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Properties (Tables)

3 Months Ended

Mar. 31, 2020

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, 2020	Cost		Depreciation		Value		Useful Life
Land	$	5,275	$	N/A	$	5,275	N/A
Road:
Rail and other track material		17,288		6,440		10,848	42
Ties		10,793		3,230		7,563	34
Ballast		5,798		1,687		4,111	34
Other roadway [a]		20,486		4,124		16,362	48
Total road		54,365		15,481		38,884	N/A
Equipment:
Locomotives		9,456		3,453		6,003	18
Freight cars		2,089		783		1,306	24
Work equipment and other		1,094		330		764	18
Total equipment		12,639		4,566		8,073	N/A
Technology and other		1,193		490		703	12
Construction in progress		1,186		-		1,186	N/A
Total	$	74,658	$	20,537	$	54,121	N/A

Millions, Except Estimated Useful Life			Accumulated		Net Book		Estimated
As of December 31, 2019	Cost		Depreciation		Value		Useful Life
Land	$	5,276	$	N/A	$	5,276	N/A
Road:
Rail and other track material		17,178		6,381		10,797	42
Ties		10,693		3,186		7,507	34
Ballast		5,752		1,669		4,083	34
Other roadway [a]		20,331		4,056		16,275	48
Total road		53,954		15,292		38,662	N/A
Equipment:
Locomotives		9,467		3,434		6,033	18
Freight cars		2,083		779		1,304	25
Work equipment and other		1,081		322		759	18
Total equipment		12,631		4,535		8,096	N/A
Technology and other		1,136		503		633	12
Construction in progress		1,249		-		1,249	N/A
Total	$	74,246	$	20,330	$	53,916	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=6877327&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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