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Segment Information (Reconciliation Of Revenue From Segments To Consolidated) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Total revenues	$ 3,814	$ 4,720
Operating Segments [Member] | Annuities [Member]
Segment Reporting Information [Line Items]
Total revenues	1,141	1,147
Operating Segments [Member] | Retirement Plan Services [Member]
Segment Reporting Information [Line Items]
Total revenues	328	318
Operating Segments [Member] | Life Insurance [Member]
Segment Reporting Information [Line Items]
Total revenues	1,757	1,729
Operating Segments [Member] | Group Protection [Member]
Segment Reporting Information [Line Items]
Total revenues	1,388	1,303
Operating Segments [Member] | Other Operations [Member]
Segment Reporting Information [Line Items]
Total revenues	43	40
Investment and Reinsurance Related Realized gain (Loss) [Member]
Segment Reporting Information [Line Items]
Total revenues	(196)	1
Change in Fair Value of GLB and GDB Hedge Instruments [Member]
Segment Reporting Information [Line Items]
Total revenues	(476)	72
Index Product Net Derivative [Member]
Segment Reporting Information [Line Items]
Total revenues	$ (171)	$ 110

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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