Segment Information (Reconciliation Of Income (Loss) From Operations By Segment To Consolidated Net Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	$ 511	$ 840	$ (370)	$ 2,321
After-tax impairment	493		493
Intent to sell impairments, fixed maturity AFS, unrealized gain position			374
MRB Related Impacts, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	1,585	(399)	1,079	664
Investment and Reinsurance Related Realized Gain (Loss), After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(662)	(20)	(816)	(19)
Change in Fair Value of GLB and GDB Hedge Instruments, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(708)	868	(1,084)	926
Index Product Net Derivative, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	(53)	23	(188)	109
Benefit Ratio Unlocking, After-Tax [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	2	(6)	4	(6)
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)		(7)
Annuities [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	271	294	545	612
Retirement Plan Services [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	47	55	90	113
Life Insurance [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	33	63	20	87
Group Protection [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	109	49	180	3
Other Operations [Member] | Operating Segments [Member]
Reconciliation of Net Income (Loss) from Segments to Consolidated [Abstract]
Net income (loss)	$ (106)	$ (87)	$ (193)	$ (168)