DEBT - Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,976,000,000
Ending balance	2,814,000,000
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	(18,000,000)	$ (39,000,000)
Other comprehensive gain before reclassifications	16,000,000	6,000,000
Ending balance	$ (2,000,000)	$ (33,000,000)