Represents the number of shares held as a percentage of the total shares outstanding at the end of the period.

No definition available.

Name:	svc_InvestmentOwnedPercentageOfTotalSharesOutstanding
Namespace Prefix:	svc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the service agreements entered into by the entity for availing services from other entities.

+ References

No definition available.

+ Details

Name:	svc_NumberOfServiceAgreements
Namespace Prefix:	svc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares of investment owned.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

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Balance Type:	na
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Related Person Transactions (Details)	12 Months Ended
Related Person Transactions (Details)	Dec. 31, 2024 property hotel agreement shares	Dec. 31, 2023
Related Party Transaction [Line Items]
Number of properties \| property	948
Sonesta International Hotels Corporation
Related Party Transaction [Line Items]
Noncontrolling interest, ownership (as percent)	34.00%	34.00%
Net Lease
Related Party Transaction [Line Items]
Number of properties \| property	742
Hotels
Related Party Transaction [Line Items]
Number of properties \| hotel	206
RMR
Related Party Transaction [Line Items]
Outstanding shares of common stock (as percent)	4.40%
RMR \| TravelCenters of America LLC
Related Party Transaction [Line Items]
Number of common shares owned (in shares) \| shares	661,506
Share-Based Payment Arrangement, Employee \| RMR
Related Party Transaction [Line Items]
Vesting period	4 years
Share-Based Payment Arrangement, Employee \| RMR \| First Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting rights (as percent)	20.00%
Share-Based Payment Arrangement, Employee \| RMR \| Second Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting rights (as percent)	20.00%
Share-Based Payment Arrangement, Employee \| RMR \| Third Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting rights (as percent)	20.00%
Share-Based Payment Arrangement, Employee \| RMR \| Fourth Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting rights (as percent)	20.00%
Share-Based Payment Arrangement, Employee \| RMR \| Fifth Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting rights (as percent)	20.00%
RMR \| Amended And Restate Business Management Agreement
Related Party Transaction [Line Items]
Number of service agreements \| agreement	2
Sonesta International Hotels Corporation \| Hotels \| Related Party
Related Party Transaction [Line Items]
Number of properties \| hotel	181