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v3.25.3

Note 9 - Debt - Schedule of Long Term Debt (Details) (Parentheticals) $ in Millions | 9 Months Ended
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Sep. 30, 2025 USD ($)
Exit payment | $ 2

X
- Definition Represents the amount of exit fees paid in a period. + References No definition available. + Details
Name: | pbyi_DebtInstrumentExitPayment
Namespace Prefix: | pbyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration