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Restructuring and Other Charges - Movements in Restructuring and Related Accruals (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Balance	$ 21,085	$ 5,200	$ 7,957
Additional Charges (Reversals), Net	17,295	29,765	5,079
Non-Cash Charges	(11,456)	(679)	(418)
Cash Payments	(12,037)	(13,201)	(7,418)
Balance	14,887	21,085	5,200
Additional charges, net	17,295	29,765	5,079
Severance
Restructuring Reserve [Roll Forward]
Balance	0
Non-Cash Charges	0
Cash Payments	(270)
Balance	2,415	0
Taste [Member]
Restructuring Reserve [Roll Forward]
Additional charges, net	16,878	10,045	1,646
Scent [Member]
Restructuring Reserve [Roll Forward]
Additional charges, net	2,791	12,093	3,433
Shared IT & Corporate Costs [Member]
Restructuring Reserve [Roll Forward]
Additional charges, net	(2,374)	7,627	0
Frutarom Integration Initiative [Member] | Severance
Restructuring Reserve [Roll Forward]
Balance	4,038	0
Additional Charges (Reversals), Net	2,476	6,110
Non-Cash Charges	0	0
Cash Payments	(3,477)	(2,072)
Balance	3,037	4,038	0
Additional charges, net	26,700
Frutarom Integration Initiative [Member] | Fixed asset write down
Restructuring Reserve [Roll Forward]
Balance	0	0
Additional Charges (Reversals), Net	11,356	534
Non-Cash Charges	(11,356)	(534)
Cash Payments	0	0
Balance	0	0	0
Frutarom Integration Initiative [Member] | Other
Restructuring Reserve [Roll Forward]
Balance	2,485	0
Additional Charges (Reversals), Net	2,488	3,726
Non-Cash Charges	(100)	(145)
Cash Payments	(1,956)	(1,096)
Balance	2,917	2,485	0
2019 Severance Initiatives [Member] | Severance
Restructuring Reserve [Roll Forward]
Balance	12,897	0
Additional Charges (Reversals), Net	(793)	20,871
Non-Cash Charges	0	0
Cash Payments	(6,057)	(7,974)
Balance	6,047	12,897	0
Additional charges, net	20,500
2019 Severance Initiatives [Member] | Other
Restructuring Reserve [Roll Forward]
Balance	471	0
Additional Charges (Reversals), Net	0	471
Non-Cash Charges	0	0
Cash Payments	0	0
Balance	471	471	0
2017 Productivity Program [Member]
Restructuring Reserve [Roll Forward]
Additional charges, net	24,200
2017 Productivity Program [Member] | Severance
Restructuring Reserve [Roll Forward]
Balance	1,106	4,125	7,539
Additional Charges (Reversals), Net	(917)	(1,947)	3,884
Non-Cash Charges	0	0	0
Cash Payments	(189)	(1,072)	(7,298)
Balance	0	1,106	4,125
2017 Productivity Program [Member] | Other
Restructuring Reserve [Roll Forward]
Balance	88	1,075	418
Additional Charges (Reversals), Net	0	0	1,195
Non-Cash Charges	0	0	(418)
Cash Payments	(88)	(987)	(120)
Balance	$ 0	$ 88	$ 1,075

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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