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Goodwill and Other Intangible Assets, Net - Schedule of Goodwill by Operating Segment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Goodwill [Line Items]        
Goodwill $ 5,593,252 $ 5,497,596 $ 5,378,388 $ 1,156,288
Flavors [Member]        
Goodwill [Line Items]        
Goodwill 4,859,531 4,788,988    
Fragrances [Member]        
Goodwill [Line Items]        
Goodwill $ 733,721 $ 708,608