Tax Year Returns that Remain Subject to Examination by Major Tax Jurisdiction (Detail)	12 Months Ended
	Dec. 31, 2015
HONG KONG
Income Tax Examination [Line Items]
Open Tax Years	2014
SWITZERLAND
Income Tax Examination [Line Items]
Open Tax Years	2014
Earliest Tax Year | Australia
Income Tax Examination [Line Items]
Open Tax Years	2011
Earliest Tax Year | Canada
Income Tax Examination [Line Items]
Open Tax Years	2011
Earliest Tax Year | France | Period 1
Income Tax Examination [Line Items]
Open Tax Years	2009
Earliest Tax Year | France | Period 2
Income Tax Examination [Line Items]
Open Tax Years	2012
Earliest Tax Year | GERMANY
Income Tax Examination [Line Items]
Open Tax Years	2013
Earliest Tax Year | Japan
Income Tax Examination [Line Items]
Open Tax Years	2010
Earliest Tax Year | U.K.
Income Tax Examination [Line Items]
Open Tax Years	2013
Earliest Tax Year | U.S.
Income Tax Examination [Line Items]
Open Tax Years	2007
Latest Tax Year | Australia
Income Tax Examination [Line Items]
Open Tax Years	2014
Latest Tax Year | Canada
Income Tax Examination [Line Items]
Open Tax Years	2014
Latest Tax Year | France | Period 1
Income Tax Examination [Line Items]
Open Tax Years	2010
Latest Tax Year | France | Period 2
Income Tax Examination [Line Items]
Open Tax Years	2014
Latest Tax Year | GERMANY
Income Tax Examination [Line Items]
Open Tax Years	2014
Latest Tax Year | Japan
Income Tax Examination [Line Items]
Open Tax Years	2014
Latest Tax Year | U.K.
Income Tax Examination [Line Items]
Open Tax Years	2014
Latest Tax Year | U.S.
Income Tax Examination [Line Items]
Open Tax Years	2014