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Accounting Policies Schedule of Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Feb. 13, 2013
Venezuela foreign currency devaluation 88.00%   32.00%
Exchange rate net charges, total $ 42 $ 51  
Exchange rate net charges on other expense, net 54 34  
Exchange rate net charges on income taxes 12 17  
Charge for Venezuelan non-monetary assets to their net realizable value $ 115.7 $ 0