CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Citigroup’s net income		$ 3,217	$ 2,915	$ 6,588	$ 7,521
Add: Citigroup’s other comprehensive income, net change, net of taxes
Unrealized gains and losses on debt securities	[1],[2]	(38)	126	62	962
Debt valuation adjustment (DVA)	[1],[3]	256	(619)	(307)	(944)
Cash flow hedges	[1]	285	171	777	532
Benefit plans liability adjustment	[1],[4]	179	(136)	256	(240)
CTA, net of hedges	[1]	(1,634)	23	(2,688)	864
Excluded component of fair value hedges	[1]	3	17	1	(3)
Long-duration insurance contracts	[1]	1	(6)	22	(1)
Citigroup’s total other comprehensive income (loss)	[1]	(948)	(424)	(1,877)	1,170
Citigroup’s total comprehensive income		2,269	2,491	4,711	8,691
Add: Other comprehensive income (loss) attributable to noncontrolling interests		(20)	14	(33)	46
Add: Net income (loss) attributable to noncontrolling interests		46	36	82	81
Total comprehensive income		$ 2,295	$ 2,541	$ 4,760	$ 8,818

[1] See Note 19.

[2] See Note 13

[3] See Note 23.

[4] See Note 8.