Goodwill And Intangible Assets (Components Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 29, 2014	Sep. 28, 2013
Customer-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	10 years
Gross Carrying Amount	$ 193,885	$ 193,744
Accumulated Amortization	(105,568)	(97,347)
Program-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	18 years
Gross Carrying Amount	81,653	79,607
Accumulated Amortization	(22,068)	(18,988)
Technology-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	9 years
Gross Carrying Amount	76,672	76,558
Accumulated Amortization	(44,671)	(42,000)
Marketing-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	10 years
Gross Carrying Amount	26,958	33,259
Accumulated Amortization	(13,485)	(18,476)
Finite-Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	12 years
Gross Carrying Amount	379,168	383,168
Accumulated Amortization	$ (185,792)	$ (176,811)