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Restructuring and Other Charges - Movements in Restructuring and Related Accruals (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring Reserve [Roll Forward] |  |  |
Balance | $ 5,200 | $ 7,957 | $ 3,277
Additional Charges (Reversals), Net | 29,765 | 5,079 | 19,711
Non-Cash Charges | (679) | (418) | (528)
Cash Payments | (13,201) | (7,418) | (14,503)
Balance | 21,085 | 5,200 | 7,957
Additional charges, net | 29,765 | 5,079 | 19,711
Taste [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Additional charges, net | 10,045 | 1,646 | 4,505
Scent [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Additional charges, net | 12,093 | 3,433 | 13,077
Shared IT & Corporate Costs [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Additional charges, net | 7,627 | 0 | 2,129
2015 Severance Initiatives [Member] | Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance |  | 0 | 3,277
Additional Charges (Reversals), Net |  |  | (2,311)
Non-Cash Charges |  |  | 0
Cash Payments |  |  | (966)
Balance |  |  | 0
Frutarom Integration Initiative [Member] | Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0 |  |
Additional Charges (Reversals), Net | 6,110 |  |
Non-Cash Charges | 0 |  |
Cash Payments | (2,072) |  |
Balance | 4,038 | 0 |
Additional charges, net | 10,400 |  |
Frutarom Integration Initiative [Member] | Fixed asset write down |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0 |  |
Additional Charges (Reversals), Net | 534 |  |
Non-Cash Charges | (534) |  |
Cash Payments | 0 |  |
Balance | 0 | 0 |
Frutarom Integration Initiative [Member] | Other |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0 |  |
Additional Charges (Reversals), Net | 3,726 |  |
Non-Cash Charges | (145) |  |
Cash Payments | (1,096) |  |
Balance | 2,485 | 0 |
2019 Severance Initiatives [Member] | Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0 |  |
Additional Charges (Reversals), Net | 20,871 |  |
Non-Cash Charges | 0 |  |
Cash Payments | (7,974) |  |
Balance | 12,897 | 0 |
Additional charges, net | 21,300 |  |
2019 Severance Initiatives [Member] | Other |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0 |  |
Additional Charges (Reversals), Net | 471 |  |
Non-Cash Charges | 0 |  |
Cash Payments | 0 |  |
Balance | 471 | 0 |
2017 Productivity Program [Member] |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Additional charges, net |  |  | 24,500
2017 Productivity Program [Member] | Severance |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 4,125 | 7,539 | 0
Additional Charges (Reversals), Net | (1,947) | 3,884 | 20,620
Non-Cash Charges | 0 | 0 | 0
Cash Payments | (1,072) | (7,298) | (13,081)
Balance | 1,106 | 4,125 | 7,539
2017 Productivity Program [Member] | Other |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 1,075 | 418 | 0
Additional Charges (Reversals), Net | 0 | 1,195 | 1,402
Non-Cash Charges | 0 | (418) | (528)
Cash Payments | (987) | (120) | (456)
Balance | $ 88 | $ 1,075 | $ 418

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