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STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY Part 2 AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Cumulative Translation Adjustment $ (338)   $ (338)   $ (381) $ (284)
Change in cumulative translation adjustment 36 $ (70) 43 $ 36 (97)  
Benefit Plans Unrecognized Prior Service Credits 150   150   163 129
Change in Benefit Plans Unrecognized Prior Service Credits     (13)   34  
Unrealized Gains (Losses) on Derivative Instruments (97)   (97)   (62) (234)
Change in Unrealized Gains (Losses) on Derivative Instruments     (35)   172  
Unrealized Losses on Investments (1)   (1)   (1) (1)
Change in Unrealized Losses on Investments     0   0  
Accumulated Other Comprehensive Income (Loss), Net of Tax (286)   (286)   (281) $ (390)
Total other comprehensive income (loss), net of tax $ 20 [1] $ (6) [1] $ (5) $ 79 $ 109  
[1] For additional information regarding the impact of reclassifications into earnings, see Note 6, "Derivative and Non-Derivative Financial Instruments".