Statement Of Comprehensive Income [Abstract]

Transgene - Filing #2816866

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Statement of comprehensive income [abstract]
Profit (loss)	19 536 EUR	-  EUR	-  EUR	-  EUR	-  EUR	19 536 EUR	19 536 EUR	-  EUR	-  EUR	-  EUR	17 231 EUR	-  EUR	17 231 EUR	17 231 EUR	-  EUR	-  EUR
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	-  EUR	445,000 EUR	-  EUR	-  EUR	-  EUR	445,000 EUR	445,000 EUR	-  EUR	-  EUR	-  EUR	56,000 EUR	-  EUR	56,000 EUR	-  EUR	56,000 EUR	-  EUR
Other comprehensive income, before tax, gains (losses) on hedging instruments that hedge investments in equity instruments	—	—	—	—	—	—	61,000 EUR	—	—	—	70,000 EUR	—	—	—	—	—
Other comprehensive income	-  EUR	61,000 EUR	-  EUR	-  EUR	-  EUR	61,000 EUR	372,000 EUR	-  EUR	-  EUR	-  EUR	7,000 EUR	-  EUR	70,000 EUR	-  EUR	70,000 EUR	-  EUR
Comprehensive income	19 536 EUR	372,000 EUR	-  EUR	-  EUR	-  EUR	19 908 EUR	19 908 EUR	-  EUR	-  EUR	-  EUR	17 224 EUR	-  EUR	17 224 EUR	17 231 EUR	7,000 EUR	-  EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	—	-  EUR	—	—	—	-  EUR	—	—	—	—	—