Earnings Per Share (EPS) (Basic and Diluted Earnings Per Share Computation) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net income from continuing operations	$ 320	$ 222	$ 782	$ 720
Net Income (Loss)	3	2	67	(5)
NET INCOME	$ 323	$ 224	$ 849	$ 715
Weighted Average Common Shares Outstanding	505,988	506,109	505,984	506,030
Total Shares, Basic	505,988	506,109	505,984	506,030
Total Shares, Diluted	506,761	507,091	506,945	507,119
INCOME FROM CONTINUING OPERATIONS, BASIC	$ 0.63	$ 0.44	$ 1.55	$ 1.42
Earnings Per Share, Discontinued Operations, Basic	$ 0.00	$ 0.00	$ 0.13	$ (0.01)
INCOME FROM CONTINUING OPERATIONS, DILUTED	$ 0.63	$ 0.44	$ 1.54	$ 1.42
Earnings Per Share, Discontinued Operations, Diluted	$ 0.00	$ 0.00	$ 0.13	$ (0.01)
Earnings Per Share, Basic, Total	$ 0.63	$ 0.44	$ 1.68	$ 1.41
Earnings Per Share, Diluted, Total	$ 0.63	$ 0.44	$ 1.67	$ 1.41
Stock Options [Member]
Incremental common shares attributable to share based payment arrangements, Basic	0	0	0	0
Incremental common shares attributable to share based payment arrangements, diluted	167	137	161	139
Performance Share [Member]
Incremental common shares attributable to share based payment arrangements, Basic	0	0	0	0
Incremental common shares attributable to share based payment arrangements, diluted	381	707	612	848
Restricted Stock Units [Member]
Incremental common shares attributable to share based payment arrangements, Basic	0	0	0	0
Incremental common shares attributable to share based payment arrangements, diluted	225	138	188	102