Financial Risk Management - Summary of Interest Rate Risk, Group Loans and Borrowings Balance (Detail) - EUR (€) € in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Disclosure of financial instruments by type of interest rate [line items] | ||
| Gains Losses on Change in Fair Value of Derivative | € 191,251 | € 164,666 |
| EUR | Floating interest rate [member] | ||
| Disclosure of financial instruments by type of interest rate [line items] | ||
| Gains Losses on Change in Fair Value of Derivative | 62,036 | 148,670 |
| EUR | Fixed interest rate [member] | ||
| Disclosure of financial instruments by type of interest rate [line items] | ||
| Gains Losses on Change in Fair Value of Derivative | € 129,215 | € 15,996 |