Segment Information - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Revenues	$ 44	$ 1,247	$ 4,100	$ 5,264
Other Operations
Segment Reporting Information [Line Items]
Revenues	34	36	59	75
Revenue adjustments from annuity and life insurance product features
Segment Reporting Information [Line Items]
Revenues	224	(23)	394	(114)
Credit loss-related adjustments, after-tax
Segment Reporting Information [Line Items]
Revenues	(33)	(5)	(33)	(26)
Investment gains (losses)
Segment Reporting Information [Line Items]
Revenues	(204)	(3,081)	(260)	(3,137)
Changes in the fair value of reinsurance-related embedded derivatives, trading securities and certain mortgage loans
Segment Reporting Information [Line Items]
Revenues	43	71	90	60
GLB rider fees ceded to LNBAR
Segment Reporting Information [Line Items]
Revenues	(232)	(232)	(462)	(465)
Gains (losses) on other non-financial assets – sale of subsidiaries/businesses
Segment Reporting Information [Line Items]
Revenues	481	0	481	0
Annuities | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,141	1,097	2,319	2,140
Life Insurance | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,318	1,656	2,498	3,294
Group Protection (1) | Operating Segments
Segment Reporting Information [Line Items]
Revenues	(3,051)	1,400	(1,626)	2,787
Retirement Plan Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 323	$ 328	$ 640	$ 650