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Commitments and Contingencies - Eastern Ohio Incident (Details) $ in Millions |  |  |  | 12 Months Ended | 29 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 23, 2024 USD ($) | Apr. 26, 2024 USD ($) | Aug. 22, 2023 school_district | Dec. 31, 2024 USD ($) | Jun. 30, 2025 USD ($) complaint mi | Jun. 25, 2024 safety_recommendation
Loss Contingencies [Line Items] |  |  |  |  |  |
Settlement payment |  |  |  | $ 315 |  |
Eastern Ohio Incident | Pending Litigation | Minimum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Consent Decree provisions enforcement period | 5 years |  |  |  |  |
Eastern Ohio Incident | Pending Litigation | Maximum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Consent Decree provisions enforcement period | 20 years |  |  |  |  |
Eastern Ohio Incident | Pending Litigation | Oversight Costs |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement, amount agreed and awarded to other party | $ 57 |  |  |  |  |
Eastern Ohio Incident | Pending Litigation | Civil Penalty |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement, amount agreed and awarded to other party | $ 15 |  |  |  |  |
Eastern Ohio Incident |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Eastern Ohio incident |  |  |  |  | $ 1,200 |
Unusual or infrequent item, insurance and other proceeds |  |  |  |  | 1,100 |
Deferred tax asset, expenses deductible for tax purposed in future periods or offset with insurance recoveries |  |  |  | 211 | $ 122 |
Litigation settlement, amount agreed and awarded to other party |  | $ 600 |  |  |  |
Litigation settlement, non-environmental legal actions, mile radius of all class action claims | mi |  |  |  |  | 20 |
Litigation settlement, non-environmental legal actions, mile radius of personal injury claims | mi |  |  |  |  | 10 |
Number of school districts as plaintiffs | school_district |  |  | 6 |  |  |
Estimated litigation liability |  |  |  | $ 369 | $ 483 |
Loss contingency, number of pending claims | complaint |  |  |  |  | 6 |
Eastern Ohio Incident | NTSB |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of safety recommendations issued | safety_recommendation |  |  |  |  |  | 30
Eastern Ohio Incident | NTSB | Norfolk Southern |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of safety recommendations issued | safety_recommendation |  |  |  |  |  | 4

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