CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Operating Revenues:
Total operating revenues	$ 636	$ 951		$ 2,293	$ 2,687
Operating Costs and Expenses:
Operating expenses	189	206		523	588
General and administrative expenses	42	51		119	165
Loss on sale of operating assets	0	0		3	0
Restructuring charges	4	2		9	20
Depreciation, depletion and amortization	125	151		352	426
Impairments	2	161		8	171
Taxes, other than income taxes	15	26		51	64
Total operating costs and expense	665	885		2,087	2,242
Operating Income (Loss)	(29)	66		206	445
Interest Expense:
Interest on debt	42	56		125	180
Other interest charges	2	2		5	6
Interest capitalized	(27)	(29)		(84)	(86)
Total Interest Expense	17	29		46	100
Gain (Loss) on Derivatives	100	(65)		220	(108)
Gain (Loss) on Early Extinguishment of Debt	7	0		7	(8)
Other Income (Loss), Net	(2)	(1)		(7)	1
Income (Loss) Before Income Taxes	59	(29)		380	230
Provision (Benefit) for Income Taxes
Current	(1)	0		(1)	0
Deferred	11	0		(400)	0
Total Provision (Benefit) from Income Taxes	10	0		(401)	0
Net Income (Loss)	49	(29)	[1]	781	230	[1]
Participating securities – mandatory convertible preferred stock	0	0		0	1
Net Income (Loss) Attributable to Common Stock	$ 49	$ (29)		$ 781	$ 229
Earnings (Loss) Per Common Share
Basic (in dollars per share)	$ 0.09	$ (0.05)		$ 1.45	$ 0.40
Diluted (in dollars per share)	$ 0.09	$ (0.05)		$ 1.44	$ 0.39
Weighted Average Common Shares Outstanding:
Basic (in shares)	539,221,101	581,171,753		539,315,170	577,912,421
Diluted (in shares)	540,038,187	581,171,753		540,442,649	579,828,858
Gas sales
Operating Revenues:
Total operating revenues	$ 238	$ 465		$ 943	$ 1,412
Oil sales
Operating Revenues:
Total operating revenues	67	62		153	141
NGL sales
Operating Revenues:
Total operating revenues	52	112		191	252
Marketing
Operating Revenues:
Total operating revenues	279	287		1,004	805
Gas gathering
Operating Revenues:
Total operating revenues	0	25		0	73
Other
Operating Revenues:
Total operating revenues	0	0		2	4
Marketing purchases
Operating Costs and Expenses:
Marketing purchases	$ 288	$ 288		$ 1,022	$ 808

[1] In 2018, deferred tax activity incurred in other comprehensive income was offset by a valuation allowance.