v3.26.1
Provisions (Details)
€ in Millions
 12 Months Ended
Dec. 31, 2025
EUR (€)
Provisions  
Carrying amount at beginning of period € 15,774
New or increased provisions 1,670
Initial recognition and changes in estimates 279
Accretion discount 250
Reversal of utilized provisions (1,956)
Reversal of unutilized provisions (515)
Currency translation differences (625)
Other changes (297)
Carrying amount at end of period 14,580
Provisions for site restoration, abandonment and social projects  
Provisions  
Carrying amount at beginning of period 9,712
New or increased provisions 135
Initial recognition and changes in estimates 279
Accretion discount 290
Reversal of utilized provisions (824)
Reversal of unutilized provisions (144)
Currency translation differences (554)
Other changes (272)
Carrying amount at end of period 8,622
Environmental provisions  
Provisions  
Carrying amount at beginning of period 3,700
New or increased provisions 641
Accretion discount (40)
Reversal of utilized provisions (671)
Reversal of unutilized provisions (42)
Currency translation differences (4)
Other changes (42)
Carrying amount at end of period 3,542
Provisions for litigations  
Provisions  
Carrying amount at beginning of period 594
New or increased provisions 353
Reversal of utilized provisions (175)
Reversal of unutilized provisions (85)
Currency translation differences (36)
Other changes 26
Carrying amount at end of period 677
Provisions for taxes other than income taxes  
Provisions  
Carrying amount at beginning of period 158
New or increased provisions 19
Reversal of utilized provisions (18)
Currency translation differences (8)
Other changes 22
Carrying amount at end of period 173
Loss adjustments and actuarial provisions for Eni's insurance companies  
Provisions  
Carrying amount at beginning of period 229
New or increased provisions 89
Reversal of utilized provisions (132)
Other changes 2
Carrying amount at end of period 188
Provisions for losses on investments  
Provisions  
Carrying amount at beginning of period 234
New or increased provisions 6
Reversal of unutilized provisions (5)
Currency translation differences (5)
Other changes 7
Carrying amount at end of period 237
Provisions for Everen (ex OIL) insurance cover  
Provisions  
Carrying amount at beginning of period 86
New or increased provisions 23
Reversal of utilized provisions (1)
Reversal of unutilized provisions (1)
Currency translation differences (1)
Other changes (7)
Carrying amount at end of period 99
Miscellaneous other provisions  
Provisions  
Carrying amount at beginning of period 1,061
New or increased provisions 404
Reversal of utilized provisions (135)
Reversal of unutilized provisions (238)
Currency translation differences (17)
Other changes (33)
Carrying amount at end of period € 1,042