Goodwill And Intangible Assets (Schedule Of Intangible Assets Subject To Amortization) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Oct. 01, 2010
Amortized intangible assets, Gross Carrying Amount	$ 132,066	$ 41,626
Amortized intangible assets, Accumulated Amortization	(49,127)	(32,386)
Amortized intangible assets, Net Carrying Amount	82,939	9,240
Total intangible assets, Gross Carrying Amount	135,935	44,895
Total intangible assets, Accumulated Amortization	(49,127)	(32,386)
Total intangible assets, Net Carrying Amount	86,808	12,509
Trademarks [Member]
Indefinite-Lived Trademarks	3,869	3,269
Nonamortizing intangible assets, Gross Carrying Amount	3,869	3,269
Total intangible assets, Accumulated Amortization	0	0
Developed Technology [Member]
Amortized intangible assets, Weighted Average Amortization Period Remaining (Years)	1.9
Amortized intangible assets, Gross Carrying Amount	20,660	14,150
Amortized intangible assets, Accumulated Amortization	(13,751)	(10,862)
Amortized intangible assets, Net Carrying Amount	6,909	3,288
Customer Relationships [Member]
Amortized intangible assets, Weighted Average Amortization Period Remaining (Years)	3.6
Amortized intangible assets, Gross Carrying Amount	57,510	21,510
Amortized intangible assets, Accumulated Amortization	(21,828)	(15,894)
Amortized intangible assets, Net Carrying Amount	35,682	5,616
Patents and Other [Member]
Amortized intangible assets, Weighted Average Amortization Period Remaining (Years)	4.0
Amortized intangible assets, Gross Carrying Amount	53,896	5,966
Amortized intangible assets, Accumulated Amortization	(13,548)	(5,630)
Amortized intangible assets, Net Carrying Amount	$ 40,348	$ 336