Derivative Instruments (Schedule Of Offsetting Assets And Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Financial Assets
Derivative Instruments, Gross amount of recognized assets	$ 5,469	$ 7,938
Derivative Instruments, Gross amounts offset	(2,379)	(2,241)
Derivative Instruments, Net amount of assets	3,090	5,697
Derivative Instruments, Cash collateral	(3,090)	(5,574)
Derivative Instruments, Non-cash collateral		(123)
Derivative Instruments, Net amount
Embedded Derivative Instruments, Gross amount of recognized assets	2,186	2,547
Embedded Derivative Instruments, Gross amounts offset
Embedded Derivative Instruments, Net amount of assets	2,186	2,547
Embedded Derivative Instruments, Cash collateral
Embedded Derivative Instruments, Non-cash collateral
Embedded Derivative Instruments, Net amount	2,186	2,547
Securities Lending and Reverse Repurchase Agreements, Cash collateral received	202	12
Excess Cash Collateral Pledged	71
Total, Gross amount of recognized assets	7,655	10,485
Total, Gross amounts offset	(2,379)	(2,241)
Total, Net amount of assets	5,276	8,244
Total, Cash collateral	(3,090)	(5,574)
Total, Non-cash collateral		(123)
Total, Net amount	2,186	2,547
Financial Liabilities
Derivative Instruments, Gross amount of recognized liabilities	250	777
Derivative Instruments, Gross amounts offset	(88)	(68)
Derivative Instruments, Net amount of liabilities	162	709
Derivative Instruments, Cash collateral	(162)	(709)
Derivative Instruments, Non-cash collateral
Derivative Instruments, Net amount
Embedded Derivative Instruments, Gross amount of recognized liabilities	3,502	6,519
Embedded Derivative Instruments, Gross amounts offset
Embedded Derivative Instruments, Net amount of liabilities	3,502	6,519
Embedded Derivative Instruments, Cash collateral
Embedded Derivative Instruments, Non-cash collateral
Embedded Derivative Instruments, Net amount	3,502	6,519
Total, Gross amount of recognized liabilities	3,752	7,296
Total, Gross amounts offset	(88)	(68)
Total, Net amount of liabilities	3,664	7,228
Total, Cash collateral	(162)	(709)
Total, Net amount	3,502	6,519
Other Assets [Member]
Financial Assets
Total, Net amount of assets	$ (279)	$ 260