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v3.25.4

Income Taxes - Reconciliation between the statutory U.S. federal income tax rate and the Company's effective income tax rate (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Statutory rate | $ 50.7 |  |
State and local income taxes, net of federal income tax effect | 3.0 |  |
Other nondeductible | 2.7 |  |
AMP tax credits | (14.2) |  |
Statutory depletion | (4.9) |  |
Total provision for income taxes | $ 32.9 | $ 36.3 | $ 36.7
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
Statutory rate | 21.00% | 21.00% | 21.00%
State and local income taxes, net of federal income tax effect | 1.20% | 7.50% | 2.30%
AMP tax credits | (5.90%) | (8.20%) | (3.50%)
Statutory depletion | (2.00%) | (3.20%) | (2.10%)
Changes in valuation allowances and reserves |  | (1.10%) | 1.80%
Prior year true-ups |  | 0.40% | (0.50%)
Other nondeductible | 1.00% |  |
Foreign adjustments |  | 1.50% | 1.80%
Currency adjustments |  | 4.80% | (2.60%)
Compensation related items |  | 0.50% | 0.00%
Divestiture-related non-deductible goodwill |  | 3.30% | 0.00%
Other, net |  | 1.40% | 0.50%
Effective rate | 13.60% | 27.90% | 18.70%
Mexico |  |  |
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Currency adjustments | $ (7.3) |  |
Other nondeductible | 3.3 |  |
Other, net | $ (0.6) |  |
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
Other nondeductible | 1.40% |  |
Currency adjustments | (3.00%) |  |
Other, net | (0.20%) |  |
Foreign, Other |  |  |
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Other, net | $ 0.2 |  |
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
Other, net | 0.10% |  |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.1.Q1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 + Details
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