The amount of decrease in the impairment loss due to the discount rate sensitivity decrease.

No definition available.

Name:	glop_AmountOfDecreaseInImpairmentLossDueToDiscountRateSensitivity
Namespace Prefix:	glop_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of increase in the impairment loss due to the discount rate sensitivity increase.

+ References

No definition available.

+ Details

Name:	glop_AmountOfIncreaseInImpairmentLossDueToDiscountRateSensitivity
Namespace Prefix:	glop_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Charter hire rate used for sensitivity analysis

+ References

No definition available.

+ Details

Name:	glop_CharterHireRateUsedForSensitivityAnalysis
Namespace Prefix:	glop_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Impairment loss due to potential decrease in average charter rate used for sensitivity analysis

+ References

No definition available.

+ Details

Name:	glop_ImpairmentLossDueToPotentialDecreaseInAverageCharterRate
Namespace Prefix:	glop_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase or decrease in re-chartering rate for sensitivity analysis

+ References

No definition available.

+ Details

Name:	glop_IncreaseOrDecreaseInReCharteringRateForSensitivityAnalysis
Namespace Prefix:	glop_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of vessels for which recoverable amount is lower than carrying amount

+ References

No definition available.

+ Details

Name:	glop_NumberOfVesselsForWhichRecoverableAmountIsLowerThanCarryingAmount
Namespace Prefix:	glop_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of increase or decrease in discount rate for sensitivity analysis.

+ References

No definition available.

+ Details

Name:	glop_PercentageOfIncreaseOrDecreaseInDiscountRateForSensitivityAnalysis
Namespace Prefix:	glop_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Reversal of impairment loss due to potential increase in average charter rate

+ References

No definition available.

+ Details

Name:	glop_ReversalOfImpairmentLossDueToPotentialIncreaseInAverageCharterRate
Namespace Prefix:	glop_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The decrease in property, plant and equipment through classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Property, plant and equipment; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 73
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_DecreaseThroughClassifiedAsHeldForSalePropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2024-01-01
-Paragraph 134
-Subparagraph d
-Clause v
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_d_v&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2024-01-01
-Paragraph 134
-Subparagraph e
-Clause v
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_e_v&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The gain (loss) recognised on the measurement to fair value less costs to sell or on the disposal of the assets or disposal group(s) constituting the discontinued operation. [Refer: Discontinued operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2024-01-01
-Paragraph 33
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b_iii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The gains (losses) on disposals of property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 98
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_GainsLossesOnDisposalsOfPropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 73
-Subparagraph e
-Clause v
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_v&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 98
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 73
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 54
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_PropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis=ifrs-full_PropertyPlantAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ShipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glop_TriFuelDieselElectricLiquefiedNaturalGasCarriersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glop_GaslogSantiagoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glop_SteamVesselsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glop_SteamVesselsImpairedDuringCurrentPeriodMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glop_MethaneJaneElizabethMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glop_MethaneAlisonVictoriaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Tangible fixed assets - Impairment (Details) $ in Thousands		12 Months Ended
Tangible fixed assets - Impairment (Details) $ in Thousands	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) item	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Tangible fixed assets
Gain on disposal of vessels		$ 8,196	$ (1,033)	$ 171
Property, plant and equipment		$ 1,276,472	1,477,458
Discount rate applied to cash flow projections		7.99%
Property, plant and equipment owned
Tangible fixed assets
Impairment loss on vessels		$ (7,968)
Increase or decrease in re-chartering rate for sensitivity analysis		5
Decrease in impairment loss resulting from potential increase in re-chartering rate		(7,968)
Increase in impairment loss resulting from potential decrease in re-chartering rate		$ 14,305
Percentage of increase or decrease in the discount rate for sensitivity analysis		0.50%
Increase in impairment loss due to increase in discount rate		$ 2,121
Decrease in impairment loss due to decrease in discount rate		(2,236)
Vessels
Tangible fixed assets
Property, plant and equipment		1,269,155	$ 1,470,141
TFDE vessels \| Property, plant and equipment owned
Tangible fixed assets
Average long-term re-chartering rate used for sensitivity analysis		$ 65
Discount rate applied to cash flow projections		8.39%
GasLog Santiago
Tangible fixed assets
Carrying amount reclassified as "Vessel held for sale"	$ 145,353
Impairment loss from remeasurement at lower of carrying amount and fair value less costs to sell	$ 0
Gain on disposal of vessels		$ 8,196
Steam vessels \| Property, plant and equipment owned
Tangible fixed assets
Number of vessels for which recoverable amount (value in use) is lower than carrying amount \| item		2
Average long-term re-chartering rate used for sensitivity analysis		$ 35
Discount rate applied to cash flow projections		8.79%
Steam vessels impaired during current period \| Property, plant and equipment owned
Tangible fixed assets
Impairment loss on vessels		$ (7,968)
Property, plant and equipment		109,597
Methane Jane Elizabeth \| Property, plant and equipment owned
Tangible fixed assets
Impairment loss on vessels		(5,321)
Property, plant and equipment		53,827
Methane Alison Victoria \| Property, plant and equipment owned
Tangible fixed assets
Impairment loss on vessels		(2,647)
Property, plant and equipment		$ 55,770