| 
           Significant Accounting Policies - Additional Information (Detail) 
        In Millions, unless otherwise specified  | 
        3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
           Mar. 31, 2015
 
          USD ($) 
         | 
        
           Mar. 31, 2015
 
          VEF 
         | 
        
           Mar. 31, 2014
 
          USD ($) 
         | 
        
           Mar. 31, 2014
 
          VEF 
         | 
        
           Dec. 31, 2014
 
          USD ($) 
         | 
        
           Dec. 31, 2013
 
          USD ($) 
         | 
        
           Mar. 31, 2015
 
          Simadi [Member]
 
          USD ($) 
         | 
        
           Mar. 31, 2015
 
          Simadi [Member]
 
          VEF 
         | 
        
           Feb. 12, 2015
 
          Simadi [Member]
 
          VEF 
         | 
        
           Dec. 31, 2014
 
          SICAD II [Member]
 
          VEF 
         | 
        
           Mar. 31, 2015
 
          Venezuela [Member]
 
          USD ($) 
         | 
        
           Mar. 31, 2014
 
          Venezuela [Member] 
         | 
        
           Dec. 31, 2014
 
          Venezuela [Member] 
         | 
        
           Mar. 31, 2015
 
          Venezuela [Member]
 
          Simadi [Member]
 
          USD ($) 
         | 
        
           Mar. 31, 2014
 
          Selling, general and administrative expenses [Member]
 
          SICAD I [Member]
 
          USD ($) 
         | 
        
           Mar. 31, 2015
 
          Selling, general and administrative expenses [Member]
 
          Venezuela [Member]
 
          Simadi [Member]
 
          USD ($) 
         | 
      |
| Subsidiary or Equity Method Investee [Line Items] | ||||||||||||||||
| Foreign currency exchange rate, Bolivars per USD | 192 | 50 | ||||||||||||||
| SIMADI rate for remeasurement | 170 | |||||||||||||||
| Amount of award received through the SIMADI exchange mechanism | $ 0.1 | |||||||||||||||
| Foreign currency transaction losses | 86.1 | 32.6 | ||||||||||||||
| Inventory write-downs in cost of sales | 4.9 | 11.0 | 1.4 | |||||||||||||
| Net monetary Bolivar denominated assets and liabilities | 11.0 | |||||||||||||||
| Cash and cash equivalents | 715.5 | 1,261.9 | 645.4 | 973.0 | 11.5 | |||||||||||
| Subsidiary's net sales to Company's consolidated net sales, percentage | 1.00% | 4.00% | ||||||||||||||
| Subsidiary asset as percentage of consolidated assets | 1.00% | 2.00% | ||||||||||||||
| Purchase price of bonds invested in Bolivar denominated bonds | 0 | 3.2 | 20.3 | |||||||||||||
| Amortized cost of bonds | 1.1 | |||||||||||||||
| Market value of bonds | 0.9 | |||||||||||||||
| Other-than-temporary impairments relating to available-for-sale securities | $ 2.3 | $ 3.2 | ||||||||||||||