Stock Transactions and Unit Redemptions - Schedule of Changes in Shares of Common Stock Outstanding (Details) - Class A Common Stock - shares	1 Months Ended			3 Months Ended			12 Months Ended
	Dec. 31, 2022	Nov. 30, 2022	Oct. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity
Shares outstanding at beginning of period (in shares)						168,272,371	168,272,371	161,175,894	156,265,461
Share issuances:
LPU redemption/exchange (in shares)							4,930,499	6,591,462	4,868,169
Other (in shares)							(36,596)	18,890,659	0
Treasury stock repurchases (in shares)	0	(1,701,287)	0	(10,163,677)	(11,370,647)	(1,682,871)	(24,918,482)	(20,237,430)	(930,226)
Shares outstanding at end of period (in shares)	150,384,605						150,384,605	168,272,371	161,175,894
Restricted Stock Units
Share issuances:
Issuance of Class A common stock for Newmark RSUs (in shares)							2,136,813	1,851,786	972,490