Goodwill And Intangible Assets (Components Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Sep. 29, 2012
Customer-Related [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	10 years
Gross Carrying Amount	$ 180,845	$ 179,383
Accumulated Amortization	(85,528)	(80,953)
Program-Related [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	18 years
Gross Carrying Amount	79,679	79,631
Accumulated Amortization	(15,230)	(13,976)
Technology-Related [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	9 years
Gross Carrying Amount	68,138	67,969
Accumulated Amortization	(37,393)	(35,676)
Marketing-Related [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	9 years
Gross Carrying Amount	29,388	29,327
Accumulated Amortization	(16,737)	(16,145)
Acquired Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	12 years
Gross Carrying Amount	358,050	356,310
Accumulated Amortization	$ (154,888)	$ (146,750)