CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income before attribution of noncontrolling interests	$ 3,278		$ 493		$ 11,394		$ 6,536
Citigroup's other comprehensive income (loss)
Net change in unrealized gains and losses on investment securities, net of taxes	(66)		776		(1,953)		566
Net change in cash flow hedges, net of taxes	330		186		952		317
Net change in benefit plans, net of taxes	298	[1]	(24)	[1]	953	[1]	(7)	[1]
Net change in foreign currency translation adjustment, net of taxes and hedges	564		1,245		(1,854)		1,346
Citigroup's total other comprehensive income (loss)	1,126		2,183		(1,902)		2,222
Other comprehensive income (loss) attributable to noncontrolling interests
Net change in unrealized gains and losses on investment securities, net of taxes	(3)		9		(29)		18
Net change in foreign currency translation adjustment, net of taxes	34		39		(15)		41
Total other comprehensive income (loss) attributable to noncontrolling interests	31		48		(44)		59
Total comprehensive income before attribution of noncontrolling interests	4,435		2,724		9,448		8,817
Total comprehensive income attributable to noncontrolling interests	82		73		133		250
Citigroup's comprehensive income	$ 4,353		$ 2,651		$ 9,315		$ 8,567

[1] Primarily reflects adjustments based on the periodic actuarial valuations of the Company's benefit plans and amortization of amounts previously recognized in Other comprehensive income.