Segment Information (Reconciliation Of Assets From Segments To Consolidated) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total assets	$ 335,437	$ 387,301
Annuities Segment [Member]
Segment Reporting Information [Line Items]
Total assets	167,206	201,732
Retirement Plan Services Segment [Member]
Segment Reporting Information [Line Items]
Total assets	41,886	47,625
Life Insurance Segment [Member]
Segment Reporting Information [Line Items]
Total assets	95,410	105,208
Group Protection Segment [Member]
Segment Reporting Information [Line Items]
Total assets	9,802	10,522
Other Operations [Member]
Segment Reporting Information [Line Items]
Total assets	$ 21,133	$ 22,214