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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2024
Feb. 24, 2025
Jun. 30, 2024
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-4858    
Entity Registrant Name INTERNATIONAL FLAVORS & FRAGRANCES INC    
Entity Central Index Key 0000051253    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Incorporation, State or Country Code NY    
Entity Tax Identification Number 13-1432060    
Entity Address, Address Line One 521 West 57th Street    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10019-2960    
City Area Code 212    
Local Phone Number 765-5500    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 24,341,101,827
Entity Common Stock, Shares Outstanding   255,714,083  
Documents Incorporated by Reference
Portions of the registrant’s proxy statement for the 2025 Annual Meeting of Shareholders (the “IFF 2025 Proxy Statement”) are incorporated by reference in Part III of this Form 10-K.
    
Document Financial Statement Error Correction [Flag] false    
Other Address      
Entity Information [Line Items]      
Entity Address, Address Line One 200 Powder Mill Road    
Entity Address, City or Town Wilmington    
Entity Address, State or Province DE    
Entity Address, Postal Zip Code 19803-2907    
Common stock      
Entity Information [Line Items]      
Title of 12(b) Security Common Stock, par value 12 1/2¢ per share    
Trading Symbol IFF    
Security Exchange Name NYSE    
1.800% Senior Notes Due 2026 [Member]      
Entity Information [Line Items]      
Title of 12(b) Security 1.800% Senior Notes due 2026    
Trading Symbol IFF 26    
Security Exchange Name NYSE