Statement Of Changes In Equity [Abstract]

Transgene - Filing #2810948

Concept	2023-01-01 to 2023-12-31	2023-01-01 to 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	As at 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	2023-01-01 to 2023-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 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	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	As at 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	83 432 EUR	22 328 EUR	—	—	—	432,000 EUR	—	71 156 EUR	—	50 426 EUR	15 612 EUR	642,000 EUR	—	—	—	—	50 628 EUR	32 804 EUR	—	808,000 EUR	450,000 EUR	70 813 EUR	50 102 EUR	37 841 EUR	—	—	—	—	19 536 EUR	2 933 EUR	31 092 EUR	1 423 EUR	67 209 EUR	67 441 EUR	48 886 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	22 328 EUR	22 328 EUR	—	—	- EUR	22 328 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	- EUR	- EUR	- EUR	32 804 EUR	—	—	- EUR	—	—	—	—	—	- EUR	32 804 EUR	32 804 EUR	- EUR	—	—	—	—	—	—	—
Other comprehensive income	192,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	973,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	22 520 EUR	22 328 EUR	—	—	- EUR	22 520 EUR	- EUR	—	- EUR	—	- EUR	—	—	—	192,000 EUR	- EUR	- EUR	31 831 EUR	—	—	- EUR	—	—	—	—	—	973,000 EUR	32 804 EUR	31 831 EUR	- EUR	—	—	—	—	—	—	—
Issue of equity	—	- EUR	—	—	- EUR	- EUR	- EUR	—	- EUR	—	- EUR	—	—	—	- EUR	- EUR	- EUR	—	—	—	- EUR	—	—	—	—	—	- EUR	- EUR	- EUR	- EUR	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	- EUR	—	—	- EUR	1,000 EUR	1,000 EUR	—	- EUR	—	- EUR	—	—	—	- EUR	- EUR	212,000 EUR	—	—	—	- EUR	—	—	—	—	—	- EUR	- EUR	212,000 EUR	- EUR	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	- EUR	—	—	- EUR	290,000 EUR	- EUR	—	290,000 EUR	—	- EUR	—	—	—	- EUR	- EUR	- EUR	—	—	—	- EUR	—	—	—	—	—	- EUR	- EUR	2 675 EUR	2 675 EUR	—	—	—	—	—	—	—