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Current Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Related Party Transaction [Line Items]    
Accounts and wages payable $ 712 $ 850
Casualty and other claims (Note 17) 170 166
Vacation liability 136 119
Other 102 104
Total 1,293 1,351
Interest payable 157 150
Current operating lease liability (Note 10) 94 82
Other 70 60
Total 341 312
Pension Benefits    
Related Party Transaction [Line Items]    
Pension benefit obligations (Note 12) 20 20
Conrail    
Related Party Transaction [Line Items]    
Due to Conrail (Note 6) $ 173 $ 112