v2.4.0.8

CONTINGENCIES (Details)	6 Months Ended
	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