CONTINGENCIES (Details)	6 Months Ended
Jun. 30, 2011
CONTINGENCIES
Minimum number of lawsuits that could have material impact on the liquidity, results of operations, or financial condition	1

Name:

iaci_LossContingencyMinimumNumberOfLawsuitsThatCouldHaveAMaterialImpact

Namespace Prefix:

iaci

Data Type:

xbrli:integerItemType

Balance Type:

na

Period Type:

duration