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Total Capital and Net Income Per Unit - Issuance of Common Units (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2012
Capital Unit [Line Items]
General Partner's proportionate contribution	2.00%
General Partner [Member]
Capital Unit [Line Items]
General Partner's proportionate contribution	2.00%

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X

- Definition

The number of units or percentage investment held by one or more members or limited partners of the LLC or LP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

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Data Type:	num:percentItemType
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