Annual report pursuant to Section 13 and 15(d)

Employee Compensation Plans - Additional Information (Detail)

v3.6.0.2
Employee Compensation Plans - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Compensation Related Costs [Abstract]      
Contribution made by company to its profit sharing plan $ 4.8 $ 4.3 $ 3.5
Expenses relating to international deferred compensation plans $ 5.8 5.5 7.5
Percentage of matching contribution related to the Management Deferred Compensation Plan and the Senior Executive Deferred Compensation Plan 3.50%    
Deferred compensation plans expense excluding participant contributions $ 3.6 0.1 $ 1.7
Total long-term deferred compensation liability 50.0 43.6  
Value of the assets in the rabbi trust $ 30.6 $ 29.3