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Investments - Schedule of Net Gains (Losses) on Investments and Derivatives by Asset Type (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | $ 243 | $ (86) | $ (24) | $ (223)
Fixed income securities |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | 105 | (129) | (92) | (397)
Equity securities |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | 119 | (35) | 195 | 153
Mortgage loans |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | (1) | (1) | 0 | (4)
Limited partnership interests |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | (8) | (6) | (13) | 1
Derivatives |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | 20 | 31 | (3) | (28)
Other investments |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | 8 | 54 | 12 | 52
Other |  |  |  |
Realized capital gains and losses by asset type |  |  |  |
Net gains (losses) on investments and derivatives | $ 0 | $ 0 | $ (123) | $ 0

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