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Financial Instruments and Risk Management (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Sep. 27, 2014 Location State | Sep. 28, 2013 | Sep. 27, 2014 Customer Concentration Risk [Member] Revenues [Member] | Sep. 28, 2013 Customer Concentration Risk [Member] Revenues [Member] | Sep. 29, 2012 Customer Concentration Risk [Member] Revenues [Member] | Sep. 27, 2014 Supplier Concentration Risk [Member] Propane Purchases [Member] | Sep. 27, 2014 Supplier Concentration Risk [Member] Propane Purchases [Member] Crestwood Midstream Partners L.P [Member] | Sep. 27, 2014 Supplier Concentration Risk [Member] Propane Purchases [Member] Targa Liquids Marketing and Trade [Member] | Sep. 27, 2014 Supplier Concentration Risk [Member] Propane Purchases [Member] Enterprise Products Partners L.P. [Member] | Sep. 27, 2014 Minimum [Member] | Sep. 27, 2014 Maximum [Member] | Sep. 27, 2014 Commodity-Related Derivatives [Member] | Sep. 28, 2013 Commodity-Related Derivatives [Member] | Sep. 27, 2014 Interest Rate Swaps [Member] | Sep. 28, 2013 Interest Rate Swaps [Member] | Sep. 27, 2014 Derivatives Not Designated as Hedging Instruments [Member] | Sep. 28, 2013 Derivatives Not Designated as Hedging Instruments [Member] | Sep. 27, 2014 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] | Sep. 28, 2013 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] | Sep. 27, 2014 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Current Assets [Member] | Sep. 28, 2013 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Current Assets [Member] | Sep. 27, 2014 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Assets [Member] | Sep. 28, 2013 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Assets [Member] | Sep. 27, 2014 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Current Liabilities [Member] | Sep. 28, 2013 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Current Liabilities [Member] | Sep. 27, 2014 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Liabilities [Member] | Sep. 28, 2013 Derivatives Not Designated as Hedging Instruments [Member] Commodity-Related Derivatives [Member] Other Liabilities [Member] | Sep. 27, 2014 Derivatives Designated as Hedging Instruments [Member] Interest Rate Swaps [Member] | Sep. 28, 2013 Derivatives Designated as Hedging Instruments [Member] Interest Rate Swaps [Member] | Sep. 27, 2014 Derivatives Designated as Hedging Instruments [Member] Interest Rate Swaps [Member] Other Current Liabilities [Member] | Sep. 28, 2013 Derivatives Designated as Hedging Instruments [Member] Interest Rate Swaps [Member] Other Current Liabilities [Member] | Sep. 27, 2014 Derivatives Designated as Hedging Instruments [Member] Interest Rate Swaps [Member] Other Liabilities [Member] | Sep. 28, 2013 Derivatives Designated as Hedging Instruments [Member] Interest Rate Swaps [Member] Other Liabilities [Member]
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value - assets | $ 11,672 | $ 6,438 |  |  |  |  |  |  |  |  |  | $ 9,533 | $ 3,634 | $ 2,139 | $ 2,804 | $ 3,986 | $ 3,262 |  |  | $ 3,924 | $ 2,546 | $ 62 | $ 716 |  |  |  |  |  |  |  |  |  |
Fair value - liabilities | 10,806 | 6,034 |  |  |  |  |  |  |  |  |  | 7,127 | 802 | 3,679 | 5,232 |  |  | 1,580 | 430 |  |  |  |  | 1,527 | 430 | 53 | 0 | 1,540 | 2,428 | 1,257 | 1,307 | 283 | 1,121
Weighted average maturity of outstanding commodity-related derivatives |  |  |  |  |  |  |  |  |  | 4 months | 5 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of beginning and ending balances of assets measured at fair value on recurring basis using significant unobservable inputs [Rollforward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance of over-the-counter options | 1,847 | 5,002 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance realized during the period | (1,166) | (4,400) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contracts purchased during the period | 1,145 | 1,825 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in the fair value of outstanding contracts | (314) | (580) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance of over-the-counter options | 1,512 | 1,847 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of beginning and ending balances of liabilities measured at fair value on recurring basis using significant unobservable inputs [Rollforward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance of over-the-counter options | 0 | 1,209 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance realized during the period | 0 | (1,182) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contracts purchased during the period | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in the fair value of outstanding contracts | 0 | (27) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance of over-the-counter options | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentrations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of locations served by the Partnership | 710 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of states which the Partnership operates | 41 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum concentration risk threshold accounted for by a single customer or supplier (in hundredths) |  |  | 10.00% | 10.00% | 10.00% | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration percentage of propane supply provided by suppliers (in hundredths) |  |  |  |  |  |  | 19.00% | 13.00% | 13.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
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- Definition Minimum concentration threshold accounted for by a single entity or an aggregate of entities expressed as a percentage as of the balance sheet date. The threshold serves as a benchmark which may include, but not limited to, customers, suppliers, geography or any other designation. + References No definition available. + Details
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