CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Operating Revenues:
Gas sales	$ 340	$ 458	$ 906	$ 1,540
Oil sales	19	19	50	60
NGL sales	22	14	59	47
Marketing	237	216	631	663
Gas gathering	33	42	106	136
Total Operating Revenues	651	749	1,752	2,446
Operating Costs and Expenses:
Marketing purchases	234	213	627	654
Operating expenses	139	176	455	507
General and administrative expenses	61	60	171	188
Restructuring charges	2		77
Depreciation, depletion and amortization	99	275	349	876
Impairment of natural gas and oil properties	817	2,839	2,321	4,374
(Gain) loss on sale of assets, net		1		(276)
Taxes, other than income taxes	24	27	69	84
Total Operating Costs and Expenses	1,376	3,591	4,069	6,407
Operating Loss	(725)	(2,842)	(2,317)	(3,961)
Interest Expense:
Interest on debt	59	51	168	153
Other interest charges	8	2	12	54
Interest capitalized	(41)	(53)	(123)	(155)
Total Interest Expense	26		57	52
Gain (Loss) on Derivatives	71	15	(28)	30
Loss on early extinguishment of debt	(51)		(51)
Other Income, Net	3			2
Loss Before Income Taxes	(728)	(2,827)	(2,453)	(3,981)
Provision (Benefit) for Income Taxes:
Current				7
Deferred	(20)	(1,088)	(20)	(1,539)
Provision (Benefit) for Income Taxes	(20)	(1,088)	(20)	(1,532)
Net Loss	(708)	(1,739)	(2,433)	(2,449)
Mandatory convertible preferred stock dividend	27	27	81	79
Net Loss Attributable to Common Stock	$ (735)	$ (1,766)	$ (2,514)	$ (2,528)
Loss Per Common Share:
Basic	$ (1.52)	$ (4.62)	$ (6.02)	$ (6.65)
Diluted	$ (1.52)	$ (4.62)	$ (6.02)	$ (6.65)
Weighted Average Common Shares Outstanding:
Basic	482,485,150	382,098,080	417,222,661	379,909,748
Diluted	482,485,150	382,098,080	417,222,661	379,909,748