Fair Value Measurements - Other Hedges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional Amount	$ 52.8		$ 52.8		$ 110.1
Foreign currency forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gain (loss) on foreign currency contracts	(0.5)	$ (0.1)	0.2	$ (0.3)
Other Current Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets fair value	0.2		0.2		7.3
Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities fair value	(0.8)		(0.8)		0.0
Cash flow hedges designated as hedging instruments | Cash flow hedges
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional Amount	52.2		52.2		86.7
Cash flow hedges designated as hedging instruments | Cash flow hedges | Other Current Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets fair value	0.2		0.2		7.3
Cash flow hedges designated as hedging instruments | Cash flow hedges | Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities fair value	(0.8)		(0.8)		0.0
Other hedges not receiving hedge accounting
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional Amount	0.6		0.6		23.4
Other hedges not receiving hedge accounting | Other Current Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets fair value	0.0		0.0		0.0
Other hedges not receiving hedge accounting | Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities fair value	0.0		0.0		$ 0.0
Other (Income) Expense
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net foreign currency loss	$ 0.6	$ 0.4	$ 1.2	$ 0.4