Property, Plant and Equipment, Net

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net.

Property, plant and equipment, net consists of the following:

	Useful Life	June 30, 2015			December 31, 2014
	(in years)	(in millions)
Land		$	656		$	489
Buildings and improvements	4 - 40	2,507			2,353
Machinery, equipment and furniture	1 - 40	5,853			5,594
Assets leased to others	15 - 39	3,844			3,546
Construction in progress		654			584
		13,514			12,566
Less: Accumulated depreciation and amortization		(3,848		)	(3,611		)
Property, plant and equipment, net		$	9,666		$	8,955

Assets leased to others are related to our Railcar and Real Estate segments. Included in assets leased to others in the table above are our Railcar segment's railcars for lease in the amount of approximately $3.4 billion and $3.1 billion as of June 30, 2015 and December 31, 2014, respectively. Additionally, included in assets leased to others in the table above are our Real Estate segment's properties on lease in the amount of $437 million and $450 million as of June 30, 2015 and December 31, 2014, respectively. Aggregate accumulated depreciation pertaining to assets leased to others is $1,004 million and $957 million as of June 30, 2015 and December 31, 2014, respectively.

Depreciation and amortization expense related to property, plant and equipment for the three months ended June 30, 2015 and 2014 was $186 million and $175 million, respectively, and for the six months ended June 30, 2015 and 2014 was $368 million and $342 million, respectively.