SEGMENT REPORTING - Schedule of Reconciliation of Total Segments to Income Loss Attributable to Oaktree Capital Group, LLC and Total Assets (Detail) (USD $) In Thousands, 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
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees											$ 192,605	[1]	$ 134,568	[1]	$ 140,715	[1]
Incentive income											2,317	[1]	10,415	[1]	15,055	[1]
Investment income											56,027	[1]	25,382	[1]	8,600	[1]
Total expenses	(331,859)		(214,158)	(285,540)	(275,505)	(248,008)		(168,020)	(207,008)	(167,567)	(1,107,062)	[2]	(790,603)	[3]	(1,644,864)	[4]
Interest expense, net											(61,160)	[5]	(45,773)	[5]	(50,943)	[5]
Other income (expense), net											409		7,027	[6]	(1,209)
Other income (loss) of consolidated funds											7,153,828	[7]	7,362,259	[7]	1,245,089	[7]
Income taxes											(26,232)	[8]	(30,858)	[8]	(21,088)	[8]
Net income attributable to non-controlling redeemable interests in consolidated funds											(5,163,939)		(6,016,342)		(233,573)
Net (income) loss attributable to OCGH non-controlling interest in consolidated subsidiaries											(824,795)	[9]	(548,265)	[9]	446,246	[9]
Net income (loss) attributable to Oaktree Capital Group, LLC	64,907		42,948	56,577	57,566	39,271		25,212	24,719	18,608	221,998		107,810		(95,972)
Corporate investments (includes $67,596 and $0 measured at fair value as of December 31, 2013 and 2012, respectively)	169,927	[10]				98,950	[10]				169,927	[10]	98,950	[10]	121,825	[10]
Total assets	45,263,254	[11]				43,869,998	[11]				45,263,254	[11]	43,869,998	[11]	44,294,156	[11]
Investment Management
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees											749,901	[1]	747,440	[1]	724,321	[1]
Incentive income											1,030,195	[1]	461,116	[1]	303,963	[1]
Investment income											258,654	[1]	202,392	[1]	23,763	[1]
Total expenses											(929,831)	[2]	(662,735)	[3]	(588,587)	[4]
Interest expense, net											(28,621)	[5]	(31,730)	[5]	(33,867)	[5]
Other income (expense), net											409		767	[6]	(1,209)
Other income (loss) of consolidated funds											0	[7]	0	[7]	0	[7]
Income taxes											0		0		0
Net income attributable to non-controlling redeemable interests in consolidated funds											0		0		0
Net (income) loss attributable to OCGH non-controlling interest in consolidated subsidiaries											0		0		0
Net income (loss) attributable to Oaktree Capital Group, LLC											1,080,707		717,250		428,384
Corporate investments (includes $67,596 and $0 measured at fair value as of December 31, 2013 and 2012, respectively)	1,197,173	[10]				1,115,952	[10]				1,197,173	[10]	1,115,952	[10]	1,159,287	[10]
Total assets	2,817,127	[11]				2,359,548	[11]				2,817,127	[11]	2,359,548	[11]	2,083,908	[11]
Adjustments
Segment Reporting, Asset Reconciling Item [Line Items]
Management fees											(557,296)	[1]	(612,872)	[1]	(583,606)	[1]
Incentive income											(1,027,878)	[1]	(450,701)	[1]	(288,908)	[1]
Investment income											(202,627)	[1]	(177,010)	[1]	(15,163)	[1]
Total expenses											(177,231)	[2]	(127,868)	[3]	(1,056,277)	[4]
Interest expense, net											(32,539)	[5]	(14,043)	[5]	(17,076)	[5]
Other income (expense), net											0		6,260	[6]	0
Other income (loss) of consolidated funds											7,153,828	[7]	7,362,259	[7]	1,245,089	[7]
Income taxes											(26,232)		(30,858)		(21,088)
Net income attributable to non-controlling redeemable interests in consolidated funds											(5,163,939)		(6,016,342)		(233,573)
Net (income) loss attributable to OCGH non-controlling interest in consolidated subsidiaries											(824,795)		(548,265)		446,246
Net income (loss) attributable to Oaktree Capital Group, LLC											(858,709)		(609,440)		(524,356)
Corporate investments (includes $67,596 and $0 measured at fair value as of December 31, 2013 and 2012, respectively)	(1,027,246)	[10]				(1,017,002)	[10]				(1,027,246)	[10]	(1,017,002)	[10]	(1,037,462)	[10]
Total assets	$ 42,446,127	[11]				$ 41,510,450	[11]				$ 42,446,127	[11]	$ 41,510,450	[11]	$ 42,210,248	[11]

[1] The adjustment represents the elimination of amounts attributable to the consolidated funds.

[2] The expense adjustment consists of (a) equity-based compensation charges of $24,613 related to unit grants made before the Company’s initial public offering, (b) consolidated fund expenses of $105,089, (c) expenses incurred by the Intermediate Holding Companies of $1,195 and (d) the effect of timing differences in the recognition of incentive income compensation expense between adjusted net income and net income attributable to OCG of $46,334.

[3] The expense adjustment consists of (a) equity-based compensation charges of $36,024 related to unit grants made before the Company’s initial public offering, (b) consolidated fund expenses of $91,291 and (c) expenses incurred by the Intermediate Holding Companies of $553.

[4] The expense adjustment consists of (a) equity-based compensation charges of $948,746 related to unit grants made before the Company’s initial public offering, (b) consolidated fund expenses of $106,763 and (c) expenses incurred by the Intermediate Holding Companies of $768.

[5] The interest expense adjustment represents the inclusion of interest expense attributable to non-controlling interests of the consolidated funds and the exclusion of segment interest income.

[6] The other income, net adjustment represents other income or expenses of OCG or its Intermediate Holding Companies. This amount is attributable to a reduction in the amount of the deferred tax asset associated with the Company's tax receivable agreement, which reduced the tax receivable agreement liability payable to OCGH unitholders.

[7] The adjustment to other income of consolidated funds primarily represents the inclusion of interest, dividend and other investment income attributable to non-controlling interests of the consolidated funds.

[8] Because adjusted net income is a pre-tax measure, this adjustment eliminates the effect of income tax expense from adjusted net income.

[9] Because adjusted net income is calculated at the Operating Group level, this adjustment adds back the effect of items applicable to OCG, its Intermediate Holding Companies or the OCGH non-controlling interest.

[10] The adjustment to corporate investments is to remove from segment assets the consolidated funds that are treated as equity method investments for segment reporting purposes.

[11] The total assets adjustment represents the inclusion of investments and other assets of the consolidated funds, net of segment assets eliminated in consolidation, which are primarily corporate investments in funds and incentive income receivable.