XML 140 R214.htm IDEA: XBRL DOCUMENT
v3.20.1

Other information about investments - Joint arrangements and associates - Refining Marketing and Chemical (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 KRW (₩) | Dec. 31, 2019 GHS (GH₵) | Dec. 31, 2019 AED (د.إ) | Dec. 31, 2019 CHF (SFr) | Dec. 31, 2019 SGD ($) | Dec. 31, 2019 EGP (ج.م.) | Dec. 31, 2019 TND (د.ت) | Dec. 31, 2019 VEF ( ) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 EUR (€) | Dec. 31, 2018 EUR (€)
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | € 4,005,000,000 | € 4,005,000,000
ENI SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 4,005,358,876 | € 4,005,358,876
Refining & Marketing | Italy | Joint Arrangement Or Associate One [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Arezzo Gas SpA (†) |  |  |  |  |  |  |  |  |  |
Registered office | Arezzo |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 394,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate One [Member] | Eni Fuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate One [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Two [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | CePIM Centro Padano Interscambio Merci SpA |  |  |  |  |  |  |  |  |  |
Registered office | Fontevivo (PR) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 6,642,928.32 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Two [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 55.22% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Two [Member] | Ecofuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 44.78% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Three [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Consorzio Operatori GPL di Napoli |  |  |  |  |  |  |  |  |  |
Registered office | Napoli |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 102,000 |
Consolidation or valuation method | Co. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Three [Member] | Eni Fuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 25.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Three [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 75.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Four [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Costiero Gas Livorno SpA(†) |  |  |  |  |  |  |  |  |  |
Registered office | Livorno |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 26,000,000 |
% Equity ratio | 65.00% |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | J.O. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Four [Member] | Eni Fuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 65.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Four [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 35.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Five [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Disma SpA |  |  |  |  |  |  |  |  |  |
Registered office | Segrate (MI) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 2,600,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Five [Member] | Eni Fuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 25.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Five [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 75.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Six [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Livorno LNG Terminal SpA |  |  |  |  |  |  |  |  |  |
Registered office | Livorno |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 200,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Six [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Six [Member] | Costiero Gas Liv SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Seven [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Porto Petroli di Genova SpA |  |  |  |  |  |  |  |  |  |
Registered office | Genova |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 2,068,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Seven [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 59.50% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Seven [Member] | Ecofuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 40.50% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Eight [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Raffineria di Milazzo ScpA(†) |  |  |  |  |  |  |  |  |  |
Registered office | Milazzo (ME) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 171,143,000 |
% Equity ratio | 50.00% |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | J.O. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Eight [Member] | ENI SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Eight [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Nine [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Seram SpA |  |  |  |  |  |  |  |  |  |
Registered office | Fiumicino (RM) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 852,000 |
Consolidation or valuation method | Co. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Nine [Member] | ENI SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 25.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Nine [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 75.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Ten [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Sigea Sistema Integrato Genova Arquata SpA |  |  |  |  |  |  |  |  |  |
Registered office | Genova |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 3,326,900 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Ten [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 65.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Ten [Member] | Ecofuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 35.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Eleven [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Società Oleodotti Meridionali - SOM SpA(†) |  |  |  |  |  |  |  |  |  |
Registered office | San Donato Milanese (MI) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 3,085,000 |
% Equity ratio | 70.00% |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | J.O. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Eleven [Member] | ENI SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 70.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Eleven [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 30.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Twelve [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Termica Milazzo Srl(†) |  |  |  |  |  |  |  |  |  |
Registered office | Milazzo (ME) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 100,000 |
% Equity ratio | 50.00% |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | J.O. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Italy | Joint Arrangement Or Associate Twelve [Member] | Raff. Milazzo ScpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 100.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Thirteen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Abu Dhabi Oil Refining Company (TAKREER) |  |  |  |  |  |  |  |  |  |
Registered office | Abu Dhabi (United Arab Emirates) |  |  |  |  |  |  |  |  |  |
Country of operation | United Arab Emirates |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  |  |  |  |  |  | $ 500,000,000 |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Thirteen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Thirteen [Member] | Eni Abu Dhabi R&T BV [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Fourteen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | ADNOC Global Trading Ltd |  |  |  |  |  |  |  |  |  |
Registered office | Abu Dhabi (United Arab Emirates) |  |  |  |  |  |  |  |  |  |
Country of operation | United Arab Emirates |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  |  |  |  |  |  | $ 1,000 |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Fourteen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Fourteen [Member] | Eni Abu Dhabi R&T BV [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Fifteen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | AET - Raffineriebeteiligungs gesellschaft mbH(†) |  |  |  |  |  |  |  |  |  |
Registered office | Schwedt (Germany) |  |  |  |  |  |  |  |  |  |
Country of operation | Germany |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 27,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Fifteen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 66.67% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Fifteen [Member] | Eni Deutsch GmbH [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 33.33% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Sixteen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Bayernoil Raffineriegesellschaft mbH(†) |  |  |  |  |  |  |  |  |  |
Registered office | Vohburg (Germany) |  |  |  |  |  |  |  |  |  |
Country of operation | Germany |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 10,226,000 |
% Equity ratio | 20.00% |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | J.O. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Sixteen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Sixteen [Member] | Eni Deutsch GmbH [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Seven teen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | City Carburoil SA(†) |  |  |  |  |  |  |  |  |  |
Registered office | Rivera (Switzerland) |  |  |  |  |  |  |  |  |  |
Country of operation | Switzerland |  |  |  |  |  |  |  |  |  |
Share capital | SFr |  |  |  | SFr 6,000,000 |  |  |  |  |  |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Seven teen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.09% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Seven teen [Member] | Eni Suisse SA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 49.91% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Eight teen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Egyptian International Gas Technology Co |  |  |  |  |  |  |  |  |  |
Registered office | Cairo (Egypt) |  |  |  |  |  |  |  |  |  |
Country of operation | Egypt |  |  |  |  |  |  |  |  |  |
Share capital | ج.م. |  |  |  |  |  | ج.م. 100,000,000 |  |  |  |  |
Consolidation or valuation method | Co. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Eight teen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 60.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Eight teen [Member] | Eni International BV |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 40.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Nine teen [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | ENEOS Italsing Pte Ltd |  |  |  |  |  |  |  |  |  |
Registered office | Singapore (Singapore) |  |  |  |  |  |  |  |  |  |
Country of operation | Singapore |  |  |  |  |  |  |  |  |  |
Share capital | $ |  |  |  |  | $ 12,000,000 |  |  |  |  |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Nine teen [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 77.50% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Nine teen [Member] | Eni International BV |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 22.50% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Fuelling Aviation Services GIE |  |  |  |  |  |  |  |  |  |
Registered office | Tremblay en France (France) |  |  |  |  |  |  |  |  |  |
Country of operation | France |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 1 |
Consolidation or valuation method | Co. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 75.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty [Member] | Eni France Sarl [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 25.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty one [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Mediterranée Bitumes SA |  |  |  |  |  |  |  |  |  |
Registered office | Tunisi (Tunisia) |  |  |  |  |  |  |  |  |  |
Country of operation | Tunisia |  |  |  |  |  |  |  |  |  |
Share capital | د.ت |  |  |  |  |  |  | د.ت 1,000,000 |  |  |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty one [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 66.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty one [Member] | Eni International BV |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 34.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty two [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Routex BV |  |  |  |  |  |  |  |  |  |
Registered office | Amsterdam (Netherlands) |  |  |  |  |  |  |  |  |  |
Country of operation | Netherlands |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 67,500 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty two [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty two [Member] | Eni International BV |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty three [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Saraco SA |  |  |  |  |  |  |  |  |  |
Registered office | Meyrin (Switzerland) |  |  |  |  |  |  |  |  |  |
Country of operation | Switzerland |  |  |  |  |  |  |  |  |  |
Share capital | SFr |  |  |  | SFr 420,000 |  |  |  |  |  |  |
Consolidation or valuation method | Co. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty three [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty three [Member] | Eni Suisse SA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty four [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Supermetanol CA(†) |  |  |  |  |  |  |  |  |  |
Registered office | Jose Puerto La Cruz (Venezuela) |  |  |  |  |  |  |  |  |  |
Country of operation | Venezuela |  |  |  |  |  |  |  |  |  |
Share capital | |  |  |  |  |  |  |  | 120.867 |  |  |
% Equity ratio | 50.00% |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | J.O. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty four [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 35.42% |  |  |  |  |  |  |  |  |  |
% Equity ratio | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty four [Member] | Ecofuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 34.51% |  |  |  |  |  |  |  |  |  |
% Equity ratio | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty four [Member] | Supermetanol CA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 30.07% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty five [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | TBG Tanklager Betriebsgesellschaft GmbH(†) |  |  |  |  |  |  |  |  |  |
Registered office | Salzburg (Austria) |  |  |  |  |  |  |  |  |  |
Country of operation | Austria |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 43,603.70 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty five [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty five [Member] | Eni Market A GmbH [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty six [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Weat Electronic Datenservice GmbH |  |  |  |  |  |  |  |  |  |
Registered office | Düsseldorf (Germany) |  |  |  |  |  |  |  |  |  |
Country of operation | Germany |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 409,034 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty six [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Refining & Marketing | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty six [Member] | Eni Deutsch GmbH [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty seven [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Brindisi Servizi Generali Scarl |  |  |  |  |  |  |  |  |  |
Registered office | Brindisi |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 1,549,060 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty seven [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 21.90% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty seven [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 49.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty seven [Member] | Eni Rewind SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.20% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty seven [Member] | EniPower SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 8.90% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty eight [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | IFM Ferrara ScpA |  |  |  |  |  |  |  |  |  |
Registered office | Ferrara |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 5,270,466 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty eight [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 57.98% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty eight [Member] | S.E.F. Srl [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 10.70% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty eight [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 19.74% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty eight [Member] | Eni Rewind SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 11.58% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty nine [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Matrìca SpA(†) |  |  |  |  |  |  |  |  |  |
Registered office | Porto Torres (SS) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 37,500,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty nine [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Twenty nine [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Novamont SpA |  |  |  |  |  |  |  |  |  |
Registered office | Novara |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 13,333,500 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 75.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 25.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty one [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Priolo Servizi ScpA |  |  |  |  |  |  |  |  |  |
Registered office | Melilli (SR) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 28,100,000 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty one [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 62.28% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty one [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 33.11% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty one [Member] | Eni Rewind SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 4.61% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty two [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Ravenna Servizi Industriali ScpA |  |  |  |  |  |  |  |  |  |
Registered office | Ravenna |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | 5,597,400 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty two [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 25.65% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty two [Member] | Ecofuel SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 1.85% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty two [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 42.13% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty two [Member] | EniPower SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 30.37% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty three [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Servizi Porto Marghera Scarl |  |  |  |  |  |  |  |  |  |
Registered office | Porto Marghera (VE) |  |  |  |  |  |  |  |  |  |
Country of operation | Italy |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  | € 8,695,718 |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty three [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 13.17% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty three [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 48.44% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty three [Member] | Eni Rewind SpA |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 38.39% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty four [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Lotte Versalis Elastomers Co Ltd(†) |  |  |  |  |  |  |  |  |  |
Registered office | Yeosu (South Korea) |  |  |  |  |  |  |  |  |  |
Country of operation | South Korea |  |  |  |  |  |  |  |  |  |
Share capital | ₩ | ₩ 401,800,000,000 |  |  |  |  |  |  |  |  |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty four [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty four [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 50.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty five [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | Versalis Zeal Ltd(†) |  |  |  |  |  |  |  |  |  |
Registered office | Takoradi (Ghana) |  |  |  |  |  |  |  |  |  |
Country of operation | Ghana |  |  |  |  |  |  |  |  |  |
Share capital | GH₵ |  | GH₵ 5,650,000 |  |  |  |  |  |  |  |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty five [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 20.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty five [Member] | Versalis Intern. SA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 80.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty six [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
Company name | VPM Oilfield Specialty Chemicals Llc (†) |  |  |  |  |  |  |  |  |  |
Registered office | Abu Dhabi (United Arab Emirates) |  |  |  |  |  |  |  |  |  |
Country of operation | United Arab Emirates |  |  |  |  |  |  |  |  |  |
Share capital | د.إ |  |  | د.إ 1,000,000 |  |  |  |  |  |  |  |
Consolidation or valuation method | Eq. |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty six [Member] | Third parties |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 51.00% |  |  |  |  |  |  |  |  |  |
Chemicals | Foreign (outside Italy) | Joint Arrangement Or Associate Thirty six [Member] | Versalis SpA [Member] |  |  |  |  |  |  |  |  |  |  |
Joint arrangements and associates |  |  |  |  |  |  |  |  |  |  |
% Ownership | 49.00% |  |  |  |  |  |  |  |  |  |

X
- Definition Disclosure of detailed information about joint arrangements and associates + References No definition available. + Details
Name: | e_DisclosureOfDetailedInformationAboutJointArrangementsAndAssociatesLineItems
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition These lines are represents that methods used to account for investments in joint arrangements and associates. + References No definition available. + Details
Name: | e_MethodUsedToAccountForInvestmentsInJointArrangementsAndAssociates
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition These lines are represents name of joint arrangement and associates. + References No definition available. + Details
Name: | e_NameOfJointArrangementsAndAssociates
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of equity ratio + References No definition available. + Details
Name: | e_PercentageOfEquityRatio
Namespace Prefix: | e_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition These lines are represents that principle place of the business of joint arrangement and associates. + References No definition available. + Details
Name: | e_PrincipalPlaceOfBusinessOfJointArrangementsAndAssociates
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interest in joint arrangements and associates. + References No definition available. + Details
Name: | e_ProportionOfOwnershipInterestInJointArrangementsAndAssociates
Namespace Prefix: | e_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The address at which the entity's office is registered. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 138 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_138_a&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_AddressOfRegisteredOfficeOfEntity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The nominal value of capital issued. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_e&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_IssuedCapital
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=srt_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=e_RefiningAndMarketingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_IT
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniFuelSpAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_ThirdPartiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EcofuelSpaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_CostieroGasLivSpAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateSevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateElevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwelveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_Raff.MilazzoScpaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=ifrs-full_ForeignCountriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniAbuDhabiRTBvMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateFourteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniDeutschGmbHMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateSevenTeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniSuisseSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateEightTeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniInternationalBVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateNineTeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniFranceSarlMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_SupermetanolCAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniMarketAGmbHMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentySixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=e_ChemicalsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_VersalisSpaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_SyndialSpAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_EniPowerSpaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_S.e.f.SrlMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=e_VersalisIntern.SaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_JointArrangementsAndAssociatesAxis=e_JointArrangementOrAssociateThirtySixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |