CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Citigroup’s net income		$ 2,915	$ 4,547	$ 7,521	$ 8,853
Add: Citigroup’s other comprehensive income
Net change in unrealized gains and losses on debt securities, net of taxes	[1],[2]	126	(1,501)	962	(5,778)
Net change in debt valuation adjustment (DVA), net of taxes	[2],[3]	(619)	1,967	(944)	2,760
Net change in cash flow hedges, net of taxes	[2]	171	(666)	532	(2,207)
Benefit plans liability adjustment, net of taxes(4)	[2],[4]	(136)	(89)	(240)	82
Net change in CTA, net of taxes and hedges	[2]	23	(1,630)	864	(1,644)
Net change in excluded component of fair value hedges, net of taxes	[2]	17	9	(3)	57
Net change in long-duration insurance contracts, net of taxes	[2]	(6)	0	(1)	0
Citigroup’s total other comprehensive income (loss)	[2]	(424)	(1,910)	1,170	(6,730)
Total Citigroup comprehensive income (loss)		2,491	2,637	8,691	2,123
Add: Other comprehensive income (loss) attributable to noncontrolling interests		14	(53)	46	(82)
Add: Net income (loss) attributable to noncontrolling interests		36	21	81	38
Total comprehensive income		$ 2,541	$ 2,605	$ 8,818	$ 2,079

[1] See Note 12

[2] See Note 18.

[3] See Note 22.

[4] See Note 8.