Segment Information - Reconciliation of Income (Loss) from Operations by Segment to Consolidated Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Net income (loss)	$ (600)			$ 315			$ 818	$ (1,569)
Other Operations
Segment Reporting Information [Line Items]
Net income (loss)	(38)			(66)			(152)	(191)
Net annuity product features, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(347)			1,203			1,066	1,536
Net life insurance product features, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(132)			248			(277)	390
Net life insurance product features, pre-tax | Fortitude Re
Segment Reporting Information [Line Items]
Net income (loss)				162				580
Credit loss-related adjustments, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(88)			(25)			(123)	(50)
Investment gains (losses), pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(57)			(1,091)			(317)	(4,228)
Changes in the fair value of reinsurance-related embedded derivatives, trading securities and certain mortgage loans, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(416)			190			(326)	251
GLB rider fees ceded to LNBAR, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(242)			(227)			(703)	(694)
Gains (losses) on other non-financial assets – sale of subsidiaries/businesses, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	0			0			481	0
Other items, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(19)			(10)			(113)	(23)
Certain legal accruals
Segment Reporting Information [Line Items]
Net income (loss)			$ (3)	(10)
Severance expense for workforce realignment
Segment Reporting Information [Line Items]
Net income (loss)	(16)	$ (7)	(49)		$ (3)	$ (3)
Transaction and integration costs for acquisitions or divestiture
Segment Reporting Information [Line Items]
Net income (loss)	(2)	$ (16)	(10)	(1)	(9)
Deferred compensation mark-to-market adjustment
Segment Reporting Information [Line Items]
Net income (loss)	(1)		$ (9)	1	$ (5)	$ 7
Income tax benefit (expense) related to the above pre-tax items
Segment Reporting Information [Line Items]
Net income (loss)	276			(51)			39	600
Annuities | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	227			190			702	626
Life Insurance | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	133			(152)			160	(152)
Group Protection | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	62			67			271	246
Retirement Plan Services | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	$ 41			$ 39			$ 110	$ 120