Earnings (Loss) Per Share (Computations Of Basic And Diluted Earnings (Loss) Per Share) (Details) (USD $) In Millions, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Earnings (Loss) Per Share
Net loss - numerator for diluted loss per share	$ (286)	$ (11)	$ (722)	$ (516)
Denominator for basic loss per share - weighted-average shares	335	333	334	333
Denominator for basic and diluted loss per share - weighted-average shares	335	333	334	333
Basic loss per share	$ (0.85)	$ (0.03)	$ (2.16)	$ (1.55)
Diluted loss per share	$ (0.85)	$ (0.03)	$ (2.16)	$ (1.55)
Senior convertible notes, employee stock options and deferred stock because inclusion would be anti-dilutive	53	58	55	58
Employee stock options because the options exercise prices were greater than the average market price of shares	14	13	12	11

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.

+ References

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The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period.

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Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period.

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