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Taxation - Disclosure of tax balances as presented in statement of financial position (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Taxation [Line Items] |  |
Income tax receivable – current | $ 10,040 | $ 4,514
Trade and Other Payables | $ (57) | $ (57)

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- Definition Taxation + References No definition available. + Details
Name: | ptv_TaxationLineItems
Namespace Prefix: | ptv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Trade payables, income tax payable + References No definition available. + Details
Name: | ptv_TradePayablesIncomeTaxPayable
Namespace Prefix: | ptv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Trade receivables, income tax receivable + References No definition available. + Details
Name: | ptv_TradeReceivablesIncomeTaxReceivable
Namespace Prefix: | ptv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant