Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Depreciation is calculated using the straight-line method typically over the following range of estimated useful lives of the assets:

Asset	Useful Life
Buildings	15 to 40 years
Machinery and equipment	3 to 20 years
Leasehold improvements	Over the shorter of their estimated useful lives or the terms of the applicable lease agreements

Property, plant and equipment as of December 31, 2019 and 2018 consisted of the following:

	December 31
	2019			2018
	(In thousands)
Land	$	157,100		$	162,326
Buildings	648,595			642,986
Leasehold improvements	71,577			84,320
Machinery and equipment	1,781,324			1,873,505
Construction in progress	31,711			45,349
	2,690,307			2,808,486
Less accumulated depreciation	(1,869,941		)	(1,802,304		)
Total	$	820,366		$	1,006,182