XML 58 R46.htm IDEA: XBRL DOCUMENT v3.22.2.2
Commitments and Contingencies (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
location
Sep. 30, 2022
USD ($)
location
Dec. 31, 2021
USD ($)
location
Commitments and Contingencies Disclosure [Abstract]      
Environmental liability $ 57,000,000 $ 57,000,000 $ 49,000,000
Current environmental liability $ 15,000,000 $ 15,000,000 $ 15,000,000
Known cleanup and remediation locations and projects | location 86 86 88
Number of sites - representative sample | location 20 20  
Liability associated with those sites $ 46,000,000 $ 46,000,000  
Environmental locations representative sample liability payout period, in years   5 years  
Responsible locations with another party | location 8 8  
Employees covered by collective bargaining agreements, percentage   80.00%  
Other Commitments [Line Items]      
Self-insured injury/damage to third parties - and above, per occurrence $ 75,000,000 $ 75,000,000  
Self-insured injury/damage to third party - up to 800,000,000 800,000,000  
Self-insured injury/damage to third parties - and above, per occurrence for specific perils $ 1,100,000,000 $ 1,100,000,000  
Percentage of potential losses covered 82.00% 82.00%  
Self-insured NS owned property - and above, per occurrence $ 75,000,000 $ 75,000,000  
Self-insured NS owned property - up to 275,000,000 275,000,000  
Purchased Services And Rents      
Other Commitments [Line Items]      
Railway Labor Agreements, additional expenses of pay increases and other benefits 3,000,000 2,000,000  
Compensation And Benefits      
Other Commitments [Line Items]      
Railway Labor Agreements, additional expenses of pay increases and other benefits $ 85,000,000 $ 54,000,000