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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Available-for-sale) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Document Period End Date Jun. 30, 2017  
Marketable Securities, Amortized Cost $ 5,541 $ 4,753
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 25 10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (9) (15)
Available-for-sale Securities 5,557 4,748
Available-for-sale Securities, Current 3,035 2,113
Available-for-sale Securities, Noncurrent 2,580 2,719
Available-for-sale securities including equity and fixed income funds 5,678 4,856
Certificates of Deposit [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 557 27
Available-for-sale Securities 557 27
Commercial Paper [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 1,056 750
Available-for-sale Securities 1,056 750
Corporate Debt Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 3,870 3,945
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 15 10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (4) (8)
Available-for-sale Securities 3,881 3,947
Equity Investments [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 58 31
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 10  
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (5) (7)
Available-for-sale Securities 63 24
Equity and fixed income funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities 121 108
Other assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities $ 63 $ 24