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Shareholders' Equity - Characteristics of BSPCE share warrants plans (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 20, 2018 item | Dec. 31, 2020 € / shares shares | Dec. 31, 2019 shares | Dec. 31, 2018 shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of bonus shares granted |  |  | 10,000 |
BSPCE plans |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of share warrants outstanding |  | 88 | 88 | 362
Number of share per warrant |  | 100 |  |
Number of bonus shares granted | item | 180,300 |  |  |
BSPCE 2013-1 |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |
Number of share per warrant |  | 100 |  |
Number of bonus shares granted |  | 9,027 |  |
BSPCE exercise price () | € / shares |  | € 58.50 |  |

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The weighted average exercise price of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
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