Income Taxes - Additional Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]
U.S. federal statutory income tax rate (as a percent)	35.00%
Unremitted foreign earnings kept to reinvest	$ 355
Net change in the total valuation allowance	(1.8)	12.9
Tax credit carryforwards for U.S. tax purposes	9.5
Unrecognized tax benefits	43.1	42.7	32.6	12.5
Unrecognized tax benefits that impact on effective tax rate	39.4
Interest expense (income) related to unrecognized tax benefit	1.5	0.7	0.1
Interest accrued on unrecognized tax benefits	2.7	1.6
Interest related to the unrecognized tax benefit reversed	0.1
Decrease in reasonably possible unrecognized tax benefits within next twelve months, minimum	8
Decrease in reasonably possible unrecognized tax benefits within next twelve months, maximum	14
Foreign country
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	211.6
Valuation allowance on net operating losses	207.9
Foreign country | Minimum
Operating Loss Carryforwards [Line Items]
Statute of limitations on years that can be open for examination	3 years
Foreign country | Maximum
Operating Loss Carryforwards [Line Items]
Statute of limitations on years that can be open for examination	5 years
Spain
Operating Loss Carryforwards [Line Items]
Carryforward period	18 years
China
Operating Loss Carryforwards [Line Items]
Carryforward period	5 years
U.S. | Minimum
Operating Loss Carryforwards [Line Items]
Statute of limitations on years that can be open for examination	3 years
U.S. | Maximum
Operating Loss Carryforwards [Line Items]
Statute of limitations on years that can be open for examination	5 years
Early adoption of standard
Operating Loss Carryforwards [Line Items]
Reduction in long-term deferred tax liability, net	$ 6.9	$ 21.4