Goodwill - Goodwill (Detail) - Goodwill - EUR (€) € in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of reconciliation of changes in goodwill [line items] | ||
| Intangible assets and goodwill at beginning of period | € 10,383 | € 9,876 |
| Divestments and transfers to assets classified as held for sale | (53) | (22) |
| Translation differences and other | (1,058) | 528 |
| Total change | (1,112) | 507 |
| Intangible assets and goodwill at end of period | 9,271 | 10,383 |
| Cost | ||
| Disclosure of reconciliation of changes in goodwill [line items] | ||
| Intangible assets and goodwill at beginning of period | 12,777 | 12,133 |
| Intangible assets and goodwill at end of period | 11,367 | 12,777 |
| Impairments | ||
| Disclosure of reconciliation of changes in goodwill [line items] | ||
| Intangible assets and goodwill at beginning of period | (2,394) | (2,256) |
| Intangible assets and goodwill at end of period | € (2,096) | € (2,394) |