Consolidated Statements of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Investments assets pledged	$ 141,931	$ 101,298
Partners' Capital, common units: issued	556,354,387	489,430,907
Partners' Capital, common units: outstanding	556,354,387	489,430,907
Assets
Cash Held by Blackstone Funds and Other	1,404,411	724,762
Investments	20,847,270	15,128,299
Accounts Receivable	638,164	406,140
Due from Affiliates	1,120,067	860,514
Other Assets	376,372	337,396
Total Assets	28,931,552	21,909,129
Liabilities
Loans Payable	13,051,404	8,867,568
Due to Affiliates	2,002,644	1,811,468
Accounts Payable, Accrued Expenses and Other	1,038,888	828,873
Total Liabilities	17,716,605	12,656,843
Blackstone Funds And Other
Assets
Cash Held by Blackstone Funds and Other	1,163,915	598,441
Investments	12,320,611	8,961,960
Accounts Receivable	187,343	33,405
Due from Affiliates	27,034	36,502
Other Assets	35,447	12,031
Total Assets	13,734,350	9,642,339
Liabilities
Loans Payable	11,375,877	7,801,136
Due to Affiliates	253,546	311,909
Accounts Payable, Accrued Expenses and Other	518,656	244,488
Total Liabilities	$ 12,148,079	$ 8,357,533