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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Aug. 30, 2014
Aug. 31, 2013
Income Tax Disclosure [Abstract]    
Effective Income Tax Rate, Continuing Operations 33.00% 34.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00%  
Liability for Uncertain Tax Positions, Current $ 1.3 $ 1.3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 0.5 $ 0.5