Derivatives (Fair Value Hedges) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 80	$ 98
Fixed maturity securities AFS \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)	(100)	(111)
Debt Instruments, Carrying Amount	370	454
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	3	3
Mortgages \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	223	359
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	(5)	(11)
Future policy benefits [Member] \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	2,661	2,863
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	337	191
Policyholder Account Balances [Member] \| Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Debt Instruments, Carrying Amount	2,252	1,911
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	$ 170	$ 25

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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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.

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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.

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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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