Schedule of Taxes on Earnings (Detail) (USD $)	12 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 28, 2012
Income Tax Disclosure [Abstract]
Current Provision, Federal	$ 86,600,000	$ 110,100,000	$ 99,300,000
Current Provision, State and Local	6,100,000	13,400,000	8,500,000
Current Provision, Foreign	62,200,000	54,300,000	63,500,000
Total Current Provision	154,900,000	177,800,000	171,300,000
Deferred Provision (Benefit), Federal	5,000,000	(3,900,000)	(4,500,000)
Deferred Provision (Benefit), State and Local	(100,000)	(200,000)	100,000
Deferred Provision (Benefit), Foreign	11,000,000	100,000	2,000,000
Total Deferred Provision (Benefit)	15,872,000	(3,946,000)	(2,349,000)
Taxes on earnings	$ 170,807,000	$ 173,835,000	$ 168,875,000