Schedule of Repurchases under Repurchase Program (Detail) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2015		Dec. 28, 2014		Sep. 28, 2014		Jun. 29, 2014
Stock Repurchase Program [Line Items]
Total Number of Shares Repurchased	1,434		869		3,818
Total Cost of Repurchase	$ 112,477,000		$ 45,694,000		$ 296,721,000
Average Price Paid Per Share	$ 78.45	[1]	$ 77.31	[1]	$ 70.01	[1]
Amount Available Under Repurchase Program	$ 376,002,000		$ 488,480,000		$ 534,174,000		$ 830,895,000

[1] Average price paid per share excludes accelerated share repurchases for which cost was incurred during the September 2014 quarter, but that did not settle until the December 2014 quarter. See section below for details regarding average price associated with these transactions.