Restructuring and Other Charges, Net - Additional Information (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) Facility	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) Facility Position	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 4,918	$ 16,174
Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Expected number of sites closed | Facility	35
Expected number of sites closed, period	12 months
Number of facilities closed | Facility	4		10
2017 Productivity Program
Restructuring Cost and Reserve [Line Items]
Restructuring charge				$ 24,500
Employee Severance | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 15,300
Payments for restructuring	$ 60,000
Employee Severance | 2019 Severance Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charge			$ 21,300
Number of positions expected to be eliminated | Position			190
Payments for restructuring			$ 25,000
Employee Severance | 2017 Productivity Program
Restructuring Cost and Reserve [Line Items]
Payments for restructuring				$ 25,000
Greater Asia | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility			1
Europe, Africa and Middle East | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility	2		6
Latin America | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility	1		2
North America | Frutarom Integration Initiative
Restructuring Cost and Reserve [Line Items]
Number of facilities closed | Facility	1		1