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INCOME TAXES: (Tables)

6 Months Ended

Jun. 30, 2023

INCOME TAXES:

Schedule of income tax provision and effective income tax rate

​

The income tax provision and the effective income tax rate for the first six months of 2023 and 2022 consisted of (in millions):

​	​	​	​	​	​	​	​
​		2023			2022		​
Statutory income tax provision	​	$	649.2	​	$	752.9	​
Peruvian royalty	​		18.7	​		26.5	​
Mexican royalty	​		72.3	​		87.4	​
Peruvian special mining tax	​		34.7	​		41.7	​
Total income tax provision	​	$	774.9	​	$	908.5	​
​	​	​	​	​	​	​	​
Effective income tax rate	​	​	36.0	%	​	42.6	%

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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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