Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Non-interest revenues
Total non-interest revenues		$ 47,381	$ 42,967	$ 34,630
Interest income
Interest on loans		17,697	11,967	8,850
Interest and dividends on investment securities		128	96	83
Deposits with banks and other		2,158	595	100
Total interest income		19,983	12,658	9,033
Interest expense
Deposits		4,865	1,527	458
Long-term debt and other		1,984	1,236	825
Total interest expense		6,849	2,763	1,283
Net interest income		13,134	9,895	7,750
Total revenues net of interest expense		60,515	52,862	42,380
Provisions for credit losses
Provisions for credit losses		4,923	2,182	(1,419)
Total revenues net of interest expense after provisions for credit losses		55,592	50,680	43,799
Expenses
Card Member rewards		15,367	14,002	11,007
Business development		5,657	4,943	3,762
Card Member services		3,968	2,959	1,993
Marketing		5,213	5,458	5,291
Salaries and employee benefits		8,067	7,252	6,240
Other, net		6,807	6,481	4,817
Total expenses		45,079	41,095	33,110
Pretax income		10,513	9,585	10,689
Income tax provision		2,139	2,071	2,629
Net income		$ 8,374	$ 7,514	$ 8,060
Earnings per Common Share
Basic (in dollars per share)	[1]	$ 11.23	$ 9.86	$ 10.04
Diluted (in dollars per share)	[1]	$ 11.21	$ 9.85	$ 10.02
Average common shares outstanding for earnings per common share:
Basic (in shares)		735	751	789
Diluted (in shares)		736	752	790
Card Member receivables
Provisions for credit losses
Provisions for credit losses		$ 880	$ 627	$ (73)
Card Member loans
Provisions for credit losses
Provisions for credit losses		3,839	1,514	(1,155)
Other
Provisions for credit losses
Provisions for credit losses		204	41	(191)
Discount revenue
Non-interest revenues
Total non-interest revenues		33,416	30,739	24,563
Net card fees
Non-interest revenues
Total non-interest revenues		7,255	6,070	5,195
Service fees and other revenue
Non-interest revenues
Total non-interest revenues		5,005	4,521	3,316
Processed revenue
Non-interest revenues
Total non-interest revenues		$ 1,705	$ 1,637	$ 1,556

[1] Represents net income less (i) earnings allocated to participating share awards of $64 million, $57 million and $56 million for the years ended December 31, 2023, 2022 and 2021, respectively, (ii) dividends on preferred shares of $58 million, $57 million and $71 million for the years ended December 31, 2023, 2022 and 2021, respectively, and (iii) equity-related adjustments of $16 million related to the redemption of preferred shares for the year ended December 31, 2021.