CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions		Total	Citigroup stockholders' equity	Preferred stock at aggregate liquidation value	Total Citigroup common stockholders’ equity	Common stock and additional paid-in capital (APIC)	Retained earnings	Treasury stock, at cost		Citigroup's accumulated other comprehensive income (loss)	Noncontrolling interests
Balance, beginning of period at Dec. 31, 2020				$ 19,480		$ 107,877	$ 168,272	$ (64,129)		$ (32,058)	$ 758
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				2,300
Redemption of preferred stock				(1,500)
Employee benefit plans						(175)		468	[1]
Other (primarily reclassifications from APIC for preferred issuance costs on redemptions)							(32)				(9)
Net income before attribution of noncontrolling interests		$ 7,975					7,942				33
Common dividends	[2]						(1,074)
Preferred dividends		(292)					(292)
Treasury stock acquired	[3]							(1,600)
Citigroup’s total other comprehensive income										(2,953)	(58)
Net change in noncontrolling interests											(34)
Balance, end of period at Mar. 31, 2021		203,273	$ 202,549	20,280	$ 182,269	107,725	174,816	(65,261)		(35,011)	724
Balance, beginning of period at Dec. 31, 2021		202,672		18,995		108,034	184,948	(71,240)		(38,765)	700
Increase (Decrease) in Stockholders' Equity
Employee benefit plans						46		496	[1]
Preferred stock issuance costs (new issuances, net of reclassifications to retained earnings for redemptions)						23
Other (primarily reclassifications from APIC for preferred issuance costs on redemptions)						1	1				(11)
Net income before attribution of noncontrolling interests		4,323					4,306				17
Common dividends	[2]						(1,014)
Preferred dividends		(279)					(279)
Treasury stock acquired	[3]							(3,000)
Transactions between Citigroup and the noncontrolling-interest shareholders											(33)
Citigroup’s total other comprehensive income										(4,820)	(29)
Net change in noncontrolling interests											(56)
Balance, end of period at Mar. 31, 2022		$ 198,353	$ 197,709	$ 18,995	$ 178,714	$ 108,081	$ 187,962	$ (73,744)		$ (43,585)	$ 644

[1] 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.

[2] Common dividends declared were $0.51 per share for each of the first quarters of 2022 and 2021.

[3] Primarily consists of open market purchases under Citi’s Board of Directors-approved common share repurchase program.