Income Taxes Income Taxes (Details 2) - Earliest Tax Year [Member]	6 Months Ended
	Jun. 30, 2015
Administration of the Treasury, Belgium [Member]
Income Tax Examination [Line Items]
Open Tax Year	2008
Secretariat of the Federal Revenue Bureau of Brazil [Member]
Income Tax Examination [Line Items]
Open Tax Year	2009
State Administration of Taxation, China [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011
Ministry of the Economy, Finance and Industry, France [Member]
Income Tax Examination [Line Items]
Open Tax Year	2010
National Tax Agency, Japan [Member]
Income Tax Examination [Line Items]
Open Tax Year	2009
Mexican Tax Authority [Member]
Income Tax Examination [Line Items]
Open Tax Year	2009
South Africa Revenue Service (SARS) [Member]
Income Tax Examination [Line Items]
Open Tax Year	2009
Her Majesty's Revenue and Customs (HMRC) [Member]
Income Tax Examination [Line Items]
Open Tax Year	2008
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Open Tax Year	2011