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Goodwill by Reportable Segment (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]      
Goodwill $ 25,597 $ 25,740 $ 37,234
Latin America
     
Segment Reporting Information [Line Items]      
Goodwill 1,262 1,381  
Asia Pacific
     
Segment Reporting Information [Line Items]      
Goodwill 2,504 2,729  
EEMEA
     
Segment Reporting Information [Line Items]      
Goodwill 2,764 2,763  
Europe Segment
     
Segment Reporting Information [Line Items]      
Goodwill 10,026 9,767  
North America Segment
     
Segment Reporting Information [Line Items]      
Goodwill $ 9,041 $ 9,100