Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2018

Revenue Recognition [Abstract]

Disaggregation of Revenue by Segment

					Intersegment
(in millions)	E&P		Midstream		Revenues		Total
Year ended December 31, 2018
Gas sales	$	1,974	$	–	$	24	$	1,998
Oil sales		193		–		3		196
NGL sales		353		–		(1)		352
Marketing		–		3,497		(2,275)		1,222
Gas gathering (1)		–		248		(159)		89
Other (2)		5		–		–		5
Total	$	2,525	$	3,745	$	(2,408)	$	3,862
Year ended December 31, 2017
Gas sales	$	1,775	$	–	$	18	$	1,793
Oil sales		101		–		1		102
NGL sales		206		–		–		206
Marketing		–		2,867		(1,895)		972
Gas gathering		–		331		(205)		126
Other (2)		4		–		–		4
Total	$	2,086	$	3,198	$	(2,081)	$	3,203
Year ended December 31, 2016
Gas sales	$	1,252	$	–	$	21	$	1,273
Oil sales		69		–		–		69
NGL sales		92		–		–		92
Marketing		–		2,191		(1,327)		864
Gas gathering		–		378		(240)		138
Total	$	1,413	$	2,569	$	(1,546)	$	2,436

(1) The Company’s gas gathering assets were divested in December 2018 as part of the Fayetteville Shale sale.

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

Disaggregation of Revenue on Geographic Basis

	For the year ended December 31,
(in millions)		2018		2017		2016
Northeast Appalachia	$	1,165	$	837	$	470
Southwest Appalachia		817		498		259
Fayetteville Shale		537		743		675
Other		6		8		9
Total	$	2,525	$	2,086	$	1,413

Reconciliation of Accounts Receivable

(in millions)	December 31, 2018		December 31, 2017
Receivables from contracts with customers	$	494	$	322
Other accounts receivable		87		106
Total accounts receivable	$	581	$	428