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)