Income Tax Examination Periods (Details)	12 Months Ended
	Dec. 31, 2012
Netherlands [Member]
Income Tax Examination [Line Items]
Income Tax Examination Period Start	2006
Income Tax Examination Period End	2012
Canada [Member]
Income Tax Examination [Line Items]
Income Tax Examination Period Start	2007
Income Tax Examination Period End	2012
Japan [Member]
Income Tax Examination [Line Items]
Income Tax Examination Period Start	2007
Income Tax Examination Period End	2012
Singapore [Member]
Income Tax Examination [Line Items]
Income Tax Examination Period Start	2008
Income Tax Examination Period End	2012
United States [Member]
Income Tax Examination [Line Items]
Income Tax Examination Period Start	2010
Income Tax Examination Period End	2012