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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Available-for-sale) (Details) - USD ($)
$ in Millions
Jun. 30, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost $ 4,880 $ 6,524
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 52 25
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (2) (47)
Available-for-sale Securities 4,930 6,502
Available-for-sale Securities, Current 1,717 1,885
Available-for-sale Securities, Noncurrent 3,281 4,660
Available-for-sale securities including equity and fixed income funds 5,032 6,605
Certificates of Deposit [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 438 804
Available-for-sale Securities 438 804
Commercial Paper [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 100  
Available-for-sale Securities 100  
Corporate Debt Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 4,310 5,646
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 48 15
Marketable Securities, Gross Unrealized Loss in Accumulated OCI   (23)
Available-for-sale Securities 4,358 5,638
Equity Investments [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Marketable Securities, Amortized Cost 32 74
Marketable Securities, Gross Unrealized Gain in Accumulated OCI 4 10
Marketable Securities, Gross Unrealized Loss in Accumulated OCI (2) (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 102 103
Other assets [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale Securities $ 34 $ 60