Commitments and Contingencies - Additional Information (Detail)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2017 USD ($) Facility	Mar. 31, 2017 USD ($)	Jun. 30, 2017 USD ($) Facility property	Dec. 31, 2016 USD ($)
Commitments And Contingencies [Line Items]
Bank guarantees related to appeals on income tax and indirect tax cases			$ 15,900,000
Line of credit facility, maximum borrowing capacity	$ 921,600,000		921,600,000
Available lines of credit	75,000,000		$ 75,000,000
Duration as potentially responsible party, years			20 years
Number of facilities under potentially responsible party investigation | property			8
Property, Plant and Equipment, Net	811,826,000		$ 811,826,000	$ 775,716,000
Bank guarantees and pledged assets to pursue defenses related to other contingencies			31,100,000
Bank guarantees and standby letters of credit [Member]
Commitments And Contingencies [Line Items]
Bank guarantees and letters of credit outstanding			37,100,000
Pledged assets [Member]
Commitments And Contingencies [Line Items]
The amount of pledged assets, principally PP&E to cover income tax and indirect tax assessments			15,200,000
Reserve for Environmental Costs [Member]
Commitments And Contingencies [Line Items]
Estimation of possible loss	5,000,000		5,000,000
Damages from Product Defects [Member]
Commitments And Contingencies [Line Items]
Additional litigation reserve	5,000,000		5,000,000
Product liability	3,500,000	$ 1,800,000
CHINA
Commitments And Contingencies [Line Items]
Property, Plant and Equipment, Net	$ 139,000,000		$ 139,000,000
Number of facilities | Facility	6		6
Number of facilities under construction | Facility	2		2
Guangzhou Flavors Plant [Member] | CHINA
Commitments And Contingencies [Line Items]
Property, Plant and Equipment, Net	$ 67,000,000		$ 67,000,000
Zhejiang Ingredients Plant [Member] | CHINA
Commitments And Contingencies [Line Items]
Property, Plant and Equipment, Net	25,000,000		$ 25,000,000
Minimum
Commitments And Contingencies [Line Items]
Estimation of possible loss				0
Minimum | Zhejiang Ingredients Plant [Member] | CHINA
Commitments And Contingencies [Line Items]
Restructuring, accelerated depreciation of fixed assets				0
Maximum
Commitments And Contingencies [Line Items]
Estimation of possible loss				8,000,000
Maximum | Zhejiang Ingredients Plant [Member] | CHINA
Commitments And Contingencies [Line Items]
Restructuring, accelerated depreciation of fixed assets				$ 25,000,000
ZoomEssence [Member]
Commitments And Contingencies [Line Items]
Payments for legal settlements	56,000,000
Additional payments for legal settlements	$ 1,000,000