Segment Information - Reconciliation of Income (Loss) from Operations by Segment to Consolidated Net Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net income (loss)	$ (752)	$ 1,358	$ 3,778
Other Operations
Segment Reporting Information [Line Items]
Net income (loss)	(411)	(486)	(371)
Net annuity product features
Segment Reporting Information [Line Items]
Net income (loss)	52	3,266	1,600
Net life insurance product features
Segment Reporting Information [Line Items]
Net income (loss)	(310)	21	(1)
Credit loss-related adjustments
Segment Reporting Information [Line Items]
Net income (loss)	(63)	(103)	87
Investment gains (losses)
Segment Reporting Information [Line Items]
Net income (loss)	(744)	16	519
Changes in the fair value of reinsurance-related embedded derivatives, trading securities and certain mortgage loans
Segment Reporting Information [Line Items]
Net income (loss)	(633)	(41)	53
Impairment of intangibles
Segment Reporting Information [Line Items]
Net income (loss)	0	(634)	0
Transaction and integration costs related to mergers, acquisitions, and divestures
Segment Reporting Information [Line Items]
Net income (loss)	(27)	0	(11)
Gain (loss) on modification or early extinguishment of debt
Segment Reporting Information [Line Items]
Net income (loss)	0	0	(6)
Annuities | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	1,073	1,161	1,337
Life Insurance | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	(159)	(2,094)	487
Group Protection | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	299	41	(164)
Retirement Plan Services | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	$ 171	$ 211	$ 248