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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	$ 853	$ (1,776)	$ 483	$ 545
After-tax impairment	467		1,100
Asset impairment charges, net of tax	369		862
Intent to sell impairments, fixed maturity AFS, unrealized gain position			164
Net Annuity Product Features, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	1,045	893	850	2,591
Net Life Insurance Product Features, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	85	20	(133)	16
Credit Loss-Related Adjustments, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(21)	(104)	(41)	(96)
Investment Gains (Losses), After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(306)	10	(880)	5
Changes In The Fair Value Of Reinsurance-Related Embedded Derivatives, Trading Securities And Certain Mortgage Loans, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(23)	(12)	(21)	(36)
Impairment Of Intangibles [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)		(634)		(634)
Transaction And Integration Costs Related To Mergers, Acquisitions And Divestitures, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)			(7)
Annuities [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	248	275	794	886
Retirement Plan Services [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	43	47	133	159
Life Insurance [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(173)	(2,171)	(153)	(2,085)
Group Protection [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	68	12	247	15
Other Operations [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	$ (113)	$ (112)	$ (306)	$ (276)