Realized Gain (Loss) (Schedule Of Realized Gain (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Realized gain (loss) related to certain investments
Credit loss expense, net	$ (2)		$ (22)
Realized gain (loss) on equity securities	4	$ 2	(14)	$ 7
Credit loss expense on mortgage loans on real estate	(113)	(1)	(183)	(1)
Other gain (loss) on investments	(7)	(5)	(8)	(5)
Associated amortization of DAC, VOBA, DSI and DFEL and changes in other contract holder funds	18	(5)	43	(7)
Total realized gain (loss) related to certain financial assets	(142)	(11)	(228)	(31)
Realized gain (loss) on the mark-to-market on certain instruments	(6)	(37)	41	(158)
Indexed annuity and IUL contracts net derivatives results:
Gross gain (loss)	(1)	(41)	(50)	(76)
Associated amortization of DAC, VOBA, DSI, and DFEL		8	15	9
Variable annuity net derivatives results:
Gross gain (loss)	(521)	(43)	(481)	(259)
Associated amortization of DAC, VOBA, DSI, and DFEL	23	7	32	35
Total realized gain (loss)	(647)	(117)	(671)	(480)
Mortgage Loans On Real Estate [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on the mark-to-market on certain instruments	(2)		5
Fixed Maturity AFS Securities [Member]
Realized gain (loss) related to certain investments
AFS securities. Gross gains	22	20	28	32
AFS securities. Gross losses	(64)	(17)	(72)	(44)
AFS securities. Gross OTTI		(5)		(13)
Equity Securities [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on equity securities	$ 4	$ 2	$ (13)	$ 8