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Derivatives - Derivative Balance Sheet Classification (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 10,755	$ 11,224
Fair Value	47	(42)
Asset Derivatives	62	17
Liability Derivatives	(15)	(59)
Fixed maturities, available-for-sale
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	569	413
Fair Value	0	0
Asset Derivatives	0	0
Liability Derivatives	0	0
Other investments
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	9,108	1,452
Fair Value	34	7
Asset Derivatives	38	10
Liability Derivatives	(4)	(3)
Other liabilities
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	1,078	9,359
Fair Value	13	(49)
Asset Derivatives	24	7
Liability Derivatives	(11)	(56)
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,723	2,777
Fair Value	53	6
Asset Derivatives	57	11
Liability Derivatives	(4)	(5)
Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	2,155	2,340
Fair Value	0	0
Asset Derivatives	0	0
Liability Derivatives	0	0
Designated as Hedging Instrument | Foreign currency swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	568	437
Fair Value	53	6
Asset Derivatives	57	11
Liability Derivatives	(4)	(5)
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	8,032	8,447
Fair Value	(6)	(48)
Asset Derivatives	5	6
Liability Derivatives	(11)	(54)
Not Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	6,600	7,200
Not Designated as Hedging Instrument | Interest rate swaps and futures
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	7,245	7,567
Fair Value	(6)	(46)
Asset Derivatives	2	3
Liability Derivatives	(8)	(49)
Not Designated as Hedging Instrument | Foreign currency swaps and forwards
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	569	558
Fair Value	0	0
Asset Derivatives	0	0
Liability Derivatives	0	0
Not Designated as Hedging Instrument | Credit derivatives that purchase credit protection
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	11	112
Fair Value	0	(2)
Asset Derivatives	0	0
Liability Derivatives	0	(2)
Not Designated as Hedging Instrument | Credit derivatives in offsetting positions
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	207	210
Fair Value	0	0
Asset Derivatives	3	3
Liability Derivatives	$ (3)	$ (3)

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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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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.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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