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Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2012
Center
Operations
Country
Employee
Significant Accounting Policies [Line Items]  
Number of manufacturing operations 313
Number of product development, engineering and sales centres 88
Number of countries in which entity operates 29
Number of employees 119,000
Short-term investments maturity period maximum 3 months
Short-term investments maturity period Less than three months
Estimated useful lives of definite-lived intangible assets 5 years
Changes in assumptions and experience gains and losses Greater than 10%
Period of benefit obligation in current liabilities Next 12 months
Minimum [Member] | Building [Member]
  
Significant Accounting Policies [Line Items]  
Annual rates of depreciation on fixed assets 2.50%
Minimum [Member] | General Purpose Equipment [Member]
  
Significant Accounting Policies [Line Items]  
Annual rates of depreciation on fixed assets 7.00%
Minimum [Member] | Special Purpose Equipment [Member]
  
Significant Accounting Policies [Line Items]  
Annual rates of depreciation on fixed assets 10.00%
Maximum [Member] | Building [Member]
  
Significant Accounting Policies [Line Items]  
Annual rates of depreciation on fixed assets 5.00%
Maximum [Member] | General Purpose Equipment [Member]
  
Significant Accounting Policies [Line Items]  
Annual rates of depreciation on fixed assets 10.00%
Maximum [Member] | Special Purpose Equipment [Member]
  
Significant Accounting Policies [Line Items]  
Annual rates of depreciation on fixed assets 33.00%