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Amount due from parties in nontrade transactions, classified as other.

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The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Related-Party Transactions - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Related-party transactions
Compensation and benefits expense related to tranche of promissory note	$ 242,231,000	$ 160,437,000	$ 536,264,000	$ 477,166,000
Unsecured Promissory Notes
Related-party transactions
Compensation and benefits expense related to tranche of promissory note				100,000
Related Party
Related-party transactions
Revenue from related parties	0	4,644,000	0	8,370,000
Manager \| Aircraft Lease Entered into During August 2014
Related-party transactions
Expenses	323,000	324,000	970,000	972,000
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			93,000	7,000
Moelis Asset Management LP
Related-party transactions
Fee for services	57,000	56,000	168,000	166,000
Due from related party	0		0		$ 0
Atlas Crest Entities
Related-party transactions
Fee for services	$ 0	$ 30,000	0	90,000
Fee for services per month			$ 10,000
MA Financial
Related-party transactions
Revenue from related parties				$ 4,212,000