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Contingencies and Commitments - Litigation (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12084 Months Ended
Feb. 28, 2025
Mar. 31, 2025
Dec. 31, 2025
Mar. 31, 3033
Asbestos And Talc Claims | Forecast        
Loss Contingencies [Line Items]        
Litigation Settlement, Term       7 years
Asbestos And Talc Claims | Johnson And Johnson        
Loss Contingencies [Line Items]        
Litigation Settlement, Amount Awarded to Other Party $ 505.0      
Asbestos And Talc Claims | Cyprus Mines        
Loss Contingencies [Line Items]        
Proceeds from Legal Settlements   $ 202.0    
Asbestos And Talc Claims | Cyprus Mines | Forecast        
Loss Contingencies [Line Items]        
Proceeds from Legal Settlements     $ 51.0  
Asbestos And Talc Claims | Cyprus Amax Minerals Company        
Loss Contingencies [Line Items]        
Loss Contingency Accrual   195.0    
Pending Litigation | Asbestos And Talc Claims        
Loss Contingencies [Line Items]        
Loss Contingency Accrual   448.0    
Pending Litigation | Future Talc-Related Claims        
Loss Contingencies [Line Items]        
Loss Contingency Accrual   $ 253.0