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Note 11 - Properties | 9 Months Ended
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Sep. 30, 2024
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | 11. 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 September 30, 2024 |  | Cost |  |  | Depreciation |  |  | Value |  |  | Useful Life |
Land |  | $ | 5,439 |  |  |  | N/A |  |  | $ | 5,439 |  |  |  | N/A |
Road: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rail and other track material |  |  | 19,180 |  |  |  | 7,569 |  |  |  | 11,611 |  |  |  | 46 |
Ties |  |  | 12,268 |  |  |  | 4,053 |  |  |  | 8,215 |  |  |  | 34 |
Ballast |  |  | 6,457 |  |  |  | 2,148 |  |  |  | 4,309 |  |  |  | 34 |
Other roadway [a] |  |  | 23,697 |  |  |  | 5,601 |  |  |  | 18,096 |  |  |  | 47 |
Total road |  |  | 61,602 |  |  |  | 19,371 |  |  |  | 42,231 |  |  |  | N/A |
Equipment: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Locomotives |  |  | 9,561 |  |  |  | 3,750 |  |  |  | 5,811 |  |  |  | 18 |
Freight cars |  |  | 2,964 |  |  |  | 1,024 |  |  |  | 1,940 |  |  |  | 23 |
Work equipment and other [b] |  |  | 1,191 |  |  |  | 472 |  |  |  | 719 |  |  |  | 17 |
Total equipment |  |  | 13,716 |  |  |  | 5,246 |  |  |  | 8,470 |  |  |  | N/A |
Technology and other |  |  | 1,423 |  |  |  | 616 |  |  |  | 807 |  |  |  | 12 |
Construction in progress |  |  | 1,089 |  |  |  | - |  |  |  | 1,089 |  |  |  | N/A |
Total |  | $ | 83,269 |  |  | $ | 25,233 |  |  | $ | 58,036 |  |  |  | N/A |
Millions, Except Estimated Useful Life |  |  |  |  |  | Accumulated |  |  | Net Book |  |  | Estimated |
As of December 31, 2023 |  | Cost |  |  | Depreciation |  |  | Value |  |  | Useful Life |
Land |  | $ | 5,426 |  |  | $ | N/A |  |  | $ | 5,426 |  |  |  | N/A |
Road: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rail and other track material |  |  | 18,837 |  |  |  | 7,344 |  |  |  | 11,493 |  |  |  | 42 |
Ties |  |  | 11,985 |  |  |  | 3,895 |  |  |  | 8,090 |  |  |  | 34 |
Ballast |  |  | 6,345 |  |  |  | 2,061 |  |  |  | 4,284 |  |  |  | 34 |
Other roadway [a] |  |  | 23,175 |  |  |  | 5,368 |  |  |  | 17,807 |  |  |  | 47 |
Total road |  |  | 60,342 |  |  |  | 18,668 |  |  |  | 41,674 |  |  |  | N/A |
Equipment: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Locomotives |  |  | 9,295 |  |  |  | 3,591 |  |  |  | 5,704 |  |  |  | 18 |
Freight cars |  |  | 2,765 |  |  |  | 956 |  |  |  | 1,809 |  |  |  | 23 |
Work equipment and other |  |  | 1,344 |  |  |  | 546 |  |  |  | 798 |  |  |  | 17 |
Total equipment |  |  | 13,404 |  |  |  | 5,093 |  |  |  | 8,311 |  |  |  | N/A |
Technology and other |  |  | 1,388 |  |  |  | 574 |  |  |  | 814 |  |  |  | 12 |
Construction in progress |  |  | 1,173 |  |  |  | - |  |  |  | 1,173 |  |  |  | N/A |
Total |  | $ | 81,733 |  |  | $ | 24,335 |  |  | $ | 57,398 |  |  |  | N/A |
[a] | Other roadway includes grading, bridges and tunnels, signals, buildings, and other road assets.
[b] | For retirements of depreciable railroad properties that do not occur in the normal course of business, a gain or loss may be recognized if the retirement meets each of the following three conditions: (a) is unusual, (b) is material in amount, and (c) varies significantly from the retirement profile identified through our depreciation studies. In the second quarter of 2024, we sold a large portion of an intermodal equipment asset class resulting in a $46 million gain recognized in other expense in our Condensed Consolidated Statements of Income.

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