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Financial Assets and Financial Liabilities - Summary of Carrying Amount of Monetary Assets (Details) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Cash And Cash Equivalents [Line Items] |  |
Total | € 747.2 | € 7,058.1
Currency risk | Monetary liabilities and provisions in U.S. dollar |  |
Cash And Cash Equivalents [Line Items] |  |
Total | 567.3 | 1,527.8
Currency risk | Monetary assets in U.S. dollar |  |
Cash And Cash Equivalents [Line Items] |  |
Total | 1,191.9 | 7,098.5
Currency risk | Cash and cash equivalents in U.S. dollar |  |
Cash And Cash Equivalents [Line Items] |  |
Total | € 122.6 | € 1,487.4

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