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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]    
Land $ 117,703 $ 121,330
Land improvements 112,374 115,693
Buildings and improvements 383,879 354,679
Machinery and equipment 3,619,712 3,564,389
Mineral rights and reserves 1,783,691 1,780,236
Construction in progress 2,057,387 1,491,314
Total $ 8,074,746 $ 7,427,641