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Goodwill (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Europe
Dec. 31, 2012
Europe
Dec. 31, 2011
Europe
Dec. 31, 2013
North America
Dec. 31, 2012
North America
Dec. 31, 2011
North America
Dec. 31, 2013
South America
Dec. 31, 2012
South America
Dec. 31, 2011
South America
Dec. 31, 2011
Asia Pacific
Dec. 31, 2013
Asia Pacific
Dec. 31, 2012
Asia Pacific
Dec. 31, 2013
Other
Dec. 31, 2012
Other
Dec. 31, 2011
Other
Dec. 31, 2010
Other
Changes in the carrying amount of goodwill                                        
Balance of Goodwill at beginning of period   $ 2,079 $ 2,082 $ 2,821 $ 1,006 $ 983 $ 1,009 $ 743 $ 740 $ 743 $ 325 $ 354 $ 387 $ 677     $ 5 $ 5 $ 5 $ 5
Acquisitions       8     8                          
Impairment charge 0     (641)                   (641)            
Translation effects   (20) (3) (106) 38 23 (34) (9) 3 (3) (49) (29) (33) (36)            
Balance of Goodwill at end of the period 2,059 2,059 2,079 2,082 1,044 1,006 983 734 743 740 276 325 354       5 5 5 5
Accumulated impairment losses                           $ 1,135 $ 1,135 $ 1,135