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Stock-Based Compensation - Stock-Based Compensation by Function (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Jul. 02, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 30.5 $ 33.2 $ 42.4
Cost of revenue      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 3.3 3.6 4.8
Research and development      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 4.9 5.7 8.4
Selling, general and administrative      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 22.3 $ 23.9 $ 29.2