Borrowings Maturity, Deferral Period

No definition available.

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Namespace Prefix:	abvx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Borrowings Maturity, Extension Term

+ References

No definition available.

+ Details

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Namespace Prefix:	abvx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Borrowings Maturity, Term

+ References

No definition available.

+ Details

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Namespace Prefix:	abvx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Borrowings, State Guaranteed Premium

+ References

No definition available.

+ Details

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

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard
-URIDate 2025-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
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

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

- Definition

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
-Paragraph 17
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_d&doctype=Standard
-URIDate 2025-03-27

+ Details

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

- References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 20
-IssueDate 2025-01-01
-Paragraph 39
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=20&code=ifrs-tx-2025-en-r&anchor=para_39_b&doctype=Standard
-URIDate 2025-03-27

+ Details

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

- Details

Name:	ifrs-full_BorrowingsByNameAxis=abvx_PretGarantiParLEtatPGEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financial liabilities - State guaranteed loan – “PGE” (Details) - EUR (€) € in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2021	Jun. 30, 2020	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]
Subsidies				€ 0	€ 4,140	€ 81
PGE
Disclosure of detailed information about borrowings [line items]
Borrowings, maturity term		12 months
Borrowings, interest rate	0.58%	0.25%
Borrowings maturity, extension term	5 years	5 years
Borrowings maturity, deferral period	1 year
Borrowings, state guaranteed premium	€ 138
Subsidies							€ 377
Repayments of borrowings, classified as financing activities			€ 1,264