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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Nov. 30, 2013
Dec. 01, 2012
Nov. 30, 2013
Dec. 01, 2012
Income Tax Disclosure [Abstract]        
Effective Income Tax Rate, Continuing Operations 37.60% 34.90% 38.70% 33.90%
Liability for Uncertain Tax Positions, Current $ 1.4 $ 1.5 $ 1.4 $ 1.5
Income Tax Examination, Penalties and Interest Accrued $ 0.6 $ 0.6 $ 0.6 $ 0.6