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Other information about investments (Details 7) | 12 Months Ended |  |
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Dec. 31, 2017 EUR (€) | Dec. 31, 2017 GBP (£) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 XAF ( ) | Dec. 31, 2017 UAH (₴) | Dec. 31, 2017 EGP (ج.م.) | Dec. 31, 2017 CAD ($) | Dec. 31, 2017 TND (د.ت) | Dec. 31, 2017 TRY (₺) | Dec. 31, 2017 KZT (₸) | Dec. 31, 2017 MZN (MT) | Dec. 31, 2017 VEF ( ) | Dec. 31, 2017 KWD (د.ك) | Dec. 31, 2017 HRK (kn) | Dec. 31, 2017 AED (د.إ) | Dec. 31, 2016 EUR (€)
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | € |  | € 4,005,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 4,005,000,000
Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Mozambique Rovuma Venture SpA(†) (former Eni East Africa SpA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | San Donato Milanese (MI) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Mozambique |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | € |  | € 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Leverage Equity Ratio |  | 35.71% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | J.O. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] | Eni SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 35.71% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 64.29% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Società Oleodotti Meridionali -SOM SpA(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | San Donato Milanese (MI) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | € |  | € 3,085,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Leverage Equity Ratio |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | J.O. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] | Eni SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Agiba Petroleum Co(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | ج.م. 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Angola LNG Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Hamilton (Bermuda) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Angola |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | $ 10,907,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 86.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] | Eni Angola Prod.BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Angola Prod.BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 13.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Ashrafi Island Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Three [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Three [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Barentsmorneftegaz Sàrl(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Russia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Four [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Four [Member] | Eni Energy Russia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Energy Russia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Cabo Delgado Gas Development Limitada(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Maputo (Mozambique) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Mozambique |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | MT |  |  |  |  |  |  |  |  |  |  |  | MT 2,500,000 |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Five [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Five [Member] | Eni Mozam.LNG H. BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Mozam.LNG H. BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Cardón IV SA(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Caracas (Venezuela) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  |  |  |  |  |  |  |  |  | 17,210,000 |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Six [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Six [Member] | Eni Venezuela BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Venezuela BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Compañia Agua Plana SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Caracas (Venezuela) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  |  |  |  |  |  |  |  |  | 100 |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seven [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seven [Member] | Eni Venezuela BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Venezuela BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 26.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Coral FLNG SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Maputo (Mozambique) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Mozambique |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | MT |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eight [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eight [Member] | Eni Mozam.LNG H. BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Mozam.LNG H. BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Coral South FLNG DMCC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dubai (United Arab Emirates) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Arab Emirates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | د.إ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | د.إ 500,000 |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nine [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nine [Member] | Eni Mozam.LNG H. BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Mozam.LNG H. BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ten [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | East Delta Gas Co (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ten [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 62.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ten [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 37.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eleven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | East Kanayis Petroleum Co(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eleven [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eleven [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twelve [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | East Obaiyed Petroleum Company(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twelve [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twelve [Member] | Ieoc SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Thirteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | El-Fayrouz Petroleum Co(†) (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Thirteen [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Thirteen [Member] | Ieoc Exploration BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | El Temsah Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourteen [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourteen [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Enstar Petroleum Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Calgary (Canada) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  |  |  |  |  | $ 0.1 |  |  |  |  |  |  |  |  |
Shareholders |  | Unimar Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | Fedynskmorneftegaz Sàrl(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Russia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixteen [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixteen [Member] | Eni Energy Russia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Energy Russia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventeen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1] | InAgip doo(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Zagreb (Croatia) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Croatia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | kn |  |  |  |  |  |  |  |  |  |  |  |  |  |  | kn 54,000 |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventeen [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventeen [Member] | Eni Croatia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Croatia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Karachaganak Petroleum Operating BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | € |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighteen [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 70.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighteen [Member] | Agip Karachag.BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Agip Karachag.BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 29.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nineteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Karachaganak Project Development Ltd (KPD) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Reading, Berkshire (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | £ |  |  | £ 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nineteen [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 62.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nineteen [Member] | Agip Karachag.BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Agip Karachag.BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 38.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Khaleej Petroleum Co Wll |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Safat (Kuwait) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kuwait |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | د.ك |  |  |  |  |  |  |  |  |  |  |  |  |  | د.ك 250,000 |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty [Member] | Eni Middle E. Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Middle E. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Liberty National Development Co Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Wilmington (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ | [3] |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty One [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 67.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty One [Member] | Eni Oil & Gas Inc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil & Gas Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 32.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name | [1],[2] | Llc ‘Westgasinvest’(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Lviv (Ukraine) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ukraine |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | ₴ |  |  |  |  |  | ₴ 2,000,000 |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Two [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 49.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Two [Member] | Eni Ukraine Hold.BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Ukraine Hold.BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Mediterranean Gas Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Three [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Three [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Mellitah Oil & Gas BV(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Libya |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | € |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Four [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Four [Member] | Eni North Africa BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni North Africa BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Nile Delta Oil Co Nidoco |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Five [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 62.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Five [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 37.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | North Bardawil Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Six [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Six [Member] | Ieoc Exploration BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | North El Burg Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Seven [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Seven [Member] | Ieoc SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Petrobel Belayim Petroleum Co(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Eight [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Eight [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | PetroBicentenario SA(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Caracas (Venezuela) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  |  |  |  |  |  |  |  |  | 379,000,000 |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Nine [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Nine [Member] | Eni Lasmo Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | PetroJunín SA(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Caracas (Venezuela) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  |  |  |  |  |  |  |  |  | 2,402,100,000 |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty [Member] | Eni Lasmo Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | PetroSucre SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Caracas (Venezuela) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  |  |  |  |  |  |  |  |  | 220,300,000 |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty One [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty One [Member] | Eni Venezuela BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Venezuela BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 26.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Pharaonic Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Two [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Two [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Port Said Petroleum Co(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Three [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Three [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Raml Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 77.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 22.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Ras Qattara Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Five [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 62.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Five [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 37.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Rovuma Basin LNG Land Limitada(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Maputo (Mozambique) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Mozambique |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | MT |  |  |  |  |  |  |  |  |  |  |  | MT 140,000 |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Six [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Six [Member] | Mozamb. Rov. V. SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Mozamb. Rov. V. SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Shatskmorneftegaz Sàrl(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Russia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Seven [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Seven [Member] | Eni Energy Russia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Energy Russia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Shorouk Petroleum Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Eight [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Eight [Member] | Ieoc Production BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Société Centrale Electrique du Congo SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Pointe-Noire (Republic of the Congo) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Republic of the Congo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  | 44,732,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Nine [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Nine [Member] | Eni Congo SA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Congo SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Société Italo Tunisienne d’Exploitation Pétrolière SA(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Tunisi (Tunisia) Tunisia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | د.ت |  |  |  |  |  |  |  |  | د.ت 5,000,000 |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty [Member] | Eni Tunisia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Tunisia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Sodeps - Société de Developpement et d’Exploitation du Permis du Sud SA(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Tunisi (Tunisia) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Tunisia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | د.ت |  |  |  |  |  |  |  |  | د.ت 100,000 |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty One [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty One [Member] | Eni Tunisia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Tunisia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Tapco Petrol Boru Hatti Sanayi ve Ticaret AS(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Istanbul (Turkey) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Turkey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | ₺ |  |  |  |  |  |  |  |  |  | ₺ 9,850,000 |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Two [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Two [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Tecninco Engineering Contractors Llp(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Aksai (Kazakhstan) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | ₸ |  |  |  |  |  |  |  |  |  |  | ₸ 29,478,455 |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Three [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Three [Member] | EniProgetti SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | EniProgetti SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Thekah Petroleum Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Four [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Four [Member] | Ieoc Exploration BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Unimar Llc(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Houston (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ | [3] |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Five [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Five [Member] | Eni America Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni America Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | United Gas Derivatives Co |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 195,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Six [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Six [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | VIC CBM Ltd(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 1,315,912 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Seven [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Seven [Member] | Eni Lasmo Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Virginia Indonesia Co CBM Ltd(†) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 631,640 |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Eight [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Eight [Member] | Eni Lasmo Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Virginia Indonesia Co Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Wilmington (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | 10 |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Unimar Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Virginia International Co Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Wilmington (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  | $ 10 |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Unimar Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | West Ashrafi Petroleum Co(†) (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  | ج.م. 20,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valutation method | [2] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty One [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty One [Member] | Ieoc Exploration BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Ieoc Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Controlling interest: Ecofuel SpA 50.00 Third parties 50.00
[2] | Jointly controlled entity.
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