CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$ 4,735	$ 4,642
Net income attributable to noncontrolling interests	25	22
Citigroup’s net income	4,710	4,620
Loss from discontinued operations, net of taxes	(2)	(7)
Income from continuing operations—excluding noncontrolling interests	4,712	4,627
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations
Depreciation and amortization	931	926
Provision for loan losses	1,944	1,803
Realized gains from sales of investments	(130)	(170)
Net impairment losses on investments, goodwill and intangible assets	8	28
Change in trading account assets	(30,427)	(16,054)
Change in trading account liabilities	(7,913)	18,791
Change in brokerage receivables net of brokerage payables	(10,965)	155
Change in loans HFS	1,439	1,627
Change in other assets	(2,961)	(3,503)
Change in other liabilities	2,585	1,561
Other, net	3,161	(2,835)
Total adjustments	(42,328)	2,329
Net cash provided by (used in) operating activities of continuing operations	(37,616)	6,956
Cash flows from investing activities of continuing operations
Change in federal funds sold and securities borrowed and purchased under agreements to resell	6,189	(25,409)
Change in loans	(892)	(8,717)
Proceeds from sales and securitizations of loans	2,062	1,654
Purchases of investments	(69,673)	(41,030)
Proceeds from sales of investments	31,436	20,688
Proceeds from maturities of investments	47,363	21,509
Capital expenditures on premises and equipment and capitalized software	(518)	(969)
Proceeds from sales of premises and equipment, subsidiaries and affiliates and repossessed assets	38	101
Other, net	38	49
Net cash provided by (used in) investing activities of continuing operations	16,043	(32,124)
Cash flows from financing activities of continuing operations
Dividends paid	(1,320)	(1,095)
Redemption of preferred stock	(480)	(97)
Treasury stock acquired	(4,055)	(2,378)
Stock tendered for payment of withholding taxes	(358)	(475)
Change in federal funds purchased and securities loaned and sold under agreements to repurchase	12,604	15,482
Issuance of long-term debt	15,552	20,769
Payments and redemptions of long-term debt	(6,568)	(17,882)
Change in deposits	17,186	41,397
Change in short-term borrowings	6,976	(8,358)
Net cash provided by financing activities of continuing operations	39,537	47,363
Effect of exchange rate changes on cash and due from banks	(176)	(7)
Change in cash and due from banks and deposits with banks	17,788	22,188
Cash, due from banks and deposits with banks at beginning of period	188,105	180,516
Cash, due from banks and deposits with banks at end of period	205,893	202,704
Cash and due from banks and deposits with banks at end of period	188,105	202,704
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes	1,325	738
Cash paid during the period for interest	6,931	4,586
Non-cash investing activities
Transfers to loans HFS from loans	2,000	900
Transfers to OREO and other repossessed assets	$ 36	$ 26