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Income Taxes (Source of Income (Loss) Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Sources of Income (Loss) Before Income Taxes |  |  |
Income from continuing operations before income taxes | $ 1,861 | $ 1,668 | $ 1,479
Discontinued operations before income taxes | (2,235) | (1,931) | 191
Income (loss) before income tax | $ (374) | $ (263) | $ 1,670

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- Definition The portion of earnings or loss from continuing and discontinuing operations before income taxes less the amount attributable to noncontrolling interest. + References No definition available. + Details
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- Definition Sum of operating profit and nonoperating income or expense before income taxes less the amount attributable to noncontrolling interest. + References No definition available. + Details
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- Definition The portion of earnings or loss from discontinuing operations before income taxes less the amount attributable to noncontrolling interest. + References No definition available. + Details
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