Net Property and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment, Net [Abstract]

Net Property and Equipment

Net Property and Equipment

Net property and equipment includes the following at December 31, 2018 and 2017.

	December 31,
In thousands	2018			2017
Proved crude oil and natural gas properties	$	24,060,625		$	21,362,199
Unproved crude oil and natural gas properties	291,564			365,413
Service properties, equipment and other	324,758			290,111
Total property and equipment	24,676,947			22,017,723
Accumulated depreciation, depletion and amortization	(10,807,147		)	(9,083,934		)
Net property and equipment	$	13,869,800		$	12,933,789