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Property, plant and equipment, net - Schedule of Property, Plant, and Equipment (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Abstract]    
Property, plant and equipment, gross $ 802.0 $ 794.2
Less: Accumulated depreciation and amortization (422.6) (411.4)
Total property, plant and equipment, net 379.4 382.8
Land and improvements    
Property, Plant and Equipment [Abstract]    
Property, plant and equipment, gross 30.0 30.0
Buildings, building improvements and leasehold improvements    
Property, Plant and Equipment [Abstract]    
Property, plant and equipment, gross 229.9 229.9
Furniture and equipment    
Property, Plant and Equipment [Abstract]    
Property, plant and equipment, gross 435.6 433.6
Software    
Property, Plant and Equipment [Abstract]    
Property, plant and equipment, gross 67.9 64.0
Construction-in-progress    
Property, Plant and Equipment [Abstract]    
Property, plant and equipment, gross $ 38.6 $ 36.7