CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Dividends declared per share of common stock (in dollars per share)	$ 0.03	$ 0.03
Dividends declared and paid per share of common stock (in dollars per share)	$ 0.03	$ 0.03
Class A Common Stock
Treasury stock repurchases (in shares)	9,379,317	0
Forfeited of shares (in shares)	52,376	60,238
Class A Common Stock | Common Stock
Exchange of Cantor Units for Newmark Class A common stock (in shares)		7,221,277
Grant of exchangeability, redemption and issuance of Class A common stock (in shares)	4,763,939	5,256,679
Treasury stock repurchases (in shares)	9,379,317