Restructuring 2013 Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4.3	$ 1.4	$ 5.4	$ 9.0
2013 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	(3.8)		(3.8)
Employee Severance [Member] | 2013 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4.3		$ 4.3
Professional Employees [Member] | 2013 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Employees affected			800