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Investee Companies and other investments (Narrative) (Details) € in Thousands, ₪ in Thousands, $ in Thousands | 1 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 30, 2018 EUR (€) | Jun. 30, 2018 ILS (₪) | Jun. 30, 2018 EUR (€) | Jul. 13, 2018 | Jun. 30, 2018 USD ($) | Feb. 23, 2017 USD ($) | Nov. 25, 2010 USD ($) | Nov. 25, 2010 ILS (₪)
Dorad Energy Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Annual interest rate |  |  |  | 0.40% |  |  |  |
Claims amount payment | $ |  |  |  |  |  | $ 183,368 |  |
Dorad Energy Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Percentage of share capital holds |  | 18.75% | 18.75% |  |  |  |  |
Amount financial agreement guarantees by direct share | € |  |  | € 40,400 |  |  |  |  |
Amount financial agreement guarantees by indirect share | € |  |  | € 3,800 |  |  |  |  |
Dorad Energy Ltd [Member] | NIS [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Amount financial agreement guarantees by direct share | ₪ |  | ₪ 172,000 |  |  |  |  |  |
Amount financial agreement guarantees by indirect share | ₪ |  | ₪ 16,000 |  |  |  |  |  |
Zorlu Enerji Elektrik Uretim A.S [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Percentage of share capital holds |  | 25.00% | 25.00% |  |  |  |  |
ZorlyMember | USD [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Claims amount payment | $ |  |  |  |  | $ 140,000 |  |  |
Claims interest payment amount | $ |  |  |  |  | 43,000 |  |  |
Dorad [Member] | USD [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Refund amount to Dorad | $ |  |  |  |  | $ 24,000 |  |  |
Luzon Group [Member] | NIS [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Payment received for management and entrepreneurship services | ₪ |  |  |  |  |  |  |  | ₪ 49,400
Recovery of amounts committed | ₪ |  |  |  |  |  |  |  | ₪ 49,400
Luzon Group [Member] | USD [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Payment received for management and entrepreneurship services | $ |  |  |  |  |  |  | $ 12,700 |
Oude Tonge Project [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Amount of loan withdrew | € | € 1,700 |  |  |  |  |  |  |
Oude Tonge Project [Member] | Tranche one [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Annual interest rate | 2.90% |  |  |  |  |  |  |
Amount of loan withdrew | € | € 1,540 |  |  |  |  |  |  |
Loan interest period | 12.25 years |  |  |  |  |  |  |
Oude Tonge Project [Member] | Tranche Two [Member] |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |
Annual interest rate | 3.40% |  |  |  |  |  |  |
Amount of loan withdrew | € | € 160 |  |  |  |  |  |  |
Loan interest period | 12.25 years |  |  |  |  |  |  |

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