Schedule of Repurchases under Repurchase Program (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 27, 2016	Sep. 27, 2015	Dec. 27, 2015	Jun. 28, 2015
Equity [Abstract]
Total Number of Shares Repurchased (in shares)		1,205	0
Total Cost of Repurchase	$ 0	$ 87,493	$ 0
Average Price Paid Per Share (in dollars per share)	$ 0.00	$ 72.61	$ 0.00
Amount Available Under Repurchase Program	$ 229,094	$ 229,094	$ 229,094	$ 316,587