Goodwill And Intangible Assets (Schedule Of Company's Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
Apr. 28, 2012 years	Oct. 29, 2011 years
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 700,880	$ 700,880
Accumulated Amortization	540,716	486,183
Net Carrying Value	160,164	214,697
Weighted-Average Remaining Useful Life (in years)	1.50	2.08
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	10,441	10,441
Accumulated Amortization	10,430	10,422
Net Carrying Value	11	19
Weighted-Average Remaining Useful Life (in years)	0.67	1.17
Core/Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	337,858	337,858
Accumulated Amortization	270,658	245,855
Net Carrying Value	67,200	92,003
Weighted-Average Remaining Useful Life (in years)	1.46	2.04
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	352,581	352,581
Accumulated Amortization	259,628	229,906
Net Carrying Value	$ 92,953	$ 122,675
Weighted-Average Remaining Useful Life (in years)	1.52	2.12

The accumulated amount of amortization 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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2

-Subparagraph (a)(1)

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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

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- Definition

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) 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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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 42, 45

-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 2

-Subparagraph ((a)(1),(b))

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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