CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Revenues
Interest income		$ 36,223	$ 29,395
Interest expense		22,716	16,047
Net interest income		13,507	13,348
Commissions and fees		2,724	2,366
Principal transactions		3,274	3,939
Administration and other fiduciary fees		1,037	896
Realized gains on sales of investments, net		115	72
Impairment losses on investments:
Impairment losses on investments		(30)	(86)
(Provision) releases for credit losses on AFS debt securities	[1]	0	(1)
Net impairment losses recognized in earnings		(30)	(87)
Other revenue		477	913
Total non-interest revenues		7,597	8,099
Total revenues, net of interest expense		21,104	21,447
Provisions for credit losses and for benefits and claims
Provision for credit losses on loans		2,422	1,737
Provision (release) for credit losses on HTM debt securities		10	(17)
Provision for credit losses on other assets		4	425
Policyholder benefits and claims		27	24
Provision (release) for credit losses on unfunded lending commitments		(98)	(194)
Total provisions for credit losses and for benefits and claims	[2]	2,365	1,975
Operating expenses
Compensation and benefits		7,673	7,538
Premises and equipment		585	598
Technology/communication		2,246	2,127
Advertising and marketing		228	331
Restructuring		225	0
Other operating		3,238	2,695
Total operating expenses		14,195	13,289
Income from continuing operations before income taxes		4,544	6,183
Provision for income taxes		1,136	1,531
Income from continuing operations		3,408	4,652
Discontinued operations
Income (loss) from discontinued operations		(1)	(1)
Benefit for income taxes		0	0
Income (loss) from discontinued operations, net of taxes		(1)	(1)
Net income before attribution to noncontrolling interests		3,407	4,651
Noncontrolling interests		36	45
Citigroup’s net income		$ 3,371	$ 4,606
Basic earnings per share
Income from continuing operations (in dollars per share)	[3]	$ 1.60	$ 2.21
Income from discontinued operations, net of taxes (in dollars per share)	[3]	0	0
Net income (in dollars per share)	[3]	$ 1.59	$ 2.21
Weighted-average common shares outstanding (in shares)		1,910.4	1,943.5
Diluted earnings per share
Income from continuing operations (in dollars per share)	[3]	$ 1.58	$ 2.19
Income (loss) from discontinued operations, net of taxes (in dollars per share)	[3]	0	0
Net income (in dollars per share)	[3]	$ 1.58	$ 2.19
Adjusted weighted-average diluted common shares outstanding (in shares)		1,943.2	1,964.1

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

[2] This total excludes the provision for credit losses on AFS debt 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.