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Balance Sheet and Other Details - Accounts Receivable Reserves and Allowances (Details) - USD ($)
$ in Millions
 12 Months Ended
Jul. 01, 2017
Jul. 02, 2016
Jun. 27, 2015
Allowance for doubtful accounts      
Accounts receivable reserves and allowances      
Total accounts receivable reserves and allowances $ 2.2 $ 2.4 $ 2.9
Activities and balances for allowance for doubtful accounts and allowance for sales returns      
Balance at Beginning of Period 2.2 2.4 2.9
Charged to Costs and Expenses (0.2) 0.3 0.3
Deduction (0.4) (0.5) (0.8)
Balance at End of Period 1.6 2.2 $ 2.4
Sales allowance      
Accounts receivable reserves and allowances      
Total accounts receivable reserves and allowances 2.5 2.5  
Activities and balances for allowance for doubtful accounts and allowance for sales returns      
Balance at Beginning of Period 2.5    
Balance at End of Period 3.4 2.5  
Total accounts receivable reserves and allowances      
Accounts receivable reserves and allowances      
Total accounts receivable reserves and allowances 4.7 4.7  
Activities and balances for allowance for doubtful accounts and allowance for sales returns      
Balance at Beginning of Period 4.7    
Balance at End of Period $ 5.0 $ 4.7