Realized Gain (Loss) (Schedule Of Realized Gain (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Realized gain (loss) related to certain investments
Credit loss expense, net	$ (20)
Gain (loss) on equity securities	(19)	$ 6
Credit loss expense on mortgage loans on real estate	(70)
Other gain (loss) on investments	(1)	(1)
Associated amortization of DAC, VOBA, DSI and DFEL and changes in other contract holder funds	26	(2)
Total realized gain (loss) related to certain financial assets	(86)	(20)
Realized gain (loss) on the mark-to-market on certain instruments	47	(121)
Indexed annuity and IUL contracts net derivatives results:
Gross gain (loss)	(49)	(35)
Associated amortization of DAC, VOBA, DSI, and DFEL	15	1
Variable annuity net derivatives results:
Gross gain (loss)	40	(215)
Associated amortization of DAC, VOBA, DSI, and DFEL	9	28
Total realized gain (loss)	(24)	(362)
Mortgage Loans On Real Estate [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on the mark-to-market on certain instruments	7
Fixed Maturity AFS Securities [Member]
Realized gain (loss) related to certain investments
AFS securities. Gross gains	6	12
AFS securities. Gross losses	(8)	(27)
AFS securities. Gross OTTI		(8)
Equity Securities [Member]
Realized gain (loss) related to certain investments
Gain (loss) on equity securities	$ (18)	$ 6