Related Party Transactions - Service Agreements and Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction
Fees to related parties	$ 22,573	$ 25,025	$ 26,162
Loans, forgivable loans and other receivables from employees and partners, net	454,270	403,710
Compensation and employee benefits	1,278,119	1,534,824	1,386,629
Employee Loans
Related Party Transaction
Loans, forgivable loans and other receivables from employees and partners, net	454,300	403,700
Compensation and employee benefits	73,600	39,000	27,700
Cantor Fitzgerald Limited Partnership And B G C Partners Incorporation
Related Party Transaction
Fees to related parties	$ 22,600	$ 25,000	$ 26,200

The aggregate amount of expenditures for salaries, wages, profit sharing and incentives compensation, and other employee benefits, including share-based compensation and the expense related to allocation of income to limited partnership units and founding/working partner units.

No definition available.

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

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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