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FINANCIAL INSTRUMENTS (Summary of Notional Amounts) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
4.25% Senior Notes due April 2024 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 4.25%    
Debt instrument, maturity date Apr. 01, 2024    
3.50% Senior Notes due March 2025 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 3.50%    
Debt instrument, maturity date Mar. 30, 2025    
3.45% Senior Notes due June 2026 [Member]      
Derivative [Line Items]      
Debt instrument, interest rate 3.45%    
Debt instrument, maturity date Jun. 30, 2026    
Fair Value Hedging [Member]      
Derivative [Line Items]      
Notional Amount     $ 1,200
Fair Value Hedging [Member] | One-Month LIBOR [Member] | Minimum [Member]      
Derivative [Line Items]      
Floating Rate 2.20%   1.40%
Fair Value Hedging [Member] | One-Month LIBOR [Member] | Maximum [Member]      
Derivative [Line Items]      
Floating Rate 3.00%   3.60%
Interest Rate Swaps [Member] | Fair Value Hedging [Member]      
Derivative [Line Items]      
Notional Amount $ 1,200 $ 1,200  
Interest Rate Swaps [Member] | Fair Value Hedging [Member] | 4.25% Senior Notes due April 2024 [Member]      
Derivative [Line Items]      
Notional Amount 250 250  
Interest Rate Swaps [Member] | Fair Value Hedging [Member] | 3.50% Senior Notes due March 2025 [Member]      
Derivative [Line Items]      
Notional Amount 600 600  
Interest Rate Swaps [Member] | Fair Value Hedging [Member] | 3.45% Senior Notes due June 2026 [Member]      
Derivative [Line Items]      
Notional Amount $ 350 $ 350