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FINANCIAL INSTRUMENTS (Summary of Notional Amounts) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
3.20% Senior Notes due April 2016 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 3.20%    
Debt instrument, maturity date Apr. 01, 2016    
3.20% Senior Notes due April 2016 [Member] | Six-Month LIBOR [Member]      
Derivative [Line Items]      
Floating Rate 2.30%    
4.75% Senior Notes due January 2020 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 4.75%    
Debt instrument, maturity date Jan. 30, 2020    
4.75% Senior Notes due January 2020 [Member] | One-Month LIBOR [Member]      
Derivative [Line Items]      
Floating Rate 3.60%    
4.70% Senior Notes due April 2021 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 4.70%    
Debt instrument, maturity date Apr. 01, 2021    
4.70% Senior Notes due April 2021 [Member] | One-Month LIBOR [Member] | Minimum [Member]      
Derivative [Line Items]      
Floating Rate 2.45%    
4.70% Senior Notes due April 2021 [Member] | One-Month LIBOR [Member] | Maximum [Member]      
Derivative [Line Items]      
Floating Rate 3.39%    
4.25% Senior Notes due April 2024 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 4.25%    
Debt instrument, maturity date Apr. 01, 2024    
4.25% Senior Notes due April 2024 [Member] | One-Month LIBOR [Member] | Minimum [Member]      
Derivative [Line Items]      
Floating Rate 1.54%    
4.25% Senior Notes due April 2024 [Member] | One-Month LIBOR [Member] | Maximum [Member]      
Derivative [Line Items]      
Floating Rate 1.59%    
3.50% Senior Notes due March 2025 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 3.50% 3.50%  
Debt instrument, maturity date Mar. 30, 2025    
3.50% Senior Notes due March 2025 [Member] | One-Month LIBOR [Member]      
Derivative [Line Items]      
Floating Rate 1.44%    
Fair Value Hedging [Member]      
Derivative [Line Items]      
Notional Amount $ 1,200   $ 1,200
Fair Value Hedging [Member] | 3.20% Senior Notes due April 2016 [Member]      
Derivative [Line Items]      
Notional Amount 0   200
Fair Value Hedging [Member] | 4.75% Senior Notes due January 2020 [Member]      
Derivative [Line Items]      
Notional Amount 350   350
Fair Value Hedging [Member] | 4.70% Senior Notes due April 2021 [Member]      
Derivative [Line Items]      
Notional Amount 400   400
Fair Value Hedging [Member] | 4.25% Senior Notes due April 2024 [Member]      
Derivative [Line Items]      
Notional Amount 250   250
Fair Value Hedging [Member] | 3.50% Senior Notes due March 2025 [Member]      
Derivative [Line Items]      
Notional Amount $ 200   $ 0