GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Intangible Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 261	$ 263
Finite-Lived Intangible Assets, Accumulated Amortization	(46)	(42)
Finite-Lived Intangible Assets, Net	215	221
Above-market supply contracts, Gross Amount	(71)	(71)
Above-market supply contracts, Accumulated Amortization	15	14
Above-market supply contracts, Net	(56)	(57)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	90	95
Finite-Lived Intangible Assets, Accumulated Amortization	(9)	(8)
Finite-Lived Intangible Assets, Net	81	87
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	60	60
Finite-Lived Intangible Assets, Accumulated Amortization	(8)	(6)
Finite-Lived Intangible Assets, Net	52	54
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	18	18
Finite-Lived Intangible Assets, Accumulated Amortization	(3)	(2)
Finite-Lived Intangible Assets, Net	15	16
Mining permits
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	72	72
Finite-Lived Intangible Assets, Accumulated Amortization	(26)	(26)
Finite-Lived Intangible Assets, Net	46	46
Supplier relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	21	18
Finite-Lived Intangible Assets, Accumulated Amortization	0	0
Finite-Lived Intangible Assets, Net	$ 21	$ 18