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Financial instruments and fair value measurements - additional information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges	$ 0.0	$ 160.8	$ 0.0	$ 160.8
Property, plant and equipment, estimated fair value		25.9		25.9
Customer relationships
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finite-lived intangibles, estimated fair value		31.4		31.4
Developed technology
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finite-lived intangibles, estimated fair value		$ 19.3		$ 19.3