Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Summary of property, plant and equipment and depreciation expense

Property, plant and equipment consist of the following:

	June 30, 2018			December 31, 2017
	(In thousands)
Land	$	225,493		$	224,894
Land use rights	26,845			26,845
Buildings and improvements	1,496,683			1,384,846
Machinery and equipment	5,131,573			4,938,291
Software and computer equipment	206,219			200,500
Furniture, fixtures and other equipment	16,664			15,722
Construction in progress	57,334			104,910
Total property, plant and equipment	7,160,811			6,896,008
Accumulated depreciation and amortization	(4,405,851		)	(4,200,943		)
Total property, plant and equipment, net	$	2,754,960		$	2,695,065

The following table summarizes our depreciation expense:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands)
Depreciation expense	$	142,497	$	144,839	$	284,502	$	286,295