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Earnings (Loss) Per Share (Computations Of Basic And Diluted Earnings (Loss) Per Share) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Earnings Per Share [Abstract]                      
Net earnings (loss) – numerator for basic earnings (loss) per share                 $ (1,876) $ (1,979) $ (471)
Denominator for basic earnings (loss) per share - weighted average shares                 335 335 333
Effect of dilutive securities, Employee options and shares                 0 0 0
Effect of dilutive securities, Assumed treasury shares purchased                 0 0 0
Diluted potential common shares                 0 0 0
Denominator for diluted earnings loss per share - weighted-average shares                 335 335 333
Basic earnings (loss) per share $ 0.78 $ (0.71) $ (0.72) $ (4.95) $ (3.27) $ (0.48) $ (0.85) $ (1.31) $ (5.60) $ (5.91) $ (1.41)
Diluted earnings (loss) per share $ 0.69 $ (0.71) $ (0.72) $ (4.95) $ (3.27) $ (0.48) $ (0.85) $ (1.31) $ (5.60) $ (5.91) $ (1.41)
Excluded from calculation, Convertible notes, employee stock options and deferred stock because inclusion would be anti-dilutive                 46 51 57
Excluded from calculation, Employee stock options because the options' exercise price was greater than the average market price of the shares                 23 20 12