Property, Plant & Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
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	3,299,341	3,041,969
Less accumulated depreciation	(1,482,082)	(1,259,934)
Property, plant, and equipment, net	1,817,259	1,782,035
Accumulated depreciation of finance lease ROU assets	12,000	11,000
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	66,156	69,639
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	774,991	780,204
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,034,310	1,879,136
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 398,884	$ 287,990