Restructuring - Summary of Activity of Restructuring (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	$ 13,227	$ 22,335
Expense	51,102	29,722	$ 35,137
Cash payments	(33,946)	(38,090)
Foreign exchange translation and other	(3,388)	(740)
Restructuring Reserve, Ending Balance	26,995	13,227	22,335
Employee separation costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	9,398	15,091
Expense	34,354	19,009
Cash payments	(20,661)	(24,107)
Foreign exchange translation and other	(101)	(595)
Restructuring Reserve, Ending Balance	22,990	9,398	15,091
Other exit costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	3,829	7,244
Expense	16,748	10,713
Cash payments	(13,285)	(13,983)
Foreign exchange translation and other	(3,287)	(145)
Restructuring Reserve, Ending Balance	$ 4,005	$ 3,829	$ 7,244