Condensed Consolidated Statements of Financial Condition (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Assets
Cash and cash-equivalents	$ 687,412		$ 458,191
U.S. Treasury and government agency securities	350,760		370,614
Corporate investments, at equity	95,652	[1]	98,950
Due from affiliates	52,172		44,589
Deferred tax assets	159,171		159,171
Investments, at fair value	37,792,913		38,372,626
Other assets	125,440		127,244
Total assets	44,917,078	[2]	43,869,998
Liabilities:
Accrued compensation expense	139,117		118,921
Accounts payable, other accrued expenses and other liabilities	84,001		95,390
Due to affiliates	136,454		136,165
Debt obligations	608,929		615,179
Securities sold short, at fair value	122,865		126,530
Total liabilities	3,285,067		2,805,274
Commitments and contingencies
Non-controlling redeemable interests in consolidated funds	40,100,145		39,670,831
Unitholders' capital:
Paid-in capital	613,768		645,053
Accumulated deficit	(279,337)		(336,903)
Accumulated other comprehensive loss	(2,310)		(1,748)
Class A unitholders' capital	332,121		306,402
OCGH non-controlling interest in consolidated subsidiaries	1,199,745		1,087,491
Total unitholders' capital	1,531,866		1,393,893
Total liabilities and unitholders' capital	44,917,078		43,869,998
Common Class A [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	3,012,499		2,470,335
Investments, at fair value	37,792,913		38,372,626
Dividends and interest receivable	201,523		177,746
Due from brokers	376,975		405,143
Receivable for securities sold	1,237,088		501,199
Derivative assets, at fair value	138,706		107,560
Other assets	686,767		576,630
Liabilities:
Accounts payable, other accrued expenses and other liabilities	85,835		104,744
Payables for securities purchased	1,023,876		629,627
Securities sold short, at fair value	122,865		126,530
Derivative liabilities, at fair value	24,068		156,647
Distributions payable	225,357		330,446
Borrowings under credit facilities	$ 834,565		$ 491,625

[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.