Quarterly Financial Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Sep. 28, 2012		Jun. 29, 2012		Mar. 30, 2012		Dec. 30, 2011		Sep. 30, 2011		Jul. 01, 2011		Apr. 01, 2011		Dec. 31, 2010		Sep. 28, 2012		Sep. 30, 2011		Oct. 01, 2010
Selected Quarterly Financial Information [Abstract]
Revenue, Net	$ 421,113		$ 389,038		$ 364,690		$ 393,740		$ 402,316		$ 356,075		$ 325,411		$ 335,120		$ 1,568,581		$ 1,418,922		$ 1,071,849
Gross Profit	177,673		165,302		152,272		171,850		174,560		156,225		140,981		148,538		667,097		620,304		456,833
Net Income	$ 61,602		$ 49,317		$ 34,033		$ 57,126		$ 64,209		$ 51,548		$ 49,960		$ 60,868		$ 202,078		$ 226,585		$ 137,294
Earnings Per Share, Basic (in dollars per share)	$ 0.33	[1]	$ 0.26	[1]	$ 0.18	[1]	$ 0.31	[1]	$ 0.35	[1]	$ 0.28	[1]	$ 0.27	[1]	$ 0.34	[1]	$ 1.09	[1]	$ 1.24	[1]	$ 0.78
Earnings Per Share, Diluted (in dollars per share)	$ 0.32	[1]	$ 0.26	[1]	$ 0.18	[1]	$ 0.30	[1]	$ 0.34	[1]	$ 0.27	[1]	$ 0.26	[1]	$ 0.32	[1]	$ 1.05	[1]	$ 1.19	[1]	$ 0.75

[1] Earnings per share calculations for each of the quarters are based on the weighted average number of shares outstanding and included common stock equivalents in each period. Therefore, the sums of the quarters do not necessarily equal the full year earnings per share.