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FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Disclosure of fair value measurement of assets [abstract]
Assets	$ 45,286	$ 45,965
Recurring fair value measurement
Disclosure of fair value measurement of assets [abstract]
Assets (liabilities)	318
Recurring fair value measurement | Other investments
Disclosure of fair value measurement of assets [abstract]
Assets	102
Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]
Disclosure of fair value measurement of assets [abstract]
Assets	216
Carrying amount
Disclosure of fair value measurement of assets [abstract]
Financial assets	519	1,529
Financial liabilities	5,406	6,344
Carrying amount | Debt
Disclosure of fair value measurement of assets [abstract]
Financial liabilities	4,774	4,782
Carrying amount | Other Liabilities1 [Member]
Disclosure of fair value measurement of assets [abstract]
Financial liabilities	632	1,562
Carrying amount | Other investments
Disclosure of fair value measurement of assets [abstract]
Financial assets	102	112
Carrying amount | Other assets
Disclosure of fair value measurement of assets [abstract]
Financial assets	417	1,358
Carrying amount | Derivatives
Disclosure of fair value measurement of assets [abstract]
Financial assets	0	59
At fair value [member]
Disclosure of fair value measurement of assets [abstract]
Financial assets	519	1,529
Financial liabilities	5,572	6,484
At fair value [member] | Debt
Disclosure of fair value measurement of assets [abstract]
Financial liabilities	4,940	4,922
At fair value [member] | Other Liabilities1 [Member]
Disclosure of fair value measurement of assets [abstract]
Financial liabilities	632	1,562
At fair value [member] | Other investments
Disclosure of fair value measurement of assets [abstract]
Financial assets	102	112
At fair value [member] | Other assets
Disclosure of fair value measurement of assets [abstract]
Financial assets	417	1,358
At fair value [member] | Derivatives
Disclosure of fair value measurement of assets [abstract]
Financial assets	0	$ 59
Level 1 of fair value hierarchy [member] | Recurring fair value measurement
Disclosure of fair value measurement of assets [abstract]
Assets (liabilities)	102
Level 1 of fair value hierarchy [member] | Recurring fair value measurement | Other investments
Disclosure of fair value measurement of assets [abstract]
Assets	102
Level 1 of fair value hierarchy [member] | Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]
Disclosure of fair value measurement of assets [abstract]
Assets	0
Significant other observable inputs (Level 2) | Recurring fair value measurement
Disclosure of fair value measurement of assets [abstract]
Assets (liabilities)	216
Significant other observable inputs (Level 2) | Recurring fair value measurement | Other investments
Disclosure of fair value measurement of assets [abstract]
Assets	0
Significant other observable inputs (Level 2) | Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]
Disclosure of fair value measurement of assets [abstract]
Assets	216
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement
Disclosure of fair value measurement of assets [abstract]
Assets (liabilities)	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement | Other investments
Disclosure of fair value measurement of assets [abstract]
Assets	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurement | Receivables from provisional copper and gold sales [Member]
Disclosure of fair value measurement of assets [abstract]
Assets	$ 0

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- Definition

The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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