Investments accounted for using the equity method - Additional Information (Details) - EUR (€) € in Millions |
2 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disclosure of transactions between related parties [line items] | |||
| Share of profit/(loss) from investments accounted for using the equity method | € 2 | € 85 | |
| OPAL JV Co | |||
| Disclosure of transactions between related parties [line items] | |||
| Share of profit/(loss) from investments accounted for using the equity method | € 11 | € (39) | |