CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Dividends declared per share of common stock (in dollars per share)	$ 0.03	$ 0.03	$ 0.06	$ 0.06
Dividends declared and paid per share of common stock (in dollars per share)	$ 0.03	$ 0.03	$ 0.06	$ 0.06
Class A Common Stock
Treasury stock repurchases (in shares)	10,839,674	5,502,703	10,839,674	8,966,102
Forfeited of shares (in shares)	33,427	735,781	93,665	735,781
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)	3,301,060	3,206,036	8,557,739	6,111,672
Treasury stock repurchases (in shares)	10,839,674	5,502,703	10,839,674	8,966,102