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v3.22.4

Commitments and Contingencies (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2022 USD ($) mi | Dec. 31, 2022 USD ($) location laborUnion | Dec. 31, 2021 USD ($) location
Other Commitments [Line Items] |  |  |
Environmental Loss Contingency, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag |  | Consolidated Balance Sheets |
Environmental liability |  | $ 66,000,000 | $ 49,000,000
Current environmental liability |  | $ 15,000,000 | $ 15,000,000
Known cleanup and remediation locations and projects | location |  | 85 | 88
Number of sites - representative sample | location |  | 22 |
Liability associated with those sites |  | $ 55,000,000 |
Environmental locations representative sample liability payout period, in years |  | 5 years |
Responsible locations with another party | location |  | 8 |
Employees covered by collective bargaining agreements |  | 80.00% |
Number of labor unions | laborUnion |  | 12 |
Self-insured injury/damage to third parties - and above, per occurrence |  | $ 75,000,000 |
Self-insured injury/damage to third party - up to |  | 800,000,000 |
Self-insured for bodily injury and property damage to third parties above, for specific perils |  | $ 1,100,000,000 |
Self-insured, percentage of potential losses covered |  | 82.00% |
Self-insured NS owned property - and above, per occurrence |  | $ 75,000,000 |
Self-insured NS owned property - up to |  | 275,000,000 |
Purchase commitments |  | 1,700,000,000 |
November 2022 Railway Purchase |  |  |
Other Commitments [Line Items] |  |  |
Number of miles railway line purchased | mi | 337 |  |
Total purchase price of asset purchase | $ 1,600,000,000 |  |
Compensation and Benefits |  |  |
Other Commitments [Line Items] |  |  |
Railway Labor Agreements, additional expenses of pay increases and other benefits |  | 54,000,000 |
Purchased Services and Rents |  |  |
Other Commitments [Line Items] |  |  |
Railway Labor Agreements, additional expenses of pay increases and other benefits |  | $ 2,000,000 |

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