Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 and 2015 consisted of the following:



	December 31
	2016			2015
	(In thousands)
Land	$	174,323		$	174,620
Buildings	673,687			666,697
Leasehold improvements	82,284			76,985
Machinery and equipment	1,921,436			1,850,012
Construction in progress	24,362			32,116
	2,876,092			2,800,430
Less accumulated depreciation	(1,712,241		)	(1,626,293		)
Total	$	1,163,851		$	1,174,137

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
Finite-lived trademarks		5 to 10 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(1)		Over the terms of the related debt

(1)

Deferred financing costs associated with our receivables securitization facility and senior secured credit facility are recorded as assets in the identifiable intangible and other assets, net line of our Consolidated Balance Sheets. Beginning on January 1, 2016, we adopted ASU No. 2015-03, Imputation of Interest - Simplifying the Presentation of Debt Issuance Costs, discussed below. Upon our adoption of ASU No. 2015-03, deferred financing costs associated with the senior notes due 2023 were reclassified from other assets to a reduction to the carrying amount of the liability on our Consolidated Balance Sheets and retroactively applied to prior periods. All of our deferred financing costs are amortized to interest expense over the terms of the related debt.