v3.25.4
Receivables - Allowance for accounts receivable (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Financial assets at period start € (6,992)  
Financial assets at period end (7,338) € (6,992)
Impairments | Receivables - current    
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]    
Financial assets at period start 245 216
Additions charged to expense 37 112
Deductions from allowance (45) (88)
Transfer to assets held for sale (1) 0
Other movements (43) 5
Financial assets at period end € 193 € 245