GOODWILL AND INTANGIBLE ASSETS - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 19	$ 16
Accumulated Amortization	(7)	(7)
Total	12	9
Customer relationships
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	7	8
Accumulated Amortization	(3)	(3)
Total	$ 4	$ 5
Remaining Weighted Average Useful Life (Years)	2 years 8 months 12 days	3 years 8 months 12 days
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5	$ 5
Accumulated Amortization	(2)	(1)
Total	$ 3	$ 4
Remaining Weighted Average Useful Life (Years)	2 years 8 months 12 days	3 years 8 months 12 days
Developed technology
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7	$ 3
Accumulated Amortization	(2)	(3)
Total	$ 5	$ 0
Remaining Weighted Average Useful Life (Years)	8 months 12 days	0 years