$MTCH
Match Group, Inc. Stock $mtch

$mtch Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 8-K Financial Statement

#000104746912011266 Filed on December 17, 2012

Income Statement

Concept	2011 Q4	2010 Q4	2010 Q3
Revenue	$596.9M	$451.4M	$413.0M
YoY Change	32.23%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit	$55.46M	-$21.45M	$37.68M
YoY Change	-358.57%
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income
YoY Change
Income Tax
% Of Pretax Income
Net Earnings	$46.16M	$83.20M	$17.65M
YoY Change	-44.51%
Net Earnings / Revenue	7.73%	18.43%	4.27%
Basic Earnings Per Share	$0.58	-$0.90	$0.17
Diluted Earnings Per Share	$0.53	-$0.90	$0.16
COMMON SHARES
Basic Shares Outstanding		100.4M shares	104.6M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2011 Q4	2010 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$865.2M
YoY Change
Cash & Equivalents	$704.2M	$742.1M
Short-Term Investments	$161.0M
Other Short-Term Assets	$112.3M	$118.3M
YoY Change	-5.12%
Inventory
Prepaid Expenses	$19.77M	$14.56M
Receivables	$177.0M	$119.6M
Other Receivables
Total Short-Term Assets	$1.159B	$1.544B
YoY Change	-24.93%
LONG-TERM ASSETS
Property, Plant & Equipment	$259.6M	$267.9M
YoY Change	-3.11%
Goodwill	$1.359B	$989.5M
YoY Change	37.29%	2.25%
Intangibles	$378.1M	$245.0M
YoY Change	54.3%
Long-Term Investments	$2.687M	$148.6M
YoY Change	-98.19%
Other Assets	$80.76M	$81.91M
YoY Change	-1.4%
Total Long-Term Assets	$2.251B	$1.785B
YoY Change	26.08%
TOTAL ASSETS
Total Short-Term Assets	$1.159B	$1.544B
Total Long-Term Assets	$2.251B	$1.785B
Total Assets	$3.410B	$3.329B
YoY Change	2.43%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$534.2M	$356.9M
YoY Change	49.68%
LONG-TERM LIABILITIES
Long-Term Debt	$95.84M	$95.84M
YoY Change	0.0%
Other Long-Term Liabilities	$16.60M	$20.24M
YoY Change	-17.98%
Total Long-Term Liabilities	$112.4M	$116.1M
YoY Change	-3.13%
TOTAL LIABILITIES
Total Short-Term Liabilities	$534.2M	$356.9M
Total Long-Term Liabilities	$112.4M	$116.1M
Total Liabilities	$646.6M	$473.0M
YoY Change	36.72%
SHAREHOLDERS EQUITY
Retained Earnings	-$477.8M	-$652.0M
YoY Change	-26.72%
Common Stock	$11.28B	$11.05B
YoY Change	2.1%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$8.885B	$8.364B
YoY Change	6.24%
Treasury Stock Shares	182.9M shares	153.7M shares
Shareholders Equity	$1.905B	$2.050B
YoY Change
Total Liabilities & Shareholders Equity	$3.410B	$3.329B
YoY Change	2.43%

Cashflow Statement

Concept	2011 Q4	2010 Q4	2010 Q3
OPERATING ACTIVITIES
Net Income	$46.16M	$83.20M	$17.65M
YoY Change	-44.51%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities
YoY Change
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities
YoY Change
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities
YoY Change
NET CHANGE
Cash From Operating Activities
Cash From Investing Activities
Cash From Financing Activities
Net Change In Cash
YoY Change
FREE CASH FLOW
Cash From Operating Activities
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2009	iaci	Issuance Of Common Stock Net Of Withholding Taxes IssuanceOfCommonStockNetOfWithholdingTaxes	151933000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	14291000	USD
CY2009	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	796000	USD
CY2009	iaci	Payment Of Settlement Of Vested Stock Based Awards PaymentOfSettlementOfVestedStockBasedAwards	14331000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	79000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1294000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-717210000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-405797000	USD
CY2010	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-494599000	USD
CY2009	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-479890000	USD
CY2010	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-7545000	USD
CY2009	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-24708000	USD
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1754000	USD
CY2009	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	5601000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-503898000	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-498997000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1245997000	USD
CY2008Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1744994000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	175569000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	372386000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-25186000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-372233000	USD
CY2011	us-gaap	Nature Of Operations NatureOfOperations	<table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> <table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman',times,serif"> <tr> <td> <table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman',times,serif"> <tr> <td> <p style="FONT-FAMILY: times"><font size="2"><b>NOTE 1—ORGANIZATION </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        IAC is a leading media and internet company comprised of more than 150 brands and products, including Match.com, Ask.com, CollegeHumor.com, and CityGrid Media. Focused in the areas of search, personals, local and media, IAC's family of websites is one of largest in the world, with 1.2 billion monthly visits across more than 30 countries. IAC includes the businesses comprising its Search & Applications, Match, Local, Media and Other segments, as well as investments in unconsolidated affiliates. </font></p> <p style="FONT-FAMILY: times"><font size="2">        All references to "IAC," the "Company," "we," "our" or "us" in this report are to IAC/InterActiveCorp. </font></p> <p style="FONT-FAMILY: times">        During the first and second quarters of 2012, the Company renamed and realigned its reportable segments. Search was renamed "Search & Applications". The Media & Other segment was separated into a "Media" segment and an "Other" segment. The Company created a new segment called "Local" that includes HomeAdvisor (formerly ServiceMagic), which was previously reported as its own separate segment, and CityGrid Media, which was previously included in the Search & Applications segment. In addition, DailyBurn was moved from the Search & Applications segment to the Media segment and Pronto was moved from the Media & Other segment to the Search & Applications segment. Certain amounts related to the reportable segments have been reclassified to reflect the above-mentioned presentation. </p> <p style="FONT-FAMILY: times"><font size="2"><b>Search & Applications </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Our Search & Applications segment consists of Websites and Applications. Websites includes Ask.com, Pronto and Dictionary.com, excluding downloadable applications related to the aforementioned sites. Applications includes our direct to consumer applications business (B2C) and partnership operations (B2B), as well as downloadable applications related to Ask.com and Dictionary.com. </font></p> <p style="FONT-FAMILY: times"><font size="2"><b>Match </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Through the brands and businesses within our Match segment, we are a leading provider of subscription-based and advertiser-supported online personals services in the United States and various jurisdictions abroad. We provide these services through websites that we own and operate, as well as through our mobile applications. Through Match, we own an 81% stake in Meetic S.A. ("Meetic"), a European online dating company based in France. See Note 5 for additional information related to the Meetic acquisition. </font></p> <p style="FONT-FAMILY: times"><font size="2"><b>Local </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Our Local segment consists of HomeAdvisor (formerly ServiceMagic) and CityGrid Media. HomeAdvisor is a leading online marketplace in the United States that connects consumers, by way of patented proprietary technologies, with home and other local service professionals, all of which are pre-screened and the majority of which are customer-rated. Through HomeAdvisor International, we operate businesses in the local lead generation space in France and the United Kingdom. CityGrid Media is an online media company that aggregates and integrates local content and advertising for distribution to publishers across web and mobile platforms. </font></p> <p style="FONT-FAMILY: times"><font size="2"><b>Media </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Our Media segment consists primarily of Electus, Connected Ventures (which operates CollegeHumor Media and Notional) and Vimeo. </font></p> <p style="FONT-FAMILY: times"><font size="2"><b>Other </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Our Other segment consists primarily of Shoebuy and Hatch Labs. </font></p> <p style="FONT-FAMILY: times"><font size="2"><b>Discontinued Operations </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        On December 1, 2010, IAC exchanged (on a tax-free basis) the stock of a wholly-owned subsidiary that held our Evite, Gifts.com and IAC Advertising Solutions businesses and $217.9 million in cash for substantially all of Liberty Media Corporation's ("Liberty") equity stake in IAC (the "Liberty Exchange"). See Note 12 for additional information related to this exchange. In addition, during the fourth quarter of 2010, InstantAction ceased operations. Evite, Gifts.com and InstantAction were previously reported in IAC's former Media & Other segment. IAC Advertising Solutions was previously reported in IAC's former Search segment through December 31, 2009 and IAC's former Media & Other segment for the year ended December 31, 2010.</font></p></td></tr></table></td></tr></table></td></tr></table>
CY2010Q4	iaci	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	222323000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	25130000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	31000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	10518000	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	539598000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1960140000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3409865000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7309000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	8848000	USD
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	167342069	shares
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	153663130	shares
CY2008Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4046671000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	69629000	USD
CY2009	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7431000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-11737000	USD
CY2009	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	152694000	USD
CY2009	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	554203000	USD
CY2009	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-1033000	USD
CY2009	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	545489000	USD
CY2010	iaci	Issuance Of Common Stock Net Of Withholding Taxes IssuanceOfCommonStockNetOfWithholdingTaxes	25939000	USD
CY2009	iaci	Adjustments To Additional Paid In Capital Settlement Of Vested Stock Based Awards Denominated In Subsidiaries Equity Net Of Tax AdjustmentsToAdditionalPaidInCapitalSettlementOfVestedStockBasedAwardsDenominatedInSubsidiariesEquityNetOfTax	-10044000	USD
CY2009	iaci	Adjustments For Spinoff Of Discontinued Businesses AdjustmentsForSpinoffOfDiscontinuedBusinesses	-4052000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2746961000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	85048000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	30933000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-12237000	USD
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	530885000	USD
CY2010	iaci	Stock Exchange During Period Value StockExchangeDuringPeriodValue	364169000	USD
CY2010	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	2059000	USD
CY2010	iaci	Adjustments To Additional Paid In Capital Settlement Of Vested Stock Based Awards Denominated In Subsidiaries Equity Net Of Tax AdjustmentsToAdditionalPaidInCapitalSettlementOfVestedStockBasedAwardsDenominatedInSubsidiariesEquityNetOfTax	-44000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	88588000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	84280000	USD
CY2009	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	70081000	USD
CY2010	us-gaap	Revenues Revenues	1636815000	USD
CY2009	us-gaap	Revenues Revenues	1346695000	USD
CY2010	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	492206000	USD
CY2009	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	463439000	USD
CY2010	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	316500000	USD
CY2009	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	57843000	USD
CY2010	us-gaap	Depreciation Depreciation	63897000	USD
CY2009	us-gaap	Depreciation Depreciation	61391000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	27472000	USD
CY2009	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	157031000	USD
CY2010	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	28032000	USD
CY2009	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	916868000	USD
CY2010	us-gaap	Costs And Expenses CostsAndExpenses	1587020000	USD
CY2009	us-gaap	Costs And Expenses CostsAndExpenses	2384682000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	49795000	USD
CY2009	us-gaap	Operating Income Loss OperatingIncomeLoss	-1037987000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-25676000	USD
CY2009	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-14014000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	22686000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-946999000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32079000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9474000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-9393000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-956473000	USD
CY2009	us-gaap	Profit Loss ProfitLoss	-979912000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-5007000	USD
CY2009	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1090000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.04
CY2009	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-6.89
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.04
CY2009	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-6.89
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.93
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.06
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.93
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.06
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2656000	USD
CY2010Q1	iaci	Equity Interest Percentage Each Party EquityInterestPercentageEachParty	0.50	pure
CY2011	us-gaap	Profit Loss ProfitLoss	171577000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	1861682000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	103745000	USD
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-23439000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6074000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	27707000	USD
CY2009	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18121000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8636000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	742099000	USD
CY2010Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	563997000	USD
CY2010Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	119581000	USD
CY2010Q4	us-gaap	Other Assets Current OtherAssetsCurrent	118308000	USD
CY2010Q4	us-gaap	Assets Current AssetsCurrent	1543985000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	267928000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	989493000	USD
CY2010Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	245044000	USD
CY2010Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	81908000	USD
CY2010Q4	us-gaap	Assets Assets	3329079000	USD
CY2010Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	56375000	USD
CY2010Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	78175000	USD
CY2010Q4	us-gaap	Liabilities Current LiabilitiesCurrent	356873000	USD
CY2010Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	95844000	USD
CY2010Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	475685000	USD
CY2010Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	20239000	USD
CY2010Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	59869000	USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2010Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	11047884000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-652018000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	17546000	USD
CY2010Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8363586000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	2050068000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2050068000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3329079000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	55091000	USD
CY2011Q4	us-gaap	Assets Assets	3409865000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	534185000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	1159133000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	1905049000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6458000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-3922000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	54188000	USD
CY2009	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	18825000	USD
CY2010	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	76749000	USD
CY2009	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	109009000	USD
CY2010	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	19653000	USD
CY2009	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	14238000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-13909000	USD
CY2009	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-9697000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	340707000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	348547000	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	17333000	USD
CY2009	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	85534000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	39829000	USD
CY2009	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	33938000	USD
CY2010	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	763326000	USD
CY2009	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	229583000	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	838155000	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	586274000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	5324000	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	64046000	USD
CY2010	us-gaap	Payments To Acquire Longterm Investments PaymentsToAcquireLongtermInvestments	2283000	USD
CY2009	us-gaap	Payments To Acquire Longterm Investments PaymentsToAcquireLongtermInvestments	6482000	USD
CY2010	iaci	Equity Method Investment Dividends Or Distributions Investing EquityMethodInvestmentDividendsOrDistributionsInvesting	11355000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	501000	USD
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4041000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-118096000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	94352000	USD
CY2009	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	132244000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	3989000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	28835000	USD
CY2009	us-gaap	Increase Decrease In Fair Value Of Unhedged Derivative Instruments IncreaseDecreaseInFairValueOfUnhedgedDerivativeInstruments	-58097000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	32901000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-422640000	USD
CY2009	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	26800000	USD
CY2011Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	107800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	84543000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	57016000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	22490000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	243547000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition	2.1	year
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	45084000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	42372000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	12414000	USD
CY2010Q4	us-gaap	Equity Method Investments EquityMethodInvestments	148607000	USD
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2687000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	42527000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	45852000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	47085000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	11044000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	368433000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Gross Profit Loss EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss	105749000	USD
CY2010Q4	us-gaap	Costmethod Investments Other Than Temporary Impairment CostmethodInvestmentsOtherThanTemporaryImpairment	7800000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	600149000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2482000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	41000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	768650000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	4802000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	19000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	293629000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	95844000	USD
CY2011Q4	iaci	Long Term Debt Maturities Repayments Of Principal In Year2035 LongTermDebtMaturitiesRepaymentsOfPrincipalInYear2035	80000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	246000	USD
CY2011	iaci	Share Based Compensation Arrangement By Share Based Payment Award Number Of Active Plans ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfActivePlans	2	plan
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	32700000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	32200000	USD
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CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	28899000	USD
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CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	8496000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	31436000	USD
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CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	639000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-12829000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-35483000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	20603000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2083000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27271000	USD
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CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3097000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	38153000	USD
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CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	9560000	USD
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CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	35432000	USD
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CY2011Q4	iaci	Unrecognized Tax Benefits Included In Noncurrent Income Tax Payable UnrecognizedTaxBenefitsIncludedInNoncurrentIncomeTaxPayable	450500000	USD
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CY2010Q4	iaci	Unrecognized Tax Benefits That Would Impact Effective Tax Rate Continuing Operations UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRateContinuingOperations	103100000	USD
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CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	37000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	73723000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	246000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	22209000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	19515000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	15494000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	13685000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	13287000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	196098000	USD
CY2010	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	31100000	USD
CY2009	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	26400000	USD
CY2011	iaci	Loss Contingency Minimum Number Of Lawsuits That Could Have A Material Impact LossContingencyMinimumNumberOfLawsuitsThatCouldHaveAMaterialImpact	1	lawsuit
CY2011	iaci	Operating Leases Most Significant Operating Lease Period OperatingLeasesMostSignificantOperatingLeasePeriod	77	year
CY2011	iaci	Operating Leases Most Significant Operating Lease Percentage OperatingLeasesMostSignificantOperatingLeasePercentage	0.66	pure
CY2011	iaci	Defined Contribution Plan Employer Matching Contribution Per Dollar Of Employee Contribution DefinedContributionPlanEmployerMatchingContributionPerDollarOfEmployeeContribution	0.50	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4047000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	38300000	USD
CY2011Q4	iaci	Unrecognized Tax Benefits That Would Impact Income Tax Expense Continuing Operations UnrecognizedTaxBenefitsThatWouldImpactIncomeTaxExpenseContinuingOperations	89500000	USD
CY2011Q4	iaci	Unrecognized Tax Benefits That Would Impact Income Tax Expense Discontinued Operations UnrecognizedTaxBenefitsThatWouldImpactIncomeTaxExpenseDiscontinuedOperations	213600000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	12731000	USD
CY2010Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	19831000	USD
CY2010Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	14560000	USD
CY2010Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	33192000	USD
CY2011Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	7728000	USD
CY2011Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	19769000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12443000	USD
CY2011Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	26009000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	112255000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	467374000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	199446000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	477669000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	218081000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	259588000	USD
CY2010Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	56675000	USD
CY2010Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	25233000	USD
CY2011Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	58870000	USD
CY2011Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	21891000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	80761000	USD
CY2010Q4	iaci	Accrued Revenue Share Expense Current AccruedRevenueShareExpenseCurrent	58097000	USD
CY2010Q4	us-gaap	Accrued Advertising Current AccruedAdvertisingCurrent	43418000	USD
CY2010Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	63930000	USD
CY2011Q4	iaci	Accrued Revenue Share Expense Current AccruedRevenueShareExpenseCurrent	80434000	USD
CY2011Q4	us-gaap	Accrued Advertising Current AccruedAdvertisingCurrent	68782000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	110582000	USD
CY2011Q4	iaci	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	343490000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	5779000	USD
CY2011	iaci	Redeemable Noncontrolling Interest Contribution From Owners Of Noncontrolling Interest RedeemableNoncontrollingInterestContributionFromOwnersOfNoncontrollingInterest	199000	USD
CY2011	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	239000	USD
CY2011	iaci	Redeemable Noncontrolling Interest Change In Fair Value Of Redeemable Noncontrolling Interest RedeemableNoncontrollingInterestChangeInFairValueOfRedeemableNoncontrollingInterest	4273000	USD
CY2011	iaci	Redeemable Noncontrolling Interest Change In Foreign Currency Translation Adjustment RedeemableNoncontrollingInterestChangeInForeignCurrencyTranslationAdjustment	-2968000	USD
CY2011	iaci	Redeemable Noncontrolling Interest Other RedeemableNoncontrollingInterestOther	-1990000	USD
CY2010	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	5007000	USD
CY2010	iaci	Redeemable Noncontrolling Interest Change In Fair Value Of Redeemable Noncontrolling Interest RedeemableNoncontrollingInterestChangeInFairValueOfRedeemableNoncontrollingInterest	-2059000	USD
CY2010	iaci	Redeemable Noncontrolling Interest Change In Foreign Currency Translation Adjustment RedeemableNoncontrollingInterestChangeInForeignCurrencyTranslationAdjustment	-267000	USD
CY2010	iaci	Redeemable Noncontrolling Interest Other RedeemableNoncontrollingInterestOther	-390000	USD
CY2010	iaci	Redeemable Noncontrolling Interest Contribution From Owners Of Noncontrolling Interest RedeemableNoncontrollingInterestContributionFromOwnersOfNoncontrollingInterest	79000	USD
CY2009	iaci	Redeemable Noncontrolling Interest Contribution From Owners Of Noncontrolling Interest RedeemableNoncontrollingInterestContributionFromOwnersOfNoncontrollingInterest	1750000	USD
CY2009	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	1090000	USD
CY2009	iaci	Redeemable Noncontrolling Interest Change In Fair Value Of Redeemable Noncontrolling Interest RedeemableNoncontrollingInterestChangeInFairValueOfRedeemableNoncontrollingInterest	1033000	USD
CY2009	iaci	Redeemable Noncontrolling Interest Change In Foreign Currency Translation Adjustment RedeemableNoncontrollingInterestChangeInForeignCurrencyTranslationAdjustment	371000	USD
CY2008Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	22771000	USD
CY2009Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	28180000	USD
CY2011Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	50349000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	16027000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1519000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-25174000	USD
CY2010	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	1522217000	USD
CY2009	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	1240787000	USD
CY2011	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	1932289000	USD
CY2010	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	114598000	USD
CY2009	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	105908000	USD
CY2011	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	127155000	USD
CY2011	us-gaap	Revenues Revenues	2059444000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	58231000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	165035000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	697000	USD
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	560661000	USD
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	3582000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	68375000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	68545000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	92004000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	160379000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	92483000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	161028000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	6517000	USD
CY2009	us-gaap	Investment Income Interest InvestmentIncomeInterest	10218000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	5205000	USD
CY2010	us-gaap	Interest Expense InterestExpense	5404000	USD
CY2009	us-gaap	Interest Expense InterestExpense	5823000	USD
CY2011	us-gaap	Interest Expense InterestExpense	5430000	USD
CY2011	iaci	Non Income Tax Refund Related To Sale Of Portion Of Disposal Group Not Discontinued Operation NonIncomeTaxRefundRelatedToSaleOfPortionOfDisposalGroupNotDiscontinuedOperation	4630000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	314000	USD
CY2009	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1228000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3660000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	178225000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-4386000	USD
CY2009	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-955383000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-3992000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.97
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.97
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.17
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.17
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.89
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.04
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.85
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.05
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.01
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	86755000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	94321000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	106274000	shares
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	138599000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	106274000	shares
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	138599000	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	36300000	shares
CY2009	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	36200000	shares
CY2010	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	44698000	USD
CY2010	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	6015000	USD
CY2009Q4	us-gaap	Goodwill Goodwill	967735000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	24605000	USD
CY2011	us-gaap	Use Of Estimates UseOfEstimates	<table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> <p style="FONT-FAMILY: times"><font size="2"><b>Accounting Estimates </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Management of the Company is required to make certain estimates, judgments and assumptions during the preparation of its consolidated financial statements in accordance with U.S. generally accepted accounting principles ("U.S. GAAP"). These estimates, judgments and assumptions impact the reported amounts of assets, liabilities, revenue and expenses and the related disclosure of contingent assets and liabilities. Actual results could differ from those estimates. </font></p> <p style="FONT-FAMILY: times"><font size="2">        On an ongoing basis, the Company evaluates its estimates and judgments including those related to the fair values of marketable securities and other investments, goodwill and indefinite-lived intangible assets, the useful lives and recovery of definite-lived intangible assets and property and equipment, the carrying value of accounts receivable, including the determination of the allowance for doubtful accounts and other revenue related reserves, the reserves for income tax contingencies, the valuation allowance for deferred income tax assets and the fair value of and forfeiture rates for stock-based awards, among others. The Company bases its estimates and judgments on historical experience, its forecasts and budgets and other factors that the Company considers relevant.</font></p></td></tr></table>
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	49204000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	22585000	USD
CY2011	us-gaap	Future Amortization Expense Year One FutureAmortizationExpenseYearOne	18712000	USD
CY2011	us-gaap	Future Amortization Expense Year Two FutureAmortizationExpenseYearTwo	6176000	USD
CY2011	us-gaap	Future Amortization Expense Year Three FutureAmortizationExpenseYearThree	669000	USD
CY2011	us-gaap	Future Amortization Expense Year Four FutureAmortizationExpenseYearFour	607000	USD
CY2011	us-gaap	Finite Lived Intangible Assets Future Amortization Expense FiniteLivedIntangibleAssetsFutureAmortizationExpense	26619000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	37336000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	20168000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	18220000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	45630000	USD
CY2010Q4	iaci	Cost Method Investments Other Than Temporary Impairment Net Of Tax CostMethodInvestmentsOtherThanTemporaryImpairmentNetOfTax	4600000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	43142000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	46740000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	67973000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	64051000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	197762000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.22
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.21
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.50
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.46
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.81
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.73
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
CY2010Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	8925000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-14597000	USD
CY2010Q1	us-gaap	Profit Loss ProfitLoss	-19324000	USD
CY2010Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	24633000	USD
CY2010Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	15421000	USD
CY2010Q2	us-gaap	Profit Loss ProfitLoss	12835000	USD
CY2010Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	37684000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	22440000	USD
CY2010Q3	us-gaap	Profit Loss ProfitLoss	17645000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.12
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.12
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.16
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.16
CY2010Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2010Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.22
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.21
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	39954000	USD
CY2010Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	237021000	USD
CY2010Q4	iaci	Intangible Assets And Goodwill IntangibleAssetsAndGoodwill	1234537000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	1358524000	USD
CY2011Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	351488000	USD
CY2011Q4	iaci	Intangible Assets And Goodwill IntangibleAssetsAndGoodwill	1736631000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	397423000	USD
CY2011	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	-27983000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	16582000	USD
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.15
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.14
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	22057000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	42094000	USD
CY2011	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	3609000	USD
CY2011	iaci	Operating Income Loss Before Amortization OperatingIncomeLossBeforeAmortization	308407000	USD
CY2011	us-gaap	Depreciation Depreciation	56719000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	19311000	USD
CY2010	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	72198000	USD
CY2009	us-gaap	Income Taxes Paid IncomeTaxesPaid	8397000	USD
CY2009	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	136435000	USD
CY2010Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-21447000	USD
CY2010Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-32657000	USD
CY2010Q4	us-gaap	Profit Loss ProfitLoss	83196000	USD
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.30
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.30
CY2010Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.90
CY2010Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.90
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	55455000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	41798000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	46164000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.48
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.53
CY2011Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	165695000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	2800000	USD
CY2011	iaci	Variable Interest Entity Primary Beneficiary Number VariableInterestEntityPrimaryBeneficiaryNumber	1	entity
CY2011	us-gaap	Advertising Expense AdvertisingExpense	497200000	USD
CY2010	us-gaap	Advertising Expense AdvertisingExpense	371200000	USD
CY2009	us-gaap	Advertising Expense AdvertisingExpense	347800000	USD
CY2011	iaci	Number Of Years In Which Put And Call Arrangements Become Exercisable NumberOfYearsInWhichPutAndCallArrangementsBecomeExercisable	5	year
CY2011	iaci	Number Of Put And Call Arrangements That Became Exercisable NumberOfPutAndCallArrangementsThatBecameExercisable	1	arrangement
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	3200000	USD
CY2010Q4	us-gaap	Long Term Investments LongTermInvestments	200721000	USD
CY2011Q4	us-gaap	Long Term Investments LongTermInvestments	173752000	USD
CY2009	iaci	Operating Income Loss Before Amortization OperatingIncomeLossBeforeAmortization	121861000	USD
CY2009	iaci	Amortization Of Non Cash Marketing AmortizationOfNonCashMarketing	15868000	USD
CY2010	iaci	Operating Income Loss Before Amortization OperatingIncomeLossBeforeAmortization	189579000	USD
CY2011	iaci	Percentage Of Directors Elected By Holders Of Common Stock PercentageOfDirectorsElectedByHoldersOfCommonStock	0.25	pure
CY2011Q4	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	14348000	USD
CY2010Q4	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	18297000	USD
CY2010Q4	iaci	Class Of Warrant Or Right Outstanding Weighted Average Strike Price ClassOfWarrantOrRightOutstandingWeightedAverageStrikePrice	28.07
CY2011Q4	iaci	Class Of Warrant Or Right Outstanding Weighted Average Strike Price ClassOfWarrantOrRightOutstandingWeightedAverageStrikePrice	28.40
CY2010	iaci	Class Of Warrant Or Right Number Exercised ClassOfWarrantOrRightNumberExercised	0	shares
CY2009	iaci	Class Of Warrant Or Right Number Exercised ClassOfWarrantOrRightNumberExercised	11600000	shares
CY2011	iaci	Class Of Warrant Or Right Number Exercised ClassOfWarrantOrRightNumberExercised	3949000	shares
CY2011	iaci	Defined Contribution Plan Employee Contribution Limit Percentage Of Compensation DefinedContributionPlanEmployeeContributionLimitPercentageOfCompensation	0.5	pure
CY2011	iaci	Defined Contribution Plan Employer Contribution Limit Percentage Of Compensation DefinedContributionPlanEmployerContributionLimitPercentageOfCompensation	0.03	pure
CY2011	iaci	Defined Contribution Plan Contribution Us Plans DefinedContributionPlanContributionUSPlans	5000000	USD
CY2010	iaci	Defined Contribution Plan Contribution Us Plans DefinedContributionPlanContributionUSPlans	4900000	USD
CY2009	iaci	Defined Contribution Plan Contribution Us Plans DefinedContributionPlanContributionUSPlans	4500000	USD
CY2011	iaci	Defined Contribution Plan Contribution Foreign Plans DefinedContributionPlanContributionForeignPlans	1400000	USD
CY2010	iaci	Defined Contribution Plan Contribution Foreign Plans DefinedContributionPlanContributionForeignPlans	400000	USD
CY2009	iaci	Defined Contribution Plan Contribution Foreign Plans DefinedContributionPlanContributionForeignPlans	500000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	15844000	USD
CY2010	us-gaap	Cost Of Services Excluding Depreciation Depletion And Amortization CostOfServicesExcludingDepreciationDepletionAndAmortization	508640000	USD
CY2009	us-gaap	Cost Of Services Excluding Depreciation Depletion And Amortization CostOfServicesExcludingDepreciationDepletionAndAmortization	352824000	USD
CY2011	us-gaap	Cost Of Services Excluding Depreciation Depletion And Amortization CostOfServicesExcludingDepreciationDepletionAndAmortization	666424000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	99359000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-978822000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	174233000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	171522000	USD
CY2011	iaci	Income Tax Expense Benefit Attributable To Stock Based Compensation IncomeTaxExpenseBenefitAttributableToStockBasedCompensation	-18000000	USD
CY2010	iaci	Income Tax Expense Benefit Attributable To Stock Based Compensation IncomeTaxExpenseBenefitAttributableToStockBasedCompensation	-5200000	USD
CY2009	iaci	Income Tax Expense Benefit Attributable To Stock Based Compensation IncomeTaxExpenseBenefitAttributableToStockBasedCompensation	-800000	USD
CY2011	iaci	Income Tax Expense Benefit Attributable To Settlements Of Vested Stock Based Awards Denominated In Subsidiaries Equity IncomeTaxExpenseBenefitAttributableToSettlementsOfVestedStockBasedAwardsDenominatedInSubsidiariesEquity	-4100000	USD
CY2010	iaci	Income Tax Expense Benefit Attributable To Settlements Of Vested Stock Based Awards Denominated In Subsidiaries Equity IncomeTaxExpenseBenefitAttributableToSettlementsOfVestedStockBasedAwardsDenominatedInSubsidiariesEquity	-4800000	USD
CY2011Q4	iaci	Operating Loss Carryforwards And Other Valuation Allowance OperatingLossCarryforwardsAndOtherValuationAllowance	45100000	USD
CY2011	iaci	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	353200000	USD
CY2011	iaci	Deferred Income Taxes For Interest On Unrecognized Tax Benefits Continuing Operations DeferredIncomeTaxesForInterestOnUnrecognizedTaxBenefitsContinuingOperations	900000	USD
CY2010	iaci	Deferred Income Taxes For Interest On Unrecognized Tax Benefits Continuing Operations DeferredIncomeTaxesForInterestOnUnrecognizedTaxBenefitsContinuingOperations	5800000	USD
CY2009	iaci	Deferred Income Taxes For Interest On Unrecognized Tax Benefits Continuing Operations DeferredIncomeTaxesForInterestOnUnrecognizedTaxBenefitsContinuingOperations	5500000	USD
CY2010Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-4727000	USD
CY2010Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2586000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9200000	shares
CY2011	iaci	Share Based Compensation Arrangement By Share Based Payment Award Plan Expiration Dating ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanExpirationDating	ten years
CY2011	iaci	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Required To Settle Interest Held By Subsidiaries Management ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesRequiredToSettleInterestHeldBySubsidiariesManagement	2200000	shares
CY2010	iaci	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Required To Settle Interest Held By Subsidiaries Management ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesRequiredToSettleInterestHeldBySubsidiariesManagement	3000000	shares
CY2011	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> <p style="FONT-FAMILY: times"><font size="2"><b>NOTE 17—CONTINGENCIES </b></font></p> <p style="FONT-FAMILY: times"><font size="2">        In the ordinary course of business, the Company is a party to various lawsuits. The Company establishes reserves for specific legal matters when it determines that the likelihood of an unfavorable outcome is probable and the loss is reasonably estimable. Management has also identified certain other legal matters where we believe an unfavorable outcome is not probable and, therefore, no reserve is established. Although management currently believes that resolving claims against us, including claims where an unfavorable outcome is reasonably possible, will not have a material impact on the liquidity, results of operations, or financial condition of the Company, these matters are subject to inherent uncertainties and management's view of these matters may change in the future. The Company also evaluates other contingent matters, including tax contingencies, to assess the probability and estimated extent of potential loss. It is possible that an unfavorable outcome of one or more of these lawsuits or other contingencies could have a material impact on the liquidity, results of operations, or financial condition of the Company. See Note 4 for additional information related to income tax contingencies.</font></p></td></tr></table>
CY2011Q4	iaci	Commercial Commitments Expiring Within Fourth And Fifth Year CommercialCommitmentsExpiringWithinFourthAndFifthYear	4666000	USD
CY2011Q4	iaci	Commercial Commitments Expiring CommercialCommitmentsExpiring	64433000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1433000	USD
CY2009	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	105002000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	10060000	USD
CY2010	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	140768000	USD
CY2010	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	7844000	USD
CY2009	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	4936000	USD
CY2011Q1	us-gaap	Revenues Revenues	460213000	USD
CY2011Q2	us-gaap	Revenues Revenues	485404000	USD
CY2011Q3	us-gaap	Revenues Revenues	516884000	USD
CY2010Q1	us-gaap	Revenues Revenues	378178000	USD
CY2010Q2	us-gaap	Revenues Revenues	394244000	USD
CY2010Q3	us-gaap	Revenues Revenues	412966000	USD
CY2010Q4	us-gaap	Revenues Revenues	451427000	USD
CY2011Q4	us-gaap	Revenues Revenues	596943000	USD
CY2011Q1	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	172718000	USD
CY2011Q2	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	181472000	USD
CY2011Q3	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	0188642000	USD
CY2010Q1	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	131149000	USD
CY2010Q2	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	140638000	USD
CY2010Q3	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	147933000	USD
CY2010Q4	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	174096000	USD
CY2011Q4	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	218412000	USD
CY2011Q4	iaci	Percentage Of Ownership Interest Held Each By Entity And By Related Party In Aircraft PercentageOfOwnershipInterestHeldEachByEntityAndByRelatedPartyInAircraft	0.50	pure
CY2011Q4	iaci	Percentage Of Ownership Interest Held Each By Entity And By Related Party In Another Entity Employing Flight Crew PercentageOfOwnershipInterestHeldEachByEntityAndByRelatedPartyInAnotherEntityEmployingFlightCrew	0.50	pure
CY2010Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-4795000	USD
CY2010Q1	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	18300000	USD
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-1948000	USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2488000	USD
CY2010Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	115853000	USD
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	4366000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	56736000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	203970000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	15214000	USD
CY2011	us-gaap	Payments To Acquire Longterm Investments PaymentsToAcquireLongtermInvestments	90245000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	12697000	USD
CY2011	iaci	Issuance Of Common Stock Net Of Withholding Taxes IssuanceOfCommonStockNetOfWithholdingTaxes	132785000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10668000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	22166000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8751000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-25033000	USD
CY2011	iaci	Goodwill Deductions During Period GoodwillDeductionsDuringPeriod	-409000	USD
CY2010	iaci	Goodwill Deductions During Period GoodwillDeductionsDuringPeriod	-923000	USD
CY2011	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	64831000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	87774000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	28363000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	76042000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	14399000	USD
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	518637000	USD
CY2011	iaci	Stock Exchange During Period Value StockExchangeDuringPeriodValue	2923000	USD
CY2011	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-4273000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	177030000	USD
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	378107000	USD
CY2011Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	64398000	USD
CY2011Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	126297000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	450533000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	302213000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	270501000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	16601000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	11280173000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-477785000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8885146000	USD
CY2011	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	614174000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	328728000	USD
CY2011	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	78760000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-36300000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	58314000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1287000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	57228000	USD
CY2011	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-29215000	USD
CY2011	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	48950000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-10674000	USD
CY2011	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	584935000	USD
CY2011	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-8417000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-4496000	USD
CY2009	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	216000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	1400000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	900000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	26619000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8023000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	37000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	700000	USD
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	7566000	shares
CY2011Q4	iaci	Commercial Commitments Expiring Within One Year CommercialCommitmentsExpiringWithinOneYear	28070000	USD
CY2010Q4	iaci	Payments For Repurchase Of Common Stock In Exchange Transaction PaymentsForRepurchaseOfCommonStockInExchangeTransaction	217900000	USD
CY2010Q4	iaci	Deferred Tax Liabilities Investment In Subsidiaries DeferredTaxLiabilitiesInvestmentInSubsidiaries	378704000	USD
CY2010Q4	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	140800000	USD
CY2010Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	56878000	USD
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	83692000	USD
CY2010	us-gaap	Cost Of Goods Sold Excluding Depreciation Depletion And Amortization CostOfGoodsSoldExcludingDepreciationDepletionAndAmortization	85176000	USD
CY2009	us-gaap	Cost Of Goods Sold Excluding Depreciation Depletion And Amortization CostOfGoodsSoldExcludingDepreciationDepletionAndAmortization	77025000	USD
CY2011	us-gaap	Cost Of Goods Sold Excluding Depreciation Depletion And Amortization CostOfGoodsSoldExcludingDepreciationDepletionAndAmortization	94820000	USD
CY2010	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	593816000	USD
CY2009	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	429849000	USD
CY2011	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1755000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	995000	USD
CY2009	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1333000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	21000	USD
CY2011	iaci	Cost Of Services And Goods Sold Excluding Depreciation Depletion And Amortization CostOfServicesAndGoodsSoldExcludingDepreciationDepletionAndAmortization	761244000	USD
CY2010Q1	iaci	Noncash Or Part Noncash Acquisition Cash Consideration Paid NoncashOrPartNoncashAcquisitionCashConsiderationPaid	3000000	USD
CY2009Q2	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Percentage BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage	0.27	pure
CY2009Q2	iaci	Noncash Transaction Shares Of Common Stock In Equity Method Investee Received From Sale NoncashTransactionSharesOfCommonStockInEquityMethodInvesteeReceivedFromSale	6100000	shares
CY2009Q2	iaci	Noncash Transaction Value Of Common Stock In Equity Method Investee Received From Sale NoncashTransactionValueOfCommonStockInEquityMethodInvesteeReceivedFromSale	154800000	USD
CY2009Q1	iaci	Noncash Transaction Shares Of Convertible Preferred Stock Received From Sale NoncashTransactionSharesOfConvertiblePreferredStockReceivedFromSale	3500000	shares
CY2009Q1	iaci	Noncash Transaction Value Of Convertible Preferred Stock Received From Sale NoncashTransactionValueOfConvertiblePreferredStockReceivedFromSale	33300000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	5128000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	5113000	USD
CY2009	us-gaap	Interest Paid Net InterestPaidNet	5682000	USD
CY2011	iaci	Number Of Brands NumberOfBrands	150	brand
CY2011Q4	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	30	country
CY2011	iaci	Cash Equivalents Maturity Period At Purchase Less Than CashEquivalentsMaturityPeriodAtPurchaseLessThan	91
CY2009Q2	iaci	Noncash Transaction Value Of Promissory Note Received From Sale NoncashTransactionValueOfPromissoryNoteReceivedFromSale	6200000	USD
CY2011Q4	iaci	Commercial Commitments Expiring Within Second And Third Year CommercialCommitmentsExpiringWithinSecondAndThirdYear	31697000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	400000	USD
CY2010	iaci	Payments For Repurchase Of Common Stock In Exchange Transaction PaymentsForRepurchaseOfCommonStockInExchangeTransaction	217921000	USD
CY2011	iaci	Income Tax Reconciliation Release Of Deferred Tax Liabilities Associated With Investments IncomeTaxReconciliationReleaseOfDeferredTaxLiabilitiesAssociatedWithInvestments	-43696000	USD
CY2010	us-gaap	Finite Lived Intangible Assets Weighted Average Useful Life FiniteLivedIntangibleAssetsWeightedAverageUsefulLife	4.1	year
CY2011	us-gaap	Finite Lived Intangible Assets Weighted Average Useful Life FiniteLivedIntangibleAssetsWeightedAverageUsefulLife	2.6	year
CY2011	us-gaap	Future Amortization Expense Year Five FutureAmortizationExpenseYearFive	455000	USD
CY2011	iaci	Number Of Reporting Units With Goodwill NumberOfReportingUnitsWithGoodwill	7	reportingunit
CY2011Q4	iaci	Deferred Tax Assets Investment In Noncontrolled Affiliates DeferredTaxAssetsInvestmentInNoncontrolledAffiliates	12850000	USD
CY2011Q4	iaci	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets And Other DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssetsAndOther	56597000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	64973000	USD
CY2011	iaci	Unrecognized Tax Benefits Income Tax Increase Decrease In Penalties UnrecognizedTaxBenefitsIncomeTaxIncreaseDecreaseInPenalties	-2500000	USD
CY2011Q4	iaci	Deferred Tax Liabilities Investment In Subsidiaries DeferredTaxLiabilitiesInvestmentInSubsidiaries	374282000	USD
CY2010Q4	iaci	Number Of Cost Method Investments For Which Impairment Has Been Recorded NumberOfCostMethodInvestmentsForWhichImpairmentHasBeenRecorded	1	investment
CY2010Q1	iaci	Number Of Equity Method Investments For Which Impairment Has Been Recorded NumberOfEquityMethodInvestmentsForWhichImpairmentHasBeenRecorded	1	investment
CY2011	iaci	Tax Benefits Recognition Basis For Uncertain Tax Position Likelihood Realization Greater Than Percentage TaxBenefitsRecognitionBasisForUncertainTaxPositionLikelihoodRealizationGreaterThanPercentage	0.50	pure
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	9200000	USD
CY2009	iaci	Income Tax Expense Benefit Attributable To Settlements Of Vested Stock Based Awards Denominated In Subsidiaries Equity IncomeTaxExpenseBenefitAttributableToSettlementsOfVestedStockBasedAwardsDenominatedInSubsidiariesEquity	-4300000	USD
CY2011	iaci	Valuation Allowance Deferred Tax Asset Change Attributable To Reevaluation Of Tax Asset ValuationAllowanceDeferredTaxAssetChangeAttributableToReevaluationOfTaxAsset	1800000	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2011Q4	us-gaap	Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	12	investment
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	83948000	USD
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	388518000	USD
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	89505000	USD
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	18900000	USD
CY2010	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	275584000	USD
CY2009	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	114128000	USD
CY2010	us-gaap	Equity Method Investment Summarized Financial Information Gross Profit Loss EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss	67716000	USD
CY2009	us-gaap	Equity Method Investment Summarized Financial Information Gross Profit Loss EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss	36900000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-17636000	USD
CY2010	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	14083000	USD
CY2009	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-4966000	USD
CY2011Q4	iaci	Minimum Percentage By Which Fair Value Exceeded Carrying Value MinimumPercentageByWhichFairValueExceededCarryingValue	0.20	pure
CY2011	iaci	Capitalize Access Fees Useful Life CapitalizeAccessFeesUsefulLife	18
CY2010Q4	iaci	Capitalize Access Fees Current CapitalizeAccessFeesCurrent	15804000	USD
CY2011Q4	iaci	Capitalize Access Fees Current CapitalizeAccessFeesCurrent	17704000	USD
CY2011	iaci	Class Of Warrant Or Right Exercised Weighted Average Strike Price ClassOfWarrantOrRightExercisedWeightedAverageStrikePrice	26.90
CY2011	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	13600000	shares
CY2010	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	23100000	shares
CY2010Q4	iaci	Segment Assets Excluding Goodwill And Intangible Assets SegmentAssetsExcludingGoodwillAndIntangibleAssets	2094542000	USD
CY2011Q4	iaci	Segment Assets Excluding Goodwill And Intangible Assets SegmentAssetsExcludingGoodwillAndIntangibleAssets	1673234000	USD
CY2011Q1	iaci	Common Stock Shares Received In Fulfillment Of Post Closing Working Capital Adjustments CommonStockSharesReceivedInFulfillmentOfPostClosingWorkingCapitalAdjustments	100000	shares
CY2011Q1	iaci	Stock Exchange During Period Value StockExchangeDuringPeriodValue	2900000	USD
CY2010Q1	iaci	Noncash Or Part Noncash Acquisition Interest Acquired Value NoncashOrPartNoncashAcquisitionInterestAcquiredValue	72000000	USD
CY2010	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	-37023000	USD
CY2009	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	-23439000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	-3992000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax	-4711000	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax	2186000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	5460000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1555000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1440000	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	15289000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-4504000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-49438000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7405000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-2720000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	11212000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	22694000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-7224000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-38226000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	174233000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	99359000	USD
CY2010Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	86964000	USD
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	48766000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-978822000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18070000	USD
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42424000	USD
CY2010Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-18705000	USD
CY2010Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	13591000	USD
CY2010Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17509000	USD
CY2009	iaci	Proft Loss Incuding Noncontrolling Interest Excluding Redeemable Noncontrolling Interest ProftLossIncudingNoncontrollingInterestExcludingRedeemableNoncontrollingInterest	-978822000	USD
CY2010	iaci	Other Than Temporary Impairment Losses Recognized In Earnings Net Availableforsale Securities Investments Portion OtherThanTemporaryImpairmentLossesRecognizedInEarningsNetAvailableforsaleSecuritiesInvestmentsPortion	7844000	USD
CY2010	iaci	Proft Loss Incuding Noncontrolling Interest Excluding Redeemable Noncontrolling Interest ProftLossIncudingNoncontrollingInterestExcludingRedeemableNoncontrollingInterest	99359000	USD
CY2011	iaci	Proft Loss Incuding Noncontrolling Interest Excluding Redeemable Noncontrolling Interest ProftLossIncudingNoncontrollingInterestExcludingRedeemableNoncontrollingInterest	171816000	USD
CY2009	iaci	Other Than Temporary Impairment Losses Recognized In Earnings Net Availableforsale Securities Investments Portion OtherThanTemporaryImpairmentLossesRecognizedInEarningsNetAvailableforsaleSecuritiesInvestmentsPortion	343000	USD
CY2009	iaci	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities Aro Stock OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecuritiesAroStock	4593000	USD

Files In Submission

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$MTCH
Match Group, Inc. Stock $mtch

2011 Q4 Form 8-K Financial Statement

#000104746912011266 Filed on December 17, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTCH Match Group, Inc. Stock $mtch

2011 Q4 Form 8-K Financial Statement

#000104746912011266 Filed on December 17, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTCH
Match Group, Inc. Stock $mtch