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Property and Equipment (Schedule of Property and Equipment) (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST $ 2,507.7 $ 2,309.4
Equipment    
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST 1,856.7 1,660.9
Work-in-progress    
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST 602.2 607.6
Other    
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST $ 48.8 $ 40.9