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Related-Party Transactions - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Related-party transactions
Compensation and benefits expense related to tranche of promissory note	$ 145,794,000	$ 140,092,000	$ 294,033,000	$ 316,729,000
Related Party
Related-party transactions
Revenue from related parties	0	3,567,000	0	3,726,000
Unsecured Promissory Notes
Related-party transactions
Compensation and benefits expense related to tranche of promissory note				100,000
Manager \| Aircraft Lease Entered into During August 2014
Related-party transactions
Expenses	323,000	324,000	647,000	648,000
Employees
Related-party transactions
Unsecured promissory notes from employees	3,119,000		$ 3,119,000		$ 3,119,000
Employees \| Unsecured Promissory Notes
Related-party transactions
Interest rates (as a percent)			4.00%
Principal repayments			$ 0	0
Interest income recognized			62,000	6,000
Moelis Asset Management LP
Related-party transactions
Fee for services	56,000	55,000	111,000	110,000
Due from related party	0		0		0
Due to related party	0		0		$ 0
Atlas Crest Entities
Related-party transactions
Fee for services	$ 0	$ 30,000	0	$ 60,000
Fee for services peer month			$ 10,000