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Investments - Schedule of Unrealized Net Capital Gains and Losses Included in AOCI (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair value |  |
Fixed income securities, at fair value | $ 57,186 | $ 52,747
Short-term investments | 8,743 | 4,537
Derivative instruments | 0 | 0
Gross Unrealized Gains |  |
Fixed income securities | 848 | 361
Short-term investments | 0 | 0
Derivative instruments | 0 | 0
Gross Unrealized Losses |  |
Fixed income securities | (394) | (1,230)
Short-term investments | 0 | (2)
Derivative instruments | (2) | (2)
Unrealized net gains (losses) |  |
Fixed income securities | 454 | (869)
Short-term investments | 0 | (2)
Derivative instruments | (2) | (2)
Investments classified as held for sale |  | (110)
Unrealized net capital gains and losses, pre-tax | 452 | (983)
Amounts recognized for: |  |
Reclassification of noncontrolling interest | 0 | 3
Deferred income taxes | (101) | 209
Unrealized net capital gains and losses, after-tax | $ 351 | $ (771)

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