Property, Plant & Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
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	2,383,265	2,084,338
Less accumulated depreciation	(1,020,070)	(841,432)
Property, plant, and equipment, net	1,363,195	1,242,906
Finance lease, right-of-use asset, accumulated amortization	9,000	7,000
Land and Land Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	19,368	20,454
Buildings and Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	415,530	419,157
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	1,651,762	1,483,183
Construction in Progress
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 271,605	$ 136,544