Organization and Basis of Presentation (Details) - $ / shares			3 Months Ended
	Jul. 01, 2023	Jun. 30, 2023	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Related Party Transaction [Line Items]
Conversion of stock, shares converted (in shares)	64,000,000
Minimum number of shares required to be issued (in shares)	75,000,000.0
Stock Purchased On 6/30/2023
Related Party Transaction [Line Items]
Conversion of stock, shares converted (in shares)	5,700,000
Class A Common Stock
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)			$ 0.01		$ 0.01
Corporate conversion, exchange ratio (in shares)	1
Issuance of common stock (in shares)			43,025	46,674
Class A Common Stock | BGC Partners
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)	$ 0.01
Class A Common Stock | BGC Group
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)	$ 0.01
Class B Common Stock
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)			$ 0.01		$ 0.01
Corporate conversion, exchange ratio (in shares)	1
Issuance of common stock (in shares)		64,000,000	0	0
Class B Common Stock | BGC Partners
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)	$ 0.01
Class B Common Stock | BGC Group
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)	$ 0.01