CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$ 11,394	$ 6,536
Net income attributable to noncontrolling interests	177	191
Citigroup's net income	11,217	6,345
Income from discontinued operations, net of taxes	54	28
Gain (loss) on sale, net of taxes	35	(1)
Income from continuing operations-excluding noncontrolling interests	11,128	6,318
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations
Depreciation and amortization	2,451	2,264
Provision for credit losses	5,807	7,852
Realized gains from sales of investments	(764)	(2,813)
Net impairment losses recognized in earnings	462	4,903
Change in trading account assets	29,207	(23,467)
Change in trading account liabilities	6,499	3,908
Change in federal funds sold and securities borrowed or purchased under agreements to resell	(12,368)	(1,693)
Change in federal funds purchased and securities loaned or sold under agreements to repurchase	5,151	25,997
Change in brokerage receivables net of brokerage payables	(2,507)	(9,279)
Change in loans held-for-sale	2,621	2,192
Change in other assets	15,341	(35)
Change in other liabilities	(4,466)	(2,070)
Other, net	737	(6,513)
Total adjustments	48,171	1,246
Net cash provided by operating activities of continuing operations	59,299	7,564
Cash flows from investing activities of continuing operations
Change in deposits with banks	(70,525)	(14,244)
Change in loans	(17,133)	(13,555)
Proceeds from sales and securitizations of loans	7,589	4,874
Purchases of investments	(170,666)	(188,566)
Proceeds from sales of investments	109,405	114,234
Proceeds from maturities of investments	64,657	80,193
Capital expenditures on premises and equipment and capitalized software	(2,349)	(1,875)
Proceeds from sales of premises and equipment, subsidiaries and affiliates, and repossessed assets	455	876
Net cash used in investing activities of continuing operations	(78,567)	(18,063)
Cash flows from financing activities of continuing operations
Dividends paid	(214)	(104)
Issuance of preferred stock	2,775
Redemption of preferred stock	(94)
Treasury stock acquired	(619)	(4)
Stock tendered for payment of withholding taxes	(451)	(194)
Issuance of long-term debt	41,765	23,819
Payments and redemptions of long-term debt	(51,164)	(81,746)
Change in deposits	24,900	78,708
Change in short-term borrowings	159	(5,027)
Net cash (used in) provided by financing activities of continuing operations	17,057	15,452
Effect of exchange rate changes on cash and cash equivalents	(1,432)	148
Change in cash and due from banks	(3,643)	5,101
Cash and due from banks at beginning of year	36,453	28,701
Cash and due from banks at end of period	32,810	33,802
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes	3,253	2,582
Cash paid during the period for interest	10,519	15,185
Non-cash investing activities
Increase in corporate loans due to consolidation of a commercial paper conduit	6,718
Transfers to OREO and other repossessed assets	229	391
Non-cash financing activities
Increase in short-term borrowings due to consolidation of a commercial paper conduit	$ 6,718