v3.26.1
Commitments and Contingencies - Narrative (Details)
$ in Millions
1 Months Ended
Mar. 09, 2026
individual
Oct. 10, 2024
motion
May 23, 2024
USD ($)
Apr. 26, 2024
USD ($)
Aug. 22, 2023
school_district
Mar. 31, 2026
USD ($)
complaint
Dec. 31, 2025
USD ($)
Loss Contingencies [Line Items]              
Settlement payment       $ 315   $ 285  
Unrecorded unconditional purchase obligation           $ 300  
Minimum              
Loss Contingencies [Line Items]              
Consent decree period (in years)   5 years          
Maximum              
Loss Contingencies [Line Items]              
Consent decree period (in years)   20 years          
Civil Penalty | Eastern Ohio Incident | Pending Litigation              
Loss Contingencies [Line Items]              
Litigation settlement, amount agreed and awarded to other party     $ 15        
Oversight Costs | Eastern Ohio Incident | Pending Litigation              
Loss Contingencies [Line Items]              
Litigation settlement, amount agreed and awarded to other party     $ 57        
Eastern Ohio Incident              
Loss Contingencies [Line Items]              
Litigation settlement, amount agreed and awarded to other party       $ 600      
Number of school districts as plaintiffs | school_district         6    
Loss contingency, number of pending claims | complaint           6  
Estimated litigation liability           $ 189 $ 474
Number of motions | motion   6          
Number of individuals | individual 2            
Eastern Ohio Incident | Environmental              
Loss Contingencies [Line Items]              
Loss contingency accrual           $ 186 $ 191