Restructuring Costs (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended								3 Months Ended	6 Months Ended
	Sep. 30, 2012 People	Sep. 30, 2012 Minimum [Member]	Sep. 30, 2012 Maximum [Member]	Sep. 30, 2012 Employee Severance [Member] Minimum [Member]	Sep. 30, 2012 Employee Severance [Member] Maximum [Member]	Sep. 30, 2012 Impairment of Intangible Assets [Member]	Sep. 30, 2012 Facility Closure Costs [Member] Minimum [Member]	Sep. 30, 2012 Facility Closure Costs [Member] Maximum [Member]	Sep. 30, 2012 Forecasted [Member] Minimum [Member]	Dec. 31, 2012 Forecasted [Member] Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Term Cost Structure Will Be Evaluated		3 months	9 months
Restructuring and Related Cost, Number of Positions Eliminated	233
Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date Percent	13.90%
Restructuring and Related Cost, Expected Cost									$ 2.0	$ 3.0
Restructuring And Related Costs Incured And Expected Cost		$ 14.5	$ 16.0	$ 6.5	$ 7.0	$ 2.5	$ 5.5	$ 6.5