Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2018

Revenue Recognition [Abstract]

Disaggregation of Revenue by Segment

						Intersegment
(in millions)		E&P		Midstream		Revenues		Total
Three months ended September 30, 2018
Gas sales	$	460	$	–	$	5	$	465
Oil sales		61		–		1		62
NGL sales		112		–		–		112
Marketing		–		846		(559)		287
Gas gathering		–		66		(41)		25
Total	$	633	$	912	$	(594)	$	951
Three months ended September 30, 2017
Gas sales	$	388	$	–	$	6	$	394
Oil sales		27		–		–		27
NGL sales		55		–		–		55
Marketing		–		656		(423)		233
Gas gathering		–		78		(50)		28
Total	$	470	$	734	$	(467)	$	737

					Intersegment
(in millions)	E&P		Midstream		Revenues		Total
Nine months ended September 30, 2018
Gas sales	$	1,395	$	–	$	17	$	1,412
Oil sales		139		–		2		141
NGL sales		252		–		–		252
Marketing		–		2,403		(1,598)		805
Gas gathering		–		202		(129)		73
Other (1)		4		–		−		4
Total	$	1,790	$	2,605	$	(1,708)	$	2,687
Nine months ended September 30, 2017
Gas sales	$	1,354	$	–	$	14	$	1,368
Oil sales		73		–		–		73
NGL sales		132		–		–		132
Marketing		–		2,173		(1,437)		736
Gas gathering		–		241		(156)		85
Total	$	1,559	$	2,414	$	(1,579)	$	2,394

(1) Other E&P revenues consists primarily of water sales to third-party operators.

Disaggregation of Revenue on Geographic Basis

	For the three months ended September 30,				For the nine months ended September 30,
(in millions)		2018		2017		2018		2017
Northeast Appalachia	$	254	$	163	$	794	$	632
Southwest Appalachia		235		131		557		345
Fayetteville Shale		140		175		431		578
Other		4		1		8		4
Total	$	633	$	470	$	1,790	$	1,559

Reconciliation of Accounts Receivable

(in millions)	September 30, 2018		December 31, 2017
Receivables from contracts with customers	$	330	$	322
Other accounts receivable		67		106
Total accounts receivable	$	397	$	428