Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Depreciation and amortization for the Company's property, plant and equipment are computed on the straight-line method based on the following useful lives:

Facility and Leasehold Improvements	10	-	40	years
Network Infrastructure (including fiber and conduit)	25	-	50	years
Operating Equipment	4	-	15	years
Furniture, Fixtures, Office Equipment and Other	2	-	7	years

The components of the Company's property, plant and equipment as of December 31, 2012 and 2011 are as follows (dollars in millions):

	Cost		Accumulated Depreciation			Net
December 31, 2012
Land	$	195	$	—		$	195
Land Improvements	73		(43		)	30
Facility and Leasehold Improvements	2,050		(1,074		)	976
Network Infrastructure	8,342		(3,058		)	5,284
Operating Equipment	5,506		(3,997		)	1,509
Furniture, Fixtures and Office Equipment	249		(166		)	83
Other	21		(21		)	—
Construction-in-Progress	122		—			122
	$	16,558	$	(8,359	)	$	8,199
December 31, 2011
Land	$	195	$	—		$	195
Land Improvements	73		(40		)	33
Facility and Leasehold Improvements	2,046		(978		)	1,068
Network Infrastructure	8,189		(2,817		)	5,372
Operating Equipment	4,978		(3,680		)	1,298
Furniture, Fixtures and Office Equipment	228		(142		)	86
Other	21		(21		)	—
Construction-in-Progress	84		—			84
	$	15,814	$	(7,678	)	$	8,136