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Foreign Currency Forward Contracts Outstanding (Detail) (Foreign Exchange Contract, USD $) In Thousands, unless otherwise specified	Aug. 03, 2014		Aug. 04, 2013
Derivatives designated as hedging instruments | Cash Flow Hedging | Canada, Dollars
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Exchange of foreign currency contracts	$ 24,400		$ 19,400
Not Designated as Hedging Instrument | Canada, Dollars
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Exchange of foreign currency contracts	0	[1]	3,800	[1]
Not Designated as Hedging Instrument | Australia, Dollars
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Exchange of foreign currency contracts	$ 10,410		$ 5,000
[1] These contracts are no longer designated as cash flow hedges as the related inventory purchases have occurred.

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration