Cover
Cover - USD ($) | 12 Months Ended | ||
Dec. 31, 2019 | Jan. 31, 2020 | Jun. 30, 2019 | |
Document Information [Line Items] | |||
Document Type | 10-K/A | ||
Amendment Flag | true | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Dec. 31, 2019 | ||
Document Fiscal Period Focus | FY | ||
Document Fiscal Year Focus | 2019 | ||
Current Fiscal Year End Date | --12-31 | ||
Entity File Number | 000-20570 | ||
Entity Registrant Name | IAC/INTERACTIVECORP | ||
Entity Central Index Key | 0000891103 | ||
Entity Tax Identification Number | 59-2712887 | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Address, Address Line One | 555 West 18th Street | ||
Entity Address, City or Town | New York | ||
Entity Address, State or Province | NY | ||
Entity Address, Postal Zip Code | 10011 | ||
City Area Code | 212 | ||
Local Phone Number | 314-7300 | ||
Title of 12(b) Security | Common Stock, par value $0.001 | ||
Trading Symbol | IAC | ||
Security Exchange Name | NASDAQ | ||
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 | ||
Entity Shell Company | false | ||
Entity Public Float | $ 16,892,708,488 | ||
Common Class A [Member] | |||
Document Information [Line Items] | |||
Entity Common Stock, Shares Outstanding | 78,970,141 | ||
Common Class B [Member] | |||
Document Information [Line Items] | |||
Entity Common Stock, Shares Outstanding | 5,789,499 |