Number of persons employed by the Entity

No definition available.

Name:	dei_EntityNumberOfEmployees
Namespace Prefix:	dei_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Debt Default, Cure Period

+ References

No definition available.

+ Details

Name:	svc_DebtInstrumentDebtDefaultCurePeriod
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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

Represents the annual business management fee as a percentage of aggregate cost of properties acquired by the entity in excess of a specified amount pursuant to business management agreement with related parties.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionAnnualBusinessManagementFeeAsPercentageOfAggregateCostOfPropertiesAcquiredInExcessOfSpecifiedAmount
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the base management fees payable as a percentage of aggregate book value of real estate assets or transferred assets.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionBaseManagementFeePayableAsPercentageOfAggregateBookValueOfRealEstateAssetsOrTransferredAssets
Namespace Prefix:	svc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Related Party Transaction Base Management Fee Payable As Percentage of Average Closing Stock Price on Stock Exchange

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionBaseManagementFeePayableAsPercentageOfAverageClosingStockPriceOnStockExchange
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the base management fees payable as a percentage of average historical cost of real estate investments, excluding transferred assets for investments exceeding specified amount.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionBaseManagementFeePayableAsPercentageOfAverageHistoricalCostOfRealEstateInvestmentsExcludingTransferredAssetsForInvestmentsExceedingSpecifiedAmount
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the base management fees payable as a percentage of average historical cost of real estate investments, excluding transferred assets for investments up to specified amount.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionBaseManagementFeePayableAsPercentageOfAverageHistoricalCostOfRealEstateInvestmentsExcludingTransferredAssetsForInvestmentsUpToSpecifiedAmount
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the amount of average market capitalization for payment of base management fee.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionBaseManagementFeePayableAverageMarketCapitalization
Namespace Prefix:	svc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the threshold amount of other real estate investments for payment of base management fee.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionBaseManagementFeePayableThresholdAmountOfOtherRealEstateInvestments
Namespace Prefix:	svc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the construction supervision fees as a percentage of construction costs pursuant to property management agreement with related parties.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionConstructionSupervisionFeesAsPercentageOfConstructionCosts
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the incentive fee as a percentage of the product of weighted average common shares outstanding on a fully diluted basis and the excess if any of the Normalized FFO Per Share as defined in the business management agreement, for current fiscal year over the preceding fiscal year.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionIncentiveFeeAsPercentageOfProductOfWeightedAverageCommonSharesOutstandingAndExcessOfNormalizedFFOPerShareForCurrentFiscalYearOverPrecedingFiscal
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction, Incentive Fee, Consecutive Trading Days For Share Price Multiplier

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionIncentiveFeeConsecutiveTradingDaysForSharePriceMultiplier
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction, Incentive Fee, Final Trading Days Of Relevant Measurement Period

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionIncentiveFeeFinalTradingDaysOfRelevantMeasurementPeriod
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction, Incentive Fee Reduction Threshold, Basis Points On Return Per Share Below SNL US REIT Hotel Index

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionIncentiveFeeReductionThresholdBasisPointsOnReturnPerShareBelowSNLUSREITHotelIndex
Namespace Prefix:	svc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the window or numbers of business days after any calendar year to provide notice for termination of property management agreement by the related party for performance reasons.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionNumberOfBusinessDayWindowAfterEndOfAnyCalendarYearPriorWrittenNoticeForTerminationOfPropertyManagementAgreementForPerformanceByRelatedParty
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the portion of shares issued in payment of an incentive management fee.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionPercentageOfSharesIssuedInPaymentOfIncentiveManagementFees
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the period of prior written notice for termination of the service agreements by the related party.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionPeriodOfPriorWrittenNoticeForTerminationOfServiceAgreementsByRelatedParty
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the property management fees as a percentage of gross collected rents pursuant to property management agreement with related parties.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionPropertyManagementFeesAsPercentageOfGrossCollectedRents
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction Property Management Fees as Percentage of Gross Collected Rents, Year One

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionPropertyManagementFeesAsPercentageOfGrossCollectedRentsYearOne
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction Property Management Fees as Percentage of Gross Collected Rents, Year Three

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionPropertyManagementFeesAsPercentageOfGrossCollectedRentsYearThree
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction Property Management Fees as Percentage of Gross Collected Rents, Year Two

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionPropertyManagementFeesAsPercentageOfGrossCollectedRentsYearTwo
Namespace Prefix:	svc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the window after a change in control to provide notice for termination of property management agreement by the related party.

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionWindowAfterChangeOfControlPriorWrittenNoticeForTerminationOfPropertyManagementAgreementByRelatedParty
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transactions, Measurement Period

+ References

No definition available.

+ Details

Name:	svc_RelatedPartyTransactionsMeasurementPeriod
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the remaining term assumption in years used to calculate the fee for termination of one or both of the company's amended management agreements for a performance reason.

+ References

No definition available.

+ Details

Name:	svc_TerminationFeeRemainingTermAssumption
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the term in years used to calculate the fee for termination of one or both of the company's amended management agreements for a performance reason.

+ References

No definition available.

+ Details

Name:	svc_TerminationFeeTerm
Namespace Prefix:	svc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

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

- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

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Period Type:	duration

- Details

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Business and Property Management Agreements with RMR - Narrative (Details) $ in Thousands		1 Months Ended	12 Months Ended
	Jun. 22, 2021	Jan. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) employee agreement
Real Estate Properties [Line Items]
Entity number of employees \| employee			0
Line of Credit \| Citibank Credit Agreement
Real Estate Properties [Line Items]
Secured revolving credit facility		$ 100,000
Period to cure the default (in days)		30 days
Amended And Restate Business Management Agreement
Real Estate Properties [Line Items]
Incentive fee as percentage of product of weighted average common shares outstanding			12.00%
Amended And Restate Business Management Agreement \| Minimum
Real Estate Properties [Line Items]
Incentive management fee reduction			0.0200
Amended And Restate Business Management Agreement \| Maximum
Real Estate Properties [Line Items]
Incentive management fee reduction			0.0500
RMR LLC
Real Estate Properties [Line Items]
Property management fees percentage of gross collected rents			3.00%
Construction supervision fees as percentage of construction costs			5.00%
Property management fees percentage of gross collected rents for 2024			1.00%
Property management fees percentage of gross collected rents for 2025			2.00%
Property management fees percentage of gross collected rents for 2026			3.00%
Related party transaction, rate (as percent)	3.00%
RMR LLC \| Amended And Restate Business Management Agreement
Real Estate Properties [Line Items]
Number of management agreements \| agreement			2
Base management fee payable as a percentage of average historical cost of the real estate investments, excluding transferred assets for investments up to a specific amount			0.70%
Base management fee payable as percentage of aggregate book value of real estate assets or transferred assets			$ 250,000
Base management fee payable as percentage of average historical cost of real estate investments excluding transferred assets for investments exceeding specified amount			0.50%
Base management fee payable as percentage of average closing stock price on stock exchange			0.70%
Base management fee payable as percentage of average market capitalization exceeding specified amount			0.50%
Incentive fee as percentage of product of weighted average common shares outstanding			12.00%
Measurement period (in years)			3 years
Incentive fee, consecutive trading days for share price multiplier (in days)			10 days
Incentive fee, final trading days of relevant measurement period (in days)			30 days
Percentage of shares issued in payment of incentive management fees			1.50%
RMR LLC \| Amended And Restate Business Management Agreement \| Up C Transaction
Real Estate Properties [Line Items]
Window for providing notice of termination of property management agreement for performance by the related party (in days)			60 days
Window providing notice of termination of property management agreement after change of control by related party (in months)			12 months
Termination fee remaining term assumption (in years)			10 years
Period over which transition services will be provided by the related party after termination of the agreement (in days)			120 days
RMR LLC \| Amended And Restate Business Management Agreement \| Minimum
Real Estate Properties [Line Items]
Incentive management fee reduction			0.0200
RMR LLC \| Amended And Restate Business Management Agreement \| Minimum \| Up C Transaction
Real Estate Properties [Line Items]
Termination fee term (in years)			19 years
RMR LLC \| Amended And Restate Business Management Agreement \| Maximum
Real Estate Properties [Line Items]
Base management fee payable, average market capitalization			$ 250,000
Base management fee payable, threshold amount of other real estate investments			$ 250,000
Incentive management fee reduction			0.0500
RMR LLC \| Amended And Restate Business Management Agreement \| Maximum \| Up C Transaction
Real Estate Properties [Line Items]
Termination fee term (in years)			20 years