v3.10.0.1
EQUITY - AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Balance     $ 7,357 $ 7,343
Balance $ 6,343 $ 7,435 6,343 7,435
Foreign Exchange Translation Adjustment        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Balance (5,562) (5,473) (5,547) (5,734)
Other comprehensive income (loss) before reclassifications (1,028) (145) (1,043) 116
Amount reclassified from accumulated other comprehensive income 14 0 14 0
Balance (6,576) (5,618) (6,576) (5,618)
Deferred Gains (Losses) on Hedging Activities        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Balance (244) (111) (244) (102)
Other comprehensive income (loss) before reclassifications 161 (64) 164 (71)
Amount reclassified from accumulated other comprehensive income 3 (17) 0 (19)
Balance (80) (192) (80) (192)
Pension and Other Postretirement Liability Adjustments        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Balance (141) (145) (140) (145)
Other comprehensive income (loss) before reclassifications 2 0 1 0
Amount reclassified from accumulated other comprehensive income 0 0 0 0
Balance (139) (145) (139) (145)
Unrealized Gains (Losses) on Investments        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Balance 0 3 1 3
Other comprehensive income (loss) before reclassifications 0 1 0 1
Amount reclassified from accumulated other comprehensive income 0 0 (1) 0
Balance 0 4 0 4
Accumulated Other Comprehensive Income (Loss)        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Balance (5,947) (5,726) (5,930) (5,978)
Other comprehensive income (loss) before reclassifications (865) (208) (878) 46
Amount reclassified from accumulated other comprehensive income 17 (17) 13 (19)
Balance $ (6,795) $ (5,951) $ (6,795) $ (5,951)