Stock Transactions and Unit Purchases - Schedule of Changes in Shares of Common Stock Outstanding (Details) - Class A Common Stock - shares	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2025	May 31, 2025	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Increase (Decrease) in Stockholders' Equity
Shares outstanding at beginning of period (in shares)			161,924,550	152,681,596	149,506,832	152,639,359
Share issuances:
LPU redemption/exchange (in shares)			2,500,090	2,978,758	13,050,619	5,167,941
Other (in shares)			(33,427)	(145,034)	463,207	101,392
Treasury stock repurchases (in shares)	0	(10,839,674)	(10,839,674)	(5,502,703)	(10,839,674)	(8,966,102)
Shares outstanding at end of period (in shares)	154,352,509		154,352,509	150,384,929	154,352,509	150,384,929
Restricted Stock Units
Share issuances:
Issuance of Class A common stock for Newmark RSUs (in shares)			800,970	372,312	2,171,525	1,442,339