Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets [Abstract]

Schedule of Goodwill [Table Text Block]

The changes in the carrying amount of goodwill, net of accumulated impairment losses, for the years ended December 31, 2012 and 2011 are as follows:

							Data Center		IT Services
(dollars in millions)	Wireless			Wireline			Colocation		and Hardware		Total
Balance as of December 31, 2010	$	50.3		$	12.6		$	276.3	$	2.5	$	341.7
Impairment	(50.3		)	—			—		—		(50.3		)
Disposition of home security business assets	—			(0.8		)	—		—		(0.8		)
Balance as of December 31, 2011	—			11.8			276.3		2.5		290.6
Impairment	—			—			—		—		—
Balance as of December 31, 2012	$	—		$	11.8		$	276.3	$	2.5	$	290.6

Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]

Summarized below are the carrying values for the major classes of intangible assets subject to amortization:

	Weighted-
	Average	December 31, 2012					December 31, 2011
	Life in	Gross Carrying		Accumulated			Gross Carrying		Accumulated
(dollars in millions)	Years	Amount		Amortization			Amount		Amortization
Customer relationships
Wireline	10	$	7.0	$	(4.9	)	$	7.0	(4.2		)
Wireless	9	8.7		(8.1		)	8.7		(7.6		)
Data Center Colocation	15	129.5		(36.8		)	136.6		(26.4		)
IT Services and Hardware	5	2.0		(2.0		)	2.0		(2.0		)
		147.2		(51.8		)	154.3		(40.2		)
Trademarks
Wireless	7	6.2		(2.8		)	6.2		(1.5		)
Data Center Colocation	15	7.4		(1.3		)	7.4		(1.3		)
		13.6		(4.1		)	13.6		(2.8		)
Favorable leasehold interest
Data Center Colocation	56	3.9		(0.2		)	3.9		(0.1		)
		$	164.7	$	(56.1	)	$	171.8	$	(43.1	)

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The following table presents estimated amortization expense for 2013 through 2017:

(dollars in millions)
2013	$	18.8
2014	18.4
2015	15.6
2016	12.4
2017	10.2