Cover Page - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Entity Information [Line Items]
Entity Incorporation, State or Country Code	DE
Document Type	10-Q
Document Quarterly Report	true
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	001-35500
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Registrant Name	Oaktree Capital Group, LLC
Entity Address, Address Line One	333 South Grand Avenue
Entity Address, Address Line Two	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
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Central Index Key	0001403528
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	false
Entity Small Business	false
Entity Tax Identification Number	26-0174894
Class A Units
Entity Information [Line Items]
Title of 12(b) Security	Class A units representing limited liability company interests
Trading Symbol	OAK
Entity Common Stock, Shares Outstanding		75,842,110
Security Exchange Name	NYSE
Class B Units
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		83,789,066
Series A Preferred Units
Entity Information [Line Items]
Title of 12(b) Security	6.625% Series A preferred units
Trading Symbol	OAK-A
Security Exchange Name	NYSE
Series B Preferred Units
Entity Information [Line Items]
Title of 12(b) Security	6.550% Series B preferred units
Trading Symbol	OAK-B
Security Exchange Name	NYSE