v2.4.0.6

RELATED PARTY TRANSACTIONS (Details) | Dec. 31, 2011
--- | ---
RELATED PARTY TRANSACTIONS |
Ownership interest held by each of the Company and Expedia in aircraft (as a percent) | 50.00%
Ownership interest held by each of the Company and Expedia in an entity employing aircraft flight crew (as a percent) | 50.00%

X
- Definition Represents the percentage of ownership interest in an aircraft that is held by the entity and a similar percentage of ownership that is held by the related party. + References No definition available. + Details
Name: | iaci_PercentageOfOwnershipInterestHeldEachByEntityAndByRelatedPartyInAircraft
Namespace Prefix: | iaci_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of ownership interest in another entity employing aircraft flight crew that is held by the reporting entity and a similar percentage of ownership that is held by the related party. + References No definition available. + Details
Name: | iaci_PercentageOfOwnershipInterestHeldEachByEntityAndByRelatedPartyInAnotherEntityEmployingFlightCrew
Namespace Prefix: | iaci_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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