CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests		$ 7,086	$ 14,472
Net income attributable to noncontrolling interests		18	50
Citigroup’s net income		7,068	14,422
Loss from discontinued operations, net of taxes		(26)	0
Income from continuing operations—excluding noncontrolling interests		7,094	14,422
Adjustments to reconcile net income to net cash provided by (used in) operating activities of continuing operations
Depreciation and amortization		2,886	2,866
Provisions for credit losses on loans and unfunded lending commitments		17,043	6,113
Realized gains from sales of investments		(1,484)	(959)
Impairment losses on investments and other assets		154	28
Change in trading account assets		(72,115)	(50,790)
Change in trading account liabilities		27,096	(8,709)
Change in brokerage receivables net of brokerage payables		(6,026)	(19,994)
Change in loans HFS		1,288	287
Change in other assets		85	2,866
Change in other liabilities		(1,070)	2,360
Other, net		2,795	16,152
Total adjustments		(29,348)	(49,780)
Net cash used in operating activities of continuing operations		(22,254)	(35,358)
Cash flows from investing activities of continuing operations
Change in securities borrowed and purchased under agreements to resell		(38,036)	9,559
Change in loans		23,488	(11,518)
Proceeds from sales and securitizations of loans		924	2,717
Purchases of investments		(276,084)	(196,733)
Proceeds from sales of investments		130,237	96,400
Proceeds from maturities of investments		78,476	91,656
Capital expenditures on premises and equipment and capitalized software		(2,300)	(4,360)
Proceeds from sales of premises and equipment, subsidiaries and affiliates and repossessed assets		25	82
Other, net		70	105
Net cash used in investing activities of continuing operations		(83,200)	(12,092)
Cash flows from financing activities of continuing operations
Dividends paid		(4,024)	(4,048)
Issuance of preferred stock		1,500	1,496
Redemption of preferred stock		(1,500)	(480)
Treasury stock acquired		(2,925)	(12,495)
Stock tendered for payment of withholding taxes		(408)	(360)
Change in securities loaned and sold under agreements to repurchase		40,888	17,279
Issuance of long-term debt		65,599	40,174
Payments and redemptions of long-term debt		(47,521)	(37,898)
Change in deposits		192,033	74,599
Change in short-term borrowings		(7,610)
Change in short-term borrowings			2,884
Net cash provided by financing activities of continuing operations		236,032	81,151
Effect of exchange rate changes on cash and due from banks		(802)	(1,363)
Change in cash, due from banks and deposits with banks		129,776	32,338
Cash, due from banks and deposits with banks at beginning of period		193,919	188,105
Cash, due from banks and deposits with banks at end of period		323,695	220,443
Cash, due from banks and deposits with banks at end of period		323,695	220,443
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes		3,837	3,735
Cash paid during the period for interest		11,502	22,343
Non-cash investing activities
Transfers to loans HFS (Other assets) from loans	[1]	$ 2,122	$ 4,400

[1] Operating and finance lease right-of-use assets and lease liabilities represent non-cash investing and financing activities, respectively, and are not included in the non-cash investing activities presented here. See Note 22 to the Consolidated Financial Statements for more information and balances as of September 30, 2020.