COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 02, 2016 lawsuit
COMMITMENTS AND CONTINGENCIES
Future operating lease obligations	$ 43.2	$ 39.4
Commitments for capital expenditures	485.1	424.1
Future purchase commitments	$ 2,684.7	$ 1,617.1
Compania Minera Maricunga ("CMM") \| Other regulatory matters
COMMITMENTS AND CONTINGENCIES
Number of lawsuits \| lawsuit			2

The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

The amount of future operating lease expenditures that the entity is committed to make.

+ References

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- Definition

The amount of future purchase commitments the entity is committed to make.

+ References

No definition available.

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- Definition

Represents the number of lawsuits.

+ References

No definition available.

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