v2.4.0.6
Supplemental Financial Information (Cash Payments for Interest and Income Taxes)(Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Supplemental Financial Information [Abstract]        
Interest $ 544 $ 540 $ 1,158 $ 1,197
Income taxes $ 904 $ 496 $ 1,022 $ 570