Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Sep. 30, 2012
U.S. Distributor Commitments
  
Commitments and contingencies:  
Licensing agreement term 3 years
Number of days in which distributors can terminate agreements without cause 60 days
Number of days in which distributors can terminate agreements with cause 30 days
Other Guarantees and Commitments
  
Commitments and contingencies:  
Guarantee obligations, maximum potential loss 29
Guarantee obligations, current carrying value 8
Long-term purchase commitment, penalty exposure 102
Annual commitment under purchase contract with emission solutions business supplier from 2012 to 2018 73
Cummins Olayan Energy Limited Guarantee
  
Commitments and contingencies:  
Guarantee obligations, maximum potential loss 18
Xi'an Cummins Engine Company Limited debt guarantee
  
Commitments and contingencies:  
Guarantee obligations, maximum potential loss 7
Residual value guarantees
  
Commitments and contingencies:  
Guarantee obligations, maximum potential loss 1
Other debt guarantees
  
Commitments and contingencies:  
Guarantee obligations, maximum potential loss 3
Engine parts supplier
  
Commitments and contingencies:  
Long-term purchase commitment, penalty exposure 98
Performance bonds and other performance-related guarantees
  
Commitments and contingencies:  
Guarantee obligations, current carrying value 72
Joint Venture Commitments
  
Commitments and contingencies:  
Guarantee obligations commitment 36
Guarantee obligations investment funding expected in current year 19