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Inventories (Details) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Inventory Combining Work In Process And Raw Materials Alternative Gross [Abstract]    
Raw materials $ 1,225 $ 1,139
Work in process 861 792
Finished products 2,276 2,045
Inventory Gross 4,362 3,976
Less - Reduction to LIFO cost basis (165) (154)
Inventories $ 4,197 $ 3,822