Other Fees and Commissions and Other Expenses (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Fees and Commissions and Other Expenses [Abstract]
Professional services	$ 2,091	$ 2,125	$ 2,040
Occupancy and equipment	2,168	2,033	2,018
Other	1,609	1,513	1,576
Total Other, net	$ 5,868	$ 5,671	$ 5,634