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v3.25.4

Summary of Significant Accounting Policies - Taxes (Details) | 12 Months Ended
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Dec. 31, 2025 item
Income Taxes |
Number of wholly owned subsidiaries which are taxable for federal and state income tax purposes | 1

X
- References No definition available. + Details
Name: | glp_IncomeTaxesAbstract
Namespace Prefix: | glp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of wholly owned subsidiaries of the entity which are taxable for federal and state income tax purposes. + References No definition available. + Details
Name: | glp_NumberOfWhollyOwnedSubsidiariesWhichAreTaxableForFederalAndStateIncomeTaxPurposes
Namespace Prefix: | glp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration