Finance income and costs (Details) - EUR (€) € in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Analysis of income and expense [abstract]
Interest income	€ 1.1	€ 1.2	€ 1.8	€ 2.7
Gain (loss) on hedge ineffectiveness	0.0	0.0	2.7	0.0
Net foreign exchange gains on translation of financial assets and financial liabilities	2.0	12.4	4.6	7.8
Finance income	3.1	13.6	9.1	10.5
Interest expense (a)	(28.7)	(27.6)	(56.2)	(55.6)
Derivatives, Transfer From Equity	(1.5)	0.0	0.0
Net pension interest costs	(1.1)	(1.2)	(2.2)	(2.4)
Amortization of debt discounts and borrowing costs	(0.3)	(1.7)	(0.6)	(3.5)
Finance costs	(31.6)	(30.5)	(59.0)	(61.5)
Net financing costs	€ (28.5)	€ (16.9)	(49.9)	€ (51.0)
Gains (Losses) on Restructuring of previous debt			€ (23.8)

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The gain (loss) on hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item.

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The amount of expense arising from interest.

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The amount of income arising from interest.

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