Document and Entity Information
Jun. 02, 2022
Cover [Abstract]  
Entity Registrant Name Moelis & Co
Entity Address, State or Province NY
Amendment Flag false
Entity Central Index Key 0001596967
Document Type 8-K
Document Period End Date Jun. 02, 2022
Entity Incorporation State Country Code DE
Entity File Number 001-36418
Entity Tax Identification Number 46-4500216
Entity Address, Address Line One 399 Park Avenue
Entity Address, Address Line Two 4th Floor
Entity Address, City or Town New York
Entity Address, Postal Zip Code 10022
City Area Code 212
Local Phone Number 883-3800
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Class A Common Stock
Trading Symbol MC
Security Exchange Name NYSE
Entity Emerging Growth Company false