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Properties (Tables) | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Schedule of Net Properties | Details of the Company’s net properties are as follows:
(Dollars in Millions) |  |  |  | Accumulated |  | Net Book |  | Annual Depreciation |  | Estimated Useful Life |  | Depreciation
December 2023 |  | Cost |  | Depreciation |  | Value |  | Rate |  | (Avg. Years) |  | Method
Road |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Rail and Other Track Material |  | $ | 9,537 |  |  | $ | (1,978) |  |  | $ | 7,559 |  |  | 2.5% |  | 41 |  | Group Life
|  | Ties |  | 7,020 |  |  | (2,131) |  |  | 4,889 |  |  | 3.5% |  | 28 |  | Group Life
|  | Grading |  | 2,796 |  |  | (668) |  |  | 2,128 |  |  | 1.3% |  | 75 |  | Group Life
|  | Ballast |  | 3,424 |  |  | (1,119) |  |  | 2,305 |  |  | 2.6% |  | 38 |  | Group Life
|  | Bridges, Trestles, and Culverts |  | 3,121 |  |  | (525) |  |  | 2,596 |  |  | 1.7% |  | 60 |  | Group Life
|  | Signals and Interlockers |  | 3,376 |  |  | (1,351) |  |  | 2,025 |  |  | 4.1% |  | 24 |  | Group Life
|  | Buildings |  | 1,530 |  |  | (608) |  |  | 922 |  |  | 2.5% |  | 40 |  | Group Life/ Straight Line (a)
|  | Other |  | 5,786 |  |  | (2,546) |  |  | 3,240 |  |  | 4.1% |  | 25 |  | Group Life/ Straight Line (a)
Total Road |  | 36,590 |  |  | (10,926) |  |  | 25,664 |  |  |  |  |  |  |
Equipment |  |  |  |  |  |  |  |  |  |  |  |
|  | Locomotive |  | 4,952 |  |  | (1,981) |  |  | 2,971 |  |  | 3.8% |  | 26 |  | Group Life
|  | Freight Cars |  | 2,300 |  |  | (378) |  |  | 1,922 |  |  | 3.1% |  | 32 |  | Group Life
|  | Work Equipment and Other |  | 3,391 |  |  | (2,100) |  |  | 1,291 |  |  | 8.9% |  | 11 |  | Group Life/ Straight Line (a)
Total Equipment |  | 10,643 |  |  | (4,459) |  |  | 6,184 |  |  |  |  |  |  |
Land |  |  |  | 2,272 |  |  | — |  |  | 2,272 |  |  | N/A |  | N/A |  | N/A
Construction In Progress |  | 815 |  |  | — |  |  | 815 |  |  | N/A |  | N/A |  | N/A
Total Properties |  | $ | 50,320 |  |  | $ | (15,385) |  |  | $ | 34,935 |  |  |  |  |  |  |
(a) For depreciation method, certain asset categories contain intermodal terminals, trucking or technology-related assets, which are depreciated using the straight-line method. NOTE 6. Properties, continued
(Dollars in Millions) |  |  |  | Accumulated |  | Net Book |  | Annual Depreciation |  | Estimated Useful Life |  | Depreciation
December 2022 |  | Cost |  | Depreciation |  | Value |  | Rate |  | (Avg. Years) |  | Method
Road |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Rail and Other Track Material |  | $ | 8,660 |  |  | $ | (1,405) |  |  | $ | 7,255 |  |  | 2.5% |  | 41 |  | Group Life
|  | Ties |  | 6,763 |  |  | (2,010) |  |  | 4,753 |  |  | 3.5% |  | 28 |  | Group Life
|  | Grading |  | 2,741 |  |  | (637) |  |  | 2,104 |  |  | 1.3% |  | 75 |  | Group Life
|  | Ballast |  | 3,383 |  |  | (1,130) |  |  | 2,253 |  |  | 2.6% |  | 38 |  | Group Life
|  | Bridges, Trestles, and Culverts |  | 2,989 |  |  | (454) |  |  | 2,535 |  |  | 1.7% |  | 60 |  | Group Life
|  | Signals and Interlockers |  | 3,299 |  |  | (1,210) |  |  | 2,089 |  |  | 4.1% |  | 24 |  | Group Life
|  | Buildings |  | 1,416 |  |  | (558) |  |  | 858 |  |  | 2.5% |  | 40 |  | Group Life/ Straight Line (a)
|  | Other |  | 5,541 |  |  | (2,323) |  |  | 3,218 |  |  | 4.1% |  | 25 |  | Group Life/ Straight Line (a)
Total Road |  | 34,792 |  |  | (9,727) |  |  | 25,065 |  |  |  |  |  |  |
Equipment |  |  |  |  |  |  |  |  |  |  |  |
|  | Locomotive |  | 4,848 |  |  | (1,856) |  |  | 2,992 |  |  | 3.8% |  | 26 |  | Group Life
|  | Freight Cars |  | 2,316 |  |  | (369) |  |  | 1,947 |  |  | 3.1% |  | 32 |  | Group Life
|  | Work Equipment and Other |  | 3,132 |  |  | (1,911) |  |  | 1,221 |  |  | 8.9% |  | 11 |  | Group Life/ Straight Line (a)
Total Equipment |  | 10,296 |  |  | (4,136) |  |  | 6,160 |  |  |  |  |  |  |
Land |  |  |  | 2,272 |  |  | — |  |  | 2,272 |  |  | N/A |  | N/A |  | N/A
Construction In Progress |  | 745 |  |  | — |  |  | 745 |  |  | N/A |  | N/A |  | N/A
Total Properties |  | $ | 48,105 |  |  | $ | (13,863) |  |  | $ | 34,242 |  |  |  |  |  |  |
(a) For depreciation method, certain asset categories contain intermodal terminals, trucking or technology-related assets, which are depreciated using the straight-line method.
Disclosure of Long-Lived Assets Held-for-sale |
|  | Years Ended
(Dollars in Millions) |  | 2023 | 2022 | 2021
Gains |  | $ | — |  | $ | 144 |  | $ | 349 |
Proceeds |  | — |  | 125 |  | 400

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