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Fair Value (Table of reconciliation for assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance, Beginning, Assets | $ 1,844 | $ 1,614 | $ 1,676 | $ 1,578
Reported in Net investment gains (losses) | $ (1) | $ 0 | $ (1) | $ 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net investment losses | Net investment losses | Net investment losses | Net investment losses
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] | Other comprehensive income (loss) | Other comprehensive income (loss) | Other comprehensive income (loss) | Other comprehensive income (loss)
Reported in Other comprehensive income (loss) | $ (23) | $ (139) | $ 9 | $ (247)
Total realized and unrealized investment gains (losses) | (20) | (135) | 11 | (238)
Purchases | 155 | 143 | 291 | 362
Sales | (2) | (5) | (2) | (10)
Settlements | (22) | (51) | (34) | (90)
Transfers into Level 3 | 11 | 14 | 34 | 29
Transfers out of Level 3 | (43) | 0 | (53) | (51)
Balance, Ending, Assets | 1,923 | 1,580 | 1,923 | 1,580
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | (1) | (3) | (7) | (1)
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (23) | (138) | 8 | (246)
Corporate and other bonds |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance, Beginning, Assets | 912 | 915 | 810 | 937
Reported in Net investment gains (losses) | 0 | (1) | 0 | (2)
Reported in Other comprehensive income (loss) | (15) | (82) | 9 | (153)
Total realized and unrealized investment gains (losses) | (15) | (83) | 9 | (155)
Purchases | 68 | 51 | 149 | 118
Sales | 0 | 0 | 0 | (5)
Settlements | (5) | (37) | (8) | (59)
Transfers into Level 3 | 11 | 0 | 11 | 10
Transfers out of Level 3 | 0 | 0 | 0 | 0
Balance, Ending, Assets | 971 | 846 | 971 | 846
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | 0 | 0 | 0 | 0
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (15) | (81) | 9 | (153)
States, municipalities and political subdivisions |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance, Beginning, Assets | 44 | 51 | 43 | 56
Reported in Net investment gains (losses) | 0 | 0 | 0 | 0
Reported in Other comprehensive income (loss) | (1) | (5) | 0 | (10)
Total realized and unrealized investment gains (losses) | (1) | (5) | 0 | (10)
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Balance, Ending, Assets | 43 | 46 | 43 | 46
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | 0 | 0 | 0 | 0
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (1) | (5) | 0 | (10)
Asset-backed |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance, Beginning, Assets | 859 | 604 | 788 | 556
Reported in Net investment gains (losses) | (1) | 3 | (1) | 5
Reported in Other comprehensive income (loss) | (7) | (52) | 0 | (84)
Total realized and unrealized investment gains (losses) | (3) | (44) | 9 | (73)
Purchases | 87 | 92 | 142 | 232
Sales | 0 | (2) | 0 | (2)
Settlements | (17) | (23) | (26) | (40)
Transfers into Level 3 | 0 | 14 | 23 | 19
Transfers out of Level 3 | (43) | 0 | (53) | (51)
Balance, Ending, Assets | 883 | 641 | 883 | 641
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | 0 | 0 | 0 | 0
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (7) | (52) | (1) | (83)
Equity securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance, Beginning, Assets | 29 | 44 | 35 | 29
Reported in Net investment gains (losses) | 0 | (2) | 0 | (3)
Reported in Other comprehensive income (loss) | 0 | 0 | 0 | 0
Total realized and unrealized investment gains (losses) | (1) | (3) | (7) | 0
Purchases | 0 | 0 | 0 | 12
Sales | (2) | (3) | (2) | (3)
Settlements | 0 | 9 | 0 | 9
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Balance, Ending, Assets | 26 | 47 | 26 | 47
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | (1) | (3) | (7) | (1)
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | 0 | 0 | 0 | 0
Reported in Net investment income |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Reported in Net investment income | 4 | 4 | 3 | 9
Reported in Net investment income | Corporate and other bonds |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Reported in Net investment income | 0 | 0 | 0 | 0
Reported in Net investment income | States, municipalities and political subdivisions |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Reported in Net investment income | 0 | 0 | 0 | 0
Reported in Net investment income | Asset-backed |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Reported in Net investment income | 5 | 5 | 10 | 6
Reported in Net investment income | Equity securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Reported in Net investment income | $ (1) | $ (1) | $ (7) | $ 3

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