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Commitments and Contingencies (Details)
£ in Millions, $ in Millions
3 Months Ended 9 Months Ended
Apr. 01, 2017
USD ($)
Apr. 02, 2016
USD ($)
Apr. 01, 2017
USD ($)
Apr. 02, 2016
USD ($)
Jul. 02, 2016
USD ($)
Jul. 02, 2016
GBP (£)
Loss Contingencies [Line Items]            
Guarantee liabilities $ 0.0   $ 0.0   $ 0.0  
Product Warranties            
Warranty Term for most products     3 years      
Changes in warranty reserve            
Balance as of beginning of period 5.3 $ 4.3 $ 4.9 $ 3.7    
Provision for warranty 1.3 0.8 4.5 2.5    
Utilization of reserve (0.8) (0.8) (2.8) (2.3)    
Adjustments related to pre-existing warranties (including changes in estimates) (0.3) 0.2 (1.1) 0.6    
Balance as of end of period $ 5.5 $ 4.5 $ 5.5 $ 4.5    
Judicial ruling | Case related to amendment of pension for foreign subsidiary            
Loss Contingencies [Line Items]            
Loss contingency accrual | £           £ 5.7