Investments accounted for using the equity method - Summary of Key Items Which Have Not Been Audited (Details) - Associates and joint ventures - EUR (€) € in Millions |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Disclosure of transactions between related parties [line items] | |||
| Net sales and other revenues | € 2,657 | € 887 | |
| Net Income | (61) | 24 | |
| Other comprehensive income | 83 | (1) | |
| Comprehensive income | 22 | € 23 | |
| Non-current assets | 16,673 | € 15,013 | |
| Current assets | 2,925 | 2,859 | |
| Total assets | 19,598 | 17,872 | |
| Equity attributable to equity holders of OPAL JV Co | 5,958 | 5,380 | |
| Equity attributable to non-controlling interests | 436 | 490 | |
| Total equity | 6,394 | 5,870 | |
| Non-current liabilities | 11,575 | 9,850 | |
| Current liabilities | 1,629 | 2,152 | |
| Total liabilities | 13,204 | 12,002 | |
| Total equity and liabilities | € 19,598 | € 17,872 | |