CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Citigroup’s net income		$ 14,845	$ 21,952	$ 11,047
Add: Citigroup’s other comprehensive income (loss)(1)
Net change in unrealized gains and losses on investment securities, net of taxes	[1]	(5,384)	(3,934)	3,585
Net change in debt valuation adjustment (DVA), net of taxes	[1]	2,029	232	(475)
Net change in cash flow hedges, net of taxes		(2,623)	(1,492)	1,470
Benefit plans liability adjustment, net of taxes	[2]	97	1,012	(55)
Net change in CTA, net of taxes and hedges		(2,471)	(2,525)	(250)
Net change in excluded component of fair value hedges, net of taxes		55	0	(15)
Citigroup’s total other comprehensive income (loss)		(8,297)	(6,707)	4,260
Citigroup’s total comprehensive income		6,548	15,245	15,307
Add: Other comprehensive income (loss) attributable to noncontrolling interests		(58)	(99)	26
Add: Net income attributable to noncontrolling interests		89	73	40
Total comprehensive income		$ 6,579	$ 15,219	$ 15,373

[1] See Note 1. (3)    See Note 25.

[2] See Note 8.