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STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY Part 3 OCI (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Other Comprehensive Income (Loss), before Tax [Abstract]          
Change in cumulative translation adjustment, before tax $ 17 $ (42) $ 60 $ (6)  
Amortization of unrecognized prior service credits included in net periodic costs, before tax (11) (12) (33) (34)  
Unrealized gain (loss), before tax 49 (11) (13) 21  
Reclassification adjustment for (gain) loss included in net income, before tax 10 30 17 90  
Total other comprehensive income (loss), before tax 65 (35) 31 71  
Change in cumulative translation adjustment 17 (42) 60 (6) $ (97)
Amortization of unrecognized prior service credits included in net periodic costs (7) (7) (20) (21)  
Unrealized gain (loss) 31 (7) (8) 13  
Reclassification adjustment for losses included in net income, net 7 19 11 56  
Total other comprehensive income (loss), net of tax $ 48 $ (37) $ 43 $ 42 $ 109