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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 | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning, Assets | $ 1,578 | $ 1,151
Reported in Net investment gains (losses) | $ 1 | $ (12)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net investment (losses) gains | Net investment (losses) gains
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] | Other comprehensive (loss) income | Other comprehensive (loss) income
Reported in Other comprehensive income (loss) | $ (323) | $ (43)
Total realized and unrealized investment gains (losses) | (308) | (46)
Purchases | 580 | 612
Sales | (10) | (32)
Settlements | (145) | (130)
Transfers into Level 3 | 85 | 150
Transfers out of Level 3 | (104) | (127)
Balance, Ending, Assets | 1,676 | 1,578
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | (4) | (2)
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (321) | (44)
Corporate and other bonds |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning, Assets | 937 | 770
Reported in Net investment gains (losses) | (2) | (10)
Reported in Other comprehensive income (loss) | (184) | (32)
Total realized and unrealized investment gains (losses) | (185) | (42)
Purchases | 137 | 312
Sales | (5) | (3)
Settlements | (84) | (68)
Transfers into Level 3 | 10 | 20
Transfers out of Level 3 | 0 | (52)
Balance, Ending, Assets | 810 | 937
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | 0 | 0
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (183) | (32)
States, municipalities and political subdivisions |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning, Assets | 56 | 46
Reported in Net investment gains (losses) | 0 | 0
Reported in Other comprehensive income (loss) | (13) | (1)
Total realized and unrealized investment gains (losses) | (13) | (1)
Purchases | 0 | 12
Sales | 0 | 0
Settlements | 0 | (1)
Transfers into Level 3 | 0 | 0
Transfers out of Level 3 | 0 | 0
Balance, Ending, Assets | 43 | 56
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | 0 | 0
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (13) | (1)
Asset-backed |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning, Assets | 556 | 308
Reported in Net investment gains (losses) | 9 | 0
Reported in Other comprehensive income (loss) | (126) | (10)
Total realized and unrealized investment gains (losses) | (101) | (3)
Purchases | 424 | 287
Sales | (2) | (9)
Settlements | (70) | (61)
Transfers into Level 3 | 75 | 109
Transfers out of Level 3 | (94) | (75)
Balance, Ending, Assets | 788 | 556
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | 0 | 0
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | (125) | (11)
Equity securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, Beginning, Assets | 29 | 27
Reported in Net investment gains (losses) | (6) | (2)
Reported in Other comprehensive income (loss) | 0 | 0
Total realized and unrealized investment gains (losses) | (9) | 0
Purchases | 19 | 1
Sales | (3) | (20)
Settlements | 9 | 0
Transfers into Level 3 | 0 | 21
Transfers out of Level 3 | (10) | 0
Balance, Ending, Assets | 35 | 29
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Net income (loss) in the period | (4) | (2)
Unrealized gains (losses) on Level 3 assets and liabilities recognized in Other comprehensive income (loss) in the period | 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 | 14 | 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 | 1 | 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
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 | 16 | 7
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 | $ (3) | $ 2

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