CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$ 6,474	$ 7,185
Net income attributable to noncontrolling interests	134	60
Citigroup's net income	6,340	7,125
Income from discontinued operations, net of taxes	23	144
Gain on sale, net of taxes	88	64
Income from continuing operations-excluding noncontrolling interests	6,229	6,917
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations
Amortization of deferred policy acquisition costs and present value of future profits	131	168
(Additions)/reductions to deferred policy acquisition costs	(39)	1,966
Depreciation and amortization	1,391	1,243
Provision for credit losses	6,092	14,783
Change in trading account assets	(5,077)	23,461
Change in trading account liabilities	23,253	(6,511)
Change in federal funds sold and securities borrowed or purchased under agreements to resell	(37,259)	(8,762)
Change in federal funds purchased and securities loaned or sold under agreements to repurchase	14,285	41,831
Change in brokerage receivables net of brokerage payables	(3,986)	(9,310)
Realized gains from sales of investments	(1,163)	(1,061)
Change in loans held-for-sale	(2,555)	(1,694)
Other, net	3,543	(21,430)
Total adjustments	(1,384)	34,684
Net cash provided by operating activities of continuing operations	4,845	41,601
Cash flows from investing activities of continuing operations
Change in deposits with banks	6,256	6,634
Change in loans	(1,336)	55,314
Proceeds from sales and securitizations of loans	4,483	3,752
Purchases of investments	(171,093)	(200,847)
Proceeds from sales of investments	83,415	78,983
Proceeds from maturities of investments	87,315	95,806
Capital expenditures on premises and equipment and capitalized software	(1,530)	(528)
Proceeds from sales of premises and equipment, subsidiaries and affiliates, and repossessed assets	745	1,164
Net cash provided by investing activities of continuing operations	8,255	40,278
Cash flows from financing activities of continuing operations
Dividends paid	(42)
Issuance of common stock	0
Conversion of ADIA Upper Decs equity units purchase contract to common stock	1,875	1,875
Treasury stock acquired		(5)
Stock tendered for payment of withholding taxes	(223)	(724)
Issuance of long-term debt	21,256	13,153
Payments and redemptions of long-term debt	(54,304)	(41,765)
Change in deposits	21,355	(21,952)
Change in short-term borrowings	(6,801)	(33,227)
Net cash used in financing activities of continuing operations	(16,884)	(82,645)
Effect of exchange rate changes on cash and cash equivalents	909	(48)
Discontinued operations
Net cash provided by discontinued operations	2,669	51
Change in cash and due from banks	(206)	(763)
Cash and due from banks at beginning of period	27,972	25,472
Cash and due from banks at end of period	27,766	24,709
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes	1,916	2,769
Cash paid during the period for interest	10,121	12,101
Non-cash investing activities
Transfers to OREO and other repossessed assets	751	1,498
Transfers to trading account assets from investments (held-to-maturity)	$ 12,700