v2.4.0.6
Income, Sales-Based And Other Taxes (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income, Sales-Based And Other Taxes [Abstract]      
Net credits/(charges) of deferred income taxes $ 330,000,000 $ (175,000,000) $ 9,000,000
Reconciliation between income tax expense and theoretical U.S. tax rate, statutory rate 35.00% 35.00% 35.00%
Indefinitely reinvested, undistributed earnings from subsidiary companies outside the U.S. 47,000,000,000    
Potential percentage increase in unrecognized tax benefits 50.00%    
Credit of net interest expense on income tax reserves   39,000,000  
Interest expense on income tax reserves 62,000,000   135,000,000
Interest payable on income tax reserves $ 662,000,000 $ 636,000,000