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Investments - Schedule of Unrealized Net Capital Gains and Losses Included in AOCI (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair value |  |
Fixed income securities, at fair value | $ 53,961 | $ 48,865
Short-term investments | 6,994 | 5,144
Derivative instruments | 0 | 0
Gross Unrealized Gains |  |
Fixed income securities | 1,143 | 650
Short-term investments | 0 | 0
Derivative instruments | 0 | 0
Gross Unrealized Losses |  |
Fixed income securities | (629) | (1,434)
Short-term investments | (1) | (1)
Derivative instruments | (2) | (2)
Unrealized net gains (losses) |  |
Fixed income securities | 514 | (784)
Short-term investments | (1) | (1)
Derivative instruments | (2) | (2)
Limited partnership interests | 0 | (4)
Investments classified as held for sale | (50) |
Unrealized net capital gains and losses, pre-tax | 461 | (791)
Amounts recognized for: |  |
Reclassification of noncontrolling interest | 5 | 13
Deferred income taxes | (105) | 174
Unrealized net capital gains and losses, after-tax | $ 361 | $ (604)

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