Realized Gain (Loss) (Schedule Of Realized Gain (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Realized gain (loss) related to certain investments
Credit loss benefit (expense)	$ (1)		$ (22)
Realized gain (loss) on equity securities	5	$ (17)	(9)	$ (10)
Credit loss benefit (expense) on mortgage loans on real estate	71	(1)	(112)	(2)
Other gain (loss) on investments	2	(4)	(6)	(9)
Associated amortization of DAC, VOBA, DSI and DFEL and changes in other contract holder funds	(8)	(5)	34	(12)
Total realized gain (loss) related to certain financial assets	65	(35)	(163)	(66)
Realized gain (loss) on the mark-to-market on certain instruments	(13)	22	27	(136)
Indexed annuity and IUL contracts net derivatives results:
Gross gain (loss)	47	(21)	(3)	(97)
Associated amortization of DAC, VOBA, DSI, and DFEL	(20)	(2)	(5)	7
Variable annuity net derivatives results:
Gross gain (loss)	704	28	223	(230)
Associated amortization of DAC, VOBA, DSI, and DFEL	(154)	(3)	(122)	31
Total realized gain (loss)	629	(11)	(43)	(491)
Mortgage Loans On Real Estate [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on the mark-to-market on certain instruments	3		8
Fixed Maturity AFS Securities [Member]
Realized gain (loss) related to certain investments
AFS securities. Gross gains	2	8	30	40
AFS securities. Gross losses	(6)	(14)	(78)	(58)
AFS securities. Gross OTTI		(2)		(15)
Equity Securities [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on equity securities	$ 5	$ (17)	$ (8)	$ (11)