Summary of Significant Accounting Policies - Schedule of Future Amortization of Debt Issuance Costs to be Recognized (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Amount
2026	$ 24,164
2027	19,533
2028	7,373
2029	5,121
2030	3,414
Thereafter	3,714
Total	$ 63,319

The amount of amortization of deferred finance cost expected to be recognized after the fifth succeeding fiscal year.

No definition available.

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

The amount of amortization of deferred finance cost expected to be recognized during year five of the five succeeding fiscal years.

No definition available.

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

The amount of amortization of deferred finance cost expected to be recognized during year four of the five succeeding fiscal years.

No definition available.

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

The amount of amortization of deferred finance cost expected to be recognized during year one of the five succeeding fiscal years.

No definition available.

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

The amount of amortization of deferred finance cost expected to be recognized during year three of the five succeeding fiscal years.

No definition available.

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

The amount of amortization of deferred finance cost expected to be recognized during year one of the five succeeding fiscal years.

No definition available.

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

Future Amortization Of Financing Costs

No definition available.

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

No definition available.

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