Commitments and Contingencies - Environmental (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Environmental insurance coverage claims per occurrence	$ 10.0
Environmental insurance coverage claims aggregate	$ 10.0

Claims Exposure Protection Amount Per Aggregate Year

No definition available.

Name:	pei_ClaimsExposureProtectionAmountPerAggregateYear
Namespace Prefix:	pei_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration