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Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Parenthetical) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 28, 2020
Leases [Abstract] |  |
Change in operating right -of-use assets | $ 10.8 | $ (1.3)
Right-of-use assets obtained through acquisitions | $ 1.3 |

X
- Definition Operating right of use asset obtained through acquisitions. + References No definition available. + Details
Name: | ptc_OperatingRightOfUseAssetObtainedThroughAcquisitions
Namespace Prefix: | ptc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Operating right of use​ asset other changes increase (decrease). + References No definition available. + Details
Name: | ptc_OperatingRightOfUseAssetOtherChanges
Namespace Prefix: | ptc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration