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DERIVATIVES - Interest-Rate Contracts (Details) - Interest-rate contract - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
May 31, 2018
Derivatives      
Variable rate indebtedness amount     $ 1,300
Loss recorded in other non-operating expense $ 4 $ 6  
Payments received $ 0    
One month LIBOR      
Derivatives      
Interest rate to be in place to receive payment     2.75%