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Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 03, 2014	May 04, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Realized gains/losses on derivative	$ 7.2	$ 10.6
Diesel Fuel Contracts for First Nine Months of Fiscal 2015
Derivative Instruments, Gain (Loss) [Line Items]
Hedge of diesel fuel requirement	49.00%

X

- Definition

Hedge diesel fuel requirement

+ References

No definition available.

+ Details

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X

- Details

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X

- Definition

The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13(h))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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