CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Revenues:
Total operating revenues	$ 592	$ 990
Operating Costs and Expenses:
Operating expenses	193	165
General and administrative expenses	26	37
Restructuring charges	10	3
Depreciation, depletion and amortization	113	112
Impairments	1,479	0
Taxes, other than income taxes	13	19
Total operating costs and expense	2,082	777
Operating Income (Loss)	(1,490)	213
Interest Expense:
Interest on debt	40	42
Other interest charges	2	1
Interest capitalized	(23)	(29)
Total Interest Expense	19	14
Gain (loss) on derivative	339	(32)
Gain on Early Extinguishment of Debt	28	0
Other Income, Net	1	1
Income (Loss) Before Income Taxes	(1,141)	168
Provision (Benefit) for Income Taxes:
Current	(2)	0
Deferred	408	(426)
Total Provision (Benefit) from Income Taxes	406	(426)
Net Income (Loss)	$ (1,547)	$ 594
Earnings (Loss) Per Common Share:
Basic (in dollars per share)	$ (2.86)	$ 1.10
Diluted (in dollars per share)	$ (2.86)	$ 1.10
Weighted Average Common Shares Outstanding:
Basic (in shares)	540,308,491	539,721,751
Diluted (in shares)	540,308,491	541,320,487
Gas sales
Operating Revenues:
Total operating revenues	$ 248	$ 430
Oil sales
Operating Revenues:
Total operating revenues	52	39
NGL sales
Operating Revenues:
Total operating revenues	50	81
Marketing
Operating Revenues:
Total operating revenues	239	438
Other
Operating Revenues:
Total operating revenues	3	2
Marketing purchases
Operating Costs and Expenses:
Marketing purchases	$ 248	$ 441