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, 2023				$ 17,600		$ 108,986	$ 198,905	$ (75,238)		$ (44,800)	$ 798
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				3,800
Redemption of preferred stock				(5,050)
Employee benefit plans						37		898	[1]
Excise tax on share repurchases	[2]							0
Other						(23)	(20)				0
Net income before attribution of noncontrolling interests		$ 9,943					9,826				117
Common dividends	[3]						(3,143)
Preferred dividends		(798)					(798)
Treasury stock acquired								(1,500)
Citigroup’s total other comprehensive income (loss)										(397)	7
Transactions between Citigroup and the noncontrolling interests											(9)
Distributions paid to noncontrolling interests											(94)
Net change in noncontrolling interests											21
Balance, end of period at Sep. 30, 2024		209,902	$ 209,083	16,350	$ 192,733	109,000	204,770	(75,840)		(45,197)	819
Balance, beginning of period at Jun. 30, 2024				18,100		108,816	202,913	(74,842)		(46,677)	834
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				1,500
Redemption of preferred stock				(3,250)
Employee benefit plans						174		2	[1]
Excise tax on share repurchases	[2]							0
Other						10	(15)				0
Net income before attribution of noncontrolling interests		3,273					3,238				35
Common dividends	[3]						(1,089)
Preferred dividends		(277)					(277)
Treasury stock acquired								(1,000)
Citigroup’s total other comprehensive income (loss)										1,480	40
Transactions between Citigroup and the noncontrolling interests											0
Distributions paid to noncontrolling interests											(90)
Net change in noncontrolling interests											(15)
Balance, end of period at Sep. 30, 2024		209,902	209,083	16,350	192,733	109,000	204,770	(75,840)		(45,197)	819
Balance, beginning of period at Dec. 31, 2024		209,366		17,850		109,148	206,294	(76,842)		(47,852)	768
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				4,700
Redemption of preferred stock				(3,500)
Employee benefit plans						(110)		736	[1]
Excise tax on share repurchases	[2]							(76)
Other						3	(12)				(5)
Net income before attribution of noncontrolling interests		11,930					11,835				95
Common dividends	[3]						(3,253)
Preferred dividends		(830)					(830)
Treasury stock acquired								(8,750)
Citigroup’s total other comprehensive income (loss)										3,682	112
Transactions between Citigroup and the noncontrolling interests											(10)
Distributions paid to noncontrolling interests											(106)
Net change in noncontrolling interests											86
Balance, end of period at Sep. 30, 2025		213,877	213,023	19,050	193,973	109,041	214,034	(84,932)		(44,170)	854
Balance, beginning of period at Jun. 30, 2025				16,350		108,870	211,674	(79,886)		(43,786)	908
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				2,700
Redemption of preferred stock				0
Employee benefit plans						175		4	[1]
Excise tax on share repurchases	[2]							(50)
Other						(4)	0				(5)
Net income before attribution of noncontrolling interests		3,790					3,752				38
Common dividends	[3]						(1,118)
Preferred dividends		(274)					(274)
Treasury stock acquired								(5,000)
Citigroup’s total other comprehensive income (loss)										(384)	5
Transactions between Citigroup and the noncontrolling interests											0
Distributions paid to noncontrolling interests											(92)
Net change in noncontrolling interests											(54)
Balance, end of period at Sep. 30, 2025		$ 213,877	$ 213,023	$ 19,050	$ 193,973	$ 109,041	$ 214,034	$ (84,932)		$ (44,170)	$ 854

[1] Includes treasury stock related to certain activity under Citi’s employee restricted or deferred stock programs where shares are withheld to satisfy employees’ tax requirements.

[2] The 1% excise tax on the fair market value of common stock repurchased in the taxable year, reduced by the fair market value of any common stock issued during the same year.

[3] Common dividends declared were $0.60 per share for 3Q25, $0.56 per share for both 1Q25 and 2Q25, $0.56 per share for 3Q24 and $0.53 per share for both 1Q24 and 2Q24.