Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Segment Information [Abstract]

Summary Financial Information For Company's Reportable Segments

	Exploration
	and		Midstream
	Production		Services		Other			Total
	(in thousands)
Three months ended March 31, 2014:
Revenues from external customers	$	795,413	$	317,326	$	38		$	1,112,777
Intersegment revenues		6,405		912,081		41			918,527
Operating income (loss)		352,140		82,639		(160)			434,619
Other income (loss), net		1,512		47		(366)			1,193
Loss on derivatives		(99,242)		(362)		(116)			(99,720)
Depreciation, depletion and amortization expense		211,080		13,953		43			225,076
Interest expense(1)		9,116		3,597		194			12,907
Provision (benefit) for income taxes(1)		97,767		31,507		(279)			128,995
Assets		6,621,342		1,543,944		257,878	(2)		8,423,164
Capital investments(3)		498,907		38,553		4,476			541,936
Three months ended March 31, 2013:
Revenues from external customers	$	510,094	$	223,534	$	21		$	733,649
Intersegment revenues		1,508		497,373		54			498,935
Operating income (loss)(1)		175,758		76,307		(105)			251,960
Other income (loss), net		(378)		(155)		–			(533)
Loss on derivatives		(29,794)		–		–			(29,794)
Depreciation, depletion and amortization expense		167,450		11,912		105			179,467
Interest expense(1)		6,176		2,645		200			9,021
Provision (benefit) for income taxes(1)		55,816		29,403		(122)			85,097
Assets		5,389,728		1,278,256		248,807	(2)		6,916,791
Capital investments(3)		475,333		38,467		4,256			518,056

⁽¹⁾ Interest expense and the provision for income taxes by segment are allocated as they are incurred at the corporate level.

⁽²⁾ Other assets represent corporate assets not allocated to segments and assets, including restricted cash and investments in cash equivalents, for non reportable segments.

⁽³⁾ Capital investments includes increases of $5.6 million and $32.9 million for the three-month periods ended March 31, 2014 and 2013, respectively, relating to the change in accrued expenditures between periods.