v3.25.4

Revenue - Additional Information (Detail) € in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2024 EUR (€) | Jan. 31, 2024 EUR (€) | Nov. 30, 2023 USD ($) | Dec. 31, 2025 EUR (€) CommercialCustomer | Dec. 31, 2024 EUR (€) CommercialCustomer | Dec. 31, 2023 EUR (€) CommercialCustomer
Disclosure of performance obligations [line items] |  |  |  |  |  |
Revenue |  |  |  | € 720,132 | € 363,641 | € 266,718
Number of commercial customers | CommercialCustomer |  |  |  | 2 | 4 | 4
Novo Nordisk [member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Upfront development and regulatory milestones potentially to be received | € 285,000 |  |  |  |  |
Upfront fee for exclusive license | 100,000 |  |  |  |  |
Maximum additional development and regulatory milestones potentially to be received | € 77,500 |  |  |  |  |
Third Party Investors [Member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Commitment from investors |  | € 150,000 |  |  |  |
Teijin [Member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Upfront payment received | $ |  |  | $ 70,000,000 |  |  |
Maximum additional development and regulatory milestones potentially to be received | $ |  |  | $ 175,000,000 |  |  |
Licenses [Member] | Novo Nordisk [member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Upfront payment received |  |  |  |  | € 95,300 |
Licenses [Member] | Third Party Investors [Member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Upfront payment received |  |  |  |  | € 27,100 |
Licenses [Member] | Teijin [Member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Upfront payment received |  |  |  |  |  | € 63,700
Commercial customers [member] | Bottom of range [member] |  |  |  |  |  |
Disclosure of performance obligations [line items] |  |  |  |  |  |
Percentage of revenue from commercial products |  |  |  | 10.00% | 10.00% |

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