Financial Assets and Financial Liabilities - Summary of Equity Securities Measured at Fair Value Through Other Comprehensive Income (Details) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of financial assets [line items] | |||
| Net gain / (loss) on equity instruments designated at fair value through other comprehensive income | € (15.9) | € (146.6) | € 3.7 |
| Net gain / (loss) on equity instruments designated at fair value through other comprehensive income | |||
| Disclosure of financial assets [line items] | |||
| Net gain / (loss) on equity instruments designated at fair value through other comprehensive income | € (15.9) | € (146.6) | € 3.7 |