CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$ 6,536	$ 10,217
Net income attributable to noncontrolling interests	191	106
Citigroup's net income	6,345	10,111
(Loss) income from discontinued operations, net of taxes	(36)	38
(Loss) gain on sale, net of taxes	(1)	74
Income from continuing operations-excluding noncontrolling interests	6,382	9,999
Adjustments to reconcile net income to net cash provided by (used in) operating activities of continuing operations
Amortization of deferred policy acquisition costs and present value of future profits	151	188
(Additions)/reductions to deferred policy acquisition costs	98	(33)
Depreciation and amortization	2,264	2,135
Provision for credit losses	7,852	9,184
Realized gains from sales of investments	(2,813)	(1,928)
Net impairment losses recognized in earnings	4,903	2,024
Change in trading account assets	(23,467)	(3,365)
Change in trading account liabilities	3,908	19,797
Change in federal funds sold and securities borrowed or purchased under agreements to resell	(1,693)	(43,928)
Change in federal funds purchased and securities loaned or sold under agreements to repurchase	25,997	34,054
Change in brokerage receivables net of brokerage payables	(9,279)	(2,435)
Change in loans held-for-sale	2,192	(406)
Change in other assets	(35)	(7,660)
Change in other liabilities	(2,070)	4,360
Other, net	(6,826)	8,834
Total adjustments	1,182	20,821
Net cash provided by operating activities of continuing operations	7,564	30,820
Cash flows from investing activities of continuing operations
Change in deposits with banks	(14,244)	1,576
Change in loans	(13,555)	(6,389)
Proceeds from sales and securitizations of loans	4,874	8,941
Purchases of investments	(188,566)	(254,411)
Proceeds from sales of investments	114,234	159,154
Proceeds from maturities of investments	80,193	112,409
Capital expenditures on premises and equipment and capitalized software	(1,875)	(2,447)
Proceeds from sales of premises and equipment, subsidiaries and affiliates, and repossessed assets	876	1,063
Net cash (used in) provided by investing activities of continuing operations	(18,063)	19,896
Cash flows from financing activities of continuing operations
Dividends paid	(104)	(69)
Issuance of ADIA Upper DECs equity units purchase contract		3,750
Treasury stock acquired	(4)	(1)
Stock tendered for payment of withholding taxes	(194)	(228)
Issuance of long-term debt	23,819	25,225
Payments and redemptions of long-term debt	(81,746)	(75,016)
Change in deposits	78,708	6,326
Change in short-term borrowings	(5,027)	(13,872)
Net cash provided by (used in) financing activities of continuing operations	15,452	(53,885)
Effect of exchange rate changes on cash and cash equivalents	148	1,478
Discontinued operations
Net cash provided by discontinued operations		2,669
Change in cash and due from banks	5,101	978
Cash and due from banks at beginning of period	28,701	27,972
Cash and due from banks at end of period	33,802	28,950
Supplemental disclosure of cash flow information for continuing operations
Cash paid (received) during the year for income taxes	2,582	2,617
Cash paid during the year for interest	15,185	15,382
Non-cash investing activities
Transfers to OREO and other repossessed assets	391	1,038
Transfers to trading account assets from investments (held-to-maturity)		$ 12,700