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Related Party Transactions - Service Agreements and Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Related Party Transaction
Fees to related parties	$ 7,792	$ 6,829
Loans, forgivable loans and other receivables from employees and partners, net	605,947		$ 500,833
Labor and related expense	363,999	399,483
Employee Loans
Related Party Transaction
Loans, forgivable loans and other receivables from employees and partners, net	605,900		$ 500,800
Labor and related expense	25,400	18,900
Cantor Fitzgerald Limited Partnership And B G C Partners Incorporation
Related Party Transaction
Fees to related parties	$ 7,800	$ 6,800

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- Definition

Amounts due from an Entity employee, not to include stockholders or officers, which are usually due after 1 year (or 1 business cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
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-URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864

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-Section 50
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- Definition

Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(4))
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
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+ References

No definition available.

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