Segment Information - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenues	$ 3,482	$ 3,577	$ 7,582	$ 8,841
Other Operations
Segment Reporting Information [Line Items]
Revenues	55	32	114	106
Revenue adjustments from annuity and life insurance product features
Segment Reporting Information [Line Items]
Revenues	196	268	589	154
Credit loss-related adjustments, pre-tax
Segment Reporting Information [Line Items]
Revenues	(88)	(25)	(123)	(50)
Investment gains (losses)
Segment Reporting Information [Line Items]
Revenues	(57)	(1,091)	(317)	(4,228)
Changes in the fair value of reinsurance-related embedded derivatives, trading securities and certain mortgage loans
Segment Reporting Information [Line Items]
Revenues	(416)	190	(326)	251
GLB rider fees ceded to LNBAR
Segment Reporting Information [Line Items]
Revenues	(242)	(227)	(703)	(694)
Gains (losses) on other non-financial assets – sale of subsidiaries/businesses
Segment Reporting Information [Line Items]
Revenues	0	0	481	0
Annuities | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,101	1,095	3,421	3,236
Life Insurance | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,249	1,627	3,748	4,920
Group Protection | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,353	1,387	(273)	4,174
Retirement Plan Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 331	$ 321	$ 971	$ 972