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Inventories (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Inventory Disclosure [Abstract]    
Raw materials $ 113.8 $ 177.2
Work in process 865.8 844.8
Finished goods 1,229.5 2,158.3
Other Inventory, Inventory at off Site Premises, Gross [1] 49.4 184.2
Operating materials and supplies 194.7 178.6
Total Inventory $ 2,453.2 $ 3,543.1
[1] Final price deferred is product that has shipped to customers, but the price has not yet been agreed upon.