Debt Instrument, Covenant Compliance, Ratio Of Net Debt To Credit Adjusted EBITDA With Step-Downs Over Time

No definition available.

Name:	iff_DebtInstrumentCovenantComplianceRatioOfNetDebtToCreditAdjustedEBITDAWithStepDownsOverTime
Namespace Prefix:	iff_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow due to repaying amounts borrowed by issuing commercial paper.

+ References

+ Details

Name:	us-gaap_RepaymentsOfCommercialPaper
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

Name:	us-gaap_RepaymentsOfLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=iff_TermLoanCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=iff_CitibankN.AMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=iff_HealthWrightProductsIncHealthWrightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Event (Details) $ in Millions			9 Months Ended
Subsequent Event (Details) $ in Millions	Aug. 04, 2022	Jul. 06, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Apr. 01, 2022
Subsequent Event [Line Items]
Repayments of Commercial Paper			$ 4,845	$ 0
Term loan credit agreement \| Maximum
Subsequent Event [Line Items]
Maximum ratio of net debt to EBITDA with step-downs over time	4.50
Term loan credit agreement \| Minimum
Subsequent Event [Line Items]
Maximum ratio of net debt to EBITDA with step-downs over time	3.50
Amended credit facility \| Citibank, N.A.
Subsequent Event [Line Items]
Repayments of Lines of Credit		$ 350
Amended credit facility \| Citibank, N.A. \| Maximum
Subsequent Event [Line Items]
Maximum ratio of net debt to EBITDA with step-downs over time	4.50
Amended credit facility \| Citibank, N.A. \| Minimum
Subsequent Event [Line Items]
Maximum ratio of net debt to EBITDA with step-downs over time	3.50
Health Wright Products, Inc. (“Health Wright”)
Subsequent Event [Line Items]
Percentage of voting interest acquired					100.00%