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Restructuring and Other Charges, Net - Changes in Employee-Related Restructuring Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Additional charges, net	$ 2,525	$ 1,186	$ 18,699	$ 1,903
Fragrance Ingredients Rationalization
Restructuring Reserve [Roll Forward]
Beginning Balance			5,200
Additional charges, net			18,699
Payments			(6,653)
Ending Balance	17,246		17,246
Fragrance Ingredients Rationalization | Employee-Related Costs
Restructuring Reserve [Roll Forward]
Beginning Balance			4,125
Additional charges, net			15,126
Payments			(5,503)
Ending Balance	13,748		13,748
Fragrance Ingredients Rationalization | Other
Restructuring Reserve [Roll Forward]
Beginning Balance			1,075
Additional charges, net			3,573
Payments			(1,150)
Ending Balance	$ 3,498		$ 3,498

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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-Publisher FASB
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-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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