Investments (Changes In Allowance For Credit Losses On Mortgage Loans On Real Estate) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance	$ 81	$ 170	$ 96	$ 204
Additions (reductions) from provision for credit loss expense	10	(39)	(5)	(73)
Balance	91	131	91	131
Accrued interest receivable excluded from credit losses		50		50
Unfunded Loan Commitment [Member]
Financing Receivable, Credit Loss, Expense (Reversal)	1		(1)	4
Commercial [Member]
Balance	72	156	79	187
Additions (reductions) from provision for credit loss expense	8	(41)	1	(72)
Balance	80	115	80	115
Residential [Member]
Balance	9	14	17	17
Additions (reductions) from provision for credit loss expense	2	2	(6)	(1)
Balance	$ 11	$ 16	$ 11	$ 16