Fair Value Measurements - Other Hedges (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional Amount	$ 163.2	$ 295.1
Foreign currency forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gain (Loss) on foreign currency contracts	1.7	0.7	(1.7)
Other Current Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets fair value	5.1	5.5
Other Current Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities fair value	(0.7)	(1.3)
Hedges designated as hedging instruments | Cash flow hedges
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional Amount	133.8	248.6
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	5.1	5.5
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	(0.7)	(1.3)
Other hedges not receiving hedge accounting
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional Amount	29.4	46.5
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
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
Other Expense
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency transaction (gain) losses	$ 0.5	$ (1.6)	$ (4.6)