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Financial Instruments - Additional Information (Detail)	6 Months Ended
	Aug. 01, 2015
Diesel Fuel Contracts Remainder of Fiscal Year Twenty Sixteen
Derivative Instruments, Gain (Loss) [Line Items]
Hedge of diesel fuel requirement	56.00%
Diesel Fuel Contracts, First Six Months Of Fiscal Year Two Thousand Seventeen
Derivative Instruments, Gain (Loss) [Line Items]
Hedge of diesel fuel requirement	40.00%

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- Definition

Hedge diesel fuel requirement

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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