CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$ 8,116	$ 6,043
Net income attributable to noncontrolling interests	126	166
Citigroup's net income	7,990	5,877
Income (loss) from discontinued operations, net of taxes	(41)	20
Gain (loss) on sale, net of taxes	38	(1)
Income from continuing operations-excluding noncontrolling interests	7,993	5,858
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations
Depreciation and amortization	1,218	1,512
Provision for credit losses	4,052	5,382
Realized gains from sales of investments	(701)	(2,198)
Net impairment losses recognized in earnings	423	1,433
Change in trading account assets	14,359	(18,512)
Change in trading account liabilities	7,473	2,736
Change in federal funds sold and securities borrowed or purchased under agreements to resell	(1,894)	3,185
Change in federal funds purchased and securities loaned or sold under agreements to repurchase	7,016	16,478
Change in brokerage receivables net of brokerage payables	(6,302)	(9,785)
Change in loans held-for-sale	(3,383)	1,970
Change in other assets	15,744	3,219
Change in other liabilities	(4,887)	(2,802)
Other, net	3,939	(4,343)
Total adjustments	37,057	(1,725)
Net cash provided by operating activities of continuing operations	45,050	4,133
Cash flows from investing activities of continuing operations
Change in deposits with banks	(55,894)	730
Change in loans	(5,567)	(10,599)
Proceeds from sales and securitizations of loans	4,912	2,970
Purchases of investments	(122,776)	(126,454)
Proceeds from sales of investments	79,832	68,868
Proceeds from maturities of investments	45,479	51,952
Capital expenditures on premises and equipment and capitalized software	(1,475)	(1,774)
Proceeds from sales of premises and equipment, subsidiaries and affiliates, and repossessed assets	295	315
Net cash used in investing activities of continuing operations	(55,194)	(13,992)
Cash flows from financing activities of continuing operations
Dividends paid	(74)	(71)
Issuance of preferred stock	1,825
Redemption of preferred stock	(94)
Treasury stock acquired	(182)	(4)
Stock tendered for payment of withholding taxes	(448)	(191)
Issuance of long-term debt	18,994	18,925
Payments and redemptions of long-term debt	(28,646)	(56,424)
Change in deposits	7,867	48,372
Change in short-term borrowings	6,780	4,757
Net cash provided by financing activities of continuing operations	6,022	15,364
Effect of exchange rate changes on cash and cash equivalents	(1,186)	(279)
Change in cash and due from banks	(5,308)	5,226
Cash and due from banks at beginning of period	36,453	28,701
Cash and due from banks at end of period	31,145	33,927
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the year for income taxes	2,452	1,845
Cash paid during the year for interest	6,568	10,023
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	122	263
Non-cash financing activities
Increase in short-term borrowings due to consolidation of a commercial paper conduit	$ 6,718