Significant Accounting Policies (Schedule Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2011	Oct. 01, 2010	Oct. 02, 2009
Acquired intangible assets beginning balance	$ 100,045	$ 57,459	$ 59,903
Acquisitions	183,798	54,100	7,738
Amortization	(24,701)	(11,206)	(8,720)
Foreign currency translation	(136)	(308)	(1,462)
Acquired intangible assets ending balance	259,006	100,045	57,459
Customer Relationship, Contracts And Backlog [Member]
Acquired intangible assets beginning balance	95,478	53,675	54,250
Acquisitions	155,512	50,600	7,173
Amortization	(21,239)	(8,619)	(6,416)
Foreign currency translation	(13)	(178)	(1,332)
Acquired intangible assets ending balance	229,738	95,478	53,675
Estimated remaining useful life (years), minimum	1
Estimated remaining useful life (years), maximum	14
Developed Technology Rights [Member]
Acquired intangible assets beginning balance
Acquisitions	23,000
Amortization	(1,023)
Foreign currency translation
Acquired intangible assets ending balance	21,977
Estimated remaining useful lives (years)	15
Trade Names [Member]
Acquired intangible assets beginning balance	2,052	1,508	2,789
Acquisitions	2,744	2,400	478
Amortization	(1,214)	(1,851)	(1,674)
Foreign currency translation	(109)	(5)	(85)
Acquired intangible assets ending balance	3,473	2,052	1,508
Estimated remaining useful life (years), minimum	1
Estimated remaining useful life (years), maximum	20
Other [Member]
Acquired intangible assets beginning balance	2,515	2,276	2,864
Acquisitions	2,542	1,100	87
Amortization	(1,225)	(736)	(630)
Foreign currency translation	(14)	(125)	(45)
Acquired intangible assets ending balance	$ 3,818	$ 2,515	$ 2,276
Estimated remaining useful life (years), minimum	1
Estimated remaining useful life (years), maximum	8

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Acquired Finite Lived Intangible Asset Foreign Currency Translation

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The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The aggregate expense charged against earnings to allocate the cost of acquired intangible assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method.

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The average useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

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The maximum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

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