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Property, Plant and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment, Net [Abstract]  
Manufacturing group's property, plant and equipment, net
                     
(Dollars in millions)  

Useful Lives

(in years)

 

December 31,

2011

   

January 1,

2011

 

Land and buildings

  4 –40   $ 1,502     $ 1,453  

Machinery and equipment

  1 –15     3,591       3,348  
          5,093       4,801  

Accumulated depreciation and amortization

        (3,097     (2,869
        $ 1,996     $ 1,932