Loss Contingency, Number Of Plaintiffs Who Filed A Notice Of Discontinuance Of Their Claims Without Prejudice

No definition available.

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- Definition

Loss Contingency, Number of Plaintiffs Granted Motion to Dismiss Merger-Related Claim for Breach of Contract

+ References

No definition available.

+ Details

Name:	iac_LossContingencyNumberofPlaintiffsGrantedMotiontoDismissMergerRelatedClaimforBreachofContract
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- Definition

Number of Lawsuits with Possible Material Impact

+ References

No definition available.

+ Details

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Namespace Prefix:	iac_
Data Type:	xbrli:integerItemType
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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

Name:	us-gaap_LossContingencyDamagesSoughtValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Details

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CONTINGENCIES - Narrative (Details)	Jun. 13, 2019 plaintiff	Aug. 31, 2018 plaintiff	Aug. 14, 2018 USD ($) plaintiff	Mar. 31, 2020 USD ($) lawsuit
Loss Contingencies [Line Items]
Loss contingency reserve \| $				$ 0
Number of lawsuits with possible material impact (one or more) \| lawsuit				1
Tinder Optionholder Litigation
Loss Contingencies [Line Items]
Number of plaintiffs	6	6	10
Number of plaintiffs who filed a notice of discontinuance of their claims without prejudice		4
Number of plaintiffs that were granted motion to dismiss merger-related claim for breach of contract	2
Tinder Optionholder Litigation \| Pending Litigation
Loss Contingencies [Line Items]
Damages sought \| $			$ 2,000,000,000