Segments - Operating Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 5,922	$ 4,230	$ 7,649
Fair Value Net Derivative Asset Liability Recurring Basis Still Held Unrealized Gain Loss, Statement Of Income Extensible List, Not Disclosed Flag	Gain (loss) on change in fair value of derivatives related to guaranteed benefits	Gain (loss) on change in fair value of derivatives related to guaranteed benefits	Gain (loss) on change in fair value of derivatives related to guaranteed benefits
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (254)	$ (2,286)	$ 2,054
Investment Gains (Losses) and Other Related Adjustments	(186)	(138)
Net investment gains (losses) and related charges and adjustments			13
Gain (loss) on change in fair value of derivatives related to guaranteed benefits	(23)	(1)	22
Revenues related to business exited through reinsurance or divestment	(132)	(3,368)	1,494
Revenues attributable to noncontrolling interests	(33)	809	215
Other adjustments	121	413	310
Operating Segments
Segment Reporting Information [Line Items]
Total revenues	6,176	6,516	5,595
Retirement | Operating Segments
Segment Reporting Information [Line Items]
Total revenues	2,772	3,238	2,717
Investment Management | Operating Segments
Segment Reporting Information [Line Items]
Total revenues	756	783	702
Investment Management | Intersegment
Segment Reporting Information [Line Items]
Total revenues	91	92	110
Employee Benefits | Operating Segments
Segment Reporting Information [Line Items]
Total revenues	2,582	2,395	2,155
Corporate
Segment Reporting Information [Line Items]
Total revenues	$ 67	$ 100	$ 21