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Derivative financial instruments - Schedule of Notional Amount of Foreign Exchange (Details) - Foreign currency derivatives - Financial Instruments Held For Hedging - Foreign currency exchange risk - EUR (€) € in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | € 835,812 | € 756,316
Cash flow hedges |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 835,812 | 756,316
Cash flow hedges | USD |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 314,100 | 278,068
Cash flow hedges | CHF |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 402 | 0
Cash flow hedges | CNY |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 263,735 | 255,447
Cash flow hedges | GBP |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 48,048 | 53,991
Cash flow hedges | JPY |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 55,057 | 42,435
Cash flow hedges | HKD |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | 29,877 | 34,825
Cash flow hedges | Other |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Notional amount | € 124,593 | € 91,550

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