GOODWILL AND INTANGIBLE ASSETS (Schedules) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	$ 2,030		$ 2,030		$ 1,967
Intangible assets, Accumulated Amortization	(878)		(878)		(800)
Total intangible assets, Net	1,152		1,152		1,167
Amortization expense	25	$ 27	77	$ 77
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2021	26		26
2022	102		102
2023	100		100
2024	97		97
2025	96		96
2026	90		90
Thereafter	405		405
Total	916		916
Intangible Assets Not Subject to Amortization - Tradenames
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	235		235		235
Total intangible assets, Net	235		235		235
Intangible Assets Not Subject to Amortization - Other
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	1		1		1
Total intangible assets, Net	1		$ 1		1
Customer-related intangibles
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			17 years
Intangible assets, Cost	1,541		$ 1,541		1,479
Intangible assets, Accumulated Amortization	(704)		(704)		(638)
Total intangible assets, Net	837		$ 837		841
Non-compete agreements
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			9 years
Intangible assets, Cost	3		$ 3		3
Intangible assets, Accumulated Amortization	(2)		(2)		(2)
Total intangible assets, Net	1		$ 1		1
Technology
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			14 years
Intangible assets, Cost	142		$ 142		141
Intangible assets, Accumulated Amortization	(72)		(72)		(65)
Total intangible assets, Net	70		$ 70		76
Other
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			5 years
Intangible assets, Cost	108		$ 108		108
Intangible assets, Accumulated Amortization	(100)		(100)		(95)
Total intangible assets, Net	8		$ 8		13
Total Amortizing Intangible Assets
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			17 years
Intangible assets, Cost	1,794		$ 1,794		1,731
Intangible assets, Accumulated Amortization	(878)		(878)		(800)
Total intangible assets, Net	$ 916		$ 916		$ 931