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GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization of Intangible Assets $ 8 $ 1
Finite-Lived Intangible Asset, Expected Amortization, Year One 10  
Finite-Lived Intangible Asset, Expected Amortization, Year Two 10  
Finite-Lived Intangible Asset, Expected Amortization, Year Three 10  
Finite-Lived Intangible Asset, Expected Amortization, Year Four 10  
Finite-Lived Intangible Asset, Expected Amortization, Year Five 10  
Amortization of Intangible Liability (7)  
Finite-Lived Intangible Liabilities, Amortization Credit, Next Twelve Months (8)  
Finite-Lived Intangible Liabilities, Amortization Credit, Year Two (8)  
Finite-Lived Intangible Liabilities, Amortization Credit, Year Three (8)  
Finite-Lived Intangible Liabilities, Amortization Credit, Year Four (8)  
Finite-Lived Intangible Liabilities, Amortization Credit, Year Five $ (8)