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v3.23.3

Commitments and Contingencies (Details) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 28, 2023 USD ($) | Sep. 30, 2023 USD ($) location schoolDistrict mi | Aug. 21, 2023 schoolDistrict | Nov. 30, 2022 mi | Sep. 30, 2023 USD ($) location mi | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) location mi | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) location | Feb. 03, 2023 railcar
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Eastern Ohio incident expense |  |  |  |  | $ 163,000,000 | $ 0 | $ 966,000,000 | $ 0 |  |
Environmental loss contingency, statement of financial position, extensible enumeration, not disclosed flag |  |  |  |  |  |  | Consolidated Balance Sheets |  | Consolidated Balance Sheets |
Number of locations with one or more subsidiaries in conjunction with other parties identified as potentially responsible parties | location |  | 8 |  |  | 8 |  | 8 |  |  |
Employees covered by collective bargaining agreements, percentage |  |  |  |  |  |  | 80.00% |  |  |
Self-insured injury/damage to third parties - and above, per occurrence |  | $ 75,000,000 |  |  | $ 75,000,000 |  | $ 75,000,000 |  |  |
Self-insured injury/damage to third party - up to |  | 800,000,000 |  |  | 800,000,000 |  | 800,000,000 |  |  |
Self-insured injury/damage to third parties - and above, per occurrence for specific pollution releases |  | $ 1,100,000,000 |  |  | $ 1,100,000,000 |  | $ 1,100,000,000 |  |  |
Percentage of potential losses covered |  | 82.00% |  |  | 82.00% |  | 82.00% |  |  |
Self-insured NS owned property - and above, per occurrence |  | $ 75,000,000 |  |  | $ 75,000,000 |  | $ 75,000,000 |  |  |
Self-insured NS owned property - up to |  | 275,000,000 |  |  | 275,000,000 |  | 275,000,000 |  |  |
November 2022 Railway Purchase |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of miles railway line purchased | mi |  |  |  | 337 |  |  |  |  |  |
Asset acquisition, consideration transferred, adjustment | $ 500,000 |  |  |  |  |  |  |  |  |
Asset acquisition, period after all conditions satisfied for closing | 5 days |  |  |  |  |  |  |  |  |
November 2022 Railway Purchase | Minimum |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Personal property transaction amount | $ 1,600,000,000 |  |  |  |  |  |  |  |  |
November 2022 Railway Purchase | Maximum |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Personal property transaction amount | $ 1,700,000,000 |  |  |  |  |  |  |  |  |
Eastern Ohio Incident |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Environmental remediation expense |  |  |  |  | 118,000,000 |  | 699,000,000 |  |  |
Payments for environmental liabilities |  |  |  |  |  |  | 372,000,000 |  |  |
Other Environmental Claims |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Environmental matters liabilities |  | 59,000,000 |  |  | 59,000,000 |  | 59,000,000 |  | $ 66,000,000 |
Current environmental liability |  | $ 15,000,000 |  |  | $ 15,000,000 |  | $ 15,000,000 |  | $ 15,000,000 |
Known cleanup and remediation locations and projects | location |  | 81 |  |  | 81 |  | 81 |  | 85 |
Number of sites - representative sample | location |  | 20 |  |  | 20 |  | 20 |  |  |
Liability associated with those sites |  | $ 47,000,000 |  |  | $ 47,000,000 |  | $ 47,000,000 |  |  |
Environmental locations representative sample liability payout period, in years |  |  |  |  |  |  | 5 years |  |  |
Eastern Ohio Incident |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of railcars derailed | railcar |  |  |  |  |  |  |  |  |  | 38
Number of non-Company-owned tank cars contained hazardous materials | railcar |  |  |  |  |  |  |  |  |  | 11
Number of tank cars with risk of catastrophic explosion | railcar |  |  |  |  |  |  |  |  |  | 5
Eastern Ohio incident expense |  |  |  |  | 163,000,000 |  | $ 966,000,000 |  |  |
Insurance receivable |  | 25,000,000 |  |  | 25,000,000 |  | 25,000,000 |  |  |
Cash expenditures attributable to the Incident |  |  |  |  |  |  | 511,000,000 |  |  |
Environmental matters liabilities |  | $ 455,000,000 |  |  | $ 455,000,000 |  | $ 455,000,000 |  |  |
Non-environmental legal actions, mile radius of class area | mi |  | 30 |  |  | 30 |  | 30 |  |  |
Non-environmental legal actions, number of school districts as plaintiffs | schoolDistrict |  | 4 | 3 |  |  |  |  |  |  |
Loss contingency recognized |  |  |  |  |  |  | $ 105,000,000 |  |  |
Loss contingency payments |  |  |  |  |  |  | 30,000,000 |  |  |
Incident-related expenses |  |  |  |  | $ 70,000,000 |  | $ 187,000,000 |  |  |

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