v3.26.1
Revenues and other income (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Products sales and service revenues      
Sales of crude oil € 27,401 € 28,151 € 25,685
Sales of oil products 21,660 23,741 25,508
Sales of natural gas and LNG 18,522 22,141 26,950
Sales of petrochemical products 2,954 3,920 4,385
Sales of power 6,529 6,318 7,252
Sales of other products 649 518 509
Services 4,436 4,008 3,428
Sales from operations 82,151 88,797 93,717
Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 81,394 88,219 92,905
Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations 757 578 812
Exploration & Production      
Products sales and service revenues      
Sales of crude oil 27,394 28,151 25,685
Sales of oil products 4,316 4,058 5,219
Sales of natural gas and LNG 4,899 6,039 5,881
Sales of petrochemical products   253 766
Sales of other products 49 40 44
Services 451 334 366
Sales from operations 37,109 38,875 37,961
Exploration & Production | Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 36,694 38,557 37,626
Exploration & Production | Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations 415 318 335
Global Gas & LNG Portfolio and Power      
Products sales and service revenues      
Sales of natural gas and LNG 9,982 12,480 16,638
Sales of power 2,534 2,244 2,420
Sales of other products 2 16 38
Services 584 321 372
Sales from operations 13,102 15,061 19,468
Global Gas & LNG Portfolio and Power | Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 12,945 14,963 19,383
Global Gas & LNG Portfolio and Power | Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations 157 98 85
Refining and Chemicals      
Products sales and service revenues      
Sales of crude oil 7    
Sales of oil products 1,526 1,518 1,847
Sales of natural gas and LNG 1 2  
Sales of petrochemical products 2,954 3,667 3,619
Sales of power 1 1  
Sales of other products 370 326 305
Services 364 367 417
Sales from operations 5,223 5,881 6,188
Refining and Chemicals | Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 5,169 5,844 6,147
Refining and Chemicals | Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations 54 37 41
Enilive      
Products sales and service revenues      
Sales of oil products 15,818 18,165 18,442
Sales of other products 88 62 28
Services 431 443 407
Sales from operations 16,337 18,670 18,877
Enilive | Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 16,337 18,670 18,645
Enilive | Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations     232
Plenitude      
Products sales and service revenues      
Sales of natural gas and LNG 3,640 3,620 4,431
Sales of power 3,994 4,073 4,832
Sales of other products 77 67 91
Services 2,407 2,364 1,686
Sales from operations 10,118 10,124 11,040
Plenitude | Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 10,111 10,124 11,040
Plenitude | Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations 7    
Corporate and Other activities      
Products sales and service revenues      
Sales of other products 63 7 3
Services 199 179 180
Sales from operations 262 186 183
Corporate and Other activities | Goods/Services transferred in a specific moment at point in time      
Products sales and service revenues      
Sales from operations 138 61 64
Corporate and Other activities | Goods/Services transferred over a period of time      
Products sales and service revenues      
Sales from operations € 124 € 125 € 119