Related Party Transactions - Additional Information (Detail) - Hitachi Ltd - USD ($) shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Dec. 26, 2015	Jun. 27, 2015	Jul. 01, 2017	Jul. 02, 2016
Related Party Transaction [Line Items]
Number of shares sold by Hitachi (shares)	6.6
Percentage of outstanding common stock owned by related party (less than)			5.00%	5.00%
Sales to Hitachi		$ 3.6
Purchases from Hitachi		$ 15.7