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OTHER CURRENT ASSETS - MARKETABLE SECURITIES AND OTHER SHORT-TERM INVESTMENTS (DETAILS) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Marketable Securities and Other Short-Term Investments    
Marketable securities and other short-term investments $ 234 $ 230
Held-to-maturity 76 120
Trading $ 158 110
Maximum maturity period 12 months  
Trading securities net gain $ 6 3
Foreign government securities    
Marketable Securities and Other Short-Term Investments    
Marketable securities and other short-term investments 61 137
Corporate debt securities    
Marketable Securities and Other Short-Term Investments    
Marketable securities and other short-term investments 92 25
Certificate of deposits/time deposits    
Marketable Securities and Other Short-Term Investments    
Marketable securities and other short-term investments 55 46
Other    
Marketable Securities and Other Short-Term Investments    
Marketable securities and other short-term investments $ 26 $ 22