Segment Information - Reconciliation of Benefits and Expenses (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 01, 2023	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Total benefits and expenses	$ (392)	$ 1,305	$ (392)	[1]
Operating Segments
Segment Reporting Information [Line Items]
Total benefits and expenses		1,246	1,296
Segment Reconciling Items
Segment Reporting Information [Line Items]
Net gain (loss) on market risk benefits		(174)	(1,907)
Net (gain) loss on market risk benefits		80	44
Benefits attributed to guaranteed benefit features		153	173
Other items		$ 0	$ 2

[1] (1) Recast for the adoption of ASU 2018-12. See Notes 1 and 2 to the Condensed Consolidated Financial Statements.