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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Available-for-sale) (Details) - USD ($)
$ in Millions
Sep. 30, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost $ 5,051 $ 6,524
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 40 25
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (2) (47)
Available-for-sale Securities 5,089 6,502
Available-for-sale Securities, Current 2,128 1,885
Available-for-sale Securities, Noncurrent 3,035 4,660
Available-for-sale securities including equity and fixed income funds 5,197 6,605
Certificates of Deposit [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 469 804
Available-for-sale Securities 469 804
Commercial Paper [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 540  
Available-for-sale Securities 540  
Corporate Debt Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 4,011 5,646
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 36 15
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (1) (23)
Available-for-sale Securities 4,046 5,638
Equity Investments [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 31 74
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 4 10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (1) (24)
Available-for-sale Securities 34 60
Equity and fixed income funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities 108 103
Other assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities $ 34 $ 60