Liability For Unpaid Claims (Changes In Liability For Unpaid Claims) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Liability For Unpaid Claims [Abstract]
Balance as of beginning-of-year	$ 6,280	$ 5,934
Reinsurance recoverable	147	151
Net balance as of beginning-of-year	6,133	5,783
Incurred related to:
Current year	2,972	2,999
Interest	123	112
All other incurred	(206)	(284)
Total incurred	2,889	2,827
Paid related to:
Current year	(1,362)	(1,393)
Prior years	(1,363)	(1,222)
Total paid	(2,725)	(2,615)
Net balance as of end-of-period	6,297	5,995
Reinsurance recoverable	144	145
Balance as of end-of-period	$ 6,441	$ 6,140