FINANCIAL INSTRUMENTS (Derivative) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	$ 80
Cash and cash equivalents	4,758	$ 8,146
Restricted cash and cash equivalents	1,208	111
Restricted Cash and Cash Equivalents, Noncurrent	97	133
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	6,063	8,390	$ 8,314	$ 3,903
Bank Time Deposits
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	300	500
Designated for Smelter Development Projects
Cash and Cash Equivalents [Line Items]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	200	$ 1,800
Export Proceeds
Cash and Cash Equivalents [Line Items]
Restricted cash and cash equivalents	1,100
Assurance Bonds
Cash and Cash Equivalents [Line Items]
Restricted cash and cash equivalents	$ 145