v3.25.4
Property, plant and equipment - Summary of Movements in Leased Assets (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period € 1,410  
Leased assets at end of period 1,166 € 1,410
Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period 1,410  
Leased assets at end of period 1,166 1,410
Land and buildings | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period 1,114  
Leased assets at end of period 942 1,114
Plant and equipment | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period 296  
Leased assets at end of period 224 296
Cost | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period 3,293 3,208
Additions through business combinations 18  
Additions 463 547
Disposals and other movements (395) (522)
Hyperinflationary adjustment 8 (4)
Distributed through demerger (357)  
Reclassification as held for sale 46 3
Currency retranslation (253) 67
Leased assets at end of period 2,731 3,293
Cost | Land and buildings | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period 2,706 2,625
Additions through business combinations 18  
Additions 333 404
Disposals and other movements (316) (373)
Hyperinflationary adjustment 8 (4)
Distributed through demerger (310)  
Reclassification as held for sale 11 2
Currency retranslation (194) 56
Leased assets at end of period 2,234 2,706
Cost | Plant and equipment | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period 587 583
Additions through business combinations 0  
Additions 130 143
Disposals and other movements (79) (149)
Hyperinflationary adjustment 0 0
Distributed through demerger (47)  
Reclassification as held for sale 35 1
Currency retranslation (59) 11
Leased assets at end of period 497 587
Accumulated depreciation | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period (1,883) (1,878)
Depreciation/Impairment charge for the year (367) (377)
Disposals and other movements 304 412
Distributed through demerger 240  
Reclassification as held for sale (7) (1)
Currency retranslation 134 (41)
Leased assets at end of period (1,565) (1,883)
Accumulated depreciation | Land and buildings | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period (1,592) (1,578)
Depreciation/Impairment charge for the year (258) (271)
Disposals and other movements 238 292
Distributed through demerger 211  
Reclassification as held for sale (1) 0
Currency retranslation 108 (35)
Leased assets at end of period (1,292) (1,592)
Accumulated depreciation | Plant and equipment | Leased assets    
Disclosure of Detailed Information about Property, Plant and Equipment [Line Items]    
Leased assets at beginning of period (291) (300)
Depreciation/Impairment charge for the year (109) (106)
Disposals and other movements 66 120
Distributed through demerger 29  
Reclassification as held for sale (6) (1)
Currency retranslation 26 (6)
Leased assets at end of period € (273) € (291)