Restructuring - Summary of Restructuring Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 8,323	$ 12,206	$ 18,311	$ 23,038
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	817	395	817	1,355
Europe [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	6,816	11,658	16,105	20,493
Asia Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 690	$ 153	$ 1,389	$ 1,190