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Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Income Statement [Abstract] |  |
Revenues | $ 3,341 | $ 3,242
Cost of sales: |  |
Production and delivery | 2,200 | 2,499
Depreciation, depletion and amortization | 389 | 662
Impairment of oil and gas properties | 0 | 3,787
Total cost of sales | 2,589 | 6,948
Selling, general and administrative expenses | 153 | 138
Mining exploration and research expenses | 15 | 18
Environmental obligations and shutdown costs | 27 | 10
Net gain on sales of assets | (23) | 0
Total costs and expenses | 2,761 | 7,114
Operating income (loss) | 580 | (3,872)
Interest expense, net | (167) | (191)
Other income, net | 25 | 36
Income (loss) from continuing operations before income taxes and equity in affiliated companies’ net earnings | 438 | (4,027)
Provision for income taxes | (174) | (77)
Equity in affiliated companies’ net earnings | 4 | 7
Net income (loss) from continuing operations | 268 | (4,097)
Net income (loss) from discontinued operations | 38 | (4)
Net income (loss) | 306 | (4,101)
Net income attributable to noncontrolling interests: |  |
Continuing operations | (75) | (62)
Discontinued operations | (3) | (10)
Preferred dividends attributable to redeemable noncontrolling interest | 0 | 11
Net income (loss) attributable to common stockholders | $ 228 | $ (4,184)
Basic and diluted net income (loss) per share attributable to common stockholders: |  |
Continuing operations | $ 0.13 | $ (3.34)
Discontinued operations | 0.03 | (0.01)
Basic and diluted net income (loss) per share attributable to common stockholders: | $ 0.16 | $ (3.35)
Basic | 1,446 | 1,251
Diluted | 1,454 | 1,251

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