Computation of Net Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Earnings Per Share Basic And Diluted [Line Items]
Net earnings	$ 112,831	$ 108,843	$ 320,902	$ 306,848
Weighted average shares outstanding – basic	108,158	111,070	108,741	111,857
Dilutive effect of potential common shares	1,602	1,753	1,755	2,104
Weighted average shares outstanding – diluted	109,760	112,823	110,496	113,961
Net earnings per share – basic	$ 1.04	$ 0.98	$ 2.95	$ 2.74
Net earnings per share – diluted	$ 1.03	$ 0.96	$ 2.90	$ 2.69
Anti-dilutive employee shared based awards, excluded	737	560	739	251