v3.26.1
COMMITMENTS AND CONTINGENCIES: (Tables)
6 Months Ended
Jun. 30, 2026
COMMITMENTS AND CONTINGENCIES:  
Schedule of environmental capital investments

Environmental capital investments in the six-month periods ended June 30, 2026 and 2025 were as follows (in millions):

  ​ ​ ​

2026

  ​ ​ ​

2025

Peruvian operations

$

4.6

$

6.9

Mexican operations

 

133.5

 

84.2

$

138.1

$

91.1