Annual report pursuant to Section 13 and 15(d)

NONCONTROLLING INTERESTS (Details)

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NONCONTROLLING INTERESTS (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Noncontrolling Interest    
Noncontrolling interests in the equity $ 339 $ 326
Cummins India Ltd.
   
Noncontrolling Interest    
Noncontrolling interests in the equity 233 247
Wuxi Cummins Turbo Technologies Co. Ltd.
   
Noncontrolling Interest    
Noncontrolling interests in the equity 75 60
Other
   
Noncontrolling Interest    
Noncontrolling interests in the equity $ 31 $ 19