v3.25.4
Income from operations - Disaggregation of Sales per geographic area (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income from operations [Line Items]      
Total sales from contracts with customers € 17,461 € 17,667 € 17,779
Sales from other sources 373 354 390
Total sales 17,834 18,021 18,169
Western Europe      
Income from operations [Line Items]      
Total sales from contracts with customers 3,897 3,951 3,770
Sales from other sources 24 28 49
Total sales 3,921 3,978 3,819
North America      
Income from operations [Line Items]      
Total sales from contracts with customers 7,423 7,560 7,470
Sales from other sources 119 93 92
Total sales 7,542 7,655 7,562
Other mature geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 1,223 1,294 1,378
Sales from other sources 229 231 248
Total sales 1,452 1,526 1,626
Mature geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 12,543 12,805 12,618
Sales from other sources 372 353 389
Total sales 12,915 13,159 13,007
Growth geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 4,917 4,861 5,161
Sales from other sources 1 1 1
Total sales 4,919 4,863 5,162
Sales at a point in time      
Income from operations [Line Items]      
Total sales from contracts with customers 12,219 12,385 12,569
Sales at a point in time | Western Europe      
Income from operations [Line Items]      
Total sales from contracts with customers 2,606 2,698 2,552
Sales at a point in time | North America      
Income from operations [Line Items]      
Total sales from contracts with customers 4,945 4,958 4,859
Sales at a point in time | Other mature geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 798 893 980
Sales at a point in time | Mature geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 8,349 8,549 8,392
Sales at a point in time | Growth geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 3,870 3,836 4,177
Sales over time      
Income from operations [Line Items]      
Total sales from contracts with customers 5,241 5,282 5,210
Sales over time | Western Europe      
Income from operations [Line Items]      
Total sales from contracts with customers 1,291 1,254 1,221
Sales over time | North America      
Income from operations [Line Items]      
Total sales from contracts with customers 2,478 2,602 2,608
Sales over time | Other mature geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 425 401 398
Sales over time | Mature geographies      
Income from operations [Line Items]      
Total sales from contracts with customers 4,194 4,256 4,227
Sales over time | Growth geographies      
Income from operations [Line Items]      
Total sales from contracts with customers € 1,047 € 1,026 € 984