Restructuring - Summary of Restructuring Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 35,137	$ 46,031	$ 53,844
Employee separation costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	16,245	18,017
Other exit costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	18,892	28,014
North America [Member] | Reportable Geographical Components [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5,963	1,680	5,232
Europe [Member] | Reportable Geographical Components [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	25,862	42,008	47,868
Asia Pacific [Member] | Reportable Geographical Components [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,324	2,343	744
South America [Member] | Reportable Geographical Components [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 988	$ 0	$ 0