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Income Taxes - Schedule of Unrecognized Tax Benefits (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
May 31, 2014
Jun. 01, 2013
Jun. 02, 2012
Income Tax Disclosure [Abstract]      
Unrecognized tax benefits, beginning balance (in usd) $ 1.8 $ 1.4 $ 1.3
Increases related to current year income tax positions 0.5 0.4  
Increases related to prior year income tax positions 0 0  
Decreases related to prior year income tax positions 0 0.1  
Decreases related to lapse of applicable statute of limitations (0.1) (0.2)  
Decreases related to settlements 0 0  
Unrecognized tax benefits, ending balance (in usd) $ 1.8 $ 1.4 $ 1.3