Goodwill And Intangible Assets (Components Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Apr. 04, 2015	Sep. 27, 2014
Customer-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	11 years
Gross Carrying Amount	$ 173,520	$ 180,670
Accumulated Amortization	(104,965)	(102,251)
Program-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	18 years
Gross Carrying Amount	74,684	80,054
Accumulated Amortization	(24,673)	(24,065)
Technology-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	9 years
Gross Carrying Amount	73,963	76,057
Accumulated Amortization	(47,283)	(46,296)
Marketing-Related [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	10 years
Gross Carrying Amount	25,925	26,707
Accumulated Amortization	(15,541)	(14,779)
Finite-Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life (years)	12 years
Gross Carrying Amount	348,092	363,488
Accumulated Amortization	$ (192,462)	$ (187,391)

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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