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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 | Jun. 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 | $ (426) | $ (23)
Fair value - less than twelve months | $ 7,833 | $ 3,270
Fair value as percentage of cost - Less than twelve months | 95.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (28) | $ (5)
Fair Value - Twelve months or more | $ 409 | $ 226
Fair value as percentage of cost - Twelve months or more | 94.00% | 98.00%
U.S. Government and government agencies |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (5) | $ (1)
Fair value - less than twelve months | $ 145 | $ 92
Fair value as percentage of cost - Less than twelve months | 97.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (5) | $ (1)
Fair Value - Twelve months or more | $ 60 | $ 22
Fair value as percentage of cost - Twelve months or more | 92.00% | 96.00%
States, municipalities and political subdivisions |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (43) | $ 0
Fair value - less than twelve months | $ 963 | $ 9
Fair value as percentage of cost - Less than twelve months | 96.00% | 100.00%
Unrealized Loss - Twelve months or more | $ (1) | $ 0
Fair Value - Twelve months or more | $ 10 | $ 13
Fair value as percentage of cost - Twelve months or more | 91.00% | 100.00%
Foreign government |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (10) | $ (2)
Fair value - less than twelve months | $ 210 | $ 160
Fair value as percentage of cost - Less than twelve months | 95.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (1) | $ 0
Fair Value - Twelve months or more | $ 20 | $ 0
Fair value as percentage of cost - Twelve months or more | 95.00% | 0.00%
Residential MBS |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (117) | $ (3)
Fair value - less than twelve months | $ 1,279 | $ 419
Fair value as percentage of cost - Less than twelve months | 92.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (1) | $ 0
Fair Value - Twelve months or more | $ 16 | $ 7
Fair value as percentage of cost - Twelve months or more | 94.00% | 100.00%
Commercial MBS |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (2) | $ 0
Fair value - less than twelve months | $ 71 | $ 34
Fair value as percentage of cost - Less than twelve months | 97.00% | 100.00%
Unrealized Loss - Twelve months or more | $ 0 | $ 0
Fair Value - Twelve months or more | $ 0 | $ 0
Fair value as percentage of cost - Twelve months or more | 0.00% | 0.00%
Collateralized loan obligations |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (40) | $ (1)
Fair value - less than twelve months | $ 1,432 | $ 806
Fair value as percentage of cost - Less than twelve months | 97.00% | 100.00%
Unrealized Loss - Twelve months or more | $ (2) | $ (1)
Fair Value - Twelve months or more | $ 99 | $ 77
Fair value as percentage of cost - Twelve months or more | 98.00% | 99.00%
Other asset-backed securities |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (110) | $ (8)
Fair value - less than twelve months | $ 1,930 | $ 1,250
Fair value as percentage of cost - Less than twelve months | 95.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (10) | $ (3)
Fair Value - Twelve months or more | $ 122 | $ 81
Fair value as percentage of cost - Twelve months or more | 92.00% | 96.00%
Corporate and other |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized loss - less than twelve months | $ (99) | $ (8)
Fair value - less than twelve months | $ 1,803 | $ 500
Fair value as percentage of cost - Less than twelve months | 95.00% | 98.00%
Unrealized Loss - Twelve months or more | $ (8) | $ 0
Fair Value - Twelve months or more | $ 82 | $ 26
Fair value as percentage of cost - Twelve months or more | 91.00% | 100.00%

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