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Fair Value Measurements (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Transaction Gain, before Tax	$ (0.1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	4.5			$ 3.7
Assets, Fair Value Disclosure [Abstract]
Business Combination, Contingent Consideration, Liability	$ 3.8			$ 3.8
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		$ 4.6	$ 4.6
Trading securities		2.4	2.3
Business Combination, Contingent Consideration, Liability		0.2	0.2
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		0.0	0.0
Trading securities		2.4	2.3
Business Combination, Contingent Consideration, Liability		0.0	0.0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		0.0	0.0
Trading securities		0.0	0.0
Business Combination, Contingent Consideration, Liability		0.0	0.0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		4.6	4.6
Trading securities		0.0	0.0
Business Combination, Contingent Consideration, Liability		0.2	0.2
Senior Secured Notes Maturing 2017 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Fair Value Disclosure		$ 375.0	$ 371.0

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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