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Significant Accounting and Reporting Policies (Details)
£ in Millions, $ in Millions
 12 Months Ended
May 28, 2016
USD ($)
May 30, 2015
USD ($)
May 31, 2014
USD ($)
May 28, 2016
GBP (£)
Nov. 28, 2015
USD ($)
May 30, 2015
GBP (£)
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
Accrued warranty $ 43.9 $ 39.3        
Other assets 33.3 39.1        
Retained earnings $ 435.3 $ 330.2        
Number of Weeks in Fiscal Year 364 days 364 days 364 days      
Foreign Currency Transaction Gain (Loss), before Tax $ 0.7 $ 2.1 $ 1.2      
Cash Equivalents, at Carrying Value 7.5 9.1        
Long-term Purchase Commitment, Amount 14.0          
Indefinite-lived intangibles 85.2 85.2 40.9      
Impairment charges 0.0 10.8 21.4      
Impairment of Long-Lived Assets Held-for-use   4.0 4.0      
Proceeds from Sale of Land Held-for-use 4.2          
Liability for Unpaid Claims and Claims Adjustment Expense, Net 10.6 9.5        
Research and Development Expense 62.4 56.7 53.9      
Royalty Expense 14.7 14.7 $ 12.0      
Derivative Liability, Notional Amount $ 64.3 $ 34.7        
Derivative Asset, Notional Amount | £       £ 31.2   £ 18.0
Adjustments to Correct Product Warranty Accruals | Restatement Adjustment            
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
Accrued warranty         $ 12.5  
Other assets         4.7  
Retained earnings         $ 7.8  
Not Designated as Hedging Instrument | Foreign Exchange Forward            
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
Derivative, Term of Contract 30 days