Regulatory Requirements	3 Months Ended
Mar. 31, 2021
Regulatory Capital Requirements [Abstract]
Regulatory Requirements	10. REGULATORY REQUIREMENTS Under the SEC Uniform Net Capital Rule (SEC Rule 15c3-1) Alternative Standard under Section (a)(1)(ii), the minimum net capital requirement is $250. At March 31, 2021, Moelis U.S. had net capital of $101,232, which was $100,982 in excess of its required net capital. At December 31, 2020, Moelis U.S. had net capital of $96,800 which was $96,550 in excess of its required net capital. Certain other non-U.S. subsidiaries are subject to various securities and banking regulations and capital adequacy requirements promulgated by the regulatory and exchange authorities of the countries in which they operate. These subsidiaries have exceeded their local capital adequacy requirements at March 31, 2021.

The entire disclosure for financial services, specifically for brokers and dealers, for the accounting period and at the balance sheet date. Disclosure may include amounts receivable from and payable to broker-dealers and clearing organizations, including securities failed to receive, deposits received for securities loaned, amounts payable to clearing organizations related to open transactions, floor brokerage payables and payables for commodities futures accounts liquidating to an equity balance on a broker-dealer's records. May also include disclosure on company's consolidation policy and a note indicating the amount of the broker-dealer's actual net capital and the amount of required net capital.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-URI http://asc.fasb.org/topic&trid=2176223

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