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Summary of Significant Accounting Policies (Details) | 12 Months Ended
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Sep. 27, 2014 WK Partnership | Sep. 28, 2013 | Sep. 29, 2012
Summary of Significant Accounting Policies [Abstract] |  |  |
Limited partner interest in the Operating Partnership (in hundredths) | 100.00% |  |
Minimum number of weeks in the fiscal year reporting calendar | 52 |  |
Maximum number of weeks in the fiscal year reporting calendar | 53 |  |
Minimum number of weeks in a fiscal quarter | 13 |  |
Maximum number of weeks in a fiscal quarter | 14 |  |
Goodwill [Abstract] |  |  |
Projection period of estimated cash flows | 10 years |  |
Interest Rate Risk [Abstract] |  |  |
Basis spread (in hundredths) | 1.00% |  |
Income Taxes [Abstract] |  |  |
Number of limited partnerships included in the partnership structure | 2 |  |
Net Income Per Unit [Abstract] |  |  |
Additional dilutive common units included in computation of diluted income per Common Unit (in units) | 269,867 | 222,419 | 141,570
Federal Funds Rate [Member] |  |  |
Interest Rate Risk [Abstract] |  |  |
Description of applicable interest rate on borrowings | Federal Funds Rate |  |
Basis spread (in hundredths) | 0.50% |  |
LIBOR [Member] |  |  |
Interest Rate Risk [Abstract] |  |  |
Description of applicable interest rate on borrowings | LIBOR |  |
Basis spread (in hundredths) | 1.00% |  |
Buildings [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 40 years |  |
Building and land improvements [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 20 years |  |
Transportation equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 3 years |  |
Transportation equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 20 years |  |
Storage facilities [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 7 years |  |
Storage facilities [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 40 years |  |
Storage facilities [Member] | Weighted Average [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 21 years |  |
Office equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 5 years |  |
Office equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 10 years |  |
Tanks and cylinders [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 10 years |  |
Tanks and cylinders [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 40 years |  |
Tanks and cylinders [Member] | Weighted Average [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 28 years |  |
Computer software [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 3 years |  |
Computer software [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life of the asset (in years) | 7 years |  |

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