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Trade Payables and Other Current Liabilities - Additional information (Details) - EUR (€) € in Millions | Oct. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Aug. 17, 2018
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Provision for CIR risk related to tax audit for the years ended December 31, 2013, 2014 and 2015 |  |  |  |
TradePayablesAndOtherCurrentLiabilities [line items] |  |  |  |
Payables For Payroll Taxes |  |  | € 1.9 | € 1.9
Provision for tax audit for the years ended December 31, 2016 and December 31, 2017 |  |  |  |
TradePayablesAndOtherCurrentLiabilities [line items] |  |  |  |
Payables For Payroll Taxes | € 1.2 | € 1.2 |  |

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- Definition Amount payable by the company for payroll taxes including penalties and late payment interest. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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- Details
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Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |