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
Balance, beginning of year at Dec. 31, 2012				$ 2,562		$ 106,421		$ (847)	$ (16,896)	$ 1,948
Increase (Decrease) in Stockholders' Equity
Net Income including portion attributable to noncontrolling interest		8,116					7,990			126
Net change in Accumulated other comprehensive income (loss)									(3,028)	(75)
Issuance of new preferred stock				1,825
Redemption of preferred stock				(94)
Employee benefit plans						510
Preferred stock issuance expense						0
Common dividends	[1]						(61)
Preferred dividends		(13)					(13)
Employee benefit plans	[2]							(46)
Treasury stock acquired	[3]							(182)
Initial origination of a noncontrolling interest										5
Transactions between noncontrolling-interest shareholders and the related consolidated subsidiary										(2)
Transactions between Citigroup and the noncontrolling-interest shareholders										25
Dividends paid to noncontrolling-interest shareholders										(4)
Other						(24)	0			(123)
Net change in noncontrolling interests										(48)
Balance, end of period at Jun. 30, 2013		197,826	195,926	4,293	191,633	106,907	105,725	(1,075)	(19,924)	1,900
Balance, beginning of year at Mar. 31, 2013
Increase (Decrease) in Stockholders' Equity
Net Income including portion attributable to noncontrolling interest		4,218
Net change in Accumulated other comprehensive income (loss)									(2,865)
Preferred dividends	[4]	(9)
Balance, end of period at Jun. 30, 2013		197,826	195,926		191,633				(19,924)
Balance, beginning of year at Dec. 31, 2013		206,133		6,738		107,224		(1,658)	(19,133)	1,794
Increase (Decrease) in Stockholders' Equity
Net Income including portion attributable to noncontrolling interest		4,219					4,124			95
Net change in Accumulated other comprehensive income (loss)									986	(2)
Issuance of new preferred stock				2,230
Redemption of preferred stock				0
Employee benefit plans						492
Preferred stock issuance expense						(24)
Common dividends	[1]						(60)
Preferred dividends		(224)					(224)
Employee benefit plans	[2]							(196)
Treasury stock acquired	[3]							(666)
Initial origination of a noncontrolling interest										0
Transactions between noncontrolling-interest shareholders and the related consolidated subsidiary										0
Transactions between Citigroup and the noncontrolling-interest shareholders										(68)
Dividends paid to noncontrolling-interest shareholders										(17)
Other						8	353			(65)
Net change in noncontrolling interests										(57)
Balance, end of period at Jun. 30, 2014		213,099	211,362	8,968	202,394	107,700	115,361	(2,520)	(18,147)	1,737
Balance, beginning of year at Mar. 31, 2014
Increase (Decrease) in Stockholders' Equity
Net Income including portion attributable to noncontrolling interest		231
Net change in Accumulated other comprehensive income (loss)									999
Preferred dividends	[4]	(100)
Balance, end of period at Jun. 30, 2014		$ 213,099	$ 211,362		$ 202,394				$ (18,147)

[1] Common dividends declared were $0.01 per share in the first and second quarter of 2014 and 2013.

[2] 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.

[3] For the six months ended June 30, 2014, primarily consists of open market purchases under Citi’s Board of Directors-approved common stock repurchase program.

[4] See Note 19 to the Consolidated Financial Statements for the potential future impact of preferred stock dividends.