Other Fees and Commissions and Other Expenses (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Fees and Commissions and Other Expenses [Abstract]
Occupancy and equipment	$ 517	$ 484	$ 1,025	$ 1,004
Professional services	512	508	1,006	965
Other	374	321	973	778
Total other, net	$ 1,403	$ 1,313	$ 3,004	$ 2,747