Stock Transactions and Unit Purchases - Schedule of Changes in Shares of Common Stock Outstanding (Details) - Class A Common Stock - shares	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity
Shares outstanding at beginning of period (in shares)	149,506,832	152,639,359
Share issuances:
LPU redemption/exchange (in shares)	10,550,529	2,189,183
Other (in shares)	496,634	246,426
Treasury stock repurchases (in shares)	0	(3,463,399)
Shares outstanding at end of period (in shares)	161,924,550	152,681,596
Restricted Stock Units
Share issuances:
Issuance of Class A common stock for Newmark RSUs (in shares)	1,370,555	1,070,027