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Company Information - Research tax credit (Details) - EUR (€) € in Millions | 1 Months Ended | 12 Months Ended
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Jan. 31, 2020 | Dec. 31, 2020
Provision for CIR risk related to tax audit for the year ended December 31, 2018 |  |
Disclosure of other provisions [line items] |  |
French Research Tax Credit (CIR), payments received | € 4.2 |
Provision for CIR risk related to tax audit for the year ended December 31, 2019 |  |
Disclosure of other provisions [line items] |  |
French Research Tax Credit (CIR), payments received | € 4.3 |
Provision for CIR risk related to tax audit for the year ended December 31, 2018 and 2019 |  |
Disclosure of other provisions [line items] |  |
French Research Tax Credit (CIR), payments received |  | € 8.4

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- Definition Amount of cash inflow from French Research Tax Credit (CIR). + References No definition available. + Details
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