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Other Financial Data (Property, Plant And Equipment, Net) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment, Net [Abstract]    
Land $ 38 $ 69
Building 739 774
Machinery and equipment 1,932 2,052
Property, plant and equipment, gross 2,709 2,895
Less accumulated depreciation (1,870) (1,999)
Property, plant and equipment, net $ 839 $ 896