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Nature of Operations | 12 Months Ended
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Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Nature of Operations | Nature of Operations Operations and Segmentation – We are a Class I railroad operating in the U.S. Our network includes 32,880 route miles, connecting Pacific Coast and Gulf Coast ports with the Midwest and Eastern U.S. gateways and providing several corridors to key Mexican and Canadian gateways. We own 26,291 miles and operate on the remainder pursuant to trackage rights or leases. We serve the western two-thirds of the country and maintain coordinated schedules with other rail carriers for the handling of freight to and from the Atlantic Coast, the Pacific Coast, the Southeast, the Southwest, Canada, and Mexico. Export and import traffic is moved through Gulf Coast, Pacific Coast, and East Coast ports and across the Mexican and Canadian borders. The Railroad, along with its subsidiaries and rail affiliates, is our one reportable operating segment. Although we provide and analyze revenues by commodity group, we treat the financial results of the Railroad as one segment due to the integrated nature of our rail network. The accounting policies of the Railroad segment are the same as those described in Note 2 Significant Accounting Policies. The Company’s Chief Operating Decision Maker (CODM) is our Chief Executive Officer. The CODM assesses performance for our rail network and decides how to allocate resources based on net income as reported on our Consolidated Statements of Income. The measure of segment assets is reported on our Consolidated Statements of Financial Position as total assets. Our operating revenues are primarily derived from contracts with customers for the transportation of freight from origin to destination. Although our revenues are principally derived from customers domiciled in the U.S., the ultimate points of origination or destination for some products we transport are outside the U.S. Freight revenues from each of our commodity groups, as described in the table below, includes revenues from shipments to and from Mexico, which amounted to $3.0 billion in 2024, $2.8 billion in 2023, and $2.7 billion in 2022. Our significant segment expenses as monitored by the CODM are shown in the table below. This breakout of revenues and expenses is used by the CODM to monitor and assess the financial performance of our rail network by comparing actual results to prior years and plans.
Millions | 2024 | 2023 | 2022
Bulk | $ | 7,207 |  | $ | 7,358 |  | $ | 7,537 |
Industrial | 8,440 |  | 8,238 |  | 8,205 |
Premium | 7,164 |  | 6,975 |  | 7,417 |
Total freight revenues | $ | 22,811 |  | $ | 22,571 |  | $ | 23,159 |
Other subsidiary revenues | 788 |  | 872 |  | 884 |
Accessorial revenues | 554 |  | 584 |  | 779 |
Other | 97 |  | 92 |  | 53 |
Total operating revenues | $ | 24,250 |  | $ | 24,119 |  | $ | 24,875 |
Operating [a] | 6,795 |  | 6,729 |  | 6,212 |
Administrative [a] | 757 |  | 761 |  | 700 |
Locomotive fuel | 2,418 |  | 2,815 |  | 3,321 |
Other segment items [b] | 2,169 |  | 2,414 |  | 2,479 |
Depreciation | 2,398 |  | 2,318 |  | 2,246 |
Other income, net | (350) |  | (491) |  | (426) |
Interest expense | 1,269 |  | 1,340 |  | 1,271 |
Income tax expense | 2,047 |  | 1,854 |  | 2,074 |
Net income | $ | 6,747 |  | $ | 6,379 |  | $ | 6,998 |
[a] Operating and Administrative includes compensation and benefits, purchased services and materials, equipment and other rents, non-locomotive fuel, and other expenses. [b] Other segment items includes car hire and leases, casualty costs, state and local taxes, subsidiary expense, and other overhead expense. Basis of Presentation – The Consolidated Financial Statements are presented in accordance with accounting principles generally accepted in the U.S. (GAAP) as codified in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC). Certain prior period amounts have been reclassified to conform to the current period financial statement presentation.

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- Definition The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 275 -Publisher FASB -URI https://asc.fasb.org/275/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 + Details
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