Equity - Schedule of changes in retained earnings (Details) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of equity [Line Items] | |||
| Retained earnings, opening balance | € 36,243 | € 40,299 | |
| Dividends and other distributions | (3,191) | (3,626) | € (2,668) |
| Employee share-based compensation plans | 52 | 45 | 34 |
| Retained earings, closing balance | 40,016 | 36,243 | 40,299 |
| Retained earnings | |||
| Disclosure of equity [Line Items] | |||
| Retained earnings, opening balance | 36,243 | 40,299 | 41,538 |
| Transfer to/from other reserves | 616 | 585 | 899 |
| Result for the year | 8,310 | 5,209 | 3,804 |
| Dividends and other distributions | (3,691) | (4,124) | (2,668) |
| Employee share-based compensation plans | (8) | 1 | (7) |
| Share buybacks and other changes | (1,453) | (5,728) | (3,222) |
| Retained earings, closing balance | 40,016 | 36,243 | 40,299 |
| Retained earnings | Impact IAS 29 on opening balance | |||
| Disclosure of equity [Line Items] | |||
| Retained earnings, opening balance | (45) | ||
| Retained earings, closing balance | |||