Segment Information - Reportable Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales:
Net sales	$ 1,347,317	$ 1,297,402
Segment profit:
Operating profit	196,222	163,870
Restructuring and other charges, net	(4,918)	(16,174)
(Losses) gains on sale of assets	(754)	188
Interest expense	(32,140)	(36,572)
Other income (expense)	(10,574)	7,278
Income before taxes	153,508	134,576
Taste
Net sales:
Net sales	830,322	804,802
Scent
Net sales:
Net sales	516,995	492,600
Corporate and Other
Segment profit:
Operational improvement initiative costs	0	(406)
Restructuring and other charges, net	(4,918)	(16,174)
(Losses) gains on sale of assets	(754)	188
Frutarom Acquisition Related Costs	(813)	(9,529)
FDA Mandated Product Recall	(649)	0
Operating Segments | Taste
Net sales:
Net sales	830,322	804,802
Segment profit:
Operating profit	137,347	131,402
Operating Segments | Scent
Net sales:
Net sales	516,995	492,600
Segment profit:
Operating profit	105,395	89,953
Corporate, Non-Segment
Segment profit:
Operating profit	(20,393)	(16,667)
Nutrition & Biosciences, Inc | Corporate and Other
Segment profit:
Integration-related costs	(10,144)	0
Transaction related costs	(5,199)	0
Frutarom | Corporate and Other
Segment profit:
Integration-related costs	$ (3,650)	$ (14,897)