v3.25.1
INCOME TAXES: (Tables)
3 Months Ended
Mar. 31, 2025
INCOME TAXES:  
Schedule of income tax provision and effective income tax rate

The income tax provision and the effective income tax rate for the three-month period ended March 31, 2025 and 2024 consisted of (in millions):

    

2025

    

2024

Statutory income tax provision

$

445.3

$

363.1

Peruvian royalty

 

15.1

 

9.9

Mexican royalty

 

47.4

 

30.6

Peruvian special mining tax

 

25.0

 

19.8

Total income tax provision

$

532.8

$

423.4

Effective income tax rate

36.0

%

36.6

%