Segment Information (Reconciliation Of Revenue From Segments To Consolidated) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 5,104	$ 4,851	$ 9,791	$ 9,386
Annuities Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	1,169	1,249	2,401	2,453
Retirement Plan Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	315	333	633	660
Life Insurance Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	1,800	2,029	3,625	3,968
Group Protection Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	1,323	1,247	2,626	2,500
Other Operations [Member]
Segment Reporting Information [Line Items]
Total revenues	34	45	74	84
Excluded Realized Gain (Loss), Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues	473	(53)	447	(281)
Amortization Of DFEL Associated With Benefit Ratio Unlocking, Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues	$ (10)	$ 1	$ (15)	$ 2