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Derivative Financial Instruments (Effect Of Interest Rate And Foreign Currency Contracts On The Consolidated Statements Of Income) (Details) (Other Income (Expense) [Member], USD $)
In Millions
3 Months Ended
Jul. 30, 2011
Jul. 31, 2010
Interest Rate Contracts [Member]
   
Other income (expense), net $ 0 $ 0
Foreign Currency Contracts [Member]
   
Other income (expense), net   $ 0.1