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Commitments and Contingencies (Details)
1 Months Ended 9 Months Ended
Jan. 31, 2024
USD ($)
party
Mar. 24, 2023
defendant
Mar. 02, 2023
mi
Jun. 30, 2018
defendant
Mar. 31, 2016
mi
May 31, 2007
entity
Sep. 30, 2024
USD ($)
mi
Mar. 02, 2022
party
Loss Contingencies [Line Items]                
Casualty and catastrophic property deductible             $ 150,000,000  
Casualty and non catastrophic property deductible             $ 125,000,000  
Environmental                
Loss Contingencies [Line Items]                
Number of miles pertaining to passaic river tidal reach required to be studied by EPA | mi             17  
Number of lower miles under study | mi         8      
Number of upper miles under study | mi     9          
Number of parties liable | party               8
Number of parties participating in modified CD | party 82              
Number of parties | defendant   37   110        
Environmental | Other Defendants                
Loss Contingencies [Line Items]                
Amount awarded to other party $ 150,000,000              
Pending Litigation | Fuel Surcharge Antitrust Litigation                
Loss Contingencies [Line Items]                
Class action lawsuits filed against U.S.-based Class I railroads, excluding CSXT (number of entities) | entity           3    
Minimum | Pending Litigation                
Loss Contingencies [Line Items]                
Possible loss for certain legal proceedings             $ 3,000,000  
Maximum | Pending Litigation                
Loss Contingencies [Line Items]                
Possible loss for certain legal proceedings             67,000,000  
Total Casualty                
Loss Contingencies [Line Items]                
Self-insured retention amount, per occurrence (up to)             $ 100,000,000