Restructuring - Summary of Restructuring Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,927	$ 10,013	$ 23,642	$ 17,138
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	789	1,896	7,922	3,001
Europe [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4,067	7,724	11,620	13,253
Asia Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,061	332	3,947	769
South America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 10	$ 61	$ 153	$ 115