v3.25.4
Properties (Tables)
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment and Weighted Average Estimated Useful Life
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 lifeCostAccumulated
depreciation		Net book
value		Estimated
useful life
As of December 31, 2025
Land$5,471  N/A $5,471 N/A
Road:
Rail and other track material19,747 $7,936 11,811 45
Ties12,779 4,305 8,474 34
Ballast6,646 2,309 4,337 34
Other roadway [a]24,610 6,080 18,530 47
Total road63,782 20,630 43,152 N/A
Equipment:
Locomotives9,926 3,813 6,113 18
Freight cars3,080 1,107 1,973 23
Work equipment and other1,318 540 778 17
Total equipment14,324 5,460 8,864 N/A
Technology and other1,414 669 745 12
Construction in progress1,413 - 1,413 N/A
Total$86,404 $26,759 $59,645 N/A
[a]Other roadway includes grading, bridges and tunnels, signals, buildings, and other road assets.
Millions, except estimated useful lifeCostAccumulated
depreciation		Net book
value		Estimated
useful life
As of December 31, 2024
Land$5,441 N/A $5,441 N/A
Road:
Rail and other track material19,283 $7,642 11,641 46
Ties12,358 4,109 8,249 34
Ballast6,495 2,182 4,313 34
Other roadway [a]23,913 5,681 18,232 47
Total road62,049 19,614 42,435 N/A
Equipment:
Locomotives9,517 3,724 5,793 18
Freight cars3,011 1,037 1,974 22
Work equipment and other [b]1,222 482 740 17
Total equipment13,750 5,243 8,507 N/A
Technology and other1,431 640 791 12
Construction in progress1,169 - 1,169 N/A
Total$83,840 $25,497 $58,343 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 to the asset class, 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 Consolidated Statements of Income.