Summary of Tax Years that Remain Subject to Examination in Company Major Tax Jurisdictions (Detail)	6 Months Ended
	Jun. 30, 2012
United States | Federal | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2008
United States | Federal | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
United States | States | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2004
United States | States | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Australia
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Brazil | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2010
Brazil | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Canada | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2009
Canada | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
China | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2003
China | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Denmark | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2009
Denmark | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
France
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Germany
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Italy | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2009
Italy | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Luxembourg
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Mexico | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2007
Mexico | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Philippines | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2008
Philippines | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
South Korea | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2006
South Korea | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Spain | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2008
Spain | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
Taiwan | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2008
Taiwan | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011
United Kingdom | Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2008
United Kingdom | Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Years Subject to Examination	2011