Reinsurance (Reinsurance Amounts Recorded on Consolidated Statements of Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reinsurance [Abstract]
Direct insurance premiums and fee income	$ 13,941	$ 14,154	$ 13,304
Reinsurance assumed	98	94	95
Reinsurance ceded	(1,898)	(1,744)	(1,656)
Total insurance premiums and fee income	12,141	12,504	11,743
Direct insurance benefits	15,065	10,714	10,630
Reinsurance recoveries	(2,519)	(2,185)	(1,953)
Benefits	$ 12,546	$ 8,529	$ 8,677