CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Revenues
Interest revenue		$ 16,332	$ 14,521
Interest expense		5,160	3,566
Net interest revenue		11,172	10,955
Commissions and fees		3,030	3,055
Principal transactions		3,289	3,094
Administration and other fiduciary fees		905	834
Realized gains on sales of investments, net		170	192
Impairment losses on investments
Gross impairment losses		(28)	(12)
Less: Impairments recognized in AOCI		0	0
Net impairment losses recognized in earnings		(28)	(12)
Other revenue		334	248
Total non-interest revenues		7,700	7,411
Total revenues, net of interest expense		18,872	18,366
Provisions for credit losses and for benefits and claims
Provision for loan losses		1,803	1,675
Policyholder benefits and claims		26	30
Release for unfunded lending commitments		28	(43)
Total provisions for credit losses and for benefits and claims		1,857	1,662
Operating expenses
Compensation and benefits		5,807	5,534
Premises and equipment		593	620
Technology/communication		1,758	1,663
Advertising and marketing		381	373
Other operating		2,386	2,533
Total operating expenses		10,925	10,723
Income from continuing operations before income taxes		6,090	5,981
Provision for income taxes		1,441	1,863
Income from continuing operations		4,649	4,118
Discontinued operations
Loss from discontinued operations		(7)	(28)
Benefit for income taxes		0	(10)
Loss from discontinued operations, net of taxes		(7)	(18)
Net income before attribution of noncontrolling interests		4,642	4,100
Noncontrolling interests		22	10
Citigroup’s net income		$ 4,620	$ 4,090
Basic earnings per share
Income from continuing operations (in dollars per share)	[1]	$ 1.68	$ 1.36
Income (loss) from discontinued operations, net of taxes (in dollars per share)	[1]	0.00	(0.01)
Net income (in dollars per share)	[1]	$ 1.68	$ 1.35
Weighted average common shares outstanding (in shares)		2,561.6	2,765.3
Diluted earnings per share
Income from continuing operations (in dollars per share)	[1]	$ 1.68	$ 1.36
Income (loss) from discontinued operations, net of taxes (in dollars per share)	[1]	0.00	(0.01)
Net income (in dollars per share)	[1]	$ 1.68	$ 1.35
Adjusted weighted average common shares outstanding (in shares)		2,563.0	2,765.5

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