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INCOME TAXES: (Tables)

9 Months Ended

Sep. 30, 2022

INCOME TAXES:

Schedule of income tax provision and effective income tax rate

​

The income tax provision and the effective income tax rate for the nine-month periods ended September 30, 2022 and 2021 consisted of (in millions):

​	​	​	​	​	​	​	​
​		2022			2021		​
Statutory income tax provision	​	$	972.7	​	$	1,387.0	​
Peruvian royalty	​		24.7	​		70.1	​
Mexican royalty	​		97.9	​		162.5	​
Peruvian special mining tax	​		41.7	​		84.2	​
Total income tax provision	​	$	1,137.0	​	$	1,703.8	​
​	​	​	​	​	​	​	​
Effective income tax rate	​	​	39.5	%	​	40.0	%

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- Definition

Disclosure of the income tax provision attributable to continuing operations and the effective income tax rate.

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