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

No definition available.

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Amount of cash outflow for redemption of limited partners capital account including cash distributions.

+ References

No definition available.

+ Details

Name:	glp_LimitedPartnersCapitalAccountRedemptionIncludingCashDistributionsPaid
Namespace Prefix:	glp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

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.

+ References

No definition available.

+ Details

Name:	glp_PreferredUnitsLiquidationPreference
Namespace Prefix:	glp_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cash distribution paid to unit-holder of limited partnership (LP).

+ 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_DistributionMadeToLimitedPartnerCashDistributionsPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

+ Details

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

- Definition

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

+ References

+ Details

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

- Definition

The total amount of distributions to the general partner during the period.

+ References

+ Details

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

- Definition

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

+ References

+ Details

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

- Definition

The total amount of distributions to limited partners.

+ References

+ Details

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

- Definition

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

+ References

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

+ Details

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

- References

No definition available.

+ Details

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

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=glp_LimitedPartnershipUnitsCommonMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=glp_LimitedPartnershipUnitsPreferredSeriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=glp_LimitedPartnershipUnitsPreferredSeriesBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Partners' Equity, Allocations and Cash Distributions - Distributions paid and Preferred Units (Details) - USD ($) $ / shares in Units, $ in Thousands																											2 Months Ended		12 Months Ended
	Feb. 18, 2025	Jan. 29, 2025	Jan. 14, 2025	Nov. 15, 2024	Nov. 14, 2024	Aug. 15, 2024	Aug. 14, 2024	May 15, 2024	Apr. 15, 2024	Feb. 15, 2024	Feb. 14, 2024	Nov. 15, 2023	Nov. 14, 2023	Aug. 15, 2023	Aug. 14, 2023	May 15, 2023	Feb. 15, 2023	Feb. 14, 2023	Nov. 15, 2022	Nov. 14, 2022	Aug. 15, 2022	Aug. 12, 2022	May 16, 2022	May 13, 2022	Feb. 15, 2022	Feb. 14, 2022	Feb. 18, 2025	Feb. 14, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Distribution Payment
Per Unit Cash Distribution (in dollars per unit)					$ 0.73		$ 0.72	$ 0.71			$ 0.7		$ 0.685		$ 0.675	$ 0.655		$ 1.5725		$ 0.625		$ 0.605		$ 0.595		$ 0.585
Cash distribution, common units					$ 24,817		$ 24,477	$ 24,137			$ 23,797		$ 23,287		$ 22,947	$ 22,267		$ 53,458		$ 21,247		$ 20,567		$ 20,227		$ 19,887
Cash distribution, general partner					194		189	185			180		174		169	162		569		153		147		144		141
Cash distribution, incentive					3,810		3,493	3,174			2,857		2,380		2,062	1,587		1,383		1,280		1,075		973		871
Distributions, Total					$ 28,821		$ 28,159	$ 27,496			$ 26,834		$ 25,841		$ 25,178	$ 24,016		$ 55,410		$ 22,680		$ 21,789		$ 21,344		$ 20,899			$ 121,995	$ 144,754	$ 100,564
Common Limited Partners
Cash Distribution Payment
Quarterly distribution declared (in dollars per unit)																													$ 0.635
Special distribution declared (in dollars per unit)																													0.9375
Common Limited Partners \| Subsequent Events
Cash Distribution Payment
Cash distribution, common units			$ 29,500
Distributions, Total																												$ 29,500
Quarterly cash distributions declared (in dollars per unit)		$ 0.74
Series A Preferred Limited Partners
Cash Distribution Payment
Per Unit Cash Distribution (in dollars per unit)									$ 0.514275	$ 0.77596		$ 0.77501		$ 0.609375		$ 0.609375	$ 0.609375		$ 0.609375		$ 0.609375		$ 0.609375		$ 0.609375
Cash distribution										$ 2,142		$ 2,139		$ 1,682		$ 1,682	$ 1,682		$ 1,682		$ 1,682		$ 1,682		$ 1,682
Total redemption amount									$ 70,400
Series B Preferred Limited Partners
Cash Distribution Payment
Per Unit Cash Distribution (in dollars per unit)				$ 0.59375		$ 0.59375		$ 0.59375		$ 0.59375		$ 0.59375		$ 0.59375		$ 0.59375	$ 0.59375		$ 0.59375		$ 0.59375		$ 0.59375		$ 0.59375
Cash distribution				$ 1,781		$ 1,781		$ 1,781		$ 1,781		$ 1,781		$ 1,781		$ 1,781	$ 1,781		$ 1,781		$ 1,781		$ 1,781		$ 1,781
Liquidation preference (in dollars per unit)																													$ 25
Series B Preferred Limited Partners \| Minimum
Cash Distribution Payment
Notice period for redemption																													30 days
Series B Preferred Limited Partners \| Maximum
Cash Distribution Payment
Notice period for redemption																													60 days
Series B Preferred Limited Partners \| Subsequent Events
Cash Distribution Payment
Cash distribution, common units	$ 1,800
Distributions, Total																											$ 1,800