| Cover Page. | Oct. 14, 2021 |
| Document Type | 8-K |
| Document Period End Date | Oct. 14, 2021 |
| Entity Registrant Name | Oaktree Capital Group, LLC |
| Entity Central Index Key | 0001403528 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35500 |
| Entity Tax Identification Number | 26-0174894 |
| Entity Address, Address Line One | 333 South Grand Avenue, 28th Floor |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90071 |
| City Area Code | 213 |
| Local Phone Number | 830-6300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Series A Preferred Stock | |
| Title of 12(b) Security | 6.625% Series A preferred units |
| Trading Symbol | OAK-PA |
| Security Exchange Name | NYSE |
| Series B Preferred Stock | |
| Title of 12(b) Security | 6.550% Series B preferred units |
| Trading Symbol | OAK-PB |
| Security Exchange Name | NYSE |
