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Share-Based Compensation - Cash Received and Aggregate Intrinsic Value of Stock Options Exercised (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Jun. 29, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Cash received $ 36.2 $ 71.7 $ 30.8
Aggregate intrinsic value $ 69.9 $ 79.3 $ 23.6