Management Agreements and Leases (Details)	12 Months Ended
Dec. 31, 2018 travel_center hotel agreement property
Management Agreements and Leases
Number of Properties \| property	525
Number of operating agreements \| agreement	13
Hotel operating revenues
Management Agreements and Leases
Number of Properties	326
Number of operating agreements \| agreement	8
Number of properties leased to taxable REIT subsidiaries	324
Number of properties leased to third parties	2
Hotel operating revenues \| Minimum
Management Agreements and Leases
Number of real estate properties leased or managed \| property	1
Hotel management agreements and leases, renewal period	20 years
Hotel operating revenues \| Maximum
Management Agreements and Leases
Hotel management agreements and leases, renewal period	60 years
Travel centers
Management Agreements and Leases
Number of Properties \| travel_center	199
IHG Agreement \| Hotel operating revenues \| Maximum
Management Agreements and Leases
Number of real estate properties leased or managed	100

The number of real estate properties under operating agreements.

No definition available.

Name:	hpt_HotelManagementAgreementsAndLeasesRealEstatePropertiesUnderAgreement
Namespace Prefix:	hpt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the number of years for which the entity has the option to renew the agreement.

No definition available.

Name:	hpt_HotelManagementAgreementsAndLeasesRenewalPeriod
Namespace Prefix:	hpt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	hpt_ManagementAgreementsAndLeasesLineItems
Namespace Prefix:	hpt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the number of management agreements or leases under which properties of the entity are operated.

No definition available.

Name:	hpt_NumberOfManagementAgreementsOrLeases
Namespace Prefix:	hpt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the number of properties leased to taxable REIT subsidiaries.

No definition available.

Name:	hpt_NumberOfPropertiesLeasedToTaxableREITSubsidiaries
Namespace Prefix:	hpt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the number of properties leased to third parties.

No definition available.

Name:	hpt_NumberOfPropertiesLeasedToThirdParties
Namespace Prefix:	hpt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The number of real estate properties owned as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_HotelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=hpt_TravelCentersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	hpt_ManagementAgreementContractNameAxis=hpt_IHGAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: