Property, Plant and Equipment [Table Text Block] |
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 |
|
|