Note 11 - Properties (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Property, Plant and Equipment [Table Text Block]

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

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