ORGANIZATION - Additional Information (Detail)	1 Months Ended	6 Months Ended
Dec. 31, 2008 Entity	Jun. 18, 2007 Entity	Jun. 30, 2012 Times Person Segment
Organization [Line Items]
Number of business segments			5
Number of Blackstone founders managing the Partnership			1
Number of holding partnerships in reorganization	4	5
Number of times per year, holders of limited partnership interest can exchange their limited partnership interest			4
Partnership Unit to Blackstone Common Unit ratio			1

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration