v3.25.1

Details of the NovAlix transaction - Advance (Details) - Drug discovery collaboration transaction with NovAliX € in Thousands | 12 Months Ended
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Dec. 31, 2023 EUR (€)
Ifrs Collaborative Arrangement And Arrangements Other Than Collaborative [Line Items] |
Loss on sale of fixed assets | € 12,506
Result of transfer of retirement benefit liability | (3,022)
Result of transfer of right-of-use asset | 174
Advance related to the NovAliX transaction | € 9,658

X
- Definition The amount of advances to be released under the collaboration agreement. + References No definition available. + Details
Name: | glpg_CollaborationAgreementAdvancesToBeReleased
Namespace Prefix: | glpg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line item + References No definition available. + Details
Name: | glpg_IfrsCollaborativeArrangementAndArrangementsOtherThanCollaborativeLineItems
Namespace Prefix: | glpg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of result of transfer of retirement benefit liability. + References No definition available. + Details
Name: | glpg_ResultOfTransferOfRetirementBenefitLiability
Namespace Prefix: | glpg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of result of transfer of right-of-use asset. + References No definition available. + Details
Name: | glpg_ResultOfTransferOfRightOfUseAsset
Namespace Prefix: | glpg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The losses on the disposal 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_LossesOnDisposalsOfPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | glpg_IfrsCollaborativeArrangementAndArrangementsOtherThanCollaborativeAxis=glpg_CollaborationAgreementDrugDiscoveryCollaborationTransactionNovAlixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |