Service Fees and Other Revenue and Other Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Non Interest Income [Line Items]
Total Service fees and other revenue	$ 10,978	$ 8,934	$ 31,549	$ 24,593
Service fees and other revenue
Non Interest Income [Line Items]
Service fees	353	340	1,072	1,014
Foreign currency-related revenue	338	169	867	414
Delinquency fees	211	167	583	460
Travel commissions and fees	155	74	374	165
Other fees and revenues	112	89	444	129
Total Service fees and other revenue	$ 1,169	$ 839	$ 3,340	$ 2,182