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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 02, 2016 lawsuit
Commitments and contingencies
Future purchase commitments	$ 992.6	$ 1,104.3
Commitments for capital expenditures	$ 153.1	$ 186.6
Compania Minera Maricunga | Other regulatory matters
Commitments and contingencies
Number of lawsuits | lawsuit			2

X

- Definition

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

+ References

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X

- Definition

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

+ References

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- Definition

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

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- Definition

Represents the number of lawsuits.

+ References

No definition available.

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- Details

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