Segment Information - Reportable Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net sales:
Net sales	$ 1,268,076	$ 1,267,345	$ 3,814,166	$ 3,856,315
Segment profit:
Operating profit	150,289	184,664	465,881	548,471
Restructuring and other charges, net	(1,497)	(3,716)	(8,299)	(22,415)
Losses on sale of assets	(415)	(372)	(1,568)	(1,136)
Interest expense	(34,844)	(33,497)	(99,046)	(102,662)
Other (expense) income, net	(9,945)	5,699	(4,762)	15,114
Income before taxes	105,500	156,866	362,073	460,923
Taste
Net sales:
Net sales	765,238	782,428	2,343,884	2,398,549
Scent
Net sales:
Net sales	502,838	484,917	1,470,282	1,457,766
Corporate and Other
Segment profit:
Operational improvement initiative costs	0	(712)	0	(1,652)
Restructuring and other charges, net	(1,497)	(3,716)	(8,299)	(22,415)
Losses on sale of assets	(415)	(372)	(1,568)	(1,136)
FDA Mandated Product Recall	0	(250)	0	(250)
Compliance Review and Legal Defense Costs	(1,000)	(3,623)	(1,624)	(3,623)
Operating Segments | Taste
Net sales:
Net sales	765,238	782,428	2,343,884	2,398,549
Segment profit:
Operating profit	101,600	121,425	346,223	383,450
Operating Segments | Scent
Net sales:
Net sales	502,838	484,917	1,470,282	1,457,766
Segment profit:
Operating profit	101,388	87,894	277,156	272,061
Corporate, Non-Segment
Segment profit:
Operating profit	(9,608)	(8,385)	(49,550)	(35,957)
Nutrition & Biosciences, Inc | Corporate and Other
Segment profit:
Integration-related costs	(29,241)	0	(61,887)	0
Transaction related costs	(8,247)	0	(24,372)	0
Frutarom | Corporate and Other
Segment profit:
Integration-related costs	(1,883)	(10,511)	(8,816)	(36,825)
Transaction related costs	$ (808)	$ 2,914	$ (1,382)	$ (5,182)