v3.26.1
Property, Plant and Equipment - Movement in Property, Plant and Equipment (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period € 3,342  
Impairment of other property, plant and equipment, additions (1) € (1)
Property, plant and equipment at end of period 3,120 3,342
Land and Buildings    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 985  
Property, plant and equipment at end of period 952 985
Plant and machinery    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 1,562  
Property, plant and equipment at end of period 1,450 1,562
Fixed Assets under construction    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 802  
Property, plant and equipment at end of period 726 802
Gross carrying amount net of accumulated impairments    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 5,580 5,211
Additions 286 259
Disposals (51) (82)
Transfers (4) (3)
Translation differences (434) 195
Property, plant and equipment at end of period 5,377 5,580
Cost | Land and Buildings    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 1,231 1,132
Disposals (1) (5)
Transfers 72 57
Translation differences (93) 47
Property, plant and equipment at end of period 1,209 1,231
Cost | Plant and machinery    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 3,554 3,175
Additions 60 67
Disposals (50) (78)
Transfers 150 263
Translation differences (264) 127
Property, plant and equipment at end of period 3,450 3,554
Cost | Fixed Assets under construction    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period 802 911
Additions 227 193
Transfers (226) (323)
Translation differences (77) 21
Property, plant and equipment at end of period 726 802
Accumulated impairment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period (7) (7)
Impairment of other property, plant and equipment, additions (1) (1)
Disposals   1
Property, plant and equipment at end of period (8) (7)
Acc. Amortization    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period (2,238) (1,964)
Additions, depreciation (240) (222)
Disposals 39 33
Translation differences 182 (85)
Property, plant and equipment at end of period (2,257) (2,238)
Acc. Amortization | Land and Buildings    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period (246) (206)
Additions, depreciation (33) (31)
Disposals 1 1
Translation differences 21 (10)
Property, plant and equipment at end of period (257) (246)
Acc. Amortization | Plant and machinery    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment at beginning of period (1,992) (1,758)
Additions, depreciation (207) (191)
Disposals 38 32
Translation differences 161 (75)
Property, plant and equipment at end of period € (2,000) € (1,992)