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Inventories (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2011
Dec. 31, 2010
Inventories footnote [Abstract]    
Inventories under LIFO, Ratio 32.00%  
Inventory, Net [Abstract]    
Raw materials, work-in-process and supplies $ 3,156 $ 2,812
Finished products 4,769 3,970
Total inventories under first-in, first-out method ("FIFO") 7,925 6,782
Less: Last-in, first-out method ("LIFO") adjustment (889) (865)
Total inventories 7,036 5,917
Automotive [Member]
   
Inventory, Net [Abstract]    
Total inventories $ 7,036 $ 5,917