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Commitments and Contingencies - Insurance (Details) - USD ($)
 3 Months Ended 26 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Dec. 31, 2024
Loss Contingencies [Line Items]        
Percentage of potential losses covered by insurance on legal liabilities for bodily injury and property damage to third parties 83.00%   83.00%  
Policy insurance coverage for bodily injury and property damage to third parties, minimum $ 75,000,000   $ 75,000,000  
Self-insured for bodily injury and property damage to third parties coverage amount, maximum 734,000,000   734,000,000  
Self Insured For Bodily Injury And Property Damage To Third Parties, Pollution Releases Above 800,000,000   800,000,000  
Self Insured For Bodily Injury And Property Damage To Third Parties, Pollution Releases , Additional Liability $ 43,000,000   $ 43,000,000  
Percentage of potential losses covered by insurance on damage to property owned or in control 82.00%   82.00%  
Policy insurance coverage for potential losses on damage to property owned or in control, minimum $ 75,000,000   $ 75,000,000  
Policy insurance coverage for potential losses on damage to property owned or in control, maximum 275,000,000   275,000,000  
Eastern Ohio Incident        
Loss Contingencies [Line Items]        
Actual insurance coverage for bodily injury and property damage to third parties, minimum 75,000,000   75,000,000  
Actual insurance coverage for bodily injury and property damage to third parties, maximum 800,000,000   800,000,000  
Actual insurance coverage for bodily injury and property damage to third parties, pollution releases, maximum $ 1,100,000,000   $ 1,100,000,000  
Percentage of actual losses covered by insurance on damage to property owned or in control 82.00%   82.00%  
Actual insurance coverage for potential losses on damage to property owned or in control, minimum $ 75,000,000   $ 75,000,000  
Actual insurance coverage for potential losses on damage to property owned or in control, maximum 275,000,000   275,000,000  
Insurance recoveries 224,000,000 $ 108,000,000 975,000,000  
Insurance recoveries receivable $ 120,000,000   $ 120,000,000 $ 18,000,000