Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Capitalized interest included in property, plant and equipment	$ 6,362	$ 7,214	$ 10,684
Depreciation expense	574,095	544,733	$ 487,411
Finance leases	58,170	35,271
Finance leases, accumulated depreciation	$ 12,498	$ 5,664