Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE - FAIR VALUES OF FINANCIAL INSTRUMENTS (Details)

v3.20.1
FAIR VALUE - FAIR VALUES OF FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Carrying Amount    
Fair values of financial instruments    
Non-qualified employee benefit plan investments $ 19 $ 28
Long-term debt (including current portion) (2,183) (2,389)
Estimated Fair Value    
Fair values of financial instruments    
Non-qualified employee benefit plan investments 19 28
Long-term debt (including current portion) $ (2,125) $ (2,544)