XML 156 R110.htm IDEA: XBRL DOCUMENT v3.25.1

Financial liabilities - Royalty certificates (Details) € / shares in Units, € in Thousands										12 Months Ended					121 Months Ended
	Dec. 31, 2024 EUR (€) € / shares	Dec. 31, 2023 EUR (€) € / shares		Oct. 24, 2023 € / shares shares	Feb. 22, 2023 EUR (€) € / shares shares	Dec. 31, 2022 EUR (€) € / shares		Sep. 07, 2022 EUR (€) € / shares shares	Sep. 02, 2022 EUR (€) transaction € / shares shares	Dec. 31, 2024 EUR (€) € / shares	Dec. 31, 2023 EUR (€) € / shares shares		Dec. 31, 2022 EUR (€) € / shares shares		Dec. 31, 2023 EUR (€) € / shares		Nov. 19, 2024 € / shares	Jun. 21, 2024 € / shares	Mar. 28, 2024 € / shares	Nov. 02, 2023 € / shares	Aug. 24, 2023 € / shares	Aug. 20, 2023 € / shares	May 24, 2023 € / shares	Apr. 01, 2022 € / shares	Dec. 31, 2021 € / shares
Disclosure of detailed information about borrowings [line items]
Issue of equity					€ 130,000			€ 46,231			€ 353,377		€ 46,231
Capital increase from issuance of ordinary shares (in shares) | shares				20,325,500	20,000,000			5,530,000			40,325,500		5,530,000
Par value per share (in euro per share) | € / shares	€ 0.01	€ 0.01		€ 0.01	€ 0.01	€ 0.01		€ 0.01		€ 0.01	€ 0.01		€ 0.01		€ 0.01		€ 0.01						€ 0.01
Equity issuance, subscripion price per share (in euro per share) | € / shares					€ 6.50			€ 8.36
Net proceeds from sale of royalty certificates									€ 2,931	€ 0	€ 0		€ 2,931		€ 2,900
Royalty certificate, percentage of future sales									2.00%
Royalty certificate, maximum amount									€ 172,000
Share issue related cost											28,111		3,280
Royalty certificates	€ 13,023	€ 12,229	[1]			€ 3,287	[1]			13,023	12,229	[1]	3,287	[1]	12,229	[1]
Decrease in interest expense													100
Increase (decrease) through amortization cost remeasurement										(3,404)
Interest on royalty certificates										794	8,942		356
Unwinding of discount on royalties										4,198
Financial liabilities, at fair value	€ 162,256	€ 125,191				€ 58,469				€ 162,256	€ 125,191		€ 58,469		€ 125,191
Share price
Disclosure of detailed information about borrowings [line items]
Amount of reasonably possible increase in unobservable input, liabilities | € / shares	€ 1	€ 1				€ 1				€ 1	€ 1		€ 1		€ 1			€ 1	€ 1	€ 1	€ 1	€ 1		€ 1	€ 1
Royalty certificates
Disclosure of detailed information about borrowings [line items]
Increase (decrease) through amortization cost remeasurement										€ (3,404)	€ 6,421
Royalty certificates
Disclosure of detailed information about borrowings [line items]
Notional amount									€ 49,162
Other liabilities, number of transactions | transaction									2
Issue of equity									€ 46,231
Capital increase from issuance of ordinary shares (in shares) | shares									5,530,000
Par value per share (in euro per share) | € / shares									€ 0.01
Equity issuance, subscripion price per share (in euro per share) | € / shares									€ 8.36
Royalty certificate, percentage of future sales									2.00%
Royalty certificate, maximum amount									€ 172,000
Royalty certificates, EIR		34.00%									34.00%				34.00%
Financial liabilities, at fair value	€ 7,313	€ 12,395				€ 3,307				€ 7,313	€ 12,395		€ 3,307		€ 12,395
Royalty certificates | POS
Disclosure of detailed information about borrowings [line items]
Percentage of reasonably possible increase in unobservable input, liabilities	0.05%	0.05%				0.05%				0.05%	0.05%		0.05%		0.05%
Increase (decrease) in financial liabilities at fair value due to reasonably possible increase in unobservable input	€ 572	€ 1,104				€ 299
Percentage of reasonably possible decrease in unobservable input, liabilities	(0.05%)	(0.05%)				(0.05%)				(0.05%)	(0.05%)		(0.05%)		(0.05%)
Increase (decrease) in financial liabilities at fair value due to reasonably possible decrease in unobservable input	€ (572)	€ (1,104)				€ (294)
Royalty certificates | Peak penetration
Disclosure of detailed information about borrowings [line items]
Percentage of reasonably possible increase in unobservable input, liabilities	5.00%	5.00%				5.00%				5.00%	5.00%		5.00%		5.00%
Increase (decrease) in financial liabilities at fair value due to reasonably possible increase in unobservable input	€ 1,735	€ 1,757				€ 221
Percentage of reasonably possible decrease in unobservable input, liabilities	(5.00%)	(5.00%)				(5.00%)				(5.00%)	(5.00%)		(5.00%)		(5.00%)
Increase (decrease) in financial liabilities at fair value due to reasonably possible decrease in unobservable input	€ (2,527)	€ (2,311)				€ (347)
Royalty certificates | WACC
Disclosure of detailed information about borrowings [line items]
Percentage of reasonably possible increase in unobservable input, liabilities	1.00%	1.00%				1.00%				1.00%	1.00%		1.00%		1.00%
Increase (decrease) in financial liabilities at fair value due to reasonably possible increase in unobservable input	€ (314)	€ (577)				€ (191)
Percentage of reasonably possible decrease in unobservable input, liabilities	(1.00%)	(1.00%)				(1.00%)				(1.00%)	(1.00%)		(1.00%)		(1.00%)
Increase (decrease) in financial liabilities at fair value due to reasonably possible decrease in unobservable input	€ 332	€ 612				€ 205
Royalty certificates | Share price
Disclosure of detailed information about borrowings [line items]
Increase (decrease) in financial liabilities at fair value due to reasonably possible increase in unobservable input	1,160	1,325
Increase (decrease) in financial liabilities at fair value due to reasonably possible decrease in unobservable input	€ (1,160)	€ (1,325)
Amount of reasonably possible increase in unobservable input, liabilities | € / shares	€ 1	€ 1								€ 1	€ 1				€ 1
Amount of reasonably possible decrease in unobservable input, liabilities | € / shares	€ (1)	€ (1)								€ (1)	€ (1)				€ (1)
Share premium
Disclosure of detailed information about borrowings [line items]
Issue of equity											€ 352,974		€ 46,176
Share premium | Royalty certificates
Disclosure of detailed information about borrowings [line items]
Share issue related cost													€ 3,280
[1] 1In application of the Amendments to IAS 1 Presentation of Financial Statements – Classification of Liabilities as Current or Non-current, and Non-current Liabilities with Covenants, the non-current portion of the OCEANE bonds as of December 31, 2022, amounting to €19,332 thousand, and the non-current portion of the Heights convertible notes as of December 31, 2023, amounting to €20,652 thousand, were reclassified within the current liabilities (Convertible loan notes) as of December 31, 2022 and 2023 respectively (see Note 2).

X

- Definition

Amount Of Reasonably Possible Decrease In Unobservable Input, Liabilities

+ References

No definition available.

+ Details

Name:	abvx_AmountOfReasonablyPossibleDecreaseInUnobservableInputLiabilities
Namespace Prefix:	abvx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount Of Reasonably Possible Increase In Unobservable Input, Liabilities

+ References

No definition available.

+ Details

Name:	abvx_AmountOfReasonablyPossibleIncreaseInUnobservableInputLiabilities
Namespace Prefix:	abvx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Decrease In Interest Expense On Royalty Certificates

+ References

No definition available.

+ Details

Name:	abvx_DecreaseInInterestExpenseOnRoyaltyCertificates
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Equity Issuance, Subscription Price Per Share

+ References

No definition available.

+ Details

Name:	abvx_EquityIssuanceSubscriptionPricePerShare
Namespace Prefix:	abvx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Increase (Decrease) In Number Of Ordinary Shares Issued Through Capital Increase

+ References

No definition available.

+ Details

Name:	abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease
Namespace Prefix:	abvx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Increase (Decrease) Through Amortization Cost Remeasurement, Liabilities Arising From Financing Activities

+ References

No definition available.

+ Details

Name:	abvx_IncreaseDecreaseThroughAmortizationCostRemeasurementLiabilitiesArisingFromFinancingActivities
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Interest Expense On Royalty Certificates

+ References

No definition available.

+ Details

Name:	abvx_InterestExpenseOnRoyaltyCertificates
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Net Proceeds From Sale Of Royalty Certificates

+ References

No definition available.

+ Details

Name:	abvx_NetProceedsFromSaleOfRoyaltyCertificates
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Non-Current Royalty Certificates

+ References

No definition available.

+ Details

Name:	abvx_NonCurrentRoyaltyCertificates
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Other Liabilities, Number Of Transactions

+ References

No definition available.

+ Details

Name:	abvx_OtherLiabilitiesNumberOfTransactions
Namespace Prefix:	abvx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Royalty Certificate, Maximum Amount

+ References

No definition available.

+ Details

Name:	abvx_RoyaltyCertificateMaximumAmount
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Royalty Certificate, Percentage Of Future Sales

+ References

No definition available.

+ Details

Name:	abvx_RoyaltyCertificatePercentageOfFutureSales
Namespace Prefix:	abvx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Royalty Certificates, EIR

+ References

No definition available.

+ Details

Name:	abvx_RoyaltyCertificatesEIR
Namespace Prefix:	abvx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Unwinding Of Discount On Royalties

+ References

No definition available.

+ Details

Name:	abvx_UnwindingOfDiscountOnRoyalties
Namespace Prefix:	abvx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

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

X

- Definition

The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 25
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_FinancialLiabilitiesAtFairValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of increase (decrease) in the fair value measurement of liabilities due to a reasonably possible decrease in an unobservable input.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of increase (decrease) in the fair value measurement of liabilities due to a reasonably possible increase in an unobservable input.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The increase in equity through the issue of equity instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 106
-Subparagraph d
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d_iii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IssueOfEquity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ 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_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The nominal value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ParValuePerShare
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of a reasonably possible decrease in an unobservable input used in fair value measurement of liabilities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of liabilities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of cost related to the issuance of shares.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Details

Name:	ifrs-full_UnobservableInputsAxis=abvx_SharePriceMeasurementInputMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis=abvx_RoyaltyCertificatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=abvx_RoyaltyCertificatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_UnobservableInputsAxis=abvx_ProbabilityOfSuccessMeasurementInputMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_UnobservableInputsAxis=abvx_PeakPenetrationMeasurementInputMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_UnobservableInputsAxis=ifrs-full_WeightedAverageCostOfCapitalMeasurementInputMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=ifrs-full_SharePremiumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: