0000051253 2026-04-29 2026-04-29 0000051253 us-gaap:CommonStockMember 2026-04-29 2026-04-29 0000051253 iff:One800SeniorNotesDue2026Member 2026-04-29 2026-04-29 false 0000051253 8-K 2026-04-29 INTERNATIONAL FLAVORS & FRAGRANCES INC NY 1-4858 13-1432060 521 West 57th Street New York NY 10019 212 765-5500 false false false false Common Stock, par value 12 1/2¢ per share IFF NYSE 1.800% Senior Notes due 2026 IFF 26 NYSE false