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Summary of Amounts Recognized in Balance Sheet (Detail) (USD $)
In Millions, unless otherwise specified
Feb. 01, 2014
Feb. 02, 2013
Amounts recognized in the balance sheet consist of:    
Non-current assets $ 56.3 $ 48.5
UK Plan
   
Amounts recognized in the balance sheet consist of:    
Non-current assets 56.3 48.5
Non-current liabilities      
Net asset recognized $ 56.3 $ 48.5