Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011 item
Income Taxes
Net change in the total valuation allowance	$ 12.9	$ 10.0
Tax credit carryforwards for U.S. tax purposes	28.8
Operating loss carryforwards
Unrecognized tax benefits that impact on effective tax rate	39
Reduction of uncertain tax benefits due to the favorable settlement			6.7
Activity related to unrecognized tax benefit
Balance at the beginning of the period	32.6	12.5	20.1
Additions based on tax positions related to the current year	5.2	1.7	1.5
Additions/(reductions) for tax positions of prior years	5.7	19.0	(1.1)
Decreases relating to settlements with tax authorities / reduction of uncertain tax benefits due to the favorable settlement			(6.7)
Expiration of the statute of limitations for the assessment of taxes	(1.3)	(0.8)	(1.6)
Other, including currency translation	0.5	0.2	0.3
Balance at the end of the period	42.7	32.6	12.5
Interest expense (income) related to unrecognized tax benefit	0.7	0.1	(0.1)
Interest accrued on unrecognized tax benefits	1.6	0.9
Interest related to the unrecognized tax benefit reversed		0.1
Number of jurisdictions in which the company settled an audit with foreign tax authorities			1
U.S. | Maximum
Operating loss carryforwards
Statute of limitations on years that can be open for examination	5 years
U.S. | Minimum
Operating loss carryforwards
Statute of limitations on years that can be open for examination	3 years
Foreign country
Operating loss carryforwards
Net operating loss carryforwards	231.8
Valuation allowance on net operating losses	214.8
Reduction of uncertain tax benefits due to the favorable settlement			5.5
Activity related to unrecognized tax benefit
Decreases relating to settlements with tax authorities / reduction of uncertain tax benefits due to the favorable settlement			$ (5.5)
Foreign country | Maximum
Operating loss carryforwards
Statute of limitations on years that can be open for examination	5 years
Foreign country | Minimum
Operating loss carryforwards
Statute of limitations on years that can be open for examination	3 years
Spain
Operating loss carryforwards
Carryforward period	18 years
China
Operating loss carryforwards
Carryforward period	5 years