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Fair Value of Financial Instruments , Maturities of Available-for-sale marketable securities (Details) (USD $)
In Millions, unless otherwise specified
Jun. 01, 2013
Jun. 02, 2012
Schedule of Available-for-sale Securities [Line Items]    
Unrealized Loss on Securities $ 0 $ 0
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis 2.7  
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 2.7  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 8.1  
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 8.1  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 0  
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 0  
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis 10.8  
Available-for-sale Securities, Debt Securities $ 10.8