v2.4.0.6
Cash Flow Information (Cash Payments For Interest And Income Taxes) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash Flow Information [Abstract]      
Cash payments for interest $ 557,000,000 $ 703,000,000 $ 820,000,000
Cash payments for income taxes 27,254,000,000 18,941,000,000 15,427,000,000
Deposit for potential asset sale $ 3,600,000,000