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, 2012
Dec. 31, 2011
Noncontrolling Interest    
Noncontrolling interests in the equity $ 371 $ 339
Cummins India Ltd.
   
Noncontrolling Interest    
Noncontrolling interests in the equity 260 233
Wuxi Cummins Turbo Technologies Co. Ltd.
   
Noncontrolling Interest    
Noncontrolling interests in the equity 75 75
Other
   
Noncontrolling Interest    
Noncontrolling interests in the equity $ 36 $ 31