Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Oct. 31, 2020
Registrant Name	dei_EntityRegistrantName	Pacer Funds Trust
Entity Central Index Key	dei_EntityCentralIndexKey	0001616668
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Oct. 15, 2021
Document Effective Date	dei_DocumentEffectiveDate	Dec. 17, 2021
Prospectus Date	rr_ProspectusDate	Dec. 23, 2020
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A