 100.00%
Unrealized Loss - Twelve months or more | $ 0 | $ 0
Fair Value - Twelve months or more | $ 10 | $ 0
Fair value as percentage of cost - Twelve months or more | 100.00% | 0.00%
Collateralized loan obligations |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (61) | $ (1)
Fair value - less than twelve months | $ 1,465 | $ 806
Fair value as percentage of cost - Less than twelve months | 96.00% | 100.00%
Unrealized Loss - Twelve months or more | $ (11) | $ (1)
Fair Value - Twelve months or more | $ 329 | $ 77
Fair value as percentage of cost - Twelve months or more | 97.00% | 99.00%
Other asset-backed securities |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (137) | $ (8)
Fair value - less than twelve months | $ 1,806 | $ 1,250
Fair value as percentage of cost - Less than twelve months | 93.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (34) | $ (3)
Fair Value - Twelve months or more | $ 326 | $ 81
Fair value as percentage of cost - Twelve months or more | 91.00% | 96.00%
Corporate and other |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (151) | $ (8)
Fair value - less than twelve months | $ 2,174 | $ 500
Fair value as percentage of cost - Less than twelve months | 94.00% | 98.00%
Unrealized Loss - Twelve months or more | $ (28) | $ 0
Fair Value - Twelve months or more | $ 208 | $ 26
Fair value as percentage of cost - Twelve months or more | 88.00% | 100.00%

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