INCOME TAXES: (Tables)

9 Months Ended

Sep. 30, 2024

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 period ended September 30, 2024 and 2023 consisted of (in millions):

	2024			2023
Statutory income tax provision	$	1,298.7		$	985.8
Peruvian royalty		45.5			30.2
Mexican royalty		116.3			102.5
Peruvian special mining tax		68.1			51.7
Total income tax provision	$	1,528.6		$	1,170.2
Effective income tax rate		37.2	%		36.9	%