CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Operating revenues    
Oil $ 229 $ 406
Natural gas 48 78
NGLs 13 27
Financial derivatives 203 (135)
Total operating revenues 493 376
Operating expenses    
Natural gas purchases 7 3
Transportation costs 27 23
Lease operating expense 47 44
General and administrative 47 133
Depreciation, depletion and amortization 224 192
Exploration and other expense 6 8
Taxes, other than income taxes 22 33
Total operating expenses 380 436
Operating income (loss) 113 (60)
Loss on extinguishment of debt 0 (17)
Interest expense (84) (79)
Income (loss) from continuing operations before income taxes 29 (156)
Income tax expense (benefit) 10 (56)
Income (loss) from continuing operations 19 (100)
Income from discontinued operations, net of tax 0 10
Net income (loss) $ 19 $ (90)
Basic and diluted net income (loss) per common share    
Income (loss) from continuing operations (in dollars per share) $ 0.08 $ (0.42)
Income from discontinued operations, net of tax (in dollars per share) $ 0.00 $ 0.04
Net income (loss) (in dollars per share) $ 0.08 $ (0.38)
Basic and diluted weighted average common shares outstanding (in shares) 244 238