| Schedule of financial information relating to Company's segments |
| | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2026 | | | (in millions) | | | | | Mexican | | | | | | | | Corporate, other | | | | | | Mexican | | IMMSA | | Peruvian | | Segment | | and | | | | | | Open-pit | | Unit | | Operations | | Total | | eliminations | | Consolidated | Net sales to external customers | | $ | 2,505.5 | | $ | 199.0 | | $ | 1,584.4 | | $ | 4,289.0 | | $ | — | | $ | 4,289.0 | Intersegment sales | | | 6.4 | | | 69.0 | | | — | | | 75.4 | | | (75.4) | | | — | Cost of sales (exclusive of depreciation, amortization and depletion) | | | 761.6 | | | 155.6 | | | 553.3 | | | 1,470.5 | | | (80.9) | | | 1,389.5 | Selling, general and administrative | | | 23.4 | | | (1.3) | | | 10.4 | | | 32.6 | | | 2.8 | | | 35.3 | Depreciation, amortization and depletion | | | 115.4 | | | 20.9 | | | 79.7 | | | 215.9 | | | 10.1 | | | 226.0 | Exploration | | | 0.9 | | | 4.7 | | | 5.1 | | | 10.7 | | | 4.1 | | | 14.9 | Operating income | | $ | 1,610.7 | | $ | 88.0 | | $ | 935.9 | | $ | 2,634.6 | | $ | (11.4) | | | 2,623.2 | Less: | | | | | | | | | | | | | | | | | | | Interest, net | | | | | | | | | | | | | | | | | | (30.6) | Other income (expense) | | | | | | | | | | | | | | | | | | 6.8 | Income before income taxes | | | | | | | | | | | | | | | | | $ | 2,599.4 | Capital investment | | $ | 137.4 | | $ | 37.0 | | $ | 246.9 | | $ | 421.3 | | $ | 1.5 | | $ | 422.8 | Property and mine development, net | | $ | 5,138.0 | | $ | 831.2 | | $ | 4,218.4 | | $ | 10,187.7 | | $ | 474.3 | | $ | 10,662.0 | Total assets | | $ | 9,287.6 | | $ | 1,606.7 | | $ | 7,198.4 | | $ | 18,092.7 | | $ | 6,035.1 | | $ | 24,127.7 |
| | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2026 | | | (in millions) | | | | | Mexican | | | | | | | | Corporate, other | | | | | | Mexican | | IMMSA | | Peruvian | | Segment | | and | | | | | | Open-pit | | Unit | | Operations | | Total | | eliminations | | Consolidated | Net sales to external customers | | $ | 4,938.4 | | $ | 436.2 | | $ | 3,165.8 | | $ | 8,540.4 | | $ | — | | $ | 8,540.4 | Intersegment sales | | | 17.0 | | | 150.3 | | | — | | | 167.3 | | | (167.3) | | | — | Cost of sales (exclusive of depreciation, amortization and depletion) | | | 1,649.7 | | | 305.4 | | | 1,111.1 | | | 3,066.2 | | | (177.9) | | | 2,888.3 | Selling, general and administrative | | | 40.3 | | | 4.3 | | | 20.8 | | | 65.5 | | | 5.7 | | | 71.1 | Depreciation, amortization and depletion | | | 225.0 | | | 41.4 | | | 165.6 | | | 431.9 | | | 19.8 | | | 451.7 | Exploration | | | 2.2 | | | 6.6 | | | 8.6 | | | 17.5 | | | 8.2 | | | 25.7 | Operating income | | $ | 3,038.2 | | $ | 228.8 | | $ | 1,859.6 | | $ | 5,126.7 | | $ | (23.1) | | | 5,103.6 | Less: | | | | | | | | | | | | | | | | | | | Interest, net | | | | | | | | | | | | | | | | | | (73.6) | Other income (expense) | | | | | | | | | | | | | | | | | | 13.6 | Income before income taxes | | | | | | | | | | | | | | | | | $ | 5,043.5 | Capital investment | | $ | 307.9 | | $ | 70.5 | | $ | 482.6 | | $ | 861.0 | | $ | 3.7 | | $ | 864.7 | Property and mine development, net | | $ | 5,138.0 | | $ | 831.2 | | $ | 4,218.4 | | $ | 10,187.7 | | $ | 474.3 | | $ | 10,662.0 | Total assets | | $ | 9,287.6 | | $ | 1,606.7 | | $ | 7,198.4 | | $ | 18,092.7 | | $ | 6,035.1 | | $ | 24,127.7 |
| | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | | (in millions) | | | | | Mexican | | | | | | | | Corporate, other | | | | | | Mexican | | IMMSA | | Peruvian | | Segment | | and | | | | | Open-pit | | Unit | | Operations | | Total | | eliminations | | Consolidated | Net sales to external customers | | $ | 1,754.8 | | $ | 118.0 | | $ | 1,178.2 | | $ | 3,051.0 | | $ | — | | $ | 3,051.0 | Intersegment sales | | | — | | | 61.3 | | | — | | | 61.3 | | | (61.3) | | | (0.0) | Cost of sales (exclusive of depreciation, amortization and depletion) | | | 650.7 | | | 134.1 | | | 500.9 | | | 1,285.7 | | | (74.0) | | | 1,211.7 | Selling, general and administrative | | | 17.2 | | | 3.0 | | | 9.7 | | | 29.9 | | | 2.6 | | | 32.5 | Depreciation, amortization and depletion | | | 96.5 | | | 20.8 | | | 76.1 | | | 193.4 | | | 12.8 | | | 206.2 | Exploration | | | 1.5 | | | 3.6 | | | 8.4 | | | 13.5 | | | 0.1 | | | 13.7 | Operating income | | $ | 988.9 | | $ | 17.8 | | $ | 583.1 | | $ | 1,589.8 | | $ | (2.8) | | | 1,587.0 | Less: | | | | | | | | | | | | | | | | | | | Interest, net | | | | | | | | | | | | | | | | | | (40.8) | Other income (expense) | | | | | | | | | | | | | | | | | | (2.3) | Income before income taxes | | | | | | | | | | | | | | | | | $ | 1,543.9 | Capital investment | | $ | 148.6 | | $ | 23.9 | | $ | 61.9 | | $ | 234.4 | | $ | 1.2 | | $ | 235.7 | Property and mine development, net | | $ | 4,899.5 | | $ | 780.5 | | $ | 3,790.3 | | $ | 9,470.3 | | $ | 444.6 | | $ | 9,915.0 | Total assets | | $ | 9,072.7 | | $ | 1,244.7 | | $ | 5,260.0 | | $ | 15,577.4 | | $ | 3,977.3 | | $ | 19,554.7 |
| | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | | (in millions) | | | | | Mexican | | | | | | | | Corporate, other | | | | | | Mexican | | IMMSA | | Peruvian | | Segment | | and | | | | | Open-pit | | Unit | | Operations | | Total | | eliminations | | Consolidated | Net sales to external customers | | $ | 3,504.2 | | $ | 224.5 | | $ | 2,444.2 | | $ | 6,172.9 | | $ | — | | $ | 6,172.9 | Intersegment sales | | | — | | | 110.2 | | | — | | | 110.2 | | | (110.2) | | | (0.0) | Cost of sales (exclusive of depreciation, amortization and depletion) | | | 1,318.7 | | | 246.1 | | | 1,098.0 | | | 2,662.8 | | | (132.0) | | | 2,530.9 | Selling, general and administrative | | | 34.1 | | | 5.8 | | | 18.7 | | | 58.5 | | | 5.6 | | | 64.1 | Depreciation, amortization and depletion | | | 194.2 | | | 40.6 | | | 170.7 | | | 405.4 | | | 24.5 | | | 430.0 | Exploration | | | 2.7 | | | 6.1 | | | 12.2 | | | 21.0 | | | 4.4 | | | 25.4 | Operating income | | $ | 1,954.4 | | $ | 36.2 | | $ | 1,144.6 | | $ | 3,135.3 | | $ | (12.8) | | | 3,122.5 | Less: | | | | | | | | | | | | | | | | | | | Interest, net | | | | | | | | | | | | | | | | | | (84.1) | Other income (expense) | | | | | | | | | | | | | | | | | | (16.0) | Income before income taxes | | | | | | | | | | | | | | | | | $ | 3,022.4 | Capital investment | | $ | 283.2 | | $ | 45.3 | | $ | 222.1 | | $ | 550.6 | | $ | 2.9 | | $ | 553.5 | Property and mine development, net | | $ | 4,899.5 | | $ | 780.5 | | $ | 3,790.3 | | $ | 9,470.3 | | $ | 444.6 | | $ | 9,915.0 | Total assets | | $ | 9,072.7 | | $ | 1,244.7 | | $ | 5,260.0 | | $ | 15,577.4 | | $ | 3,977.3 | | $ | 19,554.7 |
|