Property, Plant and Equipment

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Property, plant and equipment consist of the following:



(In thousands)	Estimated Useful Lives	December 31 2013			December 31 2012
Land	—	$	16,652		$	26,336
Land improvements	5-20 years	13,615			14,199
Buildings and improvements	5-40 years	192,346			190,078
Machinery and equipment	3-20 years	1,969,493			2,950,384
Uncompleted construction	—	86,508			107,633
Gross property, plant and equipment		2,278,614			3,288,630
Less: Accumulated depreciation		(1,567,268		)	(2,022,405		)
Property, plant and equipment, net		$	711,346		$	1,266,225

Included in the amounts are $23.5 million and $5.2 million of property, plant and equipment under capital leases at December 31, 2013 and 2012, respectively.

Buildings and improvements include leasehold improvements that are amortized over the shorter of their useful lives or the initial term of the lease.

The decreases in Property, plant and equipment since December 31, 2012, primarily relates to the consummation of the Infrastructure transaction. See Note 3, Acquisitions and Dispositions, for additional information related to the Infrastructure transaction.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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