CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended	5 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	May 24, 2012 Predecessor	Dec. 31, 2011 Predecessor
Cash flows from operating activities
Net income (loss)			$ 178	$ 262
Net income (loss)	(255)	549
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation, depletion and amortization	268	666	319	612
Gain on sale of assets		(468)
Deferred income tax expense	1	1	199	304
Loss from unconsolidated affiliates, net of cash distributions	15	37	12	53
Impairment and ceiling test charges	1	46	62	158
Loss on extinguishment of debt	14	9
Amortization of equity compensation expense	17	22
Non-cash portion of exploration expense	23	39
Other non-cash income items	13	22	7	4
Asset and liability changes
Accounts receivable	(73)	(51)	132	(20)
Accounts payable	66	80	(56)	(67)
Derivative instruments	281	56	(201)	47
Accrued interest	57	(3)	(1)	(1)
Other asset changes	(18)	(10)	(7)	95
Other liability changes	39	(20)	(64)	(21)
Net cash provided by operating activities	449	975	580	1,426
Cash flows from investing activities
Capital expenditures	(877)	(1,924)	(636)	(1,591)
Net proceeds from the sale of assets and investments	110	1,451	9	612
Cash paid for acquisitions, net of cash acquired	(7,126)	(2)	(1)	(22)
Increase in note receivable with parent				(236)
Net cash used in investing activities	(7,893)	(475)	(628)	(1,237)
Cash flows from financing activities
Proceeds from long term debt	5,477	1,880	215	2,030
Repayment of long term debt	(1,139)	(2,190)	(1,065)	(1,480)
Distributions to member		(200)
Contributions from member	3,323
Contributions from parent			960
Change in note payable with parent				(781)
Debt issuance costs	(154)	(5)		(7)
Net cash (used in) provided by financing activities	7,507	(515)	110	(238)
Change in cash and cash equivalents	63	(15)	62	(49)
Cash and cash equivalents
Beginning of period		63	25	74
End of period	63	48	87	25
Supplemental cash flow information
Interest paid, net of amounts capitalized	145	305	7	9
Income tax payments (refunds)	$ 2	$ 4	$ 2	$ (158)