v3.26.1
Commitments and Contingencies - Additional Information (Details)
 1 Months Ended 2 Months Ended 3 Months Ended
Apr. 14, 2021
USD ($)
Jun. 30, 2018
party
Mar. 03, 2016
USD ($)
Aug. 31, 2025
USD ($)
mine
Sep. 30, 2022
USD ($)
May 04, 2026
defendant
lawsuit
plaintiff
claim
alleged_former_employee
Mar. 31, 2026
USD ($)
site
mine
location
mi
Aug. 27, 2025
employee
claim
Dec. 31, 2025
USD ($)
Jun. 04, 2024
claim
Nov. 30, 2022
facility
site
Oct. 18, 2021
Apr. 11, 2014
mi
Site Contingency                          
Number of sites subject to remediation (sites) | site             19            
Number of sites expected to cost less than 500K (sites) | site             9            
Expected future cost of remediation or investigation (less than)             $ 500,000            
Number of sites subsidiaries formally conducted business but no longer do | site             18            
Environmental loss accrual             $ 41,300,000   $ 42,200,000        
Environmental             $ 7,300,000            
Site contingency, number of operating units | location             2            
Loss accrual             $ 11,800,000            
Lower Passaic River Study Area                          
Site Contingency                          
Portion of site subject to remediation (miles) | mi                         8.3
Number of other potentially responsible parties | party   120                      
Lower Passaic River Study Area | Minimum                          
Site Contingency                          
Site contingency, loss exposure in excess of accrual best estimate     $ 1,380,000,000                    
Upper Nine Miles of the River                          
Site Contingency                          
Site contingency, loss exposure in excess of accrual best estimate $ 441,000,000                        
Lower Eight Miles of River                          
Site Contingency                          
Environmental loss accrual             700,000            
Settlement payment         $ 5,900,000                
Lower Passaic River Study Area, OU4, Recovery Of Costs                          
Site Contingency                          
Site contingency, loss exposure not accrued, best estimate             165,000,000            
Arizona Uranium Mines                          
Site Contingency                          
Environmental loss accrual             $ 11,300,000            
Investigative sites notice from EPA | mine             8            
Number of priority mines | mine       2     2            
Number of non priority mines | mine             6            
Estimate low end       $ 3,600,000     $ 7,600,000            
Percentage of expenses reimbursable by the U.S.                       35.00%  
Future contributions from U.S.             3,500,000            
Arizona Uranium Mines | Minimum                          
Site Contingency                          
Site contingency, loss exposure in excess of accrual best estimate       3,600,000                  
Arizona Uranium Mines | Maximum                          
Site Contingency                          
Site contingency, loss exposure in excess of accrual best estimate       $ 15,900,000                  
Thorofare, New Jersey                          
Site Contingency                          
Number of facilities (facilities) | facility                     2    
Number of sites, active operations (sites) | site                     1    
GGB (ISRA) Investigation and Cleanup                          
Site Contingency                          
Environmental loss accrual             2,800,000            
Water Valley, Mississippi                          
Site Contingency                          
Environmental loss accrual             $ 7,700,000            
Number of pending claims | claim               8   8      
Number of total plaintiffs | employee               150          
Number of sites subject to remediation, addition (sites) | site             5            
Number of sites subject to remediation, remaining (sites) | site             14            
Water Valley, Mississippi | Subsequent Event                          
Site Contingency                          
Number of pending claims | alleged_former_employee           531              
Loss contingency new claims filed number | lawsuit           13              
Loss Contingency, New Claims Filed, Number Not Named As Defendants | lawsuit           11              
Loss Contingency, Number Of Plaintiffs, Not Named As Defendant | plaintiff           427              
Loss Contingency, Number Of Defendants Named In Litigation | defendant           2              
Loss Contingency, Number Of Defendants Named In Litigation, Individual Consultant | defendant           2              
Loss Contingency, Number Of Defendants Named In Litigation, Consulting And Construction Firms | defendant           6              
Loss Contingency, Number Of Claims, Named As Defendant | lawsuit           2              
Loss Contingency, Number of Plaintiffs | plaintiff           104              
Loss Contingency, Number Of Asserted Claims | claim           2              
Pine Bluff                          
Site Contingency                          
Environmental loss accrual             $ 6,900,000            
Related Party | Crucible Steel Corporation                          
Site Contingency                          
Portion of site subject to remediation (miles) | mi             17