Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of amortized intangible assets
Gross Carrying Amount	$ 331.9	$ 334.3
Accumulated Amortization	(141.3)	(133.1)
Amortization of Intangible Assets	15.7	18.1	18.1
Estimated amortization expense
2014	15.0
2015	15.0
2016	14.8
2017	14.8
2018	14.7
Contract based
Components of amortized intangible assets
Gross Carrying Amount	26.2	21.0
Accumulated Amortization	(14.4)	(13.8)
Technology [Member]
Components of amortized intangible assets
Gross Carrying Amount	82.6	91.3
Accumulated Amortization	(40.9)	(40.8)
Marketing related
Components of amortized intangible assets
Gross Carrying Amount	23.0	24.9
Accumulated Amortization	(14.2)	(14.4)
Customer based
Components of amortized intangible assets
Gross Carrying Amount	200.1	197.1
Accumulated Amortization	$ (71.8)	$ (64.1)