Fair Value Measurements (Reconciliation Using Significant Unobservable Inputs) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ (7.0)	$ 0.0
Fair Value, Measurements, Recurring [Member]
Contingent consideration at Fair Value	0.4
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Contingent consideration at Fair Value	0.4		$ 17.7
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Included in operating expense	1.4
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ (18.7)