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Restricted Share Unit Activity (Detail) - Stock Plan 2010 and 2017 - Restricted Share Units - $ / shares
3 Months Ended
Sep. 28, 2018
Sep. 29, 2017
Number of restricted share units    
Number of share units, Beginning Balance 1,073,580 1,058,605
Number of share units, Granted 255,821 321,405
Number of share units, Issued (369,757) (259,033)
Number of share units, Forfeited (29,845) (12,967)
Number of share units, Ending Balance 929,799 1,108,010
Weighted Average Grant Date Fair Value Per Share    
Weighted-average grant date fair value per share, Beginning Balance $ 35.19 $ 31.59
Weighted-average grant date fair value per share, Granted 48.02 39.35
Weighted-average grant date fair value per share, Issued 34.34 26.17
Weighted-average grant date fair value per share, Forfeited 38.32 35.33
Weighted-average grant date fair value per share, Ending Balance $ 38.95 $ 35.07