Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 21, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	1-4858
Entity Registrant Name	INTERNATIONAL FLAVORS & FRAGRANCES INC
Entity Central Index Key	0000051253
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
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 Stree
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			$ 37,208,150,825
Entity Common Stock, Shares Outstanding		254,684,699
Documents Incorporated by Reference	Portions of the registrant’s proxy statement for the 2022 Annual Meeting of Shareholders (the “IFF 2022 Proxy Statement”) are incorporated by reference in Part III of this Form 10-K.
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 [Member]
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
1.750% Senior Notes Due 2024 [Member]
Entity Information [Line Items]
Title of 12(b) Security	1.750% Senior Notes due 2024
Trading Symbol	IFF 24
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