Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Non-interest revenues
Non-interest revenues		$ 7,980	$ 8,305
Interest income
Interest on loans		2,909	2,725
Interest and dividends on investment securities		38	33
Deposits with banks and other		99	196
Total interest income		3,046	2,954
Interest expense
Deposits		326	399
Long-term debt and other		390	496
Total interest expense		716	895
Net interest income		2,330	2,059
Total revenues net of interest expense		10,310	10,364
Provisions for credit losses
Card Member receivables		597	253
Card Member loans		1,876	525
Other		148	31
Total provisions for credit losses		2,621	809
Total revenues net of interest expense after provisions for credit losses		7,689	9,555
Expenses
Marketing and business development		1,705	1,575
Card Member rewards		2,392	2,451
Card Member services		456	550
Salaries and employee benefits		1,395	1,422
Other, net		1,289	1,599
Total expenses		7,237	7,597
Pretax income		452	1,958
Income tax provision		85	408
Net income		$ 367	$ 1,550
Earnings per Common Share
Basic (in dollars per share)	[1]	$ 0.41	$ 1.81
Diluted (in dollars per share)	[1]	$ 0.41	$ 1.80
Average common shares outstanding for earnings per common share:
Basic (in shares)		807	841
Diluted (in shares)		808	843
Discount revenue [Member]
Non-interest revenues
Non-interest revenues		$ 5,838	$ 6,195
Net card fees [Member]
Non-interest revenues
Non-interest revenues		1,110	944
Other fees and commissions [Member]
Non-interest revenues
Non-interest revenues		720	803
Other [Member]
Non-interest revenues
Non-interest revenues		$ 312	$ 363

[1] Represents net income less (i) earnings allocated to participating share awards of $2 million and $11 million for the three months ended March 31, 2020 and 2019, respectively, and (ii) dividends on preferred shares of $32 million and $21 million for the three months ended March 31, 2020 and 2019, respectively.