SEGMENT REPORTING - Adjusted Net Income (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
Revenues:
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 revenues	43,183	56,786	52,414	42,539	46,802	31,906	29,207	37,068	194,922		144,983		155,770
Expenses:
Compensation and benefits									(365,696)		(330,018)		(308,194)
Equity-based compensation									(28,441)		(36,342)		(948,746)
Incentive income compensation									(482,551)		(222,594)		(179,234)
Depreciation and amortization expense									(7,119)		(7,397)		(6,583)
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]
Other income (expense), net									409		7,027	[5]	(1,209)
Adjusted net income									1,080,707		717,250		428,384
Investment Management
Revenues:
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 revenues									2,038,750		1,410,948		1,052,047
Expenses:
Compensation and benefits									(365,306)		(329,741)		(308,115)
Equity-based compensation									(3,828)		(318)		0
Incentive income compensation									(436,217)		(222,594)		(179,234)
General and administrative expenses									(117,361)		(102,685)		(94,655)
Depreciation and amortization expense									(7,119)		(7,397)		(6,583)
Total expenses									(929,831)	[2]	(662,735)	[3]	(588,587)	[4]
Adjusted net income before interest and other income (expense)									1,108,919		748,213		463,460
Interest Expense Net Of Interest Income									(28,621)	[6]	(31,730)	[6]	(33,867)	[6]
Other income (expense), net									409		767	[5]	(1,209)
Adjusted net income									$ 1,080,707		$ 717,250		$ 428,384

[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 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.

[6] nterest income was $3.2 million, $2.6 million and $2.3 million for the years ended December 31, 2013, 2011 and 2010, respectively.