Commitments and Contingencies - Additional Information (Detail)	3 Months Ended				12 Months Ended
	Dec. 31, 2018 USD ($) Facility	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) Facility	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Commitments And Contingencies [Line Items]
Minimum rental payments under non-cancelable operating leases, 2019	$ 49,300,000				$ 49,300,000
Minimum rental payments under non-cancelable operating leases, 2020	42,200,000				42,200,000
Minimum rental payments under non-cancelable operating leases, 2021	36,400,000				36,400,000
Minimum rental payments under non-cancelable operating leases, 2022	32,200,000				32,200,000
Minimum rental payments under non-cancelable operating leases, from 2023 and thereafter	229,600,000				229,600,000
Rental expense					42,400,000	$ 37,800,000	$ 35,400,000
Amount still available for additional borrowings	1,000,000,000				1,000,000,000
Available lines of credit	104,300,000				$ 104,300,000
Duration as potentially responsible party, years					20 years
Number of facilities under Potentially Responsible Party investigation | Facility					7
Estimated maximum future costs of environmental liabilities for identified sites (less than $5 million)	3,000,000				$ 3,000,000
Property, plant and equipment, gross	2,492,938,000			$ 2,090,755,000	2,492,938,000	2,090,755,000
Bank guarantees and pledged assets to pursue defenses related to other contingencies					28,000,000
Reversal of previously recorded provision		$ (1,000,000)
Product liability accrual period expense					5,000,000
Recovery of litigation charges					0	$ 56,000,000	$ 0
Aggregate amount paid				$ 3,000,000	16,000,000
Amount paid			$ 13,000,000
Reimbursement to supplier for product recall					13,100,000
Minimum [Member]
Commitments And Contingencies [Line Items]
Estimated maximum future costs of environmental liabilities for identified sites (less than $5 million)	0				0
Maximum [Member]
Commitments And Contingencies [Line Items]
Estimated maximum future costs of environmental liabilities for identified sites (less than $5 million)	10,000,000				10,000,000
China [Member]
Commitments And Contingencies [Line Items]
Property, plant and equipment, gross	$ 194,000,000				$ 194,000,000
Number of plants | Facility	9				9
Number of plants under construction | Facility	1				1
Guangzhou Flavors Plant [Member] | Guangzhou, China [Member]
Commitments And Contingencies [Line Items]
Property, plant and equipment, gross	$ 108,000,000				$ 108,000,000
Zhejiang Ingredients Plant [Member] | Zhejiang, China [Member]
Commitments And Contingencies [Line Items]
Possible compensation payments for relocation	50,000,000				50,000,000
Proceeds from compensation for relocation	15,000,000
Property, plant and equipment, gross	21,000,000				21,000,000
Pledged assets [Member]
Commitments And Contingencies [Line Items]
The amount of pledged assets, principally PP&E to cover income tax and indirect tax assessments					10,500,000
Bank guarantees and standby letters of credit [Member]
Commitments And Contingencies [Line Items]
Bank guarantees and letters of credit outstanding					60,800,000
Bank guarantees [Member]
Commitments And Contingencies [Line Items]
Bank guarantees related to appeals on income tax and indirect tax cases					17,500,000
Damages from Product Defects [Member]
Commitments And Contingencies [Line Items]
Reversal of previously recorded provision	$ (17,500,000)				$ (17,500,000)
ZoomEssence [Member]
Commitments And Contingencies [Line Items]
Payments for legal settlements		$ 56,000,000