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Performance Share Unit Activity (Detail) - Stock Plan 2010 and 2017 - Performance Share Units - $ / shares
3 Months Ended
Sep. 28, 2018
Sep. 29, 2017
Number of performance share units    
Number of share units, Beginning Balance 605,892 227,268
Number of share units, Granted 201,994 281,318
Number of share units, Issued (227,268)  
Number of share units, Forfeited (27,954)  
Number of share units, Ending Balance 552,664 508,586
Weighted Average Grant Date Fair Value Per Share    
Weighted-average grant date fair value per share, Beginning Balance $ 38.41 $ 40.48
Weighted-average grant date fair value per share, Granted 48.02 39.95
Weighted-average grant date fair value per share, Issued 40.48  
Weighted-average grant date fair value per share, Forfeited 39.35  
Weighted-average grant date fair value per share, Ending Balance $ 41.02 $ 39.86