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Current Liabilities
12 Months Ended
Dec. 31, 2021
Payables and Accruals [Abstract]  
Current Liabilities Current Liabilities 
 December 31,
 20212020
 ($ in millions)
Accounts payable:  
Accounts and wages payable$850 $552 
Casualty and other claims (Note 17)166 182 
Vacation liability119 121 
Due to Conrail (Note 6)112 56 
Other104 105 
Total$1,351 $1,016 
Other current liabilities:  
Interest payable$150 $141 
Current operating lease liability (Note 10)82 89 
Pension benefit obligations (Note 12)20 19 
Other60 53 
Total$312 $302