Segment Information (Reconciliation Of Revenue From Segments To Consolidated) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 4,299	$ 4,357	$ 4,433	$ 4,681	$ 5,187	$ 4,907	$ 4,446	$ 4,688	$ 17,770	$ 19,228	$ 16,566
Excluded Realized Gain (Loss), Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues									8	504	(742)
Amortization of DFEL associated with benefit ratio unlocking, pre-tax [Member]
Segment Reporting Information [Line Items]
Total revenues									2
Life Insurance Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									6,694	7,700	7,086
Annuities Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									4,372	4,565	4,067
Group Protection Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									5,303	4,994	4,792
Retirement Plan Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									1,258	1,307	1,197
Other Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									$ 133	$ 158	$ 166