Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	9 Months Ended
Sep. 30, 2018
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease initial term	12 months

Term of accounting policy election for short term leases.

No definition available.

Name:	pk_TermOfAccountingPolicyElectionForShortTermLeases
Namespace Prefix:	pk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration