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Note 3 - Operations and Segmentation | 6 Months Ended
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Jun. 30, 2022
Notes to Financial Statements |
Nature of Operations [Text Block] | 3. Operations and Segmentation 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. 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:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
Millions |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Bulk |  | $ | 1,813 |  |  | $ | 1,648 |  |  | $ | 3,645 |  |  | $ | 3,160 |
Industrial |  |  | 2,091 |  |  |  | 1,859 |  |  |  | 4,012 |  |  |  | 3,515 |
Premium |  |  | 1,938 |  |  |  | 1,625 |  |  |  | 3,625 |  |  |  | 3,106 |
Total freight revenues |  | $ | 5,842 |  |  | $ | 5,132 |  |  | $ | 11,282 |  |  | $ | 9,781 |
Other subsidiary revenues |  |  | 233 |  |  |  | 180 |  |  |  | 438 |  |  |  | 357 |
Accessorial revenues |  |  | 183 |  |  |  | 176 |  |  |  | 384 |  |  |  | 337 |
Other |  |  | 11 |  |  |  | 16 |  |  |  | 25 |  |  |  | 30 |
Total operating revenues |  | $ | 6,269 |  |  | $ | 5,504 |  |  | $ | 12,129 |  |  | $ | 10,505 |
Although our revenues are principally derived from customers domiciled in the U.S., the ultimate points of origin or destination for some products we transport are outside the U.S. Each of our commodity groups includes revenues from shipments to and from Mexico. Included in the above table are revenues from our Mexico business, which amounted to $681 million and $618 million, respectively, for the three months ended June 30, 2022 and 2021, and $1.3 billion and $1.2 billion, respectively, for the six months ended June 30, 2022 and 2021.

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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 https://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 https://asc.fasb.org/topic&trid=2134479 + Details
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