CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Operating revenues
Oil	$ 245	$ 474	$ 781	$ 1,341
Natural gas	58	67	152	220
NGLs	16	31	44	88
Financial derivatives	434	381	458	(44)
Total operating revenues	753	953	1,435	1,605
Operating expenses
Natural gas purchases	9	8	24	16
Transportation costs	30	22	82	71
Lease operating expense	45	48	139	142
General and administrative	32	33	114	208
Depreciation, depletion and amortization	260	228	737	634
Impairment charges	0	1	0	1
Exploration and other expense	2	5	14	18
Taxes, other than income taxes	20	35	65	102
Total operating expenses	398	380	1,175	1,192
Operating income	355	573	260	413
Loss on extinguishment of debt	0	0	(41)	(17)
Interest expense	(84)	(76)	(249)	(235)
Income (loss) from continuing operations before income taxes	271	497	(30)	161
Income tax expense (benefit)	95	191	(13)	67
Income (loss) from continuing operations	176	306	(17)	94
(Loss) income from discontinued operations, net of tax	0	(1)	0	3
Net income (loss)	$ 176	$ 305	$ (17)	$ 97
Basic and diluted net income (loss) per common share
Income (loss) from continuing operations (in dollars per share)	$ 0.72	$ 1.25	$ (0.07)	$ 0.39
Income from discontinued operations, net of tax (in dollars per share)	0.00	0.00	0.00	0.01
Net income (loss) (in dollars per share)	$ 0.72	$ 1.25	$ (0.07)	$ 0.40
Basic and diluted weighted average common shares outstanding (in shares)	244	244	244	241