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INCOME TAXES: (Tables)

9 Months Ended

Sep. 30, 2021

INCOME TAXES:

Schedule of income tax provision and effective income tax rate

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The income tax provision and the effective income tax rate for the first nine months of 2021 and 2020 consisted of (in millions):

​	​	​	​	​	​	​	​
​		2021			2020		​
Statutory income tax provision	​	$	1,387.0	​	$	694.7	​
Peruvian royalty	​		70.1	​		14.1	​
Mexican royalty	​		162.5	​		44.1	​
Peruvian special mining tax	​		84.2	​		31.8	​
Total income tax provision	​	$	1,703.8	​	$	784.7	​
​	​	​	​	​	​	​	​
Effective income tax rate	​	​	40.0	%	​	44.4	%

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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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