Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE - FAIR VALUES OF FINANCIAL INSTRUMENTS (Details)

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FAIR VALUE - FAIR VALUES OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Carrying Value    
Fair values of financial instruments    
Non-qualified employee benefit plan investments $ 27 $ 26
Investment in equity securities 14 18
Long-term debt (including current portion) (4,827) (4,795)
Carrying Value | Cross-currency interest rate contracts    
Fair values of financial instruments    
Derivative contracts - assets 20 28
Carrying Value | Interest rate contracts    
Fair values of financial instruments    
Derivative contracts - liabilities (4) (4)
Estimated Fair Value    
Fair values of financial instruments    
Non-qualified employee benefit plan investments 27 26
Investment in equity securities 14 18
Long-term debt (including current portion) (4,837) (4,647)
Estimated Fair Value | Cross-currency interest rate contracts    
Fair values of financial instruments    
Derivative contracts - assets 20 28
Estimated Fair Value | Interest rate contracts    
Fair values of financial instruments    
Derivative contracts - liabilities $ (4) $ (4)