Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Schedule of Property, Plant and Equipment

	(in thousands)
December 31,	2020			2019
Land and improvements, net	$	744,305		$	719,736
Buildings and improvements		1,505,913			1,413,690
Machinery and equipment		12,204,738			11,630,179
Proved oil and gas properties		558,231			558,123
Leasehold interest in unproved oil and gas properties		138,000			165,000
Construction in process and equipment deposits		1,603,416			1,108,054
		16,754,603			15,594,782
Less accumulated depreciation		(9,855,493	)		(9,416,227	)
	$	6,899,110		$	6,178,555