Loss per share (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2026 CHF (SFr) category SFr / shares shares	Jun. 30, 2025 CHF (SFr) category SFr / shares shares	Jun. 30, 2026 CHF (SFr) category SFr / shares shares	Jun. 30, 2025 CHF (SFr) category SFr / shares shares
Loss per share
Net loss from continuing operations - basic	SFr (1,744,679)	SFr (1,958,912)	SFr (3,456,418)	SFr (3,431,775)
Net loss from continuing operations - diluted	(1,744,679)	(1,958,912)	(3,456,418)	(3,431,775)
Net profit from discontinued operations - basic		117,747		117,747
Net profit from discontinued operations - diluted		117,747		117,747
Net loss attributable to equity holders of the company - basic	(1,744,679)	(1,841,165)	(3,456,418)	(3,314,028)
Net loss attributable to equity holders of the company - diluted	SFr (1,744,679)	SFr (1,841,165)	SFr (3,456,418)	SFr (3,314,028)
Weighed average number of shares in issue - basic \| shares	122,592,940	100,523,234	120,977,878	99,440,314
Weighed average number of shares in issue - diluted \| shares	122,592,940	100,523,234	120,977,878	99,440,314
Basic profit / (loss) per share
Basic loss per share for loss attributable to the ordinary equity holders of the Company \| SFr / shares	SFr (0.01)	SFr (0.02)	SFr (0.03)	SFr (0.03)
From continuing operations \| SFr / shares	(0.01)	(0.02)	(0.03)	(0.03)
Diluted profit / (loss) per share
Diluted loss per share for loss attributable to the ordinary equity holders of the Company \| SFr / shares	(0.01)	(0.02)	(0.03)	(0.03)
From continuing operations \| SFr / shares	SFr (0.01)	SFr (0.02)	SFr (0.03)	SFr (0.03)
Number of categories of dilutive potential shares \| category	3	3	3	3

Number of categories of dilutive potential shares

No definition available.

Name:	adxn_NumberOfCategoriesOfDilutivePotentialShares
Namespace Prefix:	adxn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2025-01-01
-Paragraph 70
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_b&doctype=Standard
-URIDate 2025-03-27