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Properties (Tables)

3 Months Ended

Mar. 31, 2021

Properties [Abstract]

Schedule Of 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, 2021	Cost		Depreciation		Value		Useful Life
Land	$	5,245	$	N/A	$	5,245	N/A
Road:
Rail and other track material		17,693		6,698		10,995	43
Ties		11,121		3,387		7,734	34
Ballast		5,956		1,785		4,171	34
Other roadway [a]		21,058		4,386		16,672	48
Total road		55,828		16,256		39,572	N/A
Equipment:
Locomotives		9,322		3,605		5,717	17
Freight cars		2,157		801		1,356	25
Work equipment and other		1,108		361		747	18
Total equipment		12,587		4,767		7,820	N/A
Technology and other		1,211		535		676	12
Construction in progress		749		-		749	N/A
Total	$	75,620	$	21,558	$	54,062	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

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

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- References

No definition available.

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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