EARNINGS PER UNIT - Computations of Net Income (Loss) Per Unit (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Weighted average units outstanding:
Class A units outstanding (in shares)									34,979		28,170		22,677
OCGH units exchangeable into Class A units (in shares)									0	[1]	0	[1]	0	[1]
Total weighted average units outstanding (in shares)									34,979		28,170		22,677
Net income (loss) per Class A unit:
Net income (loss)	$ 64,907	$ 42,948	$ 56,577	$ 57,566	$ 39,271	$ 25,212	$ 24,719	$ 18,608	$ 221,998		$ 107,810		$ (95,972)
Class A units outstanding (in shares)									34,979		28,170		22,677
Net income (loss) per Class A unit (in dollars per share)	$ 1.69	$ 1.12	$ 1.71	$ 1.91	$ 1.30	$ 0.84	$ 0.84	$ 0.82	$ 6.35	[2]	$ 3.83	[2]	$ (4.23)	[2]

[1] Vested OCGH units are potentially exchangeable on a one-for-one basis into Class A units. As of December 31, 2013, there were 112,584,211 OCGH units outstanding, accordingly, the Company may cumulatively issue up to 112,584,211 additional Class A units through March 1, 2023 if all such units were exchanged. For all periods presented, OCGH units have been excluded from the calculation of diluted earnings per unit because the exchange of these units would proportionally increase Oaktree Capital Group, LLC’s interest in the Oaktree Operating Group and could have an anti-dilutive effect on earnings per unit to the extent that tax-related or other expenses were to be incurred by the Company as a result of the exchange.

[2] All references to Class A units in these financial statements give effect to the conversion of previously outstanding 13 Class C units into Class A units on a one-for-one basis in April 2012.