CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Millions, unless otherwise specified		Total	Citigroup stockholders' equity	Preferred stock at aggregate liquidation value	Citigroup common stockholders' equity	Common stock and additional paid-in capital	Retained earnings	Treasury stock, at cost	Citigroup's accumulated other comprehensive income (loss)	Noncontrolling interests
Adjusted balance, beginning of year at Dec. 31, 2013							$ 110,822
Adjustment to opening balance, net of taxes at Dec. 31, 2013	[1]						(346)
Balance, beginning of year at Dec. 31, 2013				6,738		107,224	111,168	(1,658)	(19,133)	1,794
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				480
Employee benefit plans						326
Preferred stock issuance expense						(13)
Common dividends	[2]						(30)
Preferred dividends		(124)					(124)
Tax benefit							134
Employee benefit plans	[3]							(215)
Treasury stock acquired	[4]							(364)
Transactions between Citigroup and the noncontrolling-interest shareholders										(10)
Net income		3,989					3,943			45
Dividends paid to noncontrolling-interest shareholders										(3)
Other comprehensive income (loss)									(13)	(9)
Other						(1)				(37)
Net change in noncontrolling interests										(14)
Balance, end of year at Mar. 31, 2014		209,896	208,116	7,218	200,898	107,536	114,745	(2,237)	(19,146)	1,780
Adjusted balance, beginning of year at Dec. 31, 2014							117,852
Adjustment to opening balance, net of taxes at Dec. 31, 2014	[1]						0
Balance, beginning of year at Dec. 31, 2014		211,696		10,468		108,010	117,852	(2,929)	(23,216)	1,511
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				1,500
Employee benefit plans						176
Preferred stock issuance expense						(6)
Common dividends	[2]						(31)
Preferred dividends		(128)					(128)
Tax benefit							0
Employee benefit plans	[3]							(49)
Treasury stock acquired	[4]							(297)
Transactions between Citigroup and the noncontrolling-interest shareholders										(118)
Net income		4,812					4,770			42
Dividends paid to noncontrolling-interest shareholders										(3)
Other comprehensive income (loss)									(1,475)	(56)
Other						(25)				27
Net change in noncontrolling interests										(108)
Balance, end of year at Mar. 31, 2015		$ 216,023	$ 214,620	$ 11,968	$ 202,652	$ 108,155	$ 122,463	$ (3,275)	$ (24,691)	$ 1,403

[1] Citi adopted ASU 2014-01 Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Affordable Housing, in the first quarter of 2015 on a retrospective basis. This adjustment to opening Retained earnings represents the impact to periods prior to January 1, 2014 and is shown as an adjustment to the opening balance since the first quarter of 2014 is the earliest period disclosed in this Form 10-Q. See Note 1 to the Consolidated Financial Statements for additional information.

[2] Common dividends declared were $0.01 per share in the first quarters of 2015 and 2014.

[3] Includes treasury stock related to (i) certain activity on employee stock option program exercises where the employee delivers existing shares to cover the option exercise, or (ii) under Citi’s employee restricted or deferred stock programs where shares are withheld to satisfy tax requirements.

[4] For the three months ended March 31, 2015 and 2014, primarily consists of open market purchases under Citi’s Board of Directors-approved common stock repurchase program.