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Long-Term Debt, Exclusive of Current Installments (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Apr. 30, 2016
May. 02, 2015
Jan. 30, 2016
Debt Instrument [Line Items]      
Debt issuance cost $ (8,625) $ (10,331) $ (9,051)
Long-term debt 1,615,477 1,613,581 1,615,003
6.95% Ten-Year Notes      
Debt Instrument [Line Items]      
Long-term debt 374,795 374,724 374,777
2.50% Ten-Year Notes      
Debt Instrument [Line Items]      
Long-term debt 499,688 499,644 499,677
2.75% Seven-Year Notes      
Debt Instrument [Line Items]      
Long-term debt $ 749,619 $ 749,544 $ 749,600