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
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share [Abstract]
Net earnings (loss)—numerator for basic earnings (loss) per share	$ (341)	$ (1,660)
Interest on senior convertible notes	0	0
Net earnings (loss) adjusted for interest on senior convertible notes	$ (341)	$ (1,660)
Denominator for basic earnings (loss) per share - weighted-average shares	335	335
Effect of dilutive securities, Senior convertible notes	0	0
Effect of dilutive securities, Employee options and shares	0	0
Effect of dilutive securities, Assumed treasury shares purchased	0	0
Dilutive potential common shares	335	335
Denominator for diluted earnings (loss) per share - adjusted weighted-average shares	335	335
Basic earnings (loss) per share	$ (1.02)	$ (4.95)
Diluted earnings (loss) per share	$ (1.02)	$ (4.95)
Excluded from calculation, Convertible notes, employee stock options and deferred stock because inclusion would be anti-dilutive	51	46
Excluded from calculation, Employee stock options because the options' exercise price were greater than the average market price of the shares	22	24