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Investments (Components of Net Investment Gains Losses - Transaction Type) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Gain (Loss) on Securities [Line Items] |  |  |  |
Realized gains (losses) on investments sold or disposed | $ (195) | $ (20) | $ (330) | $ (566)
Impairment (losses) | 0 | (898) | 0 | (905)
Change in ACL recognized in earnings | (35) | (42) | (81) | (224)
Unrealized net gains (losses) recognized in earnings | (15) | 16 | 17 | 54
Total recognized gains (losses) | (50) | (26) | (64) | (170)
Non-investment portfolio gains (losses) | (176) | (95) | (402) | (82)
Net investment gains (losses) | (421) | $ (1,039) | (796) | $ (1,723)
Private Equity Funds |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |
Realized gains (losses) on investments sold or disposed | 3 |  | 46 |
Portfolio of investments, amount sold | 57 |  | 798 |
Proceeds from sale of equity method investment | $ 54 |  | $ 752 |

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