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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
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Mar. 31, 2024 | Feb. 29, 2024 | Jan. 31, 2024 | Mar. 31, 2024 | Mar. 31, 2023
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Shares outstanding at beginning of period (in shares) |  |  | 152,639,359 | 152,639,359 | 150,384,605
Share issuances: |  |  |  |  |
LPU redemption/exchange (in shares) |  |  |  | 2,189,183 | 1,927,905
Other (in shares) |  |  |  | 246,426 | (155,240)
Treasury stock repurchases (in shares) | (2,656,916) | (771,477) | (35,006) | (3,463,399) | 0
Shares outstanding at end of period (in shares) | 152,681,596 |  |  | 152,681,596 | 153,142,810
Restricted Stock Units |  |  |  |  |
Share issuances: |  |  |  |  |
Issuance of Class A common stock for Newmark RSUs (in shares) |  |  |  | 1,070,027 | 985,540

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