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Commitments and Contingencies (Details) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 22, 2023 school_District | Jun. 30, 2023 USD ($) | Nov. 30, 2022 mi | Dec. 31, 2023 USD ($) location mi | Dec. 31, 2022 USD ($) location | Dec. 31, 2021 USD ($) | Feb. 03, 2023 railcar
Other Commitments [Line Items] |  |  |  |  |  |  |
Eastern Ohio incident |  |  |  | $ 1,116,000,000 | $ 0 | $ 0 |
Environmental Remediation Expense, before Recovery, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  | Eastern Ohio incident |  |  |
Environmental loss contingency, statement of financial position, extensible enumeration, not disclosed flag |  |  |  | Consolidated Balance Sheets |  |  |
Number of locations with one or more subsidiaries in conjunction with other parties identified as potentially responsible parties | location |  |  |  | 8 |  |  |
Employees covered by collective bargaining agreements, percentage |  |  |  | 80.00% |  |  |
Percentage of potential losses covered by insurance on legal liabilities for bodily injury and property damage to third parties |  |  |  | 93.00% |  |  |
Self-insured for bodily injury and property damage to third parties coverage amount, above |  |  |  | $ 75,000,000 |  |  |
Self-insured for bodily injury and property damage to third parties coverage amount, up to |  |  |  | $ 734,000,000 |  |  |
Percentage of potential losses covered by insurance on damage to property owned or in control |  |  |  | 82.00% |  |  |
Self-insured coverage for potential losses on damage to property owned, above |  |  |  | $ 75,000,000 |  |  |
Self-insured coverage for potential losses on damage to property owned, up to |  |  |  | 275,000,000 |  |  |
Purchase commitments |  |  |  | 1,400,000,000 |  |  |
November 2022 Railway Purchase |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |
Number of miles railway line purchased | mi |  |  | 337 |  |  |  |
Asset acquisition, consideration transferred, adjustment |  | $ 500,000 |  |  |  |  |
Personal property transaction amount |  | $ 1,700,000,000 |  |  |  |  |
Eastern Ohio Incident |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |
Environmental remediation expense |  |  |  | 836,000,000 |  |  |
Payments for environmental liabilities |  |  |  | 517,000,000 |  |  |
Number of school districts voluntarily dismissed actions | school_District | 3 |  |  |  |  |  |
Number of school districts as plaintiffs | school_District | 6 |  |  |  |  |  |
Other Environmental Claims |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |
Environmental matters liabilities |  |  |  | 60,000,000 | 66,000,000 |  |
Current environmental liability |  |  |  | $ 15,000,000 | $ 15,000,000 |  |
Known cleanup and remediation locations and projects | location |  |  |  | 81 | 85 |  |
Number of sites - representative sample | location |  |  |  | 21 |  |  |
Liability associated with those sites |  |  |  | $ 48,000,000 |  |  |
Environmental locations representative sample liability payout period, in years |  |  |  | 5 years |  |  |
Eastern Ohio Incident |  |  |  |  |  |  |
Other Commitments [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 |  |  |  | $ 1,100,000,000 |  |  |
Insurance recoveries received |  |  |  | 101,000,000 |  |  |
Deferred tax asset, expenses deductible for tax purposed in future periods or offset with insurance recoveries |  |  |  | 249,000,000 |  |  |
Cash expenditures attributable to the Incident |  |  |  | 652,000,000 |  |  |
Accrual for loss contingencies associated with environmental matters and legal proceedings |  |  |  | $ 464,000,000 |  |  |
Non-environmental legal actions, mile radius of class area | mi |  |  |  | 30 |  |  |
Loss contingency recognized |  |  |  | $ 116,000,000 |  |  |
Loss contingency payments |  |  |  | 34,000,000 |  |  |
Incident-related expenses |  |  |  | $ 265,000,000 |  |  |

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