Derivative Financial Instruments - Notional and Fair Values (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivatives, Asset Fair Value	$ 180	$ 156
Derivatives, Liability Fair Value	234	173
Credit contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	146	110
Interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	10,311	9,576
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	637	601
Designated as Hedging Instrument \| Interest rate contracts \| Cash flow hedges
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	18	18
Derivatives, Asset Fair Value	0	0
Derivatives, Liability Fair Value	0	0
Designated as Hedging Instrument \| Foreign exchange contracts \| Cash flow hedges
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	579	567
Derivatives, Asset Fair Value	16	14
Derivatives, Liability Fair Value	11	15
Not Designated as Hedging Instrument \| Credit contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	146	110
Derivatives, Asset Fair Value	0	0
Derivatives, Liability Fair Value	1	0
Not Designated as Hedging Instrument \| Interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	12,269	10,514
Derivatives, Asset Fair Value	158	135
Derivatives, Liability Fair Value	198	129
Not Designated as Hedging Instrument \| Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	58	34
Derivatives, Asset Fair Value	1	0
Derivatives, Liability Fair Value	0	0
Not Designated as Hedging Instrument \| Fixed maturities
Derivatives, Fair Value [Line Items]
Derivatives, Asset Fair Value	5	7
Derivatives, Liability Fair Value	0	0
Not Designated as Hedging Instrument \| Within products
Derivatives, Fair Value [Line Items]
Derivatives, Asset Fair Value	0	0
Derivatives, Liability Fair Value	19	28
Not Designated as Hedging Instrument \| Reinsurance agreements
Derivatives, Fair Value [Line Items]
Derivatives, Asset Fair Value	0	0
Derivatives, Liability Fair Value	0	0
Not Designated as Hedging Instrument \| Managed Custody Guarantees
Derivatives, Fair Value [Line Items]
Derivatives, Asset Fair Value	0	0
Derivatives, Liability Fair Value	$ 5	$ 1

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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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.

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No definition available.

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