v3.26.1
Properties
 6 Months Ended
Jun. 30, 2026
Property, Plant, and Equipment [Abstract]  
Properties 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
As of June 30, 2026		CostAccumulated
depreciation		Net book
value		Estimated
useful life
Land$5,493  N/A $5,493  N/A
Road:
Rail and other track material19,905 8,089 11,816 43
Ties12,998 4,405 8,593 34
Ballast6,729 2,375 4,354 34
Other roadway [a]24,879 6,288 18,591 47
Total road64,511 21,157 43,354  N/A
Equipment:
Locomotives10,127 3,817 6,310 17
Freight cars3,091 1,155 1,936 22
Work equipment and other 1,362 572 790 17
Total equipment14,580 5,544 9,036  N/A
Technology and other1,461 724 737 12
Construction in progress1,579 N/A1,579  N/A
Total$87,624 $27,425 $60,199  N/A

Millions, except estimated useful life
As of December 31, 2025		CostAccumulated
depreciation		Net book
value		Estimated
useful life
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 N/A1,413 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.