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Receivables (Detail) (USD $)
In Thousands, unless otherwise specified
Apr. 27, 2013
Jan. 26, 2013
Oct. 27, 2012
Jul. 28, 2012
Apr. 28, 2012
Jan. 28, 2012
Oct. 29, 2011
Jul. 30, 2011
Apr. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Trade accounts $ 69,627       $ 91,476        
Credit/debit card receivables 33,776       36,042        
Other receivables 45,966       42,429        
Total receivables, net $ 149,369 $ 396,169 $ 233,502 $ 153,500 $ 169,947 $ 396,854 $ 240,600 $ 156,543 $ 150,294