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Transition - Summary Balance of Changes in Assets and Liability Position for Market Risk Benefit (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments	$ 218	$ 165	$ 428
Less: reinsured market risk benefits				$ 0
FIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments	217	164	426	478
Less: reinsured market risk benefits				0
Fixed Rate Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments	$ 1	$ 1	$ 2	1
Less: reinsured market risk benefits				0
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				531
As Previously Reported \| FIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				531
As Previously Reported \| Fixed Rate Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				0
Adjustment for reversal of AOCI adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				(116)
Adjustment for reversal of AOCI adjustments \| FIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				(116)
Adjustment for reversal of AOCI adjustments \| Fixed Rate Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				0
Remaining cumulative difference (exclusive of the instrument specific credit risk change) between June 1, 2020 carrying amount and fair value measurement for the MRBs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				(95)
Remaining cumulative difference (exclusive of the instrument specific credit risk change) between June 1, 2020 carrying amount and fair value measurement for the MRBs \| FIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				(96)
Remaining cumulative difference (exclusive of the instrument specific credit risk change) between June 1, 2020 carrying amount and fair value measurement for the MRBs \| Fixed Rate Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				1
Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				159
Adjustments \| FIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				159
Adjustments \| Fixed Rate Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				0
As adjusted
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				479
Balance, end of period, net of reinsurance				479
As adjusted \| FIA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				478
Balance, end of period, net of reinsurance				478
As adjusted \| Fixed Rate Annuities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance beginning/ending and adjustments				1
Balance, end of period, net of reinsurance				$ 1