General and administrative expenses - Additional Information (Detail) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure Of Detailed Information General And Administrative Expenses [Abstract]
Depreciation expenses related to property, plant and equipment and short-term leases	€ 400	€ 100	€ 60

Disclosure of detailed information general and administrative expenses.

No definition available.

Name:	phvs_DisclosureOfDetailedInformationGeneralAndAdministrativeExpensesAbstract
Namespace Prefix:	phvs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration