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Property Plant and Equipment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Jun. 30, 2020
Property, Plant and Equipment [Line Items]    
Finance lease right-of-use asset $ 25,000 $ 25,000
Property, plant, and equipment and finance lease right-of-use asset, before accumulated depreciation 2,026,067 1,853,361
Less accumulated depreciation (793,921) (638,589)
Property, plant, and equipment, net 1,232,146 1,214,772
Land and Improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 20,236 18,396
Buildings and Improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 413,377 345,736
Machinery and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 1,441,536 1,352,835
Construction in Progress    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 125,918 $ 111,394