Derivatives (Fair Value Hedges) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 86	$ 86
Fixed maturity securities AFS \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)	(90)	(91)
Debt Instruments, Carrying Amount	230	241
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	0	0
Mortgages \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	163	130
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	0	(1)
Future policy benefits [Member] \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	2,563	2,583
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	285	359
Policyholder Account Balances [Member] \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	2,386	2,170
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	$ 45	$ 223

Debt Instruments, Carrying Amount

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

+ References

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-Name Accounting Standards Codification
-Section 55
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk, remaining after discontinued hedge.

+ References

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- Definition

Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk.

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