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Investee Companies and other investments (Schedule of Composition of Advances on Account of Investments) (Details) € in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 EUR (€)
Disclosure of associates [line items] |  |  |  |
Advances on account of investments | € 774 | $ 825 | € 0 | € 1,554
Development Of Pv Projects In Italy [Member] |  |  |  |
Disclosure of associates [line items] |  |  |  |
Advances on account Talasol Project | € 2,328 |  | € 1,554 |

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- Definition Advances on account of investments. + References No definition available. + Details
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- Definition Advances on account of investments. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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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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Period Type: | duration

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