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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	$ 4,222	$ 4,781	$ 5,088	$ 4,674	$ 5,229	$ 5,238	$ 4,862	$ 4,533	$ 18,766	$ 19,862	$ 17,439
Annuities Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									4,776	5,001	4,455
Retirement Plan Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									1,274	1,323	1,213
Life Insurance Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									7,126	8,145	7,516
Group Protection Segment [Member]
Segment Reporting Information [Line Items]
Total revenues									5,304	4,995	4,793
Other Operations [Member]
Segment Reporting Information [Line Items]
Total revenues									158	181	185
Excluded Realized Gain (Loss), Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues									144	214	(721)
Amortization Of DFEL Associated With Benefit Ratio Unlocking, Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues									$ (16)	$ 3	$ (2)

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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