Discontinued Operations (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	16 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011 Assumed Repatriation Of Earnings [Member]	Jun. 30, 2011 Assumed Repatriation Of Earnings [Member]	Jun. 30, 2011 Discontinued Operations [Member]
Total pre-tax proceeds on divestiture of assets							$ 10,000,000,000
Total after-tax proceeds on divestiture of assets assuming repatriation							8,000,000,000
Revenues related to discontinued operations		222,000,000	43,000,000	434,000,000
Income Tax Expense (Benefit)	$ 1,194,000,000	$ 261,000,000	$ 1,385,000,000	$ 775,000,000	$ 744,000,000	$ 744,000,000