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Management Agreements and Leases - Narrative (Details)	Jun. 30, 2022 hotel agreement property tenant
Management Agreements and Leases [Line Items]
Number of operating agreements | agreement	6
Hotels
Management Agreements and Leases [Line Items]
Number of properties owned | hotel	247
Net Lease
Management Agreements and Leases [Line Items]
Number of properties owned | property	775
Number of tenants | tenant	176

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- References

No definition available.

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- Definition

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

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No definition available.

+ Details

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Namespace Prefix:	svc_
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- Definition

Number Of Tenants

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No definition available.

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Name:	svc_NumberOfTenants
Namespace Prefix:	svc_
Data Type:	xbrli:integerItemType
Balance Type:	na
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- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
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- Details

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Data Type:	na
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- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=svc_NetLeasePropertyMember
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