Compensation of Corporate Officers - Summary of Compensation Paid to Officers (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Chairman and Chief Executive Officer
Disclosure Of Compensation Of Corporate Officers [Line Items]
Short-term employee benefits (gross + employer's social contributions, paid)		€ 1,338	€ 1,569
Share-based payment transactions		109	104
Director fees Genfit Corp (net)		22	30
TOTAL		1,469	€ 1,703
Chief Executive Officer
Disclosure Of Compensation Of Corporate Officers [Line Items]
Short-term employee benefits (gross + employer's social contributions, paid)	€ 534	140
Share-based payment transactions	41
TOTAL	€ 575	€ 140

Disclosure of compensation of corporate officers.

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Key management personnel compensation, director fees of subsidiary.

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The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

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The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

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The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

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