Commitments and Contingencies - Schedule Of non-cancelable purchase commitments related to raw materials - (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2022	$ 51,470
2023	28,318
Total non-cancelable purchase commitments with significant manufacturing partners	$ 79,788

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