CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues
Interest revenue		$ 12,650	$ 13,314	$ 37,647	$ 45,042
Interest expense		2,252	2,821	6,884	11,977
Net interest revenue		10,398	10,493	30,763	33,065
Commissions and fees		3,399	2,753	10,443	8,707
Principal transactions		2,233	2,508	8,450	11,926
Administration and other fiduciary fees		1,007	892	2,990	2,565
Realized gains on sales of investments, net		117	304	655	1,484
Impairment losses on investments:
Impairment losses on investments and other assets		(30)	(30)	(112)	(154)
Provision for credit losses on AFS debt securities	[1]	(1)	4	(1)	(4)
Net impairment losses recognized in earnings		(31)	(26)	(113)	(158)
Other revenue		31	378	767	210
Total non-interest revenues		6,756	6,809	23,192	24,734
Total revenues, net of interest expense		17,154	17,302	53,955	57,799
Provisions for credit losses and for benefits and claims
Provision for credit losses on loans		(188)	1,931	(2,793)	16,298
Provision for credit losses on held-to-maturity (HTM) debt securities		(10)	(16)	(17)	21
Provision for credit losses on other assets		(3)	(13)	3	31
Policyholder benefits and claims		22	58	89	97
Provision for credit losses on unfunded lending commitments		(13)	424	(595)	1,094
Total provisions for credit losses and for benefits and claims	[2]	(192)	2,384	(3,313)	17,541
Operating expenses
Compensation and benefits		6,058	5,595	18,041	16,873
Premises and equipment		560	575	1,694	1,702
Technology/communication		1,997	1,891	5,744	5,355
Advertising and marketing		402	238	1,012	865
Other operating		2,467	2,665	7,258	7,272
Total operating expenses		11,484	10,964	33,749	32,067
Income (loss) from continuing operations before income taxes		5,862	3,954	23,519	8,191
Provision for income taxes		1,193	777	4,680	1,409
Income (loss) from continuing operations		4,669	3,177	18,839	6,782
Discontinued operations
Income (loss) from discontinued operations		(1)	(7)	7	(26)
Benefit for income taxes		0	0	0	0
Income (loss) from discontinued operations, net of taxes		(1)	(7)	7	(26)
Net income (loss) before attribution of noncontrolling interests		4,668	3,170	18,846	6,756
Noncontrolling interests		24	24	67	18
Citigroup’s net income		$ 4,644	$ 3,146	$ 18,779	$ 6,738
Basic earnings per share
Income from continuing operations (in dollars per share)	[3]	$ 2.17	$ 1.37	$ 8.70	$ 2.82
Income from discontinued operations, net of taxes (in dollars per share)	[3]	0	0	0	(0.01)
Net income (in dollars per share)	[3]	$ 2.17	$ 1.37	$ 8.70	$ 2.81
Weighted average common shares outstanding (in shares)		2,009.3	2,081.8	2,049.3	2,087.1
Diluted earnings per share
Income from continuing operations (in dollars per share)	[3]	$ 2.15	$ 1.36	$ 8.64	$ 2.81
Income (loss) from discontinued operations, net of taxes (in dollars per share)	[3]	0	0	0	(0.01)
Net income (in dollars per share)	[3]	$ 2.15	$ 1.36	$ 8.65	$ 2.80
Adjusted weighted average common shares outstanding (in shares)		2,026.2	2,094.3	2,065.3	2,100.1

[1] In accordance with ASC 326.

[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.