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Transition - Effect of Transition Adjustments on Equity (Details) - USD ($) $ in Millions		3 Months Ended
	Dec. 31, 2020	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contractholder funds		$ 43,379		$ 40,843
MRB		218		165	$ 428
VOBA		1,572	$ 1,749	1,615	1,743
DAC		1,667	909	1,402	$ 775
Income tax expense (benefit)		14	156
Adjustment to increase opening retained earnings		$ 6,192		6,116
Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contractholder funds				$ (390)
MRB	$ 159
VOBA	(22)
DAC	(2)
Income tax expense (benefit)	19		$ 1
Adjustments | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contractholder funds	100
MRB	29
FPB	(15)
VOBA	(21)
DAC	(1)
Increase to Equity, gross of tax	92
Adjustment to increase opening retained earnings	73
Adjustments | Accumulated Other Comprehensive Earnings (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contractholder funds	115
MRB	(159)
FPB	(159)
VOBA	233
DAC	5
Increase to Equity, gross of tax	35
Income tax expense (benefit)	9
Adjustment to increase opening retained earnings	$ 26

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