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Commitments and Contingencies - Schedule of Product Warranty Liability (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Aug. 30, 2014
Aug. 31, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]    
Accrual Balance — beginning $ 25.2 $ 24.8
Accrual for warranty matters 6.5 4.9
Settlements and adjustments 6.0 5.1
Accrual Balance — ending $ 25.7 $ 24.6