Balance Sheet Components - Components of Inventories (Detail) - USD ($) $ in Thousands	Jul. 03, 2015	Sep. 26, 2014
Balance Sheet Components [Abstract]
Raw materials and parts	$ 357,000	$ 296,100
Work-in-process	91,400	124,500
Finished goods	191,700	151,700
Total inventories	$ 640,101	$ 572,261	[1]

[1] The condensed consolidated balance sheet as of September 26, 2014 was derived from audited financial statements as of that date, but does not include all disclosures required by accounting principles generally accepted in the United States of America.