Derivative Instruments (Schedule Of Offsetting Assets And Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Financial Assets
Derivative Instruments, Gross amount of recognized assets	$ 6,482	$ 7,938
Derivative Instruments, Gross amounts offset	(3,157)	(2,241)
Derivative Instruments, Net amount of assets	3,325	5,697
Derivative Instruments, Cash collateral	(3,325)	(5,564)
Derivative Instruments, Non-cash collateral		(133)
Derivative Instruments, Net amount
Embedded Derivative Instruments, Gross amount of recognized assets	2,718	2,547
Embedded Derivative Instruments, Net amount of assets	2,718	2,547
Embedded Derivative Instruments, Net amount	2,718	2,547
Securities Lending and Reverse Repurchase Agreements, Net amount	9
Total, Gross amount of recognized assets	9,200	10,485
Total, Gross amounts offset	(3,157)	(2,241)
Total, Net amount of assets	6,043	8,244
Total, Cash collateral	(3,325)	(5,564)
Total, Non-cash collateral		(133)
Total, Net amount	2,718	2,547
Derivative Liability, Fair Value of Collateral	94
Financial Liabilities
Derivative Instruments, Gross amount of recognized liabilities	294	349
Derivative Instruments, Gross amounts offset	(154)	(68)
Derivative Instruments, Net amount of liabilities	140	281
Derivative Instruments, Cash collateral	(140)	(44)
Derivative Instruments, Net amount		237
Embedded Derivative Instruments, Gross amount of recognized liabilities	4,669	8,724
Embedded Derivative Instruments, Net amount of liabilities	4,669	8,724
Embedded Derivative Instruments, Net amount	4,669	8,724
Total, Gross amount of recognized liabilities	4,963	9,073
Total, Gross amounts offset	(154)	(68)
Total, Net amount of liabilities	4,809	9,005
Total, Cash collateral	(140)	(44)
Total, Net amount	4,669	8,961
Other Assets [Member]
Financial Assets
Derivative Instruments, Net amount of assets		$ 260
Other Liabilities [Member]
Financial Assets
Total, Net amount of assets	$ 299