Property, Plant And Equipment

9 Months Ended

Sep. 30, 2013

Property, Plant and Equipment [Abstract]

Property, Plant And Equipment

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following:

	September 30, 2013			December 31, 2012
	(In thousands)
Oil and gas properties
Subject to depletion	$	5,630,152		$	5,770,913
Unevaluated costs	291,147			307,267
Accumulated depletion	(5,291,615		)	(5,297,220		)
Net oil and gas properties	629,684			780,960
Other plant and equipment
Pipelines and processing facilities	358,186			375,248
General properties	79,619			75,147
Accumulated depreciation	(204,557		)	(202,297		)
Net other property and equipment	233,248			248,098
Property, plant and equipment, net of accumulated depletion and depreciation	$	862,932		$	1,029,058

Ceiling Test Analysis and Impairment

We recorded impairment expense of $479.9 million and $66.3 million for the three months ended September 30, 2012, $1,042.7 million and $157.0 million for the three months ended June 30, 2012 and $178.0 million and $139.9 million for the three months ended March 31, 2012 for our U.S. and Canadian oil and gas properties, respectively. We also recorded impairment expense of $4.9 million for the three months ended September 30, 2012 for other property and equipment.

Notes 2 and 8 to the consolidated financial statements in our 2012 Annual Report on Form 10-K contain additional information regarding our property, plant and equipment and our quarterly ceiling test analysis.