Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Schedule of Property Plant and Equipment, Estimated Useful Life

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

Schedule of Intangible and Other Assets, Estimated Useful Life

Goodwill and Intangible Assets — Identifiable intangible assets, other than indefinite-lived trademarks, are typically amortized over the following range of estimated useful lives:



Asset		Useful Life
Customer relationships		5 to 15 years
Certain finite-lived trademarks		5 to 15 years
Customer supply contracts		Over the shorter of the estimated useful lives or the terms of the agreements
Noncompetition agreements		Over the shorter of the estimated useful lives or the terms of the agreements
Deferred financing costs		Over the terms of the related debt