Reinsurance (Earned Life Insurance Premiums On Ceded Business) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Direct premiums earned	$ 7,050	$ 6,370	$ 5,985
Ceded earned premiums	(392)	(331)	(290)
Insurance losses and contract holders' benefits	5,012	3,936	4,134
Life Insurance Segment
Direct premiums earned	373	374	362
Ceded earned premiums	(78)	(76)	(73)
Net earned premiums	295	298	289
Direct contract holders' benefits incurred	386	423	359
Ceded contract holders' benefits incurred	(90)	(83)	(62)
Insurance losses and contract holders' benefits	$ 296	$ 340	$ 297