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Commitments and Contingencies - Additional Information (Detail) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) Facility property | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2018 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |
Bank guarantees related to appeals on income tax and indirect tax cases | $ 17,900,000 |  |  |
Available lines of credit | $ 107,700,000 |  |  |
Duration as potentially responsible party, years | 20 years |  |  |
Number of facilities under potentially responsible party investigation | property | 7 |  |  |
Property, Plant and Equipment, Net | $ 1,294,029,000 |  |  | $ 1,241,152,000
Bank guarantees and pledged assets to pursue defenses related to other contingencies | 28,200,000 |  |  |
Loss contingency accrual for the period | 4,800,000 |  |  |
Product liability |  | $ 5,000,000 |  |
Settlement of claim |  | 16,000,000 | $ 3,000,000 |
Product Liability Contingency, Loss Exposure in Excess of Accrual, Amount Paid |  | $ 13,000,000 |  |
Product Liability Contingency, Loss Exposure in Excess of Accrual, Best Estimate | 1,000,000 |  |  |
Bank guarantees and standby letters of credit |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Bank guarantees and letters of credit outstanding | 58,500,000 |  |  |
Pledged assets |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
The amount of pledged assets, principally PP&E to cover income tax and indirect tax assessments | 10,300,000 |  |  |
Reserve for Environmental Costs |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Estimation of possible loss | 3,000,000 |  |  |
Damages from Product Defects |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Additional litigation reserve | 17,500,000 |  |  |
CHINA |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Property, Plant and Equipment, Net | $ 199,000,000 |  |  |
Number of facilities | Facility | 5 |  |  |
Number of facilities under construction | Facility | 1 |  |  |
Guangzhou Flavors Plant | CHINA |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Property, Plant and Equipment, Net | $ 66,000,000 |  |  |
Zhejiang Ingredients Plant |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Gain Contingency, Expected Relocation Payments |  |  | 50,000,000 |
Gain Contingency, Relocation Payments Received | 0 |  | $ 15,000,000 |
Zhejiang Ingredients Plant | CHINA |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Property, Plant and Equipment, Net | 20,000,000 |  |  |
Minimum |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Estimation of possible loss | 0 |  |  |
Maximum |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Estimation of possible loss | 10,000,000 |  |  |
Amended credit facility | Citibank, N.A. |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 912,300,000 |  |  |

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