CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Dividends declared per share of common stock (in dollars per share)	$ 0.12	$ 0.12	$ 0.12
Dividends declared and paid per share of common stock (in dollars per share)	$ 0.12	$ 0.12	$ 0.10
FPU's
Issuance of Class A common stock for Newmark RSUs (in shares)	662,703	422,646	415,432
Class A Common Stock
Treasury stock repurchases (in shares)	17,729,096	5,785,370	24,918,482
Forfeited of shares (in shares)	308,426
Class A Common Stock | Common Stock
Grant of exchangeability, redemption and issuance of limited partnership interests and issuance of common stock (in shares)	14,596,569	8,040,128	7,030,716
Treasury stock repurchases (in shares)	17,729,096	5,785,370	24,918,482