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Taxes and Payroll Charges Payable - Schedule of Taxes and Payroll Charges Payable (Parenthetical) (Detail) - USD ($)
shares in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Oct. 31, 2015
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Taxes And Payroll Charges [abstract]      
Amount related to accident insurance   $ 47.7 $ 54.6
Reduction on provisions payable on social security $ 2.5    
Remaining amount of provisions payable on social security   10.0 11.4
Amount of injunction guaranteeing right to not collect social security contributions   $ 31.6  
Amount involved in suit due to inclusion of the foreign exchange variation     $ 3.3