CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated net income (loss)	$ 146,539	$ 123,228	$ 38,775
Adjustments to reconcile consolidated net income (loss) to net cash provided by (used in) operating activities:
Fixed asset depreciation and intangible asset amortization	103,309	81,434	80,417
Employee loan amortization and reserves on employee loans	140,314	59,413	51,313
Equity-based compensation and allocations of net income to limited partnership units and FPUs	329,588	369,143	355,378
Deferred compensation expense	762	51	54
Losses (gains) on equity method investments	(8,328)	(8,430)	(9,152)
Unrealized/realized losses (gains) on financial instruments owned, at fair value and other investments	(7,838)	(38,577)	(4,406)
Amortization of discount (premium) on notes payable	4,830	1,286	3,662
Impairment of fixed assets, intangible assets and investments	2,793	746	3,144
Deferred tax provision (benefit)	(15,039)	(69,754)	(60,556)
Change in estimated acquisition earn-out payables	4,977	1,146	1,442
Forfeitures of Class A common stock	(528)	(1,065)	(1,190)
Loss (gain) on divestiture	(66,718)	(39,019)	0
Other	2,395	10,663	0
Consolidated net income (loss), adjusted for non-cash and non-operating items	637,056	490,265	458,881
Decrease (increase) in operating assets:
Financial instruments owned, at fair value	60,481	(143,433)	(5,475)
Receivables from broker-dealers, clearing organizations, customers and related broker-dealers	(97,508)	(21,584)	212,490
Accrued commissions receivable, net	(65,808)	(20,803)	(5,750)
Loans, forgivable loans and other receivables from employees and partners, net	(153,833)	(20,057)	(77,464)
Receivables from related parties	541	(3,890)	(1,380)
Other assets	(44,234)	(10,674)	19,803
Increase (decrease) in operating liabilities:
Accrued compensation	43,254	19,603	18,450
Payables to broker-dealers, clearing organizations, customers and related broker-dealers	80,939	23,319	(203,902)
Payables to related parties	(361)	11,504	24,145
Accounts payable, accrued and other liabilities	(66,174)	(8,900)	(34,595)
Net cash provided by (used in) operating activities	394,353	315,350	405,203
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from disposal of subsidiary	77,877	45,741	0
Purchases of fixed assets	(21,488)	(29,624)	(14,924)
Capitalization of software development costs	(44,546)	(42,431)	(44,974)
Purchase of equity method investments	(750)	(1,750)	0
Proceeds from equity method investments	8,936	9,026	9,421
Payments for acquisitions, net of cash acquired	(280,712)	(64,174)	(39,755)
Purchase of investment carried under measurement alternative	(21,009)	(13,155)	0
Loan to related parties	(120,000)	(180,000)	0
Proceeds from repayment of related parties loan	120,000	180,000	0
Purchase of other assets	(953)	(627)	(475)
Net cash provided by (used in) investing activities	(282,645)	(96,994)	(90,707)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of long-term debt borrowings	(1,005,000)	(815,000)	(623,251)
Issuance of long-term debt, net of deferred issuance costs	1,437,741	965,057	754,321
Earnings distributions to limited partnership interests and other noncontrolling interests	(470)	(7,805)	(19,041)
Redemption and repurchase of equity awards	(109,154)	(138,894)	(117,867)
Dividends to stockholders	(38,994)	(34,165)	(17,381)
Repurchase of Class A common stock	(281,514)	(262,211)	(114,580)
Proceeds from sale of Cantor units in BGC Holdings	0	0	11,539
Proceeds from noncontrolling interests	0	171,667	0
Payments on acquisition earn-outs	(1,378)	(1,000)	(18,703)
Other	0	(26,667)	0
Net cash provided by (used in) financing activities	21,231	(149,018)	(146,880)
Effect of exchange rate changes on Cash and cash equivalents, and Cash segregated under regulatory requirements	7,461	(8,961)	3,270
Net increase (decrease) in Cash and cash equivalents, and Cash segregated under regulatory requirements including Cash and Cash segregated under regulatory requirements	140,400	60,377	170,886
Cash and cash equivalents, and Cash segregated under regulatory requirements at beginning of period	733,273	672,896	502,010
Cash and cash equivalents, and Cash segregated under regulatory requirements at end of period	873,673	733,273	672,896
Supplemental cash information:
Cash paid during the period for taxes	148,137	103,524	70,718
Cash paid during the period for interest	109,418	88,392	80,664
Supplemental non-cash information:
Issuance of Class A common stock upon exchange of limited partnership interests	0	0	45,868
Issuance of Class A and contingent Class A common stock and limited partnership interests for acquisitions	6,588	8,520	7,275
ROU assets and liabilities	97,625	20,109	27,201
Related Party
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of short-term borrowings	0	(275,000)	0
Issuance of short term borrowings from related parties	20,000	275,000	0
Nonrelated Party
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of short-term borrowings	$ 0	$ 0	$ (1,917)