Note 9 - Properties

3 Months Ended

Mar. 31, 2023

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

9. 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, 2023	Cost		Depreciation		Value		Useful Life
Land	$	5,353		N/A	$	5,353		N/A
Road:
Rail and other track material		18,532		7,157		11,375		42
Ties		11,764		3,752		8,012		34
Ballast		6,254		1,979		4,275		34
Other roadway [a]		22,570		5,069		17,501		47
Total road		59,120		17,957		41,163		N/A
Equipment:
Locomotives		9,221		3,684		5,537		18
Freight cars		2,621		914		1,707		23
Work equipment and other		1,278		490		788		17
Total equipment		13,120		5,088		8,032		N/A
Technology and other		1,274		522		752		12
Construction in progress		974		-		974		N/A
Total	$	79,841	$	23,567	$	56,274		N/A

Millions, Except Estimated Useful Life			Accumulated		Net Book		Estimated
As of December 31, 2022	Cost		Depreciation		Value		Useful Life
Land	$	5,344	$	N/A	$	5,344		N/A
Road:
Rail and other track material		18,419		7,096		11,323		43
Ties		11,676		3,699		7,977		34
Ballast		6,222		1,950		4,272		34
Other roadway [a]		22,411		4,970		17,441		47
Total road		58,728		17,715		41,013		N/A
Equipment:
Locomotives		9,166		3,606		5,560		18
Freight cars		2,562		898		1,664		23
Work equipment and other		1,253		473		780		17
Total equipment		12,981		4,977		8,004		N/A
Technology and other		1,254		525		729		12
Construction in progress		948		-		948		N/A
Total	$	79,255	$	23,217	$	56,038		N/A

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