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Income Taxes - Additional Information (Details) $ in Millions | 9 Months Ended
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Jun. 30, 2024 USD ($)
Income Tax Disclosure [Line Items] |
Non-cash tax expense related to the excess tax benefits | $ 3.6

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- Definition Income tax disclosure [Line Items] + References No definition available. + Details
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Namespace Prefix: | ptc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The portion of the noncash component of income tax expense for the period other than the portion from the net change in the entity's deferred tax assets and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_OtherNoncashIncomeTaxExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration