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Changes in liabilities classified as MRBs, ASU 2018-12 Transition (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Jan. 01, 2021	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Market Risk Benefit [Line Items]
Market risk benefit liabilities		$ 10,751		$ 10,411	$ 16,062
Change in market risk benefits		(198)	$ 1,580	(4,105)	(4,142)
Previously Reported
Market Risk Benefit [Line Items]
Market risk benefit liabilities				0	0
Change in market risk benefits				0	0
Variable Annuities
Market Risk Benefit [Line Items]
Market risk benefit liabilities	$ 18,421
Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change		8,557	10,208	8,253	11,639	$ 14,969
Market Risk Benefit, Reinsurance Recoverable, after Allowance	169	70	93	71	118
Market Risk Benefit, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change	18,252	$ 10,238	$ 13,273	$ 9,926	$ 15,608
Variable Annuities \| Previously Reported
Market Risk Benefit [Line Items]
Market risk benefit liabilities						$ 8,622
Variable Annuities \| Revision of Prior Period, Accounting Standards Update, Adjustment
Market Risk Benefit [Line Items]
Change in market risk benefits	6,347
Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change	$ 3,452