Commitments and Contingencies - Schedule Of non-cancelable purchase commitments related to raw materials - (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2022	$ 40,156
2023	40,837
Total non-cancelable purchase commitments due to our key manufacturing partners	$ 80,993

Non cancelable Purchase Commitments Due Within One Year

No definition available.

Name:	pcvx_NonCancelablePurchaseCommitmentsDueWithinOneYear
Namespace Prefix:	pcvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant