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GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Intangible Assets and Liabilities (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 261 | $ 263
Finite-Lived Intangible Assets, Accumulated Amortization | (49) | (42)
Finite-Lived Intangible Assets, Net, Total | 212 | 221
Above-market supply contracts, Gross Amount | (71) | (71)
Above-market supply contracts, Accumulated Amortization | 17 | 14
Above-market supply contracts, Net | (54) | (57)
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 90 | 95
Finite-Lived Intangible Assets, Accumulated Amortization | (11) | (8)
Finite-Lived Intangible Assets, Net, Total | 79 | 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, Total | 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, Total | 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, Total | 46 | 46
Supplier relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 21 | 18
Finite-Lived Intangible Assets, Accumulated Amortization | (1) | 0
Finite-Lived Intangible Assets, Net, Total | $ 20 | $ 18

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