Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 14	$ 95
Restricted Cash and Cash Equivalents, Current	0	90
Accounts receivable	405	474
Inventories	33	163
Derivative assets	431	0
Deferred Tax Assets, Net, Current	0	22
Other current assets	57	57
Total current assets	940	901
Oil and Gas Property, Full Cost Method, Gross	16,384	16,407
Oil and Gas Property, Full Cost Method, Depletion	8,152	8,306
Oil and Gas Property, Full Cost Method, Net	8,232	8,101
Property, Plant and Equipment, Other, Net	182	174
Derivative assets	190	26
Long-term investments	26	63
Deferred taxes	0	19
Other assets	28	37
Total assets	9,598	9,321
Current liabilities:
Accounts payable	32	76
Accrued liabilities	880	978
Deposit Liability, Current	0	90
Advances from joint owners	34	30
Asset retirement obligations	3	54
Derivative liabilities	8	62
Deferred taxes	144	0
Total current liabilities	1,101	1,290
Other liabilities	45	38
Derivative liabilities	0	0
Long-term debt	2,892	3,694
Deferred taxes	1,484	1,142
Asset retirement obligations	183	201
Total long-term liabilities	4,604	5,075
Commitments and contingencies	0	0
Stockholders' equity:
Preferred stock ($0.01 par value, 5,000,000 shares authorized; no shares issued)	0	0
Common stock ($0.01 par value)	1	1
Additional Paid in Capital	1,576	1,539
Treasury stock (at cost)	(10)	(13)
Accumulated other comprehensive loss	(1)	2
Retained earnings	2,327	1,427
Total stockholders' equity	3,893	2,956
Total liabilities and stockholders' equity	$ 9,598	$ 9,321