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)	$ (528)			$ 853			$ 1,588	$ 483
Other Operations
Segment Reporting Information [Line Items]
Net income (loss)	(84)			(102)			(276)	(293)
Net annuity product features, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(381)			1,322			1,319	1,076
Net life insurance product features, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(125)			108			(253)	(168)
Credit loss-related adjustments, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(88)			(27)			(124)	(53)
Investment gains (losses), pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(105)			(400)			(416)	(1,126)
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)	(446)			(29)			(51)	(27)
Gains (losses) on other non-financial assets – sale of subsidiaries/businesses, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(2)			0			582	0
Other items, pre-tax
Segment Reporting Information [Line Items]
Net income (loss)	(19)			(12)			(238)	(23)
Certain legal accruals
Segment Reporting Information [Line Items]
Net income (loss)			$ (114)	(12)
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)	(27)	(10)	(1)	(9)
Deferred compensation mark-to-market adjustment
Segment Reporting Information [Line Items]
Net income (loss)	(1)	$ 1	$ (13)	1	$ (8)	$ 12
Income tax benefit (expense) related to the above pre-tax items
Segment Reporting Information [Line Items]
Net income (loss)	246			(193)			(202)	76
Annuities | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	301			248			857	794
Life Insurance | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	22			(173)			(48)	(153)
Group Protection | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	109			68			318	247
Retirement Plan Services | Operating Segments
Segment Reporting Information [Line Items]
Net income (loss)	$ 44			$ 43			$ 120	$ 133