CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests		$ 11,930	$ 9,943
Net income attributable to noncontrolling interests		95	117
Citigroup’s net income		11,835	9,826
Income (loss) from discontinued operations, net of taxes		(2)	(2)
Income from continuing operations—excluding noncontrolling interests		11,837	9,828
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]	184	0
Depreciation and amortization		3,270	3,292
Deferred income taxes		227	(1,574)
Provisions for credit losses and for benefits and claims		8,045	7,516
Goodwill impairment		726	0
Realized gains from sales of investments		(364)	(210)
Impairment losses on investments and other assets		120	92
Change in trading account assets		(119,637)	(46,456)
Change in trading account liabilities		26,397	(12,811)
Change in brokerage receivables net of brokerage payables		(2,156)	7,909
Change in loans held-for-sale (HFS)		312	(3,211)
Change in other assets		(10,345)	(4,327)
Change in other liabilities	[2]	44	(7,663)
Other, net		(12,847)	3,150
Total adjustments		(106,024)	(54,293)
Net cash provided by (used in) operating activities of continuing operations		(94,187)	(44,465)
Cash flows from investing activities of continuing operations
Change in securities borrowed and purchased under agreements to resell		(47,285)	59,772
Change in loans		(53,268)	(10,257)
Purchase of portfolio of consumer loans		0	(700)
Proceeds from sales and securitizations of loans		3,743	3,368
Available-for-sale (AFS) debt securities
Purchases of investments		(209,028)	(181,245)
Proceeds from sales of investments		70,604	40,839
Proceeds from maturities of investments		133,729	164,025
Held-to-maturity (HTM) debt securities
Purchases of investments		(5,134)	(11,878)
Proceeds from maturities of investments		50,468	17,340
Capital expenditures on premises and equipment and capitalized software		(4,889)	(4,812)
Proceeds from sales of premises and equipment and repossessed assets		24	201
Other, net		2,084	1,848
Net cash provided by (used in) investing activities of continuing operations		(58,952)	78,501
Cash flows from financing activities of continuing operations
Dividends paid		(4,021)	(3,885)
Issuance of preferred stock		4,690	3,786
Redemption of preferred stock		(3,500)	(5,050)
Treasury stock acquired	[3]	(8,750)	(1,506)
Stock tendered for payment of withholding taxes		(775)	(448)
Change in securities loaned and sold under agreements to repurchase		94,971	270
Issuance of long-term debt		96,296	78,163
Payments and redemptions of long-term debt		(77,975)	(67,529)
Change in deposits		105,559	1,318
Change in short-term borrowings		6,255	3,883
Net cash provided by (used in) financing activities of continuing operations		212,750	9,002
Effect of exchange rate changes on cash, due from banks and deposits with banks		11,917	(876)
Change in cash, due from banks and deposits with banks		71,528	42,162
Cash, due from banks and deposits with banks at beginning of period		276,532	260,932
Cash, due from banks and deposits with banks at end of period		348,060	303,094
Cash and due from banks (including segregated cash and other deposits)		23,545	25,266
Deposits with banks, net of allowance		324,515	277,828
Cash, due from banks and deposits with banks at end of period		348,060	303,094
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the period for income taxes	[4]	4,716	4,464
Cash paid during the period for interest		60,667	67,152
Non-cash investing activities
Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Additions to Held-for-sale	[1],[5]	1,680	0
Transfers to loans HFS (Other assets) from loans HFI	[1],[5]	3,254	3,861
Decrease in deposits associated with divestitures reclassified to HFS	[1]	$ 6,088	$ 0

[1]     See Note 2.

[2]     Includes balances related to the FDIC special assessment (see Note 18 to the Consolidated Financial Statements in Citi’s 2024 10-K) and restructuring charges (see Note 9).

[3] Balances based on transaction date.

[4] Includes net cash paid (received) for purchases and sales of nonrefundable, transferable tax credits.

[5] 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 26 for more information and balances as of September 30, 2025.