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Other information about investments (Details 2) | 12 Months Ended |  |
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Dec. 31, 2017 EUR (€) | Dec. 31, 2017 GBP (£) | Dec. 31, 2017 USD ($) | Dec. 31, 2017 NGN (₦) | Dec. 31, 2017 ARS ($) | Dec. 31, 2017 XAF ( ) | Dec. 31, 2017 BRL (R$) | Dec. 31, 2017 NOK (kr) | Dec. 31, 2017 CDF (CF) | Dec. 31, 2017 AUD ($) | Dec. 31, 2017 GHS (GH₵) | Dec. 31, 2017 MXN ($) | Dec. 31, 2017 TTD ($) | Dec. 31, 2017 UAH (₴) | Dec. 31, 2017 EGP (ج.م.) | Dec. 31, 2017 DZD (دج) | Dec. 31, 2017 CAD ($) | Dec. 31, 2017 RUB (₽) | Dec. 31, 2016 EUR (€)
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 4,005,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 4,005,000,000
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Agip Caspian Sea BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,005 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Agip Energy and Natural Resources (Nigeria) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Abuja (Nigeria) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Nigeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ₦ |  |  |  |  | ₦ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 95.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Two [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Agip Karachaganak BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,005 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Agip Oil Ecuador BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ecuador |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Agip Oleoducto de Crudos Pesados BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ecuador |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren (Cyprus) Holdings Ltd (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Nicosia (Cyprus) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Cyprus |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 1,710 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En.(Berm)Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Energy (Bermuda) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Hamilton (Bermuda) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | $ 12,002 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren Energy Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Energy Congo Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Tortola (British Virgin Islands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Republic of the Congo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En.(Berm)Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Energy (Egypt) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | £ 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren Energy Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ten [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Energy India Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren Energy Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eleven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Energy Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 28,819,023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eleven [Member] | Eni UK Holding Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Holding Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eleven [Member] | Eni UK Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twelve [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Energy Ship Management Ltd (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Nicosia (Cyprus) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Cyprus |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 3,420 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twelve [Member] | Burren (Cyp) Hold.Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren(Cyp) Hold.Ltd (L) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twelve [Member] | Burren En.(Berm) Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En. (Berm)Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Thirteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Burren Shakti Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Hamilton (Bermuda) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 65,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En. India Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fourteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Abu Dhabi BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni AEP Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Pakistan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 73,471,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Algeria Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Algeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventeen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Algeria Ltd Sarl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Algeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Algeria Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Algeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Nineteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ambalat Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni America Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 72,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UHL Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Angola Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Angola |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Angola Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Angola |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Argentina Exploración y Explotación SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Buenos Aires (Argentina) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Argentina |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  |  |  | $ 24,136,336 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Three [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 95.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Three [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Twenty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Arguni I Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Australia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Australia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni BB Petroleum Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Petroleum Co Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni BTC Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 34,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesTwenty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Bukat Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Bulungan BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Canada Holding Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Calgary (Canada) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1,453,200,001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni CBM Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 2,210,728 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni China BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | China |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Congo SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Pointe - Noire (Republic of the Congo) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Republic of the Congo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 17,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.005% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] | Eni E&P Holding BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni E&P Holding BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Four [Member] | Eni Int. NA NV Sarl [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Int. NA NV Sarl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.005% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Cote d' Ivoire |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ivory Coast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Croatia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Croatia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Cyprus Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Nicosia (Cyprus) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Cyprus |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 2,005 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Dacion BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 90,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | SubsidiariesThirty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Denmark BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Greenland |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni do Brasil Investimentos em Exploração e Produção de Petróleo Ltda |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Rio de Janeiro (Brazil) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Brazil |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | R$ |  |  |  |  |  |  |  | R$ 1,593,415,000 |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni East Sepinggan Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Elgin/Franklin Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Energy Russia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Engineering E&P Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Exploration & Production Holding BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 29,832,777.12 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Gabon SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Libreville (Gabon) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Gabon |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | |  |  |  |  |  |  | 13,132,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ganal Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Gas & Power LNG Australia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Forty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ghana Exploration and Production Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Accra (Ghana) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ghana |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | GH₵ |  |  |  |  |  |  |  |  |  |  |  | GH₵ 21,412,500 |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Hewett Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Aberdeen (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 3,036,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Hydrocarbons Venezuela Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 8,050,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni India Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | India |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 44,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULX Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Indonesia Ots 1 Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Grand Cayman (Cayman Islands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni International NA NV Sarl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Investments Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 750,050,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Six [Member] | Eni UK Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Six [Member] | Eni SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Iran BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Iran |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Iraq BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Iraq |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Fifty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ireland BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ireland |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Isatay BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni JPDA 03-13 Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 250,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni JPDA 06-105 Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Perth (Australia) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  |  |  |  |  |  |  |  | $ 80,830,576 |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni JPDA 11-106 BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Kenya BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Kenya |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Krueng Mane Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 337,638,724.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Six [Member] | Eni UK Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Six [Member] | Eni Investments Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Investments Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Lebanon BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Liberia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Liberia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Sixty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Liverpool Bay Operating Co Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni LNS Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 80,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Marketing Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Petroleum Co Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Maroc BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Morocco |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Mexico S. de RL de CV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Lomas De Chapultepec, Mexico City (Mexico) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Mexico |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000 |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Three [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Three [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Middle EastBV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Middle East Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULT Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni MOG Ltd (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 220,711,147.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Six [Member] | Eni Lasmo Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Six [Member] | Eni LNS Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni LNS Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Montenegro BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Montenegro |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Mozambique Engineering Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Seventy Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Mozambique LNG Holding BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Muara Bakau BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Myanmar BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Myanmar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Norge AS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Forus (Norway) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Norway |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | kr |  |  |  |  |  |  |  |  | kr 278,000,000 |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni North Africa BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Libya |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni North Ganal Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Oil & Gas Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 100,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni America Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Oil Algeria Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Algeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 450,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULX Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Oman BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Eighty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Pakistan Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Pakistan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 90,087 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULX Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Pakistan (M) Ltd Sàrl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Pakistan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Petroleum Co Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 156,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety One [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 36.14% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety One [Member] | Eni SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 63.86% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Petroleum US Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni BB Petroleum Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Portugal BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Portugal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Rapak Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni RD Congo SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Kinshasa (Democratic Republic of the Congo) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Democratic Republic of the Congo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | CF |  |  |  |  |  |  |  |  |  | CF 750,000,000 |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Five [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Five [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Rovuma Basin BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Mozambique LNG H. BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni South Africa BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Republic of South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni South China Sea Ltd Sarl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Luxembourg (Luxembourg) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | China |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Ninety Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni TNS Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Aberdeen (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Trinidad and Tobago Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Port of Spain (Trinidad and Tobago) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Trinidad and Tobago |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,181,880 |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Tunisia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Tunisia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Turkmenistan Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Hamilton (Bermuda) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Turkmenistan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En.(Berm)Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni UHL Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULT Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni UKCS Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni UK Holding Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 424,050,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Five [Member] | Eni UK Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Five [Member] | Eni Lasmo Plc [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni UK Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ukraine Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ukraine Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Kiev (Ukraine) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ukraine |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ₴ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₴ 42,004,757.64 |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Eight [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Eight [Member] | Eni Ukraine Hold.BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Ukraine Hold.BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ukraine Shallow Waters BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Ukraine |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Ukraine Hold.BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Ten [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni ULT Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 93,215,492.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Eleven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni ULX Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 200,010,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULT Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twelve [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni USA Gas Marketing Llc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Marketing Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni USA Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil & Gas Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Fourteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni US Operating Co Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Dover, Delaware (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | USA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Petroleum Co Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Fifteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Venezuela BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Venezuela E&P Holding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Sixteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Venezuela E&P Holding SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Bruxelles (Belgium) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Belgium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 963,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Sixteen [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Sixteen [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Seventeen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Ventures Plc (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 278,050,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Seventeen [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Seventeen [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Eighteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Vietnam BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Vietnam |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Nineteen [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni West Timor Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Indonesia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eni Yemen Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | £ |  |  | £ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren Energy Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | EniProgetti Egypt Ltd (former Tecnomare Egypt Ltd) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ج.م. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ج.م. 50,000 |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty One [Member] | Eni SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty One [Member] | Eni Progetti SpA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | EniProgetti SpA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Eurl Eni Algérie |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Algiers (Algeria) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Algeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | دج |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | دج 1,000,000 |  |  |
Shareholders |  | Eni Algeria Ltd Sàrl |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Eq. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | First Calgary Petroleums LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Wilmington (USA) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Algeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Three [Member] | Eni Canada Hold. Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Canada Hold. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Three [Member] | FCP Partner Co ULC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | FCP Partner Co ULC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | First Calgary Petroleums Partner Co ULC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Calgary (Canada) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10 |  |
Shareholders |  | Eni Canada Hold. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Five [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Ieoc Exploration BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Ieoc Production BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Egypt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital |  | € 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Seven [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Lasmo Sanga Sanga Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Hamilton (Bermuda) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 12,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Lasmo Plc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Liverpool Bay Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | London (United Kingdom) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni ULX Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Nine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Nigerian Agip CPFA Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Lagos (Nigeria) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Nigeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ₦ |  |  |  |  | 1,262,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Nine [Member] | NAOC Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | NAOC Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 98.02% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Nine [Member] | Agip En Nat Res.Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Agip En Nat Res.Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Twenty Nine [Member] | Nigerian Agip E. Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Nigerian Agip E. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Nigerian Agip Exploration Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Abuja (Nigeria) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Nigeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ₦ |  |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.01% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Nigerian Agip Oil Co Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Abuja (Nigeria) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Nigeria |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ₦ |  |  |  |  | ₦ 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty One [Member] | Eni International BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni International BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.89% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty One [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.11% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | OOO ‘Eni Energhia’ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Moscow (Russia) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Russia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | ₽ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₽ 2,000,000 |
% Equity ratio |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | F.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Two [Member] | Eni Oil Holdings BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Oil Holdings BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 0.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Two [Member] | Eni Energy Russia BV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Energy Russia BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Zetah Congo Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Nassau (Bahamas) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Republic of the Congo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | 300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Three [Member] | Eni Congo SA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Congo SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 66.67% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Three [Member] | Burren En.Congo Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En.Congo Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company name |  | Zetah Kouilou Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office |  | Nassau (Bahamas) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of operation |  | Republic of the Congo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Capital | $ |  |  |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Method used to account for investments in subsidiaries | [1] | Co. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Four [Member] | Eni Congo SA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Eni Congo SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 54.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Four [Member] | Burren En.Congo Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Burren En.Congo Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 37.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outside Italy [Member] | Exploration & Production [Member] | Subsidiaries Hundred Thirty Four [Member] | Third parties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shareholders |  | Third parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% Ownership |  | 8.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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