Other Income / (Charges) - Additional Information (Detail) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of other charges [line items] | |||
| Proceeds From Sale Of Shares | € 12.5 | ||
| Gain on disposal of portfolio insurance contract and reinsurance contract | € 57.0 | ||
| Gain on transfer of legal ownership. | € 46.0 | ||
| Gain on divestment of subsidiaries or associates | € 78.0 | ||