Shareholders' Equity - Schedule of Distributions Paid on Common Shares (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stockholders' Equity Note [Abstract]
Annual Per Share Distribution (in dollars per share)	$ 0.61	$ 0.80	$ 0.23
Total Distributions	$ 101,150	$ 132,430	$ 38,044
Ordinary Income	0.00%	9.30%	0.00%
Capital Gain	0.00%	86.15%	0.00%
Return of Capital	100.00%	4.55%	100.00%
Qualified Dividend	0.00%	6.25%	0.00%

Common Stock Dividends Paid As Percentage Of Capital Gain

No definition available.

Name:	svc_CommonStockDividendsPaidAsPercentageOfCapitalGain
Namespace Prefix:	svc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the distributions paid as percentage ordinary income by the entity.

+ References

No definition available.

+ Details

Name:	svc_CommonStockDividendsPaidAsPercentageOfOrdinaryIncome
Namespace Prefix:	svc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the distributions paid expressed as a percentage of qualified dividend by the entity.

+ References

No definition available.

+ Details

Name:	svc_CommonStockDividendsPaidAsPercentageOfQualifiedDividend
Namespace Prefix:	svc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the distributions paid expressed as a percentage of return of capital by the entity.

+ References

No definition available.

+ Details

Name:	svc_CommonStockDividendsPaidAsPercentageOfReturnOfCapital
Namespace Prefix:	svc_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_CommonStockDividendsPerShareCashPaid
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

+ Details

Name:	us-gaap_DividendsCommonStockCash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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