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Presentation of the Financial Statements and Accounting Practices - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 17, 2018
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2017
Dec. 31, 2016
Jan. 01, 2016
Disclosure of basis of preparation of financial statements [line items]            
Percentage of ownership interest in an investee   100.00%        
Percentage of ownership interest held by subsidiaries in joint operations 20.00%          
Contract assets   $ 358.0 $ 447.5 $ 370.6 $ 370.6 $ 387.7
Contract liabilities   $ 1,243.6 1,126.6   1,244.8  
Description on period of activity of inventories   Probable losses on inventories of spare parts are recognized based on technical obsolescence or items without activity for over two years and for which there is no future demand.        
Percentage of dividend and interest on capital on net income   25.00%        
Bottom of range [member]            
Disclosure of basis of preparation of financial statements [line items]            
Effective percentage of hedging instruments   80.00%        
Warranty coverage period   3 years        
Top of range [member]            
Disclosure of basis of preparation of financial statements [line items]            
Effective percentage of hedging instruments   125.00%        
Warranty coverage period   6 years        
Computer software [member]            
Disclosure of basis of preparation of financial statements [line items]            
Description on tenure of benefits derived from intangible assets   Development costs directly attributable to identifiable and unique software, controlled by the Company and that is expected to generate benefits greater than the costs for more than one year, are recorded in intangible assets.        
Employee profit sharing plan [member]            
Disclosure of basis of preparation of financial statements [line items]            
Percentage of employee profit sharing of net income   12.50%        
Percentage of total amount of profit sharing equally divided to employees   50.00%        
Percentage of other profit sharing proportion to employees salary   50.00%        
Increase (decrease) due to application of IFRS 15 [member]            
Disclosure of basis of preparation of financial statements [line items]            
Contract assets     447.5 370.6 $ 370.6 $ 387.7
Contract liabilities     $ 1,126.6 $ 1,244.8    
Brazil [member]            
Disclosure of basis of preparation of financial statements [line items]            
Nominal rate of current income tax   34.00%        
Percentage of income tax rate   25.00%        
Percentage of social contribution on net income   9.00%        
SAVIS Tecnologia e Sistemas S.A. [member]            
Disclosure of basis of preparation of financial statements [line items]            
Percentage of ownership interest held by subsidiaries in joint operations   93.50%        
SAVIS Tecnologia e Sistemas S.A. [member] | Brazil [member]            
Disclosure of basis of preparation of financial statements [line items]            
Percentage of ownership interest in an investee   100.00%        
Embraer S.A [member]            
Disclosure of basis of preparation of financial statements [line items]            
Percentage of ownership interest held by subsidiaries in joint operations   6.50%