Property and Equipment, Net

12 Months Ended

Dec. 31, 2011

Property, Plant and Equipment [Abstract]

Property and equipment, net (in millions), and the corresponding ranges of estimated useful lives were as follows:



	Successor						2011
	December 31, 2011			December 31, 2010			Range of Estimated Useful Life
Land	$	5,925		$	5,901		—
Track structure	16,460			15,711			15 – 50 years
Other roadway	20,300			19,752			5 – 100 years
Locomotives	3,773			2,846			5 – 37 years
Freight cars and other equipment	1,501			1,233			8 – 37 years
Computer hardware, software and other	259			250			5 – 9 years
Construction in progress	885			453			—
Total cost	49,103			46,146
Less accumulated depreciation and amortization	(1,056		)	(660		)
Property and equipment, net	$	48,047		$	45,486

The Consolidated Balance Sheets at December 31, 2011 and 2010, included $1,585 million, net of $222 million of amortization, and $1,757 million, net of $113 million of amortization, respectively, for property and equipment under capital leases, primarily for rolling stock. The 2010 property and equipment under capital leases amount has been corrected to appropriately reflect the revalued amount at the acquisition date (see Note 5). The correction did not affect the Company's previously reported financial position or results of operations.

The Company capitalized $20 million, $13 million, $1 million, and $18 million of interest for the year ended December 31, 2011 (Successor), the periods February 13 – December 31, 2010 (Successor) and January 1 – February 12, 2010 (Predecessor), and the year ended December 31, 2009 (Predecessor), respectively.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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