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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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- Definition 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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition 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. + Details
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- Definition 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 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=6905858&loc=d3e16265-109275 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 35 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6904245&loc=d3e15217-109273 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6904245&loc=d3e15300-109273 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6904245&loc=d3e15211-109273 + Details
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