Basis of Presentation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014
License and subscription solutions	$ 85,952us-gaap_LicensesRevenue	$ 88,545us-gaap_LicensesRevenue	$ 164,923us-gaap_LicensesRevenue	$ 171,411us-gaap_LicensesRevenue
Professional services	59,440us-gaap_SalesRevenueServicesNet	73,906us-gaap_SalesRevenueServicesNet	124,282us-gaap_SalesRevenueServicesNet	145,823us-gaap_SalesRevenueServicesNet
Support	168,727us-gaap_MaintenanceRevenue	166,249us-gaap_MaintenanceRevenue	350,356us-gaap_MaintenanceRevenue	336,391us-gaap_MaintenanceRevenue
Total revenue	314,119us-gaap_SalesRevenueNet	328,700us-gaap_SalesRevenueNet	639,561us-gaap_SalesRevenueNet	653,625us-gaap_SalesRevenueNet
Cost of license and subscription solutions revenue	13,190us-gaap_LicenseCosts	10,889us-gaap_LicenseCosts	26,519us-gaap_LicenseCosts	21,208us-gaap_LicenseCosts
Cost of professional services revenue	51,536us-gaap_CostOfServices	61,344us-gaap_CostOfServices	109,753us-gaap_CostOfServices	124,065us-gaap_CostOfServices
Reclassification Adjustment
License and subscription solutions		3,400		7,000
Professional services		(3,300)		(6,900)
Support		(100)		(100)
Total revenue		(3,400)		(7,000)
Cost of professional services revenue		(2,800)		(5,600)
Reclassification Adjustment \| From Services to L&SS
License and subscription solutions		3,300		6,900
Cost of license and subscription solutions revenue		2,800		5,600
Reclassification Adjustment \| From Support to L&SS
License and subscription solutions		$ 100		$ 100

Total costs related to services rendered by an entity during the reporting period.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 2

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Balance Type:	debit
Period Type:	duration

- Definition

Costs incurred and are directly related to generating license revenue. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark.

+ References

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Balance Type:	debit
Period Type:	duration

- Definition

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

+ References

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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- Definition

Revenue derived from maintenance services provided under contracts or arrangements with clients. For example, it may include the maintenance of software, plant and equipment, and facilities.

+ References

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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Period Type:	duration

- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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