CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenues
Interest revenue		$ 29,395	$ 13,151
Interest expense		16,047	2,280
Net interest income		13,348	10,871
Commissions and fees		2,366	2,568
Principal transactions		3,939	4,590
Administration and other fiduciary fees		896	966
Realized gains on sales of investments, net		72	80
Impairment losses on investments:
Impairment losses on investments and other assets		(86)	(90)
Provision (releases) for credit losses on AFS debt securities	[1]	(1)	0
Net impairment losses recognized in earnings		(87)	(90)
Other revenue		913	201
Total non-interest revenues		8,099	8,315
Total revenues, net of interest expense		21,447	19,186
Provisions for credit losses and for benefits and claims
Provision for credit losses on loans		1,737	260
Provision for credit losses on HTM debt securities		(17)	(2)
Provision for credit losses on other assets		425	(4)
Policyholder benefits and claims		24	27
Provision for credit losses on unfunded lending commitments		(194)	474
Total provisions for credit losses and for benefits and claims	[2],[3]	1,975	755
Operating expenses
Compensation and benefits		7,538	6,820
Premises and equipment		598	543
Technology/communication		2,127	2,016
Advertising and marketing		331	311
Other operating		2,695	3,475
Total operating expenses		13,289	13,165
Income from continuing operations before income taxes		6,183	5,266
Provision for income taxes		1,531	941
Income from continuing operations		4,652	4,325
Discontinued operations
Income (loss) from discontinued operations		(1)	(2)
Benefit for income taxes		0	0
Income (loss) from discontinued operations, net of taxes		(1)	(2)
Net income before attribution to noncontrolling interests		4,651	4,323
Noncontrolling interests		45	17
Citigroup’s net income		$ 4,606	$ 4,306
Basic earnings per share
Income from continuing operations (in dollars per share)	[4]	$ 2.21	$ 2.03
Income from discontinued operations, net of taxes (in dollars per share)	[4]	0	0
Net income (in dollars per share)	[4]	$ 2.21	$ 2.03
Weighted average common shares outstanding (in shares)		1,943.5	1,971.7
Diluted earnings per share
Income from continuing operations (in dollars per share)	[4]	$ 2.19	$ 2.02
Income (loss) from discontinued operations, net of taxes (in dollars per share)	[4]	0	0
Net income (in dollars per share)	[4]	$ 2.19	$ 2.02
Adjusted weighted average diluted common shares outstanding (in shares)		1,964.1	1,988.2

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

[2] 2022 amounts have been revised to conform to the current-period presentation.

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

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