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Segment Information - Reportable Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net sales:
Net sales	$ 2,465.0	$ 1,347.0
Segment Adjusted Operating EBITDA
Operating profit	4.0	196.0
Other Depreciation and Amortization	242.0	81.0
Restructuring and other charges, net	(4.0)	(5.0)
Losses on sale of assets	0.0	(1.0)
Severance Costs	(3.0)	0.0
Interest expense	(65.0)	(32.0)
Other income, net	7.0	(11.0)
Income before taxes	(54.0)	153.0
Segment Adjusted Operating EBITDA	569.0	303.0
Shareholder Activism Related Costs	(7.0)	0.0
Corporate and Other
Segment Adjusted Operating EBITDA
Restructuring and other charges, net	(4.0)	(5.0)
Losses on sale of assets	0.0	(1.0)
Compliance Review and Legal Defense Costs	0.0	(1.0)
Operating Segments | Nourish
Net sales:
Net sales	1,308.0	772.0
Segment Adjusted Operating EBITDA
Segment Adjusted Operating EBITDA	270.0	176.0
Operating Segments | Scent
Net sales:
Net sales	569.0	541.0
Segment Adjusted Operating EBITDA
Segment Adjusted Operating EBITDA	128.0	118.0
Operating Segments | Health & Biosciences
Net sales:
Net sales	426.0	34.0
Segment Adjusted Operating EBITDA
Segment Adjusted Operating EBITDA	128.0	9.0
Operating Segments | Pharma Solutions
Net sales:
Net sales	162.0	0.0
Segment Adjusted Operating EBITDA
Segment Adjusted Operating EBITDA	43.0	0.0
Nutrition & Biosciences, Inc
Segment Adjusted Operating EBITDA
Transaction related costs	(89.0)
Nutrition & Biosciences, Inc | Corporate and Other
Segment Adjusted Operating EBITDA
Integration-related costs	(37.0)	(10.0)
N&B Inventory Step-Up Costs	(182.0)	0.0
Transaction related costs	(89.0)	(5.0)
Frutarom | Corporate and Other
Segment Adjusted Operating EBITDA
Integration-related costs	$ (1.0)	$ (4.0)

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