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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Available-for-sale) (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost $ 4,794 $ 4,753
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 15 10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (11) (15)
Available-for-sale Securities 4,798 4,748
Available-for-sale Securities, Current 2,199 2,113
Available-for-sale Securities, Noncurrent 2,685 2,719
Available-for-sale securities including equity and fixed income funds 4,914 4,856
Certificates of Deposit [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 419 27
Available-for-sale Securities 419 27
Commercial Paper [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 480 750
Available-for-sale Securities 480 750
Corporate Debt Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 3,864 3,945
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 11 10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (6) (8)
Available-for-sale Securities 3,869 3,947
Equity Investments [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 31 31
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 4  
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (5) (7)
Available-for-sale Securities 30 24
Equity and fixed income funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities 116 108
Other assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities $ 30 $ 24