CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$ 10,217	$ 9,412
Net income attributable to noncontrolling interests	106	119
Citigroup's net income	10,111	9,293
Income from discontinued operations, net of taxes	38	148
Gain (loss) on sale, net of taxes	74	(314)
Income from continuing operations-excluding noncontrolling interests	9,999	9,459
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	188	229
(Additions)/reductions to deferred policy acquisition costs	(33)	1,925
Depreciation and amortization	2,135	1,379
Provision for credit losses	9,184	20,475
Change in trading account assets	(3,365)	(4,225)
Change in trading account liabilities	19,797	4,493
Change in federal funds sold and securities borrowed or purchased under agreements to resell	(43,928)	(18,035)
Change in federal funds purchased and securities loaned or sold under agreements to repurchase	34,054	37,784
Change in brokerage receivables net of brokerage payables	(2,435)	(12,833)
Realized gains from sales of investments	(1,928)	(2,023)
Change in loans held-for-sale	(406)	(3,331)
Other, net	7,558	(11,016)
Total adjustments	20,821	14,822
Net cash provided by operating activities of continuing operations	30,820	24,281
Cash flows from investing activities of continuing operations
Change in deposits with banks	1,576	17,343
Change in loans	(6,389)	56,415
Proceeds from sales of loans	8,941	7,270
Purchases of investments	(254,411)	(334,368)
Proceeds from sales of investments	159,154	129,471
Proceeds from maturities of investments	112,409	153,669
Capital expenditures on premises and equipment and capitalized software	(2,447)	(805)
Proceeds from sales of premises and equipment, subsidiaries and affiliates, and repossessed assets	1,063	1,656
Net cash provided by investing activities of continuing operations	19,896	30,651
Cash flows from financing activities of continuing operations
Dividends paid	(69)
Conversion of ADIA Upper Decs equity units purchase contract to common stock	3,750	3,750
Treasury stock acquired	(1)	(5)
Stock tendered for payment of withholding taxes	(228)	(786)
Issuance of long-term debt	25,225	22,072
Payments and redemptions of long-term debt	(75,016)	(56,839)
Change in deposits	6,326	14,192
Change in short-term borrowings	(13,872)	(37,121)
Net cash used in financing activities of continuing operations	(53,885)	(54,737)
Effect of exchange rate changes on cash and cash equivalents	1,478	624
Discontinued operations
Net cash provided by discontinued operations	2,669	51
Change in cash and due from banks	978	870
Cash and due from banks at beginning of period	27,972	25,472
Cash and due from banks at end of period	28,950	26,342
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes	2,617	3,392
Cash paid during the period for interest	15,382	17,289
Non-cash investing activities
Transfers to OREO and other repossessed assets	1,038	2,058
Transfers to trading account assets from investments (held-to-maturity)	$ 12,700