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Loans (Narrative) (Details) € in Thousands, ₪ in Thousands |  | 1 Months Ended | 12 Months Ended |  |
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Mar. 12, 2019 EUR (€) | May 31, 2028 EUR (€) | Nov. 30, 2027 EUR (€) | Apr. 30, 2019 EUR (€) | Apr. 30, 2019 EUR (€) | May 29, 2018 EUR (€) | May 17, 2018 EUR (€) | Dec. 24, 2014 ILS (₪) | May 16, 2012 ILS (₪) | Feb. 17, 2011 EUR (€) | Dec. 31, 2019 EUR (€) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 EUR (€) | Dec. 31, 2014 ILS (₪) | Dec. 31, 2013 ILS (₪) | Sep. 30, 2018 EUR (€) | May 16, 2012 EUR (€)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  | € 93,320 | € 66,092 |  |  |  |  |
Interest rate basis |  |  |  |  |  |  |  |  |  |  | EURIBOR | EURIBOR |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 3.50% | 3.50% |  |  |  |  |
Spanish subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement | € 18,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis | Euribor 6 months plus a margin of 2% (with a zero interest floor) and repaid semi-annually on June 20 and December 20. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | December 31, 2037 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Debt Equity ratio and holdings | The Facility Agreement provides for mandatory prepayment upon the occurrence of certain events and includes various customary representations, warranties and covenants, including covenants to maintain a DSCR on an aggregate basis not lower than 1.05:1, and not to make distributions unless, among other things: (i) the DSCR, on an aggregate basis, is equal to or higher than 1.15:1.0, (ii) the first instalment of the Project Finance has been repaid, (iii) no amount under the revolving credit tranche has been withdrawn and not fully repaid and no drawdowns of the revolving credit tranche are expected within the next six months, and (iv) the Subsidiaries’ net debt to regulatory value (as such terms are defined in the Facility Agreement) ratio is equal to or higher than 0.7:1. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Spanish subsidiaries [Member] | Swap contract [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Interest rate basis | Euribor 6 month rate with a fixed 6 month rate of approximately 1%, resulting in a fixed annual interest rate of approximately 3%. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date | December 2037 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | € 17,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Photovoltaic Plants Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement | 23,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate nominal purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 14,850 |
Aggregate book value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,600 |
Amount of the VAT facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 80 |
Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement |  |  |  | € 158,500 | € 158,500 |  |  |  |  |  | € 46,622 |  |  |  |  |  |
Interest rate basis |  |  |  | Talasol entered into a swap agreement for an amount equal to at least 95% of the maximum amount of the term facilities and replacing the Euribor 6 month rate with a fixed 6 month rate of approximately 0.9412%. | Euribor 6 mount plus 5.27%. |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  |  | December 31, 2037 |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest |  |  |  |  | 49.00% |  |  |  |  |  |  |  |  |  |  |  |
Description of Debt Equity ratio and holdings |  |  |  | During the construction period, interest payments on the term, revolving debt and VAT facilities will be made on a monthly basis, and semi-annually thereafter (commencing March 31, 2021). The VAT facilities’ interest period, however, remains on a monthly basis. The agreements executed in connection with the Talasol Project Finance provide for mandatory prepayment upon the occurrence of certain events and various customary representations, warranties and covenants, including covenants to maintain a Historic and Projected DSCR not lower than 1.05:1, and not to make distributions in the event that: (i) the Historic and Projected DSCR will be lower than 1.15:1.0 and (ii) the Loan Life Cover Ratio will be lower than 1.20:1.0. The facilities provided by the EIB include certain other representations and undertakings mandated by applicable EU regulation. |  |  |  |  |  |  |  |  |  |  |  |  |
Manara Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement |  |  |  |  |  |  |  |  |  |  | € 1,755 |  |  |  |  |  |
Manara Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Maturity date |  |  |  |  |  |  |  |  |  |  | December 31, 2022 |  |  |  |  |  |
Proportion of ownership interest |  |  |  |  |  |  |  |  |  |  | 75.00% |  |  |  |  |  |
Sheva Mizrakot Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |
Goor Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Maturity period |  |  |  |  |  |  |  |  |  |  | 12 years 2 months 30 days |  |  |  |  |  |
Goor Loan Agreement [Member] | Fifth year [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |
Israeli consortium Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Maturity date |  |  |  |  |  |  |  |  | December 31, 2031 |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  | 4.65% |  |  |  |  |  |  |  | 4.65%
Euro [Member] | Italian Subsidiaries [Member] | Facility Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Interest rate basis |  |  |  |  |  | Euribor 6 month rate with a fixed interest rate of 0.71% |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  | 2.56% |  |  |  |  |  |  |  |  |  |  |
Proceeds from project finance |  |  |  |  |  |  | € 35,900 |  |  |  |  |  |  |  |  |  |
Terms of project finance |  |  |  |  |  |  | The €35.9 million principal amount is divided into: (i) five term loan facilities, one for each Subsidiary, which are to be used to refinance the existing financing of the subsidiaries and for general purposes of the Subsidiaries, in the aggregate amount of €33.7 million with terms ending in May 2028, and (ii) five revolving facilities, one for each Subsidiary, aimed to cover financial needs for the debt service coverage in case of a liquidity shortfall of the Subsidiaries. |  |  |  |  |  |  |  |  |  |
Interest swap agreement amount |  |  |  |  |  | € 25,000 |  |  |  |  |  |  |  |  |  |  |
Percentage of overall amount of term loan facilities |  |  |  |  |  | 75.00% |  |  |  |  |  |  |  |  |  |  |
Euro [Member] | Italian Subsidiaries [Member] | Facility Agreement [Member] | Aggregate amount [Member] | Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Proceeds from project finance |  | € 33,700 | € 2,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Euro [Member] | Goor Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Amount Withdrawn from loan account |  |  |  |  |  |  |  |  |  |  |  |  | € 5,600 |  |  |  |
Euro [Member] | Goor Loan Agreement [Member] | Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  | € 3,510 |  |  |  |  |  |
Euro [Member] | Goor Loan Agreement [Member] | Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement |  |  |  |  |  |  |  |  |  |  | € 2,090 |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 2.50% |  |  |  |  |  |
Euro [Member] | Oude Tonge Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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On-call Credit facility |  |  |  |  |  |  |  |  |  |  | € 100 |  |  |  |  |  |
Euro [Member] | Oude Tonge Loan Agreement [Member] | Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  | € 3,150 |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 3.10% |  |  |  |  |  |
Maturity period |  |  |  |  |  |  |  |  |  |  | 12 years 2 months 30 days |  |  |  |  |  |
Amount Withdrawn from loan account |  |  |  |  |  |  |  |  |  |  |  | € 4,850 | 4,850 |  |  |  |
Euro [Member] | Oude Tonge Loan Agreement [Member] | Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  | € 1,540 |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 2.90% |  |  |  |  |  |
Maturity period |  |  |  |  |  |  |  |  |  |  | 12 years 2 months 30 days |  |  |  |  |  |
Amount Withdrawn from loan account |  |  |  |  |  |  |  |  |  |  |  | 4,850 | 4,850 |  |  |  |
Euro [Member] | Oude Tonge Loan Agreement [Member] | Tranche Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  | € 160 |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 3.40% |  |  |  |  |  |
Maturity period |  |  |  |  |  |  |  |  |  |  | 12 years 2 months 30 days |  |  |  |  |  |
Amount Withdrawn from loan account |  |  |  |  |  |  |  |  |  |  |  | € 4,850 | € 4,850 |  |  |  |
Euro [Member] | Ludan and Ellomay Luxemburg [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of Debt Equity ratio and holdings |  |  |  |  |  |  |  |  |  |  | that Groen Goor will not make distributions or repurchase its shares so long as the equity (including owners loans) to total assets ratio of Groen Goor is less than 40%, (c) that in the event the equity (including owners loans) to total assets ratio of Groen Goor and Groen Gas Oude Tonge will be below 40%, its shareholders will invest the equity required in order to increase this ratio to 40%, pro rata to their holdings in Groen Goor and Groen Gas Oude Tonge and up to a maximum of €1.2 million |  |  |  |  |  |
Euro [Member] | Israeli consortium Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 0
NIS [Member] | Israeli consortium Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement | ₪ |  |  |  |  |  |  |  | ₪ 25,000 | ₪ 80,000 |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  | June 30, 2028 |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  | 4.52% |  |  |  |  |  |  |  |  |
Amount Withdrawn from loan account | ₪ |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 20,000 | ₪ 60,000 |  |
Senior Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Interest rate basis |  |  |  |  |  |  |  |  |  | 200 basis points per annum |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  |  |  | December 31, 2027 |  |  |  |  |  |  |
Senior Loan [Member] | Euro [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement |  |  |  |  |  |  |  |  |  | € 4,100 |  |  |  |  |  |  |
Credit Facility [Member] | Euro [Member] | Goor Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  |  |  |  |  |  |  |  | € 370 |  |  |  |  |  |
Four tranches [Member] | Spanish subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement | 17,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility [Member] | Spanish subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement | € 800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term facility [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement |  |  |  | € 65,900 | € 65,900 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  | annual interest of EURIBOR (with a zero floor and synchronous with the applicable interest period |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | September 30, 2033 |  |  |  |  |  |  |  |  |  |  |  |  |
Description of applicable margin |  |  |  | The applicable margins are: (i) 2.25% until technical completion, (ii) 2% from technical completion until the 5th anniversary of technical completion, (iii) 2.25% from the 5th anniversary of technical completion until the termination date of the financial power swap agreement that Talasol entered into last June (see Note 21) (the “PPA”, i.e., September 30, 2030), and (iv) 2.5% from the termination date of the PPA until the end of the term of the commercial term facility. |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving debt service reserve facility [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  | € 4,450 | 4,450 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  | annual interest of 6 month EURIBOR (with a zero floor) plus a margin determined based on the stage of the Talasol Project |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | September 30, 2033 or (ii) the date on which the commercial term loan set forth under (a) above has been repaid in full. |  |  |  |  |  |  |  |  |  |  |  |  |
Description of applicable margin |  |  |  | The applicable margins are: (i) 2.5% until technical completion, (ii) 2.25% from technical completion until the 5th anniversary of technical completion, (iii) 2.50% from the 5th anniversary of technical completion until the termination date of the PPA, and (iv) 2.75% from the termination date of the PPA until the termination date |  |  |  |  |  |  |  |  |  |  |  |  |
VAT facility [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Loan agreement |  |  |  | € 6,670 | 6,670 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  | annual interest of 1 month EURIBOR (with a zero floor) plus a margin of 2% |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | June 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |
Letter of credit facility [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  | € 12,000 | 12,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  | annual interest of (i) 1.25% for amounts cash covered, and (ii) 2% for any other amounts |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | September 30, 2030 |  |  |  |  |  |  |  |  |  |  |  |  |
Term facility from EIB [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  | € 65,000 | 65,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  | annual interest of EURIBOR synchronous with the applicable interest period plus a margin (expected to be 1.76%) |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | September 30, 2033 |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving debt service reserve facility from EIB [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan agreement |  |  |  | € 4,450 | € 4,450 |  |  |  |  |  |  |  |  |  |  |  |
Interest rate basis |  |  |  | annual interest of 6 month EURIBOR (with a zero floor) plus a margin |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date |  |  |  | September 30, 2033 or (ii) the date on which the commercial term loan set forth under |  |  |  |  |  |  |  |  |  |  |  |  |
Shares in Talasol [Member] | Talasol Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest |  |  |  | 50.10% |  |  |  |  |  |  |  |  |  |  |  |  |

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