CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Cash flows from operating activities
Net loss	$ (37)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation, depletion and amortization	198
Gain on sale of assets	(13)
Impairment charges	3
Amortization of equity compensation expense	4
Non-cash portion of exploration expense	7
Amortization of debt issuance costs	5
Asset and liability changes
Accounts receivable	(16)
Accounts payable	6
Derivative instruments	111
Accrued interest	53
Other asset changes	3
Other liability changes	(17)
Net cash provided by operating activities	307
Cash flows from investing activities
Capital expenditures	(459)
Net proceeds from the sale of assets	17
Net cash used in investing activities	(442)
Cash flows from financing activities
Proceeds from long-term debt	550
Repayment of long-term debt	(570)
Cash contributions from parent	186
Net cash provided by financing activities	166
Change in cash and cash equivalents	31
Cash and cash equivalents
Beginning of period	48
End of period	$ 79