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Share-Based Compensation - Shares Purchased, Weighted Average Purchase Price, Cash Received, and Aggregate Intrinsic Value for ESPP (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Jun. 29, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares purchased 367,646    
Aggregate intrinsic value $ 137.6    
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares purchased 367,646 409,084 327,465
Weighted average purchase price $ 35.11 $ 22.07 $ 20.36
Cash received $ 12.9 $ 9.0 $ 6.7
Aggregate intrinsic value $ 13.7 $ 12.8 $ 4.8