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
Schedule of Investments [Line Items]
Balance as of beginning-of-year	$ 81	$ 169	$ 95	$ 203
Additions (reductions) from provision for credit loss expense	10	(39)	(4)	(73)
Balance as of end-of-year	91	130	91	130
Accrued investment income excluded from credit losses	50		50
Unfunded Loan Commitment [Member]
Schedule of Investments [Line Items]
Additions (reductions) from provision for credit loss expense		1	1	4
Commercial [Member]
Schedule of Investments [Line Items]
Balance as of beginning-of-year	72	155	78	186
Additions (reductions) from provision for credit loss expense	8	(41)	2	(72)
Balance as of end-of-year	80	114	80	114
Residential [Member]
Schedule of Investments [Line Items]
Balance as of beginning-of-year	9	14	17	17
Additions (reductions) from provision for credit loss expense	2	2	(6)	(1)
Balance as of end-of-year	$ 11	$ 16	$ 11	$ 16