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Segment Reporting | 9 Months Ended
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Sep. 30, 2025
Segment Reporting [Abstract] |
Segment Reporting | Segment Reporting The Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” which requires additional reportable segment disclosures related to significant segment expenses and information used to assess performance. We adopted the provisions of this standard and updated our segment disclosures herein. We manage our company as one reportable operating segment, railway operations, providing rail transportation to customers. Although we provide and analyze revenues by commodity group, the overall financial and operational performance of the railroad is analyzed as one operating segment due to the nature of our integrated rail network. The chief operating decision maker assesses the performance of the railway operations segment and decides how to allocate resources based on “Net income” that is reported on the Consolidated Statements of Income. The measure of segment assets is reported on the Consolidated Balance Sheets as “Total assets.” Total expenditures for long-lived assets are disclosed as “Property additions” on the Consolidated Statement of Cash Flows. Railway operations segment revenues, expenses, and profit are disclosed below as reviewed and used by the chief operating decision maker. There are no other significant segment items or reconciling items to segment profit.
| Third Quarter |  | First Nine Months |  |
| 2025 |  | 2024 |  | 2025 |  | 2024 |  |  |  |
| ($ in millions)
Railway operating revenues (Note 3) | $ | 3,103 |  |  | $ | 3,051 |  |  | $ | 9,206 |  |  | $ | 9,099 |  |  |  |  |
Railway operating expenses |  |  |  |  |  |  |  |  |  |  |
Compensation and benefits | 738 |  |  | 690 |  |  | 2,169 |  |  | 2,126 |  |  |  |  |
Purchased services | 414 |  |  | 405 |  |  | 1,224 |  |  | 1,244 |  |  |  |  |
Equipment rents | 105 |  |  | 92 |  |  | 313 |  |  | 297 |  |  |  |  |
Fuel | 237 |  |  | 216 |  |  | 700 |  |  | 757 |  |  |  |  |
Depreciation | 348 |  |  | 339 |  |  | 1,040 |  |  | 1,011 |  |  |  |  |
Materials | 104 |  |  | 96 |  |  | 302 |  |  | 286 |  |  |  |  |
Claims | 75 |  |  | 66 |  |  | 200 |  |  | 164 |  |  |  |  |
Other | (32) |  |  | (350) |  |  | 45 |  |  | (250) |  |  |  |  |
Merger-related expenses | 15 |  |  | — |  |  | 15 |  |  | — |  |  |  |  |
Restructuring and other charges | 12 |  |  | 60 |  |  | 22 |  |  | 156 |  |  |  |  |
Eastern Ohio incident | (11) |  |  | (159) |  |  | (243) |  |  | 368 |  |  |  |  |
Total railway operating expenses | 2,005 |  |  | 1,455 |  |  | 5,787 |  |  | 6,159 |  |  |  |  |
Income from railway operations | 1,098 |  |  | 1,596 |  |  | 3,419 |  |  | 2,940 |  |  |  |  |
Other income – net | 23 |  |  | 34 |  |  | 78 |  |  | 69 |  |  |  |  |
Interest expense on debt | 197 |  |  | 203 |  |  | 597 |  |  | 608 |  |  |  |  |
Income before income taxes | 924 |  |  | 1,427 |  |  | 2,900 |  |  | 2,401 |  |  |  |  |
Income taxes | 213 |  |  | 328 |  |  | 671 |  |  | 512 |  |  |  |  |
Net income | $ | 711 |  |  | $ | 1,099 |  |  | $ | 2,229 |  |  | $ | 1,889 |  |  |  |  |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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