CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Net income before attribution of noncontrolling interests	$ 2,986		$ 3,403		$ 6,043		$ 6,474
Citigroup's other comprehensive income (loss)
Net change in unrealized gains and losses on investment securities, net of taxes	564		1,052		(210)		1,792
Net change in cash flow hedges, net of taxes	(89)		(69)		131		83
Net change in foreign currency translation adjustment, net of taxes and hedges	(1,596)		776		101		2,140
Pension liability adjustment, net of taxes	107	[1]	3	[1]	17	[1]	40	[1]
Citigroup's total other comprehensive income (loss)	(1,014)		1,762		39		4,055
Other comprehensive income (loss) attributable to noncontrolling interests
Net change in unrealized gains and losses on investment securities, net of taxes			5		9		3
Net change in foreign currency translation adjustment, net of taxes	(53)		19		2		50
Total other comprehensive income (loss) attributable to noncontrolling interests	(53)		24		11		53
Total comprehensive income before attribution of noncontrolling interests	1,919		5,189		6,093		10,582
Total comprehensive income (loss) attributable to noncontrolling interests	(13)		86		177		187
Citigroup's comprehensive income	$ 1,932		$ 5,103		$ 5,916		$ 10,395

[1] Primarily reflects adjustments based on the final year-end actuarial valuations of the Company's pension and postretirement plans and amortization of amounts previously recognized in other comprehensive income.