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Organization and Summary of Significant Accounting Policies - Schedule of Goodwill (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Goodwill And Intangible Assets Disclosure [Abstract]    
Beginning balance $ 61.0 $ 20.7
Acquisition activity 153.4 39.0
Post acquisition adjustments (7.6) 1.3
Ending balance $ 206.8 $ 61.0