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Income and Expenses - Other Operating Result (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Income And Expenses [Line Items]      
Other operating income € 140.6 € 105.0 € 815.3
Other operating expenses [1] (811.5) (293.0) (410.0)
Total other operating result (670.9) (188.0) 405.3
Gain on derivative instruments at fair value through profit or loss      
Disclosure Of Income And Expenses [Line Items]      
Other operating income 0.0 67.6 0.0
Grants      
Disclosure Of Income And Expenses [Line Items]      
Other operating income 31.5 2.2 1.4
Foreign exchange differences, net      
Disclosure Of Income And Expenses [Line Items]      
Other operating income 84.9 0.0 727.4
Other operating expenses 0.0 (252.0) 0.0
Other      
Disclosure Of Income And Expenses [Line Items]      
Other operating income 24.2 35.2 86.5
Other operating expenses (8.0) (11.6) (21.5)
Contractual disputes / settlements      
Disclosure Of Income And Expenses [Line Items]      
Other operating expenses (657.4) 0.0 0.0
Litigation costs      
Disclosure Of Income And Expenses [Line Items]      
Other operating expenses (113.7) (29.4) (3.0)
Loss on derivative instruments at fair value through profit or loss      
Disclosure Of Income And Expenses [Line Items]      
Other operating expenses € (32.4) € 0.0 € (385.5)
[1] Adjustments to the year 2022 figures due to change in functional allocation of general and administrative expenses and
other operating expenses (see Note 7.2).