v2.4.0.8

CONTINGENCIES (Details) | 6 Months Ended
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Jun. 30, 2013 lawsuit
Loss Contingency [Abstract] |
Minimum number of lawsuits that could have material impact on the liquidity, results of operations, or financial condition | 1

X
- Definition Represents the minimum number of lawsuits or other contingencies that could have a material impact on the liquidity, results of operations, or financial condition of the entity. + References No definition available. + Details
Name: | iaci_LossContingencyMinimumNumberOfLawsuitsThatCouldHaveMaterialImpact
Namespace Prefix: | iaci_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingencyAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration