Reinsurance - GMIB Reinsurers (Details) - GMIB $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) reinsurer	Dec. 31, 2021 USD ($) reinsurer
Ceded Credit Risk [Line Items]
Annuitization election period	30 days
Impact of non-performance risk
Number of external reinsurers \| reinsurer	3	3
Percent of future claim payments reinsured	100.00%	100.00%
Berkshire \| Secured \| GMIB Assets \| Collateralization risk
Ceded Credit Risk [Line Items]
Concentration percentage	100.00%
Liberty Re (Bermuda) Ltd. \| Secured \| GMIB Assets \| Collateralization risk
Ceded Credit Risk [Line Items]
Concentration percentage	100.00%
Other Contract [Member]
Ceded Credit Risk [Line Items]
GMIB liabilities	$ 404	$ 572
GMIB recoverables	430	601
Other Contract [Member] \| Berkshire
Ceded Credit Risk [Line Items]
GMIB recoverables	203	283
Other Contract [Member] \| Sun Life Assurance Company of Canada
Ceded Credit Risk [Line Items]
GMIB recoverables	119	167
Other Contract [Member] \| Liberty Re (Bermuda) Ltd.
Ceded Credit Risk [Line Items]
GMIB recoverables	$ 108	$ 151

The period of time prior to a policy anniversary when an annuitization election must occur.

No definition available.

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- Definition

The number of external reinsurers underwriting credit risk ceded by the Company.

+ References

No definition available.

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- Definition

Percent of future claim payments reinsured under reinsurance agreement(s), net of existing retrocessional arrangements at the time agreement was made.

+ References

No definition available.

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- Definition

Fair Value Measurement, Non-Performance Risk Adjustment

+ References

No definition available.

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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

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Fair value, after the 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 not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the 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 not subject to a master netting arrangement and not elected to be offset.

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