Statement Of Changes In Equity [Abstract]

ABIVAX - Filing #5984181

Concept	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	262 637 EUR	—	—	—	—	478 905 EUR	—	633,000 EUR	75,000 EUR	40 584 EUR	—	40 584 EUR	176 242 EUR	—	—	196 010 EUR	135 209 EUR	147 740 EUR	—	—	—	—	478 218 EUR	—	629,000 EUR	112,000 EUR	196 010 EUR	7 189 EUR	—	82 770 EUR	—	60 740 EUR	—	150 476 EUR	223,000 EUR	— EUR	7 189 EUR	—	—	—	—	42 452 EUR	25 934 EUR	39 361 EUR	107 578 EUR	— EUR	168,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	176 242 EUR	—	— EUR	176 242 EUR	— EUR	— EUR	—	— EUR	—	—	—	176 242 EUR	—	—	147 740 EUR	147 740 EUR	—	—	—	147 740 EUR	— EUR	— EUR	— EUR	—	— EUR	—	—	—	—	— EUR	—	60 740 EUR	—	— EUR	—	—	—	—	60 740 EUR	—	— EUR	— EUR	—	—	—	—	—	—
Other comprehensive income	— EUR	—	31,000 EUR	—	— EUR	— EUR	—	187,000 EUR	—	—	—	219,000 EUR	—	—	225,000 EUR	— EUR	—	—	—	225,000 EUR	112,000 EUR	— EUR	112,000 EUR	—	— EUR	—	—	—	—	— EUR	—	235,000 EUR	—	235,000 EUR	—	—	—	—	— EUR	235,000 EUR	— EUR	— EUR	—	—	—	—	—	—
Comprehensive income	176 242 EUR	—	31,000 EUR	—	— EUR	— EUR	—	187,000 EUR	—	—	—	176 461 EUR	—	—	147 516 EUR	147 740 EUR	—	—	—	—	112,000 EUR	— EUR	112,000 EUR	—	— EUR	—	—	—	—	— EUR	—	60 506 EUR	—	235,000 EUR	—	—	—	—	60 740 EUR	—	— EUR	— EUR	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	— EUR	—	120,000 EUR	—	— EUR	— EUR	—	— EUR	—	—	—	120,000 EUR	—	—	—	— EUR	—	—	—	10,000 EUR	10,000 EUR	— EUR	— EUR	—	— EUR	—	—	—	—	— EUR	—	28,000 EUR	—	28,000 EUR	—	—	—	—	—	—	— EUR	— EUR	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	— EUR	—	20 224 EUR	20 224 EUR	— EUR	— EUR	—	— EUR	—	—	—	—	—	—	8 179 EUR	— EUR	—	—	—	—	8 179 EUR	— EUR	— EUR	—	— EUR	—	—	—	—	— EUR	—	—	—	1 164 EUR	—	—	—	—	— EUR	1 164 EUR	— EUR	— EUR	—	—	—	—	—	—