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Net Income Per Share - Share-Based Awards, not Included in Calculation of Diluted Net Income Per Share (Detail) - shares
shares in Millions
12 Months Ended
Jun. 30, 2018
Jun. 24, 2017
Jun. 25, 2016
Share-Based Awards [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Share-based awards 2.3 1.4 0.7