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Statement Of Consolidated Operations (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Statement Of Consolidated Operations [Abstract] |  |
Sales (H) | $ 6,006 | $ 5,958
Cost of goods sold (exclusive of expenses below) | 5,098 | 4,715
Selling, general administrative, and other expenses | 241 | 245
Research and development expenses | 43 | 43
Provision for depreciation, depletion, and amortization | 369 | 361
Restructuring and other charges (C) | 10 | 6
Interest expense | 123 | 111
Other income, net (G) | (16) | (28)
Total costs and expenses | 5,868 | 5,453
Income from continuing operations before income taxes | 138 | 505
Provision for income taxes | 39 | 138
Income from continuing operations | 99 | 367
Loss from discontinued operations |  | (1)
Net income | 99 | 366
Less: Net income attributable to noncontrolling interests | 5 | 58
NET INCOME ATTRIBUTABLE TO ALCOA | 94 | 308
AMOUNTS ATTRIBUTABLE TO ALCOA COMMON SHAREHOLDERS: |  |
Income from continuing operations | 94 | 309
Loss from discontinued operations |  | (1)
Net income | $ 94 | $ 308
Basic: |  |
Income from continuing operations | $ 0.09 | $ 0.29
Loss from discontinued operations |  |
Net income | $ 0.09 | $ 0.29
Diluted: |  |
Income from continuing operations | $ 0.09 | $ 0.27
Loss from discontinued operations |  |
Net income | $ 0.09 | $ 0.27
Dividends paid per common share | $ 0.03 | $ 0.03

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