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Fair Value of Financial Assets and Liabilities on a Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
May 03, 2014
Feb. 01, 2014
May 04, 2013
Level 1 | Executive Savings Plan Investments
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value measured on recurring basis, Assets $ 144,587 $ 131,049 $ 114,106
Level 2
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value measured on recurring basis, Assets 6,661 19,482 2,910
Fair value measured on recurring basis, Liabilities 12,463 6,107 11,168
Level 2 | Diesel Fuel Contracts
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value measured on recurring basis, Assets 1,001 137  
Fair value measured on recurring basis, Liabilities     427
Level 2 | Short-Term Investments
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value measured on recurring basis, Assets $ 259,887 $ 294,702 $ 238,043