Condensed Consolidated Statements of Financial Condition (USD $)	Sep. 30, 2013		Dec. 31, 2012
Assets
Cash and cash-equivalents	$ 304,743,000		$ 458,191,000
U.S. Treasury and government agency securities	706,865,000		370,614,000
Corporate investments, at equity	90,680,000	[1]	98,950,000
Due from affiliates	49,076,000		44,589,000
Deferred tax assets	293,579,000		159,171,000
Investments, at fair value	38,764,427,000		38,372,626,000
Other assets	176,920,000		127,244,000
Total assets	44,701,181,000	[2]	43,869,998,000
Liabilities:
Accrued compensation expense	187,834,000		118,921,000
Accounts payable, other accrued expenses and other liabilities	74,015,000		95,390,000
Due to affiliates	250,290,000		136,165,000
Debt obligations	585,714,000		615,179,000
Securities sold short, at fair value	120,598,000		126,530,000
Total liabilities	4,819,762,000		2,805,274,000
Commitments and contingencies (Note 12)
Non-controlling redeemable interests in consolidated funds	38,329,912,000		39,670,831,000
Unitholders’ capital:
Paid-in capital	614,600,000		645,053,000
Accumulated deficit	(179,812,000)		(336,903,000)
Accumulated other comprehensive loss	(1,111,000)		(1,748,000)
Class A unitholders’ capital	433,677,000		306,402,000
OCGH non-controlling interest in consolidated subsidiaries	1,117,830,000		1,087,491,000
Total unitholders’ capital	1,551,507,000		1,393,893,000
Total liabilities and unitholders’ capital	44,701,181,000		43,869,998,000
Class A Units [Member]
Unitholders’ capital:
Common stock	0		0
Class B Units [Member]
Unitholders’ capital:
Common stock	0		0
Consolidated funds [Member]
Assets
Cash and cash-equivalents	2,319,286,000		2,470,335,000
Investments, at fair value	38,764,427,000		38,372,626,000
Dividends and interest receivable	175,403,000		177,746,000
Due from brokers	342,763,000		405,143,000
Receivable for securities sold	749,309,000		501,199,000
Derivative assets, at fair value	106,857,000		107,560,000
Other assets	621,273,000		576,630,000
Liabilities:
Accounts payable, other accrued expenses and other liabilities	28,163,000		104,744,000
Payables for securities purchased	1,294,253,000		629,627,000
Securities sold short, at fair value	120,598,000		126,530,000
Derivative liabilities, at fair value	154,680,000		156,647,000
Distributions payable	96,037,000		330,446,000
Borrowings under credit facilities	$ 2,028,178,000		$ 491,625,000

[1] 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.

[2] 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.