Merger (Pro-Forma Impact Of The Merger) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009
Merger [Abstract]
Revenue	$ 33,946	$ 28,677
Net income (loss)	$ 958	$ (689)
Basic earnings (loss) per share	$ 3.02	$ (2.41)
Diluted earnings (loss) per share	$ 2.62	$ (2.41)