Investments (Changes In Allowance For Credit Losses Of AFS) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance	$ 25	$ 12	$ 21	$ 19
Additions for securities for which credit losses were not previously recognized	1	3	21	5
Additions (reductions) for securities for which credit losses were previously recognized		3	(3)	7
Reductions for securities disposed			(1)	(1)
Reductions for securities charged-off	(5)		(17)	(12)
Balance	21	18	21	18
Accrued investment income on fixed maturity AFS securities			1,200	1,100
Corporate Bonds [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance	13	7	9	17
Additions for securities for which credit losses were not previously recognized	1		21	2
Additions (reductions) for securities for which credit losses were previously recognized			(3)	1
Reductions for securities disposed			(1)	(1)
Reductions for securities charged-off	(5)		(17)	(12)
Balance	9	7	9	7
RMBS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance	6	3	7	1
Additions for securities for which credit losses were not previously recognized		2		2
Additions (reductions) for securities for which credit losses were previously recognized			(1)	2
Balance	6	5	6	5
Other Securities [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Balance	6	2	5	1
Additions for securities for which credit losses were not previously recognized		1		1
Additions (reductions) for securities for which credit losses were previously recognized		3	1	4
Balance	$ 6	$ 6	$ 6	$ 6