Earnings Per Share (EPS) And Dividends (Basic And Diluted Earnings Per Share Computation) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Earnings Per Share (EPS) And Dividends [Abstract]
Continuing Operations	$ 493	$ 462
Discontinued Operations	0	64
NET INCOME	$ 493	$ 526
Weighted Average Common Shares Outstanding, Basic	506,010	505,979
Weighted Average Common Shares Outstanding, Diluted	506,010	505,979
Effect of Stock Based Compensation Awards, Basic	0	0
Effect of Stock Based Compensation Awards, Diluted	1,019	1,153
Total Shares, Basic	506,010	505,979
Total Shares, Diluted	507,029	507,132
Continuing Operations, Basic	$ 0.97	$ 0.91
Discontinued Operations, Basic	$ 0.00	$ 0.13
Continuing Operations, Diluted	$ 0.97	$ 0.91
Discontinued Operations, Diluted	$ 0.00	$ 0.13
Net Income, Basic	$ 0.97	$ 1.04
Net Income, Diluted	$ 0.97	$ 1.04