Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Apr. 04, 2015	Sep. 30, 2014
Goodwill [Line Items]
Goodwill	$ 984,953us-gaap_Goodwill	$ 1,012,527us-gaap_Goodwill
Goodwill, Acquired During Period	(180)us-gaap_GoodwillAcquiredDuringPeriod
Goodwill, Translation and Purchase Accounting Adjustments	(27,394)
Segment, Software Products [Member]
Goodwill [Line Items]
Goodwill	932,425	959,768
Goodwill, Translation and Purchase Accounting Adjustments	(27,163)
Segment, Services [Member]
Goodwill [Line Items]
Goodwill	52,528	52,759
Goodwill, Acquired During Period	0
Goodwill, Translation and Purchase Accounting Adjustments	$ (231)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

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