Activity Under Employee Stock Plans (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 30, 2011
Number of Shares
Number of Shares, Options Outstanding	6,459	6,917	10,174
Number of Shares, Granted	613	743	48
Number of Shares, Canceled, expired or forfeited	(20)	(30)	(46)
Number of Shares, Exercised	(2,567)	(1,171)	(3,259)
Number of Shares, Options Outstanding	4,485	6,459	6,917
Weighted Average Exercise Price
Weighted Average Exercise Price, Options Outstanding	$ 48.34	$ 45.90	$ 44.03
Weighted Average Exercise Price, Granted	$ 68.93	$ 58.50	$ 69.67
Weighted Average Exercise Price, Canceled, expired or forfeited	$ 60.81	$ 55.73	$ 48.64
Weighted Average Exercise Price, Exercised	$ 44.97	$ 40.18	$ 40.38
Weighted Average Exercise Price, Options Outstanding	$ 53.02	$ 48.34	$ 45.90
Shares Available for Grant
Shares Available for Grant, Beginning Balance	11,868	8,424	8,407
Shares Available for Grant, Authorized		6,000
Shares Available for Grant, Granted	(2,045)	(2,680)	(108)
Shares Available for Grant, Canceled, expired or forfeited	102	124	125
Shares Available for Grant, Ending Balance	9,925	11,868	8,424