Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net.

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

		December 31,
	Useful Life	2015			2014
	(in years)	(in millions)
Land		$	549		$	424
Buildings and improvements	4 - 40	2,456			2,353
Machinery, equipment and furniture	1 - 30	6,047			5,594
Assets leased to others	15 - 39	3,994			3,546
Construction in progress		598			506
		13,644			12,423
Less: Accumulated depreciation and amortization		(4,109		)	(3,611		)
Property, plant and equipment, net		$	9,535		$	8,812

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 $3.6 billion and $3.1 billion as of December 31, 2015 and 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 $423 million and $450 million as of December 31, 2015 and 2014, respectively. Aggregate accumulated depreciation pertaining to assets leased to others is approximately $1.1 billion and $1.0 billion as of December 31, 2015 and 2014, respectively.

Depreciation and amortization expense related to property, plant and equipment for the years ended December 31, 2015, 2014 and 2013 was $757 million, $701 million and $622 million, respectively.

See Note 6, "Fair Value Measurements," for discussion regarding impairments to our property, plant and equipment.