Goodwill And Intangible Assets (Components Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (190,954)	$ (180,586)
Customer-Related [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (Years)	11 years
Gross Carrying Amount	180,670	193,744
Accumulated Amortization	(102,251)	(97,347)
Program-Related [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (Years)	18 years
Gross Carrying Amount	80,054	79,607
Accumulated Amortization	(24,065)	(18,988)
Technology-Based Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (Years)	9 years
Gross Carrying Amount	76,057	76,558
Accumulated Amortization	(46,296)	(42,000)
Marketing-Related Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (Years)	10 years
Gross Carrying Amount	26,707	33,259
Accumulated Amortization	(14,779)	(18,476)
Acquired Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (Years)	12 years
Gross Carrying Amount	363,488	383,168
Accumulated Amortization	$ (187,391)	$ (176,811)