Note 11 - Properties (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Property, Plant and Equipment [Table Text Block]

Millions, Except Estimated Useful Life						Accumulated				Net Book				Estimated
As of December 31, 2021		Cost				Depreciation				Value				Useful Life
Land		$	5,339			$	N/A			$	5,339				N/A
Road:
Rail and other track material			17,980				6,844				11,136				44
Ties			11,364				3,516				7,848				34
Ballast			6,070				1,852				4,218				34
Other roadway [a]			21,593				4,657				16,936				47
Total road			57,007				16,869				40,138				N/A
Equipment:
Locomotives			9,371				3,779				5,592				17
Freight cars			2,227				822				1,405				24
Work equipment and other			1,161				411				750				18
Total equipment			12,759				5,012				7,747				N/A
Technology and other			1,209				523				686				12
Construction in progress			961				-				961				N/A
Total		$	77,275			$	22,404			$	54,871				N/A

Millions, Except Estimated Useful Life						Accumulated				Net Book				Estimated
As of December 31, 2020		Cost				Depreciation				Value				Useful Life
Land		$	5,246			$	N/A			$	5,246				N/A
Road:
Rail and other track material			17,620				6,631				10,989				42
Ties			11,051				3,331				7,720				34
Ballast			5,926				1,753				4,173				34
Other roadway [a]			21,030				4,329				16,701				48
Total road			55,627				16,044				39,583				N/A
Equipment:
Locomotives			9,375				3,555				5,820				17
Freight cars			2,118				789				1,329				25
Work equipment and other			1,107				351				756				18
Total equipment			12,600				4,695				7,905				N/A
Technology and other			1,199				520				679				13
Construction in progress			748				-				748				N/A
Total		$	75,420			$	21,259			$	54,161				N/A