Investments (Investment Related Gains (Losses) Net) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Investments [Abstract]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	$ (14)	$ (29)	$ (36)	$ (35)
Gain on investment activity	36	30	95	66
Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments	(124)	(65)	(289)	(152)
Gain (Loss) on Sale of Equity Investments	(3)	3	(17)	2
Other impairment losses and change in mortgage loan provision	(12)	(18)	(10)	(14)
Derivatives and other, net	6	(3)	6	(2)
Total investment related gains (losses), net	(76)	(44)	(246)	(123)
Change In Fair Value Of Certain Limited Partnership Investments And Other, Net	(42)	6	(36)	(1)
Impairment Losses On Debt Securities Available for Sale	0	(2)	(1)	(2)
Gain (Loss) on Sale of Derivatives	88	50	31	48
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	(1)	3	43	(8)
Other Receivable, Allowance for Credit Loss, Noncurrent	(3)	(3)	(3)	(4)
Gains (Losses) on Sales of Other Real Estate	$ (7)	$ (16)	$ (29)	$ (21)

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Net realized gains or losses on investments during the period related to the change in value of embedded derivatives and other realized gains and losses not otherwise categorized.

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Impairment Losses On Debt Securities Available for Sale

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Other change in allowance for credit losses and impairments

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Other impairment losses and change in mortgage loan provision.

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Amount of increase (decrease) in allowance for credit loss 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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Amount of realized gain 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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Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

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Amount of realized gain (loss) on investment.

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