Reclassification from Long-Term Borrowings to Short-Term Borrowings

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Face (par) amount of debt instrument at time of issuance.

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The average effective interest rate during the reporting period.

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Partnership's Debt (Parenthetical) (Detail) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	9 Months Ended
	Jul. 30, 2015	Jul. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Debt Instrument [Line Items]
Senior Notes reclassified as current liability				$ 25.0
8.875% Senior Notes
Debt Instrument [Line Items]
Interest accrued by public notes for each year				8.875%
Maturity of public notes due				Dec. 01, 2017
Discount on notes				$ 0.3
Interest payment frequency				Semi-annual interest payments on June 1 and December 1 of each year
Interest on senior notes				8.875%	8.875%
Outstanding senior notes				$ 125.0
Subsequent Event \| 8.875% Senior Notes
Debt Instrument [Line Items]
Interest on senior notes		8.875%	8.875%
Outstanding senior notes		$ 125.0	$ 125.0
Call price percentage		104.438%	104.438%
Subsequent Event \| 8.875% Senior Notes \| Third Amendment
Debt Instrument [Line Items]
Interest on senior notes	8.875%
Outstanding senior notes	$ 125.0
Call price percentage	104.438%