| Business combinations and capital reorganization - Calculation of Good will (Details) - MOMA € in Thousands | Jun. 07, 2022  EUR (€) | 
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| Disclosure of detailed information about business combination [line items] | |
| Consideration transferred | € 59,986 | 
| Less: fair value of identifiable net assets acquired | 49,262 | 
| Goodwill | € 10,724 | 
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- Definition The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available. 
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- Definition The amount recognised as of the business combination's acquisition date for goodwill. [Refer: Goodwill; Business combinations [member]] Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- Definition The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Business combinations [member]] Reference 1: http://www.xbrl.org/2003/role/exampleRef 
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- Details 
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