Segment Information - Geographic Information (Detail) - USD ($) $ in Thousands	3 Months Ended							9 Months Ended	12 Months Ended
	Oct. 02, 2015	Apr. 03, 2015	Jan. 02, 2015	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 27, 2013	Jul. 03, 2015	Oct. 02, 2015	Sep. 26, 2014	Sep. 27, 2013
Segment Reporting Information [Line Items]
Revenues	$ 817,800	$ 759,400	$ 737,900	$ 812,100	$ 747,700	$ 778,500	$ 711,500	$ 784,000	$ 3,099,111	$ 3,049,800	$ 2,942,897
Property, plant and equipment, net	379,215			337,999					379,215	337,999	315,300
United States
Segment Reporting Information [Line Items]
Revenues									1,418,300	1,290,100	1,241,200
Property, plant and equipment, net	292,600			262,700					292,600	262,700	237,800
International
Segment Reporting Information [Line Items]
Revenues									1,680,800	1,759,700	1,701,700
Property, plant and equipment, net	$ 86,600			$ 75,300					$ 86,600	$ 75,300	$ 77,500