Investments (Changes In Allowance For Credit Losses Of AFS) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance as of beginning-of-period	$ 13
Additions for securities for which credit losses were not previously recognized	9	$ 42
Additions (reductions) for securities for which credit losses were previously recognized	5	(2)
Reductions for securities disposed	(2)	(15)
Reductions for securities charged-off	(6)	(12)
Balance as of end-of-period	19	13
Accrued interest receivable on fixed maturity AFS securities	944	1,000
Corporate Bonds [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance as of beginning-of-period	12
Additions for securities for which credit losses were not previously recognized	8	40
Additions (reductions) for securities for which credit losses were previously recognized	5	(1)
Reductions for securities disposed	(2)	(15)
Reductions for securities charged-off	(6)	(12)
Balance as of end-of-period	17	12
RMBS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance as of beginning-of-period	1
Additions for securities for which credit losses were not previously recognized		1
Balance as of end-of-period	1	1
ABS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance as of beginning-of-period
Additions for securities for which credit losses were not previously recognized	1	1
Additions (reductions) for securities for which credit losses were previously recognized		(1)
Balance as of end-of-period	$ 1