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. 29, 2012	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011
Schedule of Earnings Per Share, Basic and Diluted, by Common Class
Net earnings	$ 108,843	$ 98,605	$ 306,848	$ 298,173
Weighted average shares outstanding-basic	111,070	116,874	111,857	117,614
Dilutive effect of potential common shares	1,753	2,190	2,104	2,217
Weighted average shares outstanding-diluted	112,823	119,064	113,961	119,831
Net earnings per share-basic	$ 0.98	$ 0.84	$ 2.74	$ 2.54
Net earnings per share-diluted	$ 0.96	$ 0.83	$ 2.69	$ 2.49