Financial assets and liabilities at fair value - Transfers made between both assets and liabilities (Details)	6 Months Ended	12 Months Ended
Jun. 30, 2025	Dec. 31, 2024
Financial assets and liabilities at fair value
Statement that there were no transfers between Level 1, Level 2 or Level 3 of fair value hierarchy	no transfers during the period	no transfers during the period

The statement that there were no transfers between Level 1, Level 2 or Level 3 of the fair value hierarchy of liabilities during the year.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_c&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph e
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_iv&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_StatementThatThereWereNoTransfersBetweenLevel1Level2OrLevel3OfFairValueHierarchyLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration