Open Tax Years and Ongoing Tax Examinations in Major Jurisdictions (Detail)	12 Months Ended
	Dec. 31, 2014
Switzerland
Income Tax Examination [Line Items]
Open Years	2013
Earliest Tax Year | Germany
Income Tax Examination [Line Items]
Open Years	2009
Examination in Process	2010
Earliest Tax Year | Singapore
Income Tax Examination [Line Items]
Open Years	2010
Earliest Tax Year | United States - Federal Income Tax
Income Tax Examination [Line Items]
Open Years	2010
Earliest Tax Year | United States - Various States
Income Tax Examination [Line Items]
Open Years	2010
Latest Tax Year | Germany
Income Tax Examination [Line Items]
Open Years	2014
Examination in Process	2011
Latest Tax Year | Singapore
Income Tax Examination [Line Items]
Open Years	2014
Latest Tax Year | United States - Federal Income Tax
Income Tax Examination [Line Items]
Open Years	2014
Latest Tax Year | United States - Various States
Income Tax Examination [Line Items]
Open Years	2014