XML 27 R18.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 9 - Properties | 3 Months Ended
--- | ---
Mar. 31, 2023
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | 9. Properties The following tables list the major categories of property and equipment, as well as the weighted-average estimated useful life for each category (in years):
Millions, Except Estimated Useful Life |  |  |  |  |  | Accumulated |  |  | Net Book |  |  | Estimated |
As of March 31, 2023 |  | Cost |  |  | Depreciation |  |  | Value |  |  | Useful Life |
Land |  | $ | 5,353 |  |  |  | N/A |  |  | $ | 5,353 |  |  |  | N/A |
Road: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rail and other track material |  |  | 18,532 |  |  |  | 7,157 |  |  |  | 11,375 |  |  |  | 42 |
Ties |  |  | 11,764 |  |  |  | 3,752 |  |  |  | 8,012 |  |  |  | 34 |
Ballast |  |  | 6,254 |  |  |  | 1,979 |  |  |  | 4,275 |  |  |  | 34 |
Other roadway [a] |  |  | 22,570 |  |  |  | 5,069 |  |  |  | 17,501 |  |  |  | 47 |
Total road |  |  | 59,120 |  |  |  | 17,957 |  |  |  | 41,163 |  |  |  | N/A |
Equipment: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Locomotives |  |  | 9,221 |  |  |  | 3,684 |  |  |  | 5,537 |  |  |  | 18 |
Freight cars |  |  | 2,621 |  |  |  | 914 |  |  |  | 1,707 |  |  |  | 23 |
Work equipment and other |  |  | 1,278 |  |  |  | 490 |  |  |  | 788 |  |  |  | 17 |
Total equipment |  |  | 13,120 |  |  |  | 5,088 |  |  |  | 8,032 |  |  |  | N/A |
Technology and other |  |  | 1,274 |  |  |  | 522 |  |  |  | 752 |  |  |  | 12 |
Construction in progress |  |  | 974 |  |  |  | - |  |  |  | 974 |  |  |  | N/A |
Total |  | $ | 79,841 |  |  | $ | 23,567 |  |  | $ | 56,274 |  |  |  | N/A |
Millions, Except Estimated Useful Life |  |  |  |  |  | Accumulated |  |  | Net Book |  |  | Estimated |
As of December 31, 2022 |  | Cost |  |  | Depreciation |  |  | Value |  |  | Useful Life |
Land |  | $ | 5,344 |  |  | $ | N/A |  |  | $ | 5,344 |  |  |  | N/A |
Road: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rail and other track material |  |  | 18,419 |  |  |  | 7,096 |  |  |  | 11,323 |  |  |  | 43 |
Ties |  |  | 11,676 |  |  |  | 3,699 |  |  |  | 7,977 |  |  |  | 34 |
Ballast |  |  | 6,222 |  |  |  | 1,950 |  |  |  | 4,272 |  |  |  | 34 |
Other roadway [a] |  |  | 22,411 |  |  |  | 4,970 |  |  |  | 17,441 |  |  |  | 47 |
Total road |  |  | 58,728 |  |  |  | 17,715 |  |  |  | 41,013 |  |  |  | N/A |
Equipment: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Locomotives |  |  | 9,166 |  |  |  | 3,606 |  |  |  | 5,560 |  |  |  | 18 |
Freight cars |  |  | 2,562 |  |  |  | 898 |  |  |  | 1,664 |  |  |  | 23 |
Work equipment and other |  |  | 1,253 |  |  |  | 473 |  |  |  | 780 |  |  |  | 17 |
Total equipment |  |  | 12,981 |  |  |  | 4,977 |  |  |  | 8,004 |  |  |  | N/A |
Technology and other |  |  | 1,254 |  |  |  | 525 |  |  |  | 729 |  |  |  | 12 |
Construction in progress |  |  | 948 |  |  |  | - |  |  |  | 948 |  |  |  | N/A |
Total |  | $ | 79,255 |  |  | $ | 23,217 |  |  | $ | 56,038 |  |  |  | N/A |
[a] | Other roadway includes grading, bridges and tunnels, signals, buildings, and other road assets.

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

X
- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration