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Summary of Tax Years that Remain Subject to Examination in the Company's Major Tax Jurisdictions (Detail)
12 Months Ended
Dec. 31, 2011
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 2007
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
Mexico | Minimum
 
Income Tax Examination [Line Items]  
Income Tax Examination, Years Subject to Examination 2006
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 2007
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