v3.25.1

Auditor's remuneration (Details) - EUR (€) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Auditor's remuneration Abstract |  |
Statutory auditor's fees | € 1,063,900 | € 1,124,000
Auditors Fees In Relation to Alfasigma Transaction and Adaptimmune Contract | 203,300 |
Audit-related fees | 17,200 | 20,200
Other fees related to non-audit services | 88,900 | 6,600
Other fees related to non-audit services executed by persons related to the statutory auditor | 0 | 0
Tax fees | € 49,500 | € 68,000

X
- Definition The amount of auditors fees related to the Alfasigma transaction and the Adaptimmune contract. + References No definition available. + Details
Name: | glpg_AuditorsFeesInRelationToAlfasigmaTransactionAndAdaptimmuneContract
Namespace Prefix: | glpg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other fees related to non-audit fees executed by statutory auditor. + References No definition available. + Details
Name: | glpg_OtherFeesRelatedToNonAuditServicesExecutedByPersonsRelatedToStatutoryAuditor.
Namespace Prefix: | glpg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of fees paid or payable to the entity's auditors. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AuditorsRemuneration
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The amount of fees paid or payable to the entity's auditors for auditing services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AuditorsRemunerationForAuditServices
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of fees paid or payable to the entity's auditors for services that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AuditorsRemunerationForOtherServices
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of fees paid or payable to the entity's auditors for tax services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_AuditorsRemunerationForTaxServices
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration