Note 25 Equity impact (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Equity impact [Line Items] | |||
| Total impact on equity debit credit | € 375 | € 132 | € 314 |
| Defined benefit plans equity impact [Member] | |||
| Equity impact [Line Items] | |||
| Total impact on equity debit credit | 210 | 218 | 302 |
| Post employment medical benefits equity impact [Member] | |||
| Equity impact [Line Items] | |||
| Total impact on equity debit credit | € 165 | € (86) | € 12 |