CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Revenues
Interest revenue		$ 13,151	$ 12,534
Interest expense		2,280	2,028
Net interest income		10,871	10,506
Commissions and fees		2,568	3,670
Principal transactions		4,590	3,913
Administration and other fiduciary fees		966	961
Realized gains on sales of investments, net		80	401
Impairment losses on investments:
Impairment losses on investments and other assets		(90)	(69)
Provision for credit losses on AFS debt securities	[1]	0	0
Net impairment losses recognized in earnings		(90)	(69)
Other revenue		201	285
Total non-interest revenues		8,315	9,161
Total revenues, net of interest expense		19,186	19,667
Provisions for credit losses and for benefits and claims
Provision for credit losses on loans		260	(1,479)
Provision for credit losses on held-to-maturity (HTM) debt securities		(2)	(11)
Provision for credit losses on other assets		(4)	9
Policyholder benefits and claims		27	52
Provision for credit losses on unfunded lending commitments		474	(626)
Total provisions for credit losses and for benefits and claims	[2]	755	(2,055)
Operating expenses
Compensation and benefits		6,820	6,001
Premises and equipment		543	576
Technology/communication		2,016	1,852
Advertising and marketing		311	270
Other operating		3,475	2,714
Total operating expenses		13,165	11,413
Income (loss) from continuing operations before income taxes		5,266	10,309
Provision for income taxes		941	2,332
Income (loss) from continuing operations		4,325	7,977
Discontinued operations
Income (loss) from discontinued operations		(2)	(2)
Benefit for income taxes		0	0
Income (loss) from discontinued operations, net of taxes		(2)	(2)
Net income (loss) before attribution of noncontrolling interests		4,323	7,975
Noncontrolling interests		17	33
Citigroup’s net income		$ 4,306	$ 7,942
Basic earnings per share
Income from continuing operations (in dollars per share)	[3]	$ 2.03	$ 3.64
Income from discontinued operations, net of taxes (in dollars per share)	[3]	0	0
Net income (in dollars per share)	[3]	$ 2.03	$ 3.64
Weighted average common shares outstanding (in shares)		1,971.7	2,082.0
Diluted earnings per share
Income from continuing operations (in dollars per share)	[3]	$ 2.02	$ 3.62
Income (loss) from discontinued operations, net of taxes (in dollars per share)	[3]	0	0
Net income (in dollars per share)	[3]	$ 2.02	$ 3.62
Adjusted weighted average common shares outstanding (in shares)		1,988.2	2,096.6

[1] In accordance with ASC 326, which requires the provision for credit losses on AFS securities to be included in revenue.

[2] This total excludes the provision for credit losses on AFS securities, which is disclosed separately above.

[3] Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.