Segment Information (Reconciliation Of Assets From Segments To Consolidated) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total assets	$ 324,683	$ 387,301
Annuities Segment [Member]
Segment Reporting Information [Line Items]
Total assets	161,456	201,732
Retirement Plan Services Segment [Member]
Segment Reporting Information [Line Items]
Total assets	40,858	47,625
Life Insurance Segment [Member]
Segment Reporting Information [Line Items]
Total assets	92,050	105,208
Group Protection Segment [Member]
Segment Reporting Information [Line Items]
Total assets	9,862	10,522
Other Operations [Member]
Segment Reporting Information [Line Items]
Total assets	$ 20,457	$ 22,214