Goodwill and Other Intangibles (Details 2) (USD $) In Millions, unless otherwise specified				9 Months Ended					9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Technology	Sep. 30, 2013 Technology Minimum	Sep. 30, 2013 Technology Maximum	Sep. 30, 2013 Customer Relationships	Sep. 30, 2013 Trademarks	Sep. 30, 2013 FCC licenses and other	Sep. 30, 2013 FCC licenses and other Minimum	Sep. 30, 2013 FCC licenses and other Maximum
Intangible assets
Useful Life (in years)				3 years	5 years	12 years	3 years		1 year	20 years
Gross Carrying Amount	$ 44.6		$ 26.9			$ 10.0	$ 5.0	$ 2.7
Accumulated Amortization	(6.1)	0	(3.7)			(0.6)	(1.1)	(0.7)
Net Carrying Amount	$ 38.5		$ 23.2			$ 9.4	$ 3.9	$ 2.0