Fair Value Measurements Unobservable Inputs Rollforward (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent Consideration, Liability	$ 0		$ 2.1		$ 0	$ 2.1		$ 24.3
Adjustment to contingent consideration fair value	(3.3)	0.1	(3.2)	(17.3)	(3.2)	(20.5)	0
Foreign Currency Transaction Gain, before Tax					(0.4)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance					3.7	2.0
Realized gains from the sale of investments					0	0
Included in other comprehensive income					0.9	1.7
Ending balance	4.6		3.7		4.6	3.7	2.0
Fair Value, Measurements, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent Consideration, Liability	0.2		3.8		0.2	3.8	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent Consideration, Liability	0				0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent Consideration, Liability	0				0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent Consideration, Liability	0.2				0.2
Long-Term Liability [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent Consideration, Liability	$ 0				$ 0			$ 24.3