Amount of equity interest received on disposal of discontinued operation

No definition available.

Name:	adxn_AmountOfEquityInterestReceivedOnDisposalOfDiscontinuedOperation
Namespace Prefix:	adxn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fair value of service agreement provided after disposal of discontinued operation

+ References

No definition available.

+ Details

Name:	adxn_FairValueOfServiceAgreementProvidedAfterDisposalOfDiscontinuedOperation
Namespace Prefix:	adxn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Gross proceeds from disposal of discontinued operation

+ References

No definition available.

+ Details

Name:	adxn_GrossProceedsFromDisposalOfDiscontinuedOperation
Namespace Prefix:	adxn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase (decrease) in key management personnel compensation.

+ References

No definition available.

+ Details

Name:	adxn_IncreaseDecreaseInKeyManagementPersonnelCompensation
Namespace Prefix:	adxn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Key management personnel compensation, salaries, other short-term employee benefits and post-employment benefits

+ References

No definition available.

+ Details

Name:	adxn_KeyManagementPersonnelCompensationSalariesOtherShortTermEmployeeBenefitsAndPostEmploymentBenefits
Namespace Prefix:	adxn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of equity interest received

+ References

No definition available.

+ Details

Name:	adxn_PercentageOfEquityInterestReceived
Namespace Prefix:	adxn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amounts payable resulting from related party transactions. [Refer: Total for all related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2025-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_20&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2025-01-01
-Paragraph 18
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_18_b&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 230
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_230_b&doctype=Standard
-URIDate 2025-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 230
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_230_b&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_AmountsPayableRelatedPartyTransactions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_DisclosureOfTransactionsBetweenRelatedPartiesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2025-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 227
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_227&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 227
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_227&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2025-01-01
-Paragraph 17
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2025-en-r&anchor=para_17_e&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=adxn_NeurosterixUsHoldingsLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ContinuingAndDiscontinuedOperationsAxis=adxn_AllostericModulatorDrugDiscoveryTechnologyPlatformAndPortfolioOfPreclinicalProgramsDisposalGroupDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=ifrs-full_KeyManagementPersonnelOfEntityOrParentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=adxn_NeurosterixPharmaSarlMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related party transactions (Details) - CHF (SFr)		3 Months Ended		6 Months Ended		12 Months Ended
Related party transactions (Details) - CHF (SFr)	Apr. 02, 2024	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2024
Related party transactions
Salaries, other short-term employee benefits and post-employment benefits		SFr 216,591	SFr 99,864	SFr 438,143	SFr 197,156
Share-based compensation		5,654	18,910	13,980	43,428
Key management compensation		222,245	118,774	452,123	240,584
Increase (decrease) in total compensation costs for key management		100,000		200,000
Neurosterix US Holdings LLC
Related party transactions
Percentage of equity interest received	20.00%
Discontinued operations as disclosed below
Related party transactions
Cash in from Neurosterix Pharma Sarl sale	SFr 5,000,000					SFr 5,000,000
Discontinued operations as disclosed below \| Neurosterix US Holdings LLC
Related party transactions
Percentage of equity interest received	20.00%					20.00%
Fair value of Neurosterix US Holdings LLC's participation	SFr 9,420,000					SFr 9,400,000
Board of Directors and Executive Management
Related party transactions
Net payable		100,000	100,000	100,000	100,000
Neurosterix Pharma Sarl
Related party transactions
Net payable		47,461		47,461
Fair value of service agreement		SFr 9,948	SFr 34,505	SFr 17,639	SFr 105,560