Property, Plant and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

The components of our property, plant and equipment as of December 31, 2016 and 2015 are as follows (dollars in millions):

	Cost		Accumulated Depreciation			Net
December 31, 2016
Land	$	179	$	—		$	179
Land Improvements	77		(58		)	19
Facility and Leasehold Improvements	2,679		(1,447		)	1,232
Network Infrastructure	9,110		(3,899		)	5,211
Operating Equipment	8,846		(5,626		)	3,220
Furniture, Fixtures and Office Equipment	241		(196		)	45
Other	26		(23		)	3
Construction-in-Progress	230		—			230
	$	21,388	$	(11,249	)	$	10,139
December 31, 2015
Land	$	180	$	—		$	180
Land Improvements	76		(53		)	23
Facility and Leasehold Improvements	2,582		(1,352		)	1,230
Network Infrastructure	8,979		(3,669		)	5,310
Operating Equipment	7,988		(5,079		)	2,909
Furniture, Fixtures and Office Equipment	242		(189		)	53
Other	28		(23		)	5
Construction-in-Progress	168		—			168
	$	20,243	$	(10,365	)	$	9,878

Depreciation expense was $1.039 billion in 2016, $939 million in 2015 and $713 million in 2014.