v3.7.0.1
EQUITY - AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax    
Balance at beginning of period $ (5,978)  
Balance at end of period (5,726)  
Accumulated Other Comprehensive Income (Loss)    
Accumulated Other Comprehensive Income (Loss), Net of Tax    
Balance at beginning of period (5,978) $ (6,360)
Other comprehensive income (loss) before reclassifications 254 327
Amount reclassified from accumulated other comprehensive income (2) 7
Balance at end of period (5,726) (6,026)
Foreign Exchange Translation Adjustment    
Accumulated Other Comprehensive Income (Loss), Net of Tax    
Balance at beginning of period (5,734) (6,443)
Other comprehensive income (loss) before reclassifications 261 511
Balance at end of period (5,473) (5,932)
Deferred Gains (Losses) on Hedging Activities    
Accumulated Other Comprehensive Income (Loss), Net of Tax    
Balance at beginning of period (102) 214
Other comprehensive income (loss) before reclassifications (7) (184)
Amount reclassified from accumulated other comprehensive income (2) 7
Balance at end of period (111) 37
Pension and Other Postretirement Liability Adjustments    
Accumulated Other Comprehensive Income (Loss), Net of Tax    
Balance at beginning of period (145) (134)
Balance at end of period (145) (134)
Unrealized Gains (Losses) on Investments    
Accumulated Other Comprehensive Income (Loss), Net of Tax    
Balance at beginning of period 3 3
Balance at end of period $ 3 $ 3