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
	Mar. 31, 2026	Feb. 28, 2026	Mar. 31, 2026	Mar. 31, 2025
Increase (Decrease) in Stockholders' Equity
Shares outstanding at beginning of period (in shares)			160,656,704	149,506,832
Share issuances:
LPU redemption/exchange (in shares)			3,238,242	10,550,529
Other (in shares)			356,637	496,634
Treasury stock repurchases (in shares)	(9,319,716)	(59,601)	(9,379,317)	0
Shares outstanding at end of period (in shares)	155,988,950		155,988,950	161,924,550
Restricted Stock Units
Share issuances:
Issuance of Class A common stock for Newmark RSUs (in shares)			1,116,684	1,370,555