Note 11 - Properties (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

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

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