Liability For Future Policy Benefits (Additional Insurance Reserves) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024
Additional Liability, Long-Duration Insurance [Line Items]
Balance, including amounts in AOCI, EOP, post-flooring	$ 18,745	$ 16,874
Total balance after reinsurance recoverables	7,720	7,068
Other businesses
Additional Liability, Long-Duration Insurance [Line Items]
Less: Reinsurance recoverables	211	146
Total balance after reinsurance recoverables	268	110
Guaranteed Universal Life \| U.S. Legacy Products
Additional Liability, Long-Duration Insurance [Line Items]
Balance, including amounts in AOCI, BOP, post-flooring	17,904	16,205
Flooring impact and amounts in AOCI	315	460
Balance, excluding amounts in AOCI, BOP, pre-flooring	18,219	16,665
Effect of actual variances from expected experience and other activity			$ 19	$ 6
Adjusted balance, BOP			$ 18,238	$ 16,671
Assessment Collected	279	259
Interest accrual	151	139
Benefits paid	(74)	(49)
Other adjustments	(4)	0
Balance, excluding amounts in AOCI, EOP, pre-flooring	18,590	17,020
Flooring impact and amounts in AOCI	(324)	(402)
Balance, including amounts in AOCI, EOP, post-flooring	18,266	16,618
Less: Reinsurance recoverables	10,814	9,660
Total balance after reinsurance recoverables	$ 7,452	$ 6,958
Guaranteed Universal Life \| U.S. Legacy Products \| Gross Basis
Additional Liability, Long-Duration Insurance [Line Items]
Weighted-average duration of the liability in years (at original discount rate)	21 years	21 years
Weighted-average interest rate (at original discount rate)	3.33%	3.38%

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Additional Liability, Long-Duration Insurance, Assessment Collected

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Additional Liability, Long-Duration Insurance, Before Reinsurance

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Amount, after effect of reinsurance, of present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Amount of cash outflow to policyholder related to benefit payment for present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Current weighted-average discount rate used to measure present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Amount of interest income (expense) for present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Amount, after allowance for credit loss, recoverable under reinsurance for present value of total expected payment to policyholder in excess of present value of total expected assessment. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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Weighted-average duration of present value of total expected payment to policyholder in excess of present value of total expected assessment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

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