Income Taxes (Details 7)	12 Months Ended
	Dec. 31, 2014
Canada
Income Tax Contingency [Line Items]
Open tax year	2009
Germany
Income Tax Contingency [Line Items]
Open tax year	2005
Italy
Income Tax Contingency [Line Items]
Open tax year	2009
Luxembourg
Income Tax Contingency [Line Items]
Open tax year	2010
Poland
Income Tax Contingency [Line Items]
Open tax year	2007
Sweden
Income Tax Contingency [Line Items]
Open tax year	2009
Switzerland
Income Tax Contingency [Line Items]
Open tax year	2010
United Kingdom
Income Tax Contingency [Line Items]
Open tax year	2011
United States
Income Tax Contingency [Line Items]
Open tax year	2009