Note 10 - Properties

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

10. 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 March 31, 2024	Cost		Depreciation		Value		Useful Life
Land	$	5,429	$	N/A	$	5,429		N/A
Road:
Rail and other track material		18,952		7,420		11,532		46
Ties		12,064		3,958		8,106		34
Ballast		6,373		2,095		4,278		34
Other roadway [a]		23,290		5,450		17,840		47
Total road		60,679		18,923		41,756		N/A
Equipment:
Locomotives		9,481		3,642		5,839		18
Freight cars		2,789		983		1,806		23
Work equipment and other		1,335		545		790		17
Total equipment		13,605		5,170		8,435		N/A
Technology and other		1,394		588		806		12
Construction in progress		1,164		-		1,164		N/A
Total	$	82,271	$	24,681	$	57,590		N/A

[a] Other roadway includes grading, bridges and tunnels, signals, buildings, and other road assets.

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.