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Property and Equipment (Schedule of Property and Equipment) (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST $ 2,014.0 $ 1,889.0
Equipment    
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST 1,378.0 1,312.5
Work-in-progress    
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST 596.4 537.0
Other    
Property, Plant and Equipment [Line Items]    
PROPERTY AND EQUIPMENT, AT COST $ 39.6 $ 39.5