Note 10 - Properties (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Property, Plant and Equipment [Table Text Block]

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

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