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Segment Information (Reconciliation Of Revenue From Segments To Consolidated) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 4,687	$ 4,534
Annuities Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	1,232	1,204
Retirement Plan Services Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	318	327
Life Insurance Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	1,825	1,939
Group Protection Segment [Member]
Segment Reporting Information [Line Items]
Total revenues	1,303	1,254
Other Operations [Member]
Segment Reporting Information [Line Items]
Total revenues	40	38
Excluded Realized Gain (Loss), Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues	(26)	(229)
Amortization Of DFEL Associated With Benefit Ratio Unlocking, Pre-Tax [Member]
Segment Reporting Information [Line Items]
Total revenues	$ (5)	$ 1

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- 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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