v2.4.0.6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 M | Dec. 31, 2010 M | Dec. 31, 2009 M
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |
Number of variable interest entities in which entity is primary beneficiary | 1 |  |
Match |  |  |
Deferred revenue |  |  |
Deferred revenue | $ 94.9 | $ 57.4 |
Match | Minimum |  |  |
Deferred revenue |  |  |
Revenue recognition period (in months) | 1 |  |
Match | Maximum |  |  |
Deferred revenue |  |  |
Revenue recognition period (in months) | 6 |  |
Local |  |  |
Deferred revenue |  |  |
Revenue recognition period (in months) | 24 | 24 | 36
Deferred revenue | $ 3.8 | $ 5.0 |

X
- Definition Represents the period over which deferred revenue is recognized. + References No definition available. + Details
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Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of variable interest entities, in which the entity has a controlling financial interest through voting rights and is also the primary beneficiary. + References No definition available. + Details
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Namespace Prefix: | iaci_
Data Type: | xbrli:integerItemType
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X
- Details
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X
- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response) -URI http://asc.fasb.org/extlink&oid=6600647&loc=d3e214044-122780 + Details
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- Details
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