Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Non-interest revenues
Other		$ 1,360	$ 1,457	$ 1,678
Total non-interest revenues		32,675	30,427	29,659
Interest income
Interest on loans		9,941	8,148	7,214
Interest and dividends on investment securities		118	89	131
Deposits with banks and other		547	326	139
Total interest income		10,606	8,563	7,484
Interest expense
Deposits		1,287	779	598
Long-term debt and other		1,656	1,333	1,107
Total interest expense		2,943	2,112	1,705
Net interest income		7,663	6,451	5,779
Total revenues net of interest expense		40,338	36,878	35,438
Provisions for losses
Charge Card		937	795	696
Card member loans		2,266	1,868	1,235
Other		149	97	96
Total provisions for losses		3,352	2,760	2,027
Total revenues net of interest expense after provisions for losses		36,986	34,118	33,411
Expenses
Marketing and promotion		6,470	5,722	6,249
Card Member rewards		9,696	8,687	7,819
Card Member services and other		1,777	1,392	1,100
Salaries and employee benefits		5,250	5,258	5,259
Other,net		5,671	5,634	4,942
Total Expenses		28,864	26,693	25,369
Pretax income		8,122	7,425	8,042
Income tax provision		1,201	4,677	2,667
Net income		$ 6,921	$ 2,748	$ 5,375
Earnings per Common Share
Basic	[1]	$ 7.93	$ 3	$ 5.63
Diluted	[1]	$ 7.91	$ 2.99	$ 5.61
Average common shares outstanding for earnings per common share:
Basic		856	883	933
Diluted		859	886	935
Discount Revenue
Non-interest revenues
Revenues and Fees		$ 24,721	$ 22,890	$ 22,377
Net Card Fees
Non-interest revenues
Revenues and Fees		3,441	3,090	2,886
Other Fees and Commissions
Non-interest revenues
Revenues and Fees		$ 3,153	$ 2,990	$ 2,718

[1] Represents net income less (i) earnings allocated to participating share awards of $ 54 million, $ 21 million and $ 43 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and (ii) dividends on preferred shares of $ 80 millio n, $ 81 million and $ 80 million for the years ended December 31, 2018 , 2017 and 2016 , r e s p e c t i v e l y .