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Income Taxes (Details 1) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Currently payable      
Federal $ 948 $ 743 $ 431
State 91 75 51
International 901 918 861
Deferred      
Federal (123) (3) 181
State (2) 10 12
International 26 97 138
Total provision for income taxes $ 1,841 $ 1,840 $ 1,674