v3.26.1
Property, plant and equipment (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Property, plant and equipment    
Property, plant and equipment - beginning of the year € 59,864 € 56,299
Additions 8,702 7,999
Depreciation capitalized 267 288
Depreciation (5,969) (6,300)
Impairment (1,738) (3,136)
Reversals 205 303
Write-off (16) (422)
Currency translation differences (5,493) 2,774
Initial recognition and changes in estimates 279 97
Changes in the scope of consolidation (209)  
Changes in the scope of consolidation - included entities   2,586
Changes in the scope of consolidation - excluded entities   (1,351)
Other changes (5,356) 727
Property, plant and equipment - end of the year 50,536 59,864
Land and buildings    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 1,142 1,111
Additions 24 31
Depreciation (60) (57)
Impairment (10) (9)
Currency translation differences (2) 1
Initial recognition and changes in estimates (2)  
Changes in the scope of consolidation 10  
Changes in the scope of consolidation - included entities   12
Changes in the scope of consolidation - excluded entities   (1)
Transfers 40 47
Other changes (5) 7
Property, plant and equipment - end of the year 1,137 1,142
E&P wells, plant and machinery    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 38,229 37,421
Additions 70 20
Depreciation (5,295) (5,668)
Impairment (822) (1,705)
Reversals 30 107
Write-off   (1)
Currency translation differences (4,092) 2,071
Initial recognition and changes in estimates 75 35
Changes in the scope of consolidation - included entities   1,314
Changes in the scope of consolidation - excluded entities   (822)
Transfers 7,382 6,865
Other changes (2,023) (1,408)
Property, plant and equipment - end of the year 33,554 38,229
Other plant and machinery    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 4,491 4,588
Additions 532 255
Depreciation (614) (575)
Impairment (225) (371)
Reversals 109 92
Write-off (1) (1)
Currency translation differences (132) 49
Initial recognition and changes in estimates 11 6
Changes in the scope of consolidation 5  
Changes in the scope of consolidation - included entities   3
Changes in the scope of consolidation - excluded entities   (17)
Transfers 815 566
Other changes (317) (104)
Property, plant and equipment - end of the year 4,674 4,491
E&P exploration assets and appraisal    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 1,742 1,568
Additions 384 419
Depreciation capitalized 8 28
Write-off (13) (414)
Currency translation differences (178) 91
Initial recognition and changes in estimates (8) (4)
Changes in the scope of consolidation - included entities   97
Changes in the scope of consolidation - excluded entities   (25)
Transfers (128) (6)
Other changes (258) (12)
Property, plant and equipment - end of the year 1,549 1,742
E&P tangible assets in progress    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 11,296 9,682
Additions 6,080 5,546
Depreciation capitalized 259 260
Impairment (307) (669)
Reversals 24 74
Write-off   (5)
Currency translation differences (1,065) 554
Initial recognition and changes in estimates 174 62
Changes in the scope of consolidation - included entities   1,090
Changes in the scope of consolidation - excluded entities   (486)
Transfers (7,254) (6,859)
Other changes (3,261) 2,047
Property, plant and equipment - end of the year 5,946 11,296
Other tangible assets in progress and advances    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 2,964 1,929
Additions 1,612 1,728
Impairment (374) (382)
Reversals 42 30
Write-off (2) (1)
Currency translation differences (24) 8
Initial recognition and changes in estimates 29 (2)
Changes in the scope of consolidation (224)  
Changes in the scope of consolidation - included entities   70
Transfers (855) (613)
Other changes 508 197
Property, plant and equipment - end of the year 3,676 2,964
Gross carrying amount    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 198,576  
Property, plant and equipment - end of the year 169,192 198,576
Gross carrying amount | Land and buildings    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 4,412  
Property, plant and equipment - end of the year 4,444 4,412
Gross carrying amount | E&P wells, plant and machinery    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 139,117  
Property, plant and equipment - end of the year 115,147 139,117
Gross carrying amount | Other plant and machinery    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 33,226  
Property, plant and equipment - end of the year 33,421 33,226
Gross carrying amount | E&P exploration assets and appraisal    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 1,742  
Property, plant and equipment - end of the year 1,549 1,742
Gross carrying amount | E&P tangible assets in progress    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 14,589  
Property, plant and equipment - end of the year 8,355 14,589
Gross carrying amount | Other tangible assets in progress and advances    
Property, plant and equipment    
Property, plant and equipment - beginning of the year 5,490  
Property, plant and equipment - end of the year 6,276 5,490
Accumulated depreciation, amortisation and impairment    
Property, plant and equipment    
Property, plant and equipment - beginning of the year (138,712)  
Property, plant and equipment - end of the year (118,656) (138,712)
Accumulated depreciation, amortisation and impairment | Land and buildings    
Property, plant and equipment    
Property, plant and equipment - beginning of the year (3,270)  
Property, plant and equipment - end of the year (3,307) (3,270)
Accumulated depreciation, amortisation and impairment | E&P wells, plant and machinery    
Property, plant and equipment    
Property, plant and equipment - beginning of the year (100,888)  
Property, plant and equipment - end of the year (81,593) (100,888)
Accumulated depreciation, amortisation and impairment | Other plant and machinery    
Property, plant and equipment    
Property, plant and equipment - beginning of the year (28,735)  
Property, plant and equipment - end of the year (28,747) (28,735)
Accumulated depreciation, amortisation and impairment | E&P tangible assets in progress    
Property, plant and equipment    
Property, plant and equipment - beginning of the year (3,293)  
Property, plant and equipment - end of the year (2,409) (3,293)
Accumulated depreciation, amortisation and impairment | Other tangible assets in progress and advances    
Property, plant and equipment    
Property, plant and equipment - beginning of the year (2,526)  
Property, plant and equipment - end of the year € (2,600) € (2,526)