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Impairment for Non-financial Assets - Schedule of recognized impairment losses (Details) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Schedule of recognized impairment losses [Line Items] |  |  |
Total | € 81,999 |  |
Digital Assets [Member] |  |  |
Schedule of recognized impairment losses [Line Items] |  |  |
Total | 66,052 |  |
Intangible Assets and Goodwill [Member] |  |  |
Schedule of recognized impairment losses [Line Items] |  |  |
Total | 15,912 |  |
Property and Equipment [Member] |  |  |
Schedule of recognized impairment losses [Line Items] |  |  |
Total | € 35 |  |

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- Definition The amount of impairment of non-financial assets. + References No definition available. + Details
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Balance Type: | debit
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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. + References No definition available. + Details
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- Details
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |