XML 57 R48.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Net Income Per Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 15, 2021 | Sep. 17, 2018 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Sep. 14, 2021
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |
Dividends declared per share, in dollars per share |  |  | $ 0.81 | $ 0.79 | $ 2.39 | $ 2.33 |  |
Tangible equity units issued |  | 16,500,000 |  |  |  |  |  |
Tangible equity units proceeds |  | $ 800 |  |  |  |  |  |
Shares issued during period | 5,460,031 |  |  |  |  |  |  |
Difference between basic and diluted net income per share, in dollars per share |  |  |  | $ 0.01 |  | $ 0.01 |  |
Common stock, par value, in dollars per share |  |  | $ 0.125 |  | $ 0.125 |  | $ 0.125 |
Tangible Equity Units Final Settlement Rate |  |  |  |  |  |  |  | $ 0.330911
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  | 300,000 |  | 400,000 |  |  |

X
- Definition Participating Securities, Distributed and Undistributed Earnings (Loss), Difference Between Basic And Diluted Net Income Per Share + References No definition available. + Details
Name: | iff_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDifferenceBetweenBasicAndDilutedNetIncomePerShare
Namespace Prefix: | iff_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tangible Equity Units Final Settlement Rate + References No definition available. + Details
Name: | iff_TangibleEquityUnitsFinalSettlementRate
Namespace Prefix: | iff_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Tangible Equity Units Issued + References No definition available. + Details
Name: | iff_TangibleEquityUnitsIssued
Namespace Prefix: | iff_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tangible Equity Units Proceeds + References No definition available. + Details
Name: | iff_TangibleEquityUnitsProceeds
Namespace Prefix: | iff_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration