CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests		$ 11,189	$ 12,400
Net income attributable to noncontrolling interests		122	68
Citigroup’s net income		11,067	12,332
Income (loss) from discontinued operations, net of taxes		0	(229)
Income from continuing operations—excluding noncontrolling interests		11,067	12,561
Adjustments to reconcile net income to net cash provided by (used in) operating activities of continuing operations
Net loss (gain) on sale of significant disposals	[1]	(1,462)	(616)
Depreciation and amortization		3,388	3,154
Deferred income taxes	[2]	(979)	(576)
Provisions for credit losses and for benefits and claims	[2],[3]	5,639	3,394
Realized gains from sales of investments		(151)	(74)
Impairment losses on investments and other assets		227	277
Goodwill impairment		0	535
Change in trading account assets		(72,397)	(26,385)
Change in trading account liabilities		(6,023)	34,950
Change in brokerage receivables net of brokerage payables		(6,144)	1,055
Change in loans held-for-sale (HFS)		2,117	3,499
Change in other assets		(7,134)	(2,754)
Change in other liabilities		(3,715)	1,303
Other, net	[2],[4]	6,817	(18,067)
Total adjustments		(79,817)	(305)
Net cash provided by (used in) operating activities of continuing operations		(68,750)	12,256
Cash flows from investing activities of continuing operations
Change in securities borrowed and purchased under agreements to resell		30,342	(21,926)
Change in loans		(17,733)	(5,788)
Proceeds from divestitures	[1]	0	3,242
Proceeds from sales and securitizations of loans		3,397	3,077
Net payment due to transfer of net liabilities associated with divestitures	[1]	(1,166)	0
Available-for-sale debt securities
Purchases of investments	[2],[4]	(171,154)	(177,347)
Proceeds from sales of investments		35,580	86,454
Proceeds from maturities of investments	[2],[4]	149,049	102,857
Held-to-maturity debt securities
Purchases of investments		(734)	(39,288)
Proceeds from maturities of investments		6,955	9,913
Capital expenditures on premises and equipment and capitalized software		(4,818)	(3,667)
Proceeds from sales of premises and equipment and repossessed assets		16	46
Other, net	[2],[4],[5]	273	(821)
Net cash provided by (used in) investing activities of continuing operations		30,007	(43,248)
Cash flows from financing activities of continuing operations
Dividends paid		(3,899)	(3,777)
Issuance of preferred stock		2,739	0
Redemption of preferred stock		(750)	0
Treasury stock acquired		(1,429)	(3,250)
Stock tendered for payment of withholding taxes		(324)	(339)
Change in securities loaned and sold under agreements to repurchase		54,326	12,144
Issuance of long-term debt		52,465	85,459
Payments and redemptions of long-term debt		(50,296)	(47,011)
Change in deposits		(92,448)	8,947
Change in short-term borrowings		(5,430)	19,395
Net cash provided by (used in) financing activities of continuing operations		(45,046)	71,568
Effect of exchange rate changes on cash, due from banks and deposits with banks		(4,249)	(3,002)
Change in cash, due from banks and deposits with banks		(88,038)	37,574
Cash, due from banks and deposits with banks at beginning of period		342,025	262,033
Cash, due from banks and deposits with banks at end of period		253,987	299,607
Cash and due from banks (including segregated cash and other deposits)		26,548	26,502
Deposits with banks, net of allowance		227,439	273,105
Cash, due from banks and deposits with banks at end of period		253,987	299,607
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes		4,071	2,684
Cash paid during the period for interest		51,873	12,557
Non-cash investing and financing activities
Transfer of investment securities from HTM to AFS	[1],[5],[6]	3,324	0
Transfer of investment securities from AFS to HTM	[1],[5],[6]	0	21,688
Decrease in net loans associated with divestitures reclassified to HFS	[1],[5],[6]	0	16,956
Decrease in goodwill associated with divestitures reclassified to HFS	[1],[5],[6]	0	876
Transfers to loans HFS (Other assets) from loans HFI	[1],[5],[6]	6,031	4,037
Transfers from loans HFS (Other assets) to loans HFI	[1],[5],[6]	322	0
Decrease in deposits associated with divestitures reclassified to HFS	[1]	0	19,691
Non-cash redemption of preferred stock and increase in short-term borrowings		$ 1,500	$ 0

[1] See Note 2 for further information on significant disposals.

[2] 2022 amounts have been revised to conform to the current-period presentation.

[3] This total excludes the provision for credit losses on AFS securities, which is disclosed separately above.

[4] Consistent with the revisions disclosed in “Statement of Cash Flows” in Note 1 to the Consolidated Financial Statements in Citi’s 2022 Form 10-K, during the nine months ended September 30, 2022, $16.1 billion of cash flows related to maturities of short-term negotiable certificates of deposit (NCDs) and $41 million of cash flows related to purchases of short-term NCDs were reclassified from purchases and maturities of AFS securities within investing activities to Other, net within operating activities.

[5] n January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer.

[6] 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 25 for more information and balances as of September 30, 2023.