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Note 1 - Nature of Operations | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Nature of Operations [Text Block] | 1. Nature of Operations Operations and Segmentation – We are a Class I railroad operating in the U.S. Our network includes 32,452 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 26,124 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 and Pacific 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 revenue by commodity group, we treat the financial results of the Railroad as one segment due to the integrated nature of our rail network. Our operating revenues are primarily derived from contracts with customers for the transportation of freight from origin to destination. The following table represents a disaggregation of our freight and other revenues:
Millions |  | 2021 |  |  | 2020 |  |  | 2019 |
Bulk |  | $ | 6,656 |  |  | $ | 5,960 |  |  | $ | 6,529 |
Industrial |  |  | 7,323 |  |  |  | 6,622 |  |  |  | 7,472 |
Premium |  |  | 6,265 |  |  |  | 5,669 |  |  |  | 6,242 |
Total freight revenues |  | $ | 20,244 |  |  | $ | 18,251 |  |  | $ | 20,243 |
Other subsidiary revenues |  |  | 741 |  |  |  | 743 |  |  |  | 880 |
Accessorial revenues |  |  | 752 |  |  |  | 473 |  |  |  | 514 |
Other |  |  | 67 |  |  |  | 66 |  |  |  | 71 |
Total operating revenues |  | $ | 21,804 |  |  | $ | 19,533 |  |  | $ | 21,708 |
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. Each of our commodity groups includes revenue from shipments to and from Mexico. Included in the above table are freight revenues from our Mexico business which amounted to $2.4 billion in 2021, $2.1 billion in 2020, and $2.3 billion in 2019. 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).

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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