CONSOLIDATED STATEMENT OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental disclosure of cash flow information
Interest paid during the period	$ 1,518	$ 2,921	$ 2,350
Net income taxes paid during the period	50	159	348
Supplemental disclosure of non-cash investing activities
Transfer of loans to held for sale, net	1,030	1,209	1,042
Fair value of properties added to real estate owned upon foreclosure	2	16	11
Supplemental disclosure of non-cash financing activities
Recharacterization of long-term debt to time deposits	$ 5,000	$ 0	$ 0