Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment is comprised of the following:

	December 31,						Depreciable Lives (Years)
(dollars in millions)	2014			2013
Land and rights-of-way	$	4.3		$	4.3		20	-	Indefinite
Buildings and leasehold improvements	174.0			172.8			2	-	40
Network equipment	3,028.6			2,897.7			2	-	50
Office software, furniture, fixtures and vehicles	157.9			152.9			2	-	14
Construction in process	25.7			20.7			n/a
Gross value	3,390.5			3,248.4
Accumulated depreciation	(2,531.0		)	(2,345.6		)
Property, plant and equipment, net	$	859.5		$	902.8