Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

(in thousands) December 31,
	2014			2013
Land and improvements	$	576,511		$	555,309
Buildings and improvements		1,018,342			941,379
Machinery and equipment		10,080,640			9,159,151
Proved oil and gas properties		584,466			487,033
Construction in process and equipment deposits		193,594			400,373
		12,453,553			11,543,245
Less accumulated depreciation		(7,165,914	)		(6,626,221	)
	$	5,287,639		$	4,917,024