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Summary of Material Accounting Policies - Additional Information (Detail) € in Millions |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 29, 2022 | Jun. 30, 2024 $ / shares | Jun. 30, 2024 EUR (€) | Dec. 31, 2023 EUR (€)
Disclosure of summary of significant accounting policies [line items] |  |  |  |
Convertible Senior Notes |  |  | € 432.2 | € 407.1
Derivative liabilities |  |  |  | 143.3
Non-current lease liabilities |  |  |  | 84.6
Current lease liabilities |  |  |  | € 14.2
Convertible Senior Notes [Member] |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |
Borrowings, maturity | April 1, 2028 | April 1, 2028 |  |
American depository shares [member] |  |  |  |
Disclosure of summary of significant accounting policies [line items] |  |  |  |
Conversion Price Per Share | $ / shares |  | $ 166.34 |  |

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