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ASSETS IMPAIRMENTS AND RESTRUCTURING (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]      
Total $ 2 $ 0  
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 29 55 $ 55
Provision / Adjustments 2   8
Restructuring Reserve, Accrual Adjustment 0    
Non-cash Reductions     0
Cash Reductions (3)   (34)
Balance at End of Period 28   29
Facility Closing [Member]      
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 10 13 13
Provision / Adjustments 0   1
Restructuring Reserve, Accrual Adjustment 0   1
Cash Reductions 0   (5)
Balance at End of Period 10   10
Employee Severance [Member]      
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 19 42 42
Provision / Adjustments 2   6
Restructuring Reserve, Accrual Adjustment 0   0
Cash Reductions (3)   (29)
Balance at End of Period 18   19
Non-Cash Charges [Member]      
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period $ 0 $ 0 0
Provision / Adjustments     1
Non-cash Reductions     (1)
Cash Reductions     0
Balance at End of Period     $ 0