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DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Derivative [Line Items]          
Interest expense, net $ (22) $ (28) $ (43) $ (49)  
Other, net 7 7 13 11  
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Other Contract [Member]          
Derivative [Line Items]          
Interest expense, net (1) (4) 9 (22)  
Other, net 0 0 0 0  
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest Rate Swap [Member]          
Derivative [Line Items]          
Fair Value and Carrying Amounts 12   12   $ 21
Interest expense, net 1 4 (9) 22  
Other, net 0 0 0 0  
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Contract [Member]          
Derivative [Line Items]          
Interest expense, net 0 0 0 0  
Other, net 1 2 1 0  
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cross Currency Interest Rate Contract [Member]          
Derivative [Line Items]          
Fair Value and Carrying Amounts 3   3   $ 2
Interest expense, net 0 0 0 0  
Other, net $ (1) $ (2) $ (1) $ 0