FUNDS HELD IN ESCROW FOR MEETIC TENDER OFFER (Details)		1 Months Ended
Jun. 30, 2011 USD ($)	Jul. 31, 2011 Meetic EUR (€)	Jul. 08, 2011 Meetic USD ($)
Funds held in escrow for tender offer
Offer price for shares of Meetic S.A. under public tender offer (in euros per share)		€ 15.00
Percentage of shares not already owned to be purchased with funds in escrow account (as a percent)		100.00%
Funds in escrow account	$ 360,583,000		$ 360,583,000
Percentage of equity method investment remaining to be purchased (as a percent)			73.00%

The percentage of ownership remaining to be acquired of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Details

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Period Type:	duration

- Definition

Represents the percentage of shares to be purchased with funds in escrow account that are not already owned by the entity.

+ Details

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Namespace Prefix:	iaci
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the offer price per share by the entity under the public tender offer.

+ Details

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Balance Type:	na
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- Definition

Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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