Other Fees and Commissions and Other Expenses (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Fees and Commissions and Other Expenses [Abstract]
Data processing and equipment	$ 2,431	$ 2,334	$ 2,168
Professional services	1,958	1,789	2,091
Net unrealized and realized gains on Amex Ventures equity investments	(767)	(152)	(77)
Other	1,195	1,354	1,674
Total Other expenses	$ 4,817	$ 5,325	$ 5,856