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COMMITMENTS (Details)
$ in Millions
9 Months Ended
Sep. 30, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Purchase Obligation $ 1,600
Purchase obligations [Abstract]  
Long-term Purchase Commitment, Period 30 years
Lease commitments [Abstract]  
Operating Lease Commitments, Cancelable Noncancelable and Month-to-month $ 272
Lessee Leasing Arrangements, Operating Leases, Term of Contract 45 years
Percentage of Operating Lease Commitments related to real property 50.00%
Percentage of Operating Lease Commitments related to railcars 45.00%
Percentage of Operating Lease Commitments related to machinery and equipment 5.00%
Guarantees [Abstract]  
Operating Lease Residual Value Guarantees $ 121
Term, other guarantees 30
Maximum potential future payment, other guarantees $ 29