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Intangible assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 855.4 $ 855.4
Accumulated Amortization 386.4 353.9
Net Carrying Amount $ 469.0 501.5
Products    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Useful Life in Years 13 years 6 months  
Gross Carrying Amount $ 855.4 855.4
Accumulated Amortization 386.4 353.9
Net Carrying Amount $ 469.0 $ 501.5