XML 83 R55.htm IDEA: XBRL DOCUMENT v3.8.0.1
STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY Part 2 AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cumulative Translation Adjustment $ (269)   $ (296) $ (381)
Change in cumulative translation adjustment 27 $ 7 85  
Benefit Plans Unrecognized Prior Service Credits 129   136 163
Change in Benefit Plans Unrecognized Prior Service Credits (7)   (27)  
Unrealized Gains (Losses) on Derivative Instruments (71)   (48) (62)
Change in Unrealized Gains (Losses) on Derivative Instruments (23)   14  
Unrealized Losses on Investments (1)   (1) (1)
Change in Unrealized Losses on Investments 0   0  
Accumulated Other Comprehensive Income (Loss), Net of Tax (212)   (209) $ (281)
Total other comprehensive income (loss), net of tax $ (3) $ (25) $ 72