XML 53 R30.htm IDEA: XBRL DOCUMENT
v3.22.4

Note 1 - Nature of Operations (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
Millions |  | 2022 |  |  | 2021 |  |  | 2020 |
Bulk |  | $ | 7,537 |  |  | $ | 6,656 |  |  | $ | 5,960 |
Industrial |  |  | 8,205 |  |  |  | 7,323 |  |  |  | 6,622 |
Premium |  |  | 7,417 |  |  |  | 6,265 |  |  |  | 5,669 |
Total freight revenues |  | $ | 23,159 |  |  | $ | 20,244 |  |  | $ | 18,251 |
Other subsidiary revenues |  |  | 884 |  |  |  | 741 |  |  |  | 743 |
Accessorial revenues |  |  | 779 |  |  |  | 752 |  |  |  | 473 |
Other |  |  | 53 |  |  |  | 67 |  |  |  | 66 |
Total operating revenues |  | $ | 24,875 |  |  | $ | 21,804 |  |  | $ | 19,533 |

X
- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration