XML 92 R72.htm IDEA: XBRL DOCUMENT 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%