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Investee Companies and other investments (Schedule of Composition of Advances on Account of Investments) (Details) - EUR (€) € in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of associates [line items]
Advances on account of investments			€ 8,000
Total advances on account of investment	€ 883	€ 798
Manara Project [Member]
Disclosure of associates [line items]
Advances on account of investments	€ 883	€ 798

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- Definition

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+ References

No definition available.

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- Definition

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+ References

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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