DEBT - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,651
Ending balance	2,976	$ 2,651
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Reclassification to Income Statement	0
Beginning balance	(39)	(21)	$ (6)
Other comprehensive gain (loss) before reclassifications	21	(18)	(15)
Ending balance	$ (18)	$ (39)	$ (21)