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Investments - Schedule of Unrealized Net Capital Gains and Losses Included in AOCI (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Fair value
Fixed income securities	$ 59,115	$ 52,747
Short-term investments	4,887	4,537
Derivative instruments	0	0
Gross unrealized Gains
Fixed income securities	777	361
Short-term investments	0	0
Derivative instruments	0	0
Gross unrealized Losses
Fixed income securities	(392)	(1,230)
Short-term investments	(1)	(2)
Derivative instruments	(2)	(2)
Unrealized net gains (losses)
Fixed income securities	385	(869)
Short-term investments	(1)	(2)
Derivative instruments	(2)	(2)
Investments classified as held for sale		(110)
Unrealized net capital gains and losses, pre-tax	382	(983)
Amounts recognized for:
Reclassification of noncontrolling interest	0	3
Deferred income taxes	(85)	209
Unrealized net capital gains and losses, after-tax	$ 297	$ (771)

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Amount Recognized in Unrealized Net Capital Gains and Losses

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Represents the unrealized gains included in accumulated other comprehensive income as of the balance sheet date, for the fixed income securities which are categorized neither as held-to-maturity nor trading securities.

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The amount of unrealized gains (losses) included in accumulated other comprehensive income on fixed income securities which are categorized neither as held-to-maturity nor trading securities, as a result of fair value exceeding (under) its amortized cost, as of the balance sheet date.

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Available For Sale Short-Term Investments, Unrealized Gain Included In Other Comprehensive Income

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Available For Sale Short-Term Investments, Unrealized Gain (Loss) Included In Other Comprehensive Income

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Accumulated adjustment to deferred income taxes related to unrealized capital gains and losses, as of the balance sheet date.

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The amount of unrealized gains included in accumulated other comprehensive income on derivative instruments, as of the balance sheet date.

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The amount of unrealized gains (losses) included in accumulated other comprehensive income on derivative instruments, as a result of fair value exceeding (under) its amortized cost, as of the balance sheet date.

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The amount of unrealized losses included in accumulated other comprehensive income on derivative instruments, as of the balance sheet date.

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Fair value as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, for which an unrealized net gain or loss is included in accumulated other comprehensive income.

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Investment Held For Sale, Unrealized Gain (Loss) Included in Other Comprehensive Income

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The amount of unrealized gain (loss) before taxes on all investment securities, which are included in accumulated other comprehensive income (loss), as a result of fair value exceeding (under) its cost, as of the balance sheet date.

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Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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