v2.4.1.9

Goodwill and Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 03, 2015	Sep. 30, 2014
Goodwill, Acquired During Period	$ (180)us-gaap_GoodwillAcquiredDuringPeriod
Acquired Intangible Assets Net Including Goodwill	1,320,013pmtc_AcquiredIntangibleAssetsNetIncludingGoodwill	1,349,400pmtc_AcquiredIntangibleAssetsNetIncludingGoodwill
Segment Software Products
Acquired Intangible Assets Net Including Goodwill	1,254,600pmtc_AcquiredIntangibleAssetsNetIncludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = pmtc_SegmentSoftwareProductsMember	1,283,000pmtc_AcquiredIntangibleAssetsNetIncludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = pmtc_SegmentSoftwareProductsMember
Segment Services
Goodwill, Acquired During Period	0us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pmtc_SegmentServicesMember
Acquired Intangible Assets Net Including Goodwill	$ 65,400pmtc_AcquiredIntangibleAssetsNetIncludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = pmtc_SegmentServicesMember	$ 66,400pmtc_AcquiredIntangibleAssetsNetIncludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = pmtc_SegmentServicesMember

X

- Definition

Acquired intangible assets net including goodwill

+ References

No definition available.

+ Details

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Namespace Prefix:	pmtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- 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

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pmtc_SegmentServicesMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pmtc_SegmentSoftwareProductsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: