Restructuring - Summary of Activity of Restructuring (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]        
Restructuring Reserve, Beginning Balance     $ 34,475  
Restructuring $ 10,430 $ 8,540 33,468 $ 34,809
Cash payments     (45,611)  
Foreign exchange translation and other     1,432  
Restructuring Reserve, Ending Balance 23,764   23,764  
Employee Separation Costs [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring Reserve, Beginning Balance     32,707  
Restructuring     12,345  
Cash payments     (24,363)  
Foreign exchange translation and other     1,251  
Restructuring Reserve, Ending Balance 21,940   21,940  
Other Exit Costs [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring Reserve, Beginning Balance     1,768  
Restructuring     21,123  
Cash payments     (21,248)  
Foreign exchange translation and other     181  
Restructuring Reserve, Ending Balance $ 1,824   $ 1,824