Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

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, 2014 and 2013 consisted of the following:

	December 31
	2014			2013
	(In thousands)
Land	$	174,654		$	181,026
Buildings	646,098			609,907
Leasehold improvements	76,389			75,925
Machinery and equipment	1,809,037			1,704,160
Construction in progress	34,587			56,069
	2,740,765			2,627,087
Less accumulated depreciation	(1,568,169		)	(1,411,040		)
Total	$	1,172,596		$	1,216,047