XML 160 R146.htm IDEA: XBRL DOCUMENT v3.22.4
Schedule I - Parent Company Only - Organization and Basis of Presentation - Additional Information (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Description Of Business [Line Items]      
Dividends declared per share to BGC Class A and Class B common stockholders (in dollars per share) $ 0.04 $ 0.04 $ 0.17
Dividends paid per share to BGC Class A and Class B common stockholders (in dollars per share) 0.04 0.04 0.17
Parent Company      
Description Of Business [Line Items]      
Dividends declared per share to BGC Class A and Class B common stockholders (in dollars per share) 0.04 0.04 0.17
Dividends paid per share to BGC Class A and Class B common stockholders (in dollars per share) $ 0.04 $ 0.04 $ 0.17