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Namespace Prefix:	glp_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

The period of advance notice for redemption of limited partnership units.

No definition available.

Name:	glp_LimitedPartnershipUnitsRedemptionNoticePeriod
Namespace Prefix:	glp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The percentage rate used to calculate dividend payments on preferred units in a partnership.

No definition available.

Name:	glp_PreferredUnitsDividendRatePercentage
Namespace Prefix:	glp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The per unit liquidation preference (or restrictions) of nonredeemable preferred units (or preferred units redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the units. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the unit.

No definition available.

Name:	glp_PreferredUnitsLiquidationPreference
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Data Type:	dtr-types:perShareItemType
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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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

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Period Type:	duration

Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

Name:	us-gaap_DistributionMadeToLimitedPartnerDistributionsPaidPerUnit
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Data Type:	dtr-types:perShareItemType
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The total amount of distributions to the general partner during the period.

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

Amount of incentive obligation paid in cash or stock during the period to a limited liability corporation managing member or limited partnership general partner.

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

The total amount of distributions to limited partners.

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

Total distributions to each class of partners (i.e., general, limited and preferred partners).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5

Reference 2: 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

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

- References

No definition available.

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Data Type:	xbrli:stringItemType
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Balance Type:
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Data Type:	na
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Name:	srt_StatementScenarioAxis=glp_AnnualizedBasisMember
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Data Type:	na
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Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=glp_LimitedPartnershipUnitsPreferredSeriesBMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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