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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Sep. 30, 2023
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Commitments and Contingencies Disclosure [Abstract] |  |
Letters of credit and bank guarantees outstanding | $ 15.6 | $ 13.1
Bank guarantees outstanding collateralized | $ 0.6 | $ 0.5

X
- Definition Collateralized letters of credit outstanding + References No definition available. + Details
Name: | ptc_CollateralizedLettersOfCreditOutstanding
Namespace Prefix: | ptc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant