Financial Instruments and Risk Management - Effect of the Partnership's Derivative Instruments on the Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 26, 2015	Sep. 27, 2014	Sep. 28, 2013
Interest Rate Swaps [Member] \| Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gains (Losses) Recognized in OCI (Effective Portion)	$ (1,159)	$ (518)	$ 584
Interest Rate Swaps [Member] \| Derivatives Designated as Hedging Instruments [Member] \| Interest Expense [Member]
Derivative Instruments Gain Loss [Line Items]
Gains (Losses) Reclassified from Accumulated OCI into Income (Effective Portion)	(1,388)	(1,406)	(2,465)
Commodity-Related Derivatives [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Cost of Products Sold [Member]
Derivative Instruments Gain Loss [Line Items]
Unrealized Gains (Losses) Recognized in Income	$ 1,855	$ 306	$ (4,318)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

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-Subparagraph (a),(c),(d),(e)

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

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-Section 50

-Paragraph 4D

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-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624177-113959

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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