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Property, Plant and Equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, at cost $ 23,499.5 $ 21,623.6  
Less: accumulated depreciation and depletion 9,914.1 8,944.9  
Property, plant and equipment, net 13,585.4 12,678.7  
Capitalized interest on major construction projects 35.2 26.8 $ 30.1
Depreciation 958.9 932.1 $ 811.8
Land      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, at cost 373.0 345.6  
Mining properties and rights      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, at cost 6,477.5 6,018.2  
Buildings and leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, at cost 3,881.6 3,522.6  
Machinery and equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, at cost 11,407.6 10,606.8  
Construction in-progress      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, at cost $ 1,359.8 $ 1,130.4