v3.25.1
REVENUE: - Revenue by Segment (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenue Recognition    
Net sales $ 3,121.9 $ 2,599.8
Operating segment    
Revenue Recognition    
Net sales 3,170.8 2,641.1
Corporate, other and eliminations    
Revenue Recognition    
Net sales (48.9) (41.3)
Mexican Open-pit | Operating segment    
Revenue Recognition    
Net sales 1,749.4 1,466.0
Mexican IMMSA Unit | Operating segment    
Revenue Recognition    
Net sales 155.5 146.4
Peruvian Operations | Operating segment    
Revenue Recognition    
Net sales 1,266.0 1,028.7
Copper    
Revenue Recognition    
Net sales 2,432.0 2,043.7
Copper | Operating segment    
Revenue Recognition    
Net sales 2,450.1 2,062.7
Copper | Corporate, other and eliminations    
Revenue Recognition    
Net sales (18.1) (19.0)
Copper | Mexican Open-pit | Operating segment    
Revenue Recognition    
Net sales 1,379.2 1,206.2
Copper | Mexican IMMSA Unit | Operating segment    
Revenue Recognition    
Net sales 21.3 27.5
Copper | Peruvian Operations | Operating segment    
Revenue Recognition    
Net sales 1,049.6 829.0
Molybdenum    
Revenue Recognition    
Net sales 300.5 273.6
Molybdenum | Operating segment    
Revenue Recognition    
Net sales 300.5 273.6
Molybdenum | Mexican Open-pit | Operating segment    
Revenue Recognition    
Net sales 164.4 144.6
Molybdenum | Peruvian Operations | Operating segment    
Revenue Recognition    
Net sales 136.1 129.0
Silver    
Revenue Recognition    
Net sales 176.6 111.6
Silver | Operating segment    
Revenue Recognition    
Net sales 199.3 133.3
Silver | Corporate, other and eliminations    
Revenue Recognition    
Net sales (22.6) (21.7)
Silver | Mexican Open-pit | Operating segment    
Revenue Recognition    
Net sales 100.3 66.7
Silver | Mexican IMMSA Unit | Operating segment    
Revenue Recognition    
Net sales 49.5 35.5
Silver | Peruvian Operations | Operating segment    
Revenue Recognition    
Net sales 49.4 31.1
Zinc    
Revenue Recognition    
Net sales 111.4 70.1
Zinc | Operating segment    
Revenue Recognition    
Net sales 118.9 69.5
Zinc | Corporate, other and eliminations    
Revenue Recognition    
Net sales (7.5) 0.6
Zinc | Mexican Open-pit | Operating segment    
Revenue Recognition    
Net sales 51.5 4.3
Zinc | Mexican IMMSA Unit | Operating segment    
Revenue Recognition    
Net sales 67.4 65.2
Other    
Revenue Recognition    
Net sales 101.4 100.8
Other | Operating segment    
Revenue Recognition    
Net sales 102.0 102.0
Other | Corporate, other and eliminations    
Revenue Recognition    
Net sales (0.7) (1.2)
Other | Mexican Open-pit | Operating segment    
Revenue Recognition    
Net sales 53.9 44.2
Other | Mexican IMMSA Unit | Operating segment    
Revenue Recognition    
Net sales 17.2 18.2
Other | Peruvian Operations | Operating segment    
Revenue Recognition    
Net sales $ 30.9 $ 39.6