v2.4.1.9

GUARANTOR AND NONGUARANTOR FINANCIAL INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 830,754 us-gaap_Revenues | $ 782,231 us-gaap_Revenues | $ 756,315 us-gaap_Revenues | $ 740,247 us-gaap_Revenues | $ 724,455 us-gaap_Revenues | $ 756,872 us-gaap_Revenues | $ 799,411 us-gaap_Revenues | $ 742,249 us-gaap_Revenues | $ 3,109,547 us-gaap_Revenues | $ 3,022,987 us-gaap_Revenues | $ 2,800,933 us-gaap_Revenues
Cost of revenue | 238,517 us-gaap_CostOfGoodsAndServicesSold | 224,695 us-gaap_CostOfGoodsAndServicesSold | 210,730 us-gaap_CostOfGoodsAndServicesSold | 209,234 us-gaap_CostOfGoodsAndServicesSold | 222,421 us-gaap_CostOfGoodsAndServicesSold | 249,888 us-gaap_CostOfGoodsAndServicesSold | 273,938 us-gaap_CostOfGoodsAndServicesSold | 257,474 us-gaap_CostOfGoodsAndServicesSold | 883,176 us-gaap_CostOfGoodsAndServicesSold | 1,003,721 us-gaap_CostOfGoodsAndServicesSold | 991,688 us-gaap_CostOfGoodsAndServicesSold
Selling and marketing expense |  |  |  |  |  |  |  |  | 1,124,437 us-gaap_SellingAndMarketingExpense | 956,410 us-gaap_SellingAndMarketingExpense | 894,438 us-gaap_SellingAndMarketingExpense
General and administrative expense |  |  |  |  |  |  |  |  | 443,610 us-gaap_GeneralAndAdministrativeExpense | 378,142 us-gaap_GeneralAndAdministrativeExpense | 386,461 us-gaap_GeneralAndAdministrativeExpense
Product development expense |  |  |  |  |  |  |  |  | 160,515 us-gaap_ResearchAndDevelopmentExpense | 139,759 us-gaap_ResearchAndDevelopmentExpense | 116,526 us-gaap_ResearchAndDevelopmentExpense
Depreciation |  |  |  |  |  |  |  |  | 61,156 us-gaap_Depreciation | 58,909 us-gaap_Depreciation | 52,481 us-gaap_Depreciation
Amortization of intangibles |  |  |  |  |  |  |  |  | 57,926 us-gaap_AmortizationOfIntangibleAssets | 59,843 us-gaap_AmortizationOfIntangibleAssets | 35,771 us-gaap_AmortizationOfIntangibleAssets
Total operating costs and expenses |  |  |  |  |  |  |  |  | 2,730,820 us-gaap_CostsAndExpenses | 2,596,784 us-gaap_CostsAndExpenses | 2,477,365 us-gaap_CostsAndExpenses
Operating income | 110,372 us-gaap_OperatingIncomeLoss | 100,953 us-gaap_OperatingIncomeLoss | 95,690 us-gaap_OperatingIncomeLoss | 71,712 us-gaap_OperatingIncomeLoss | 112,952 us-gaap_OperatingIncomeLoss | 122,004 us-gaap_OperatingIncomeLoss | 106,696 us-gaap_OperatingIncomeLoss | 84,551 us-gaap_OperatingIncomeLoss | 378,727 us-gaap_OperatingIncomeLoss | 426,203 us-gaap_OperatingIncomeLoss | 323,568 us-gaap_OperatingIncomeLoss
Equity in losses of unconsolidated affiliates |  |  |  |  |  |  |  |  | (9,697)us-gaap_IncomeLossFromEquityMethodInvestments | (6,615)us-gaap_IncomeLossFromEquityMethodInvestments | (25,345)us-gaap_IncomeLossFromEquityMethodInvestments
Interest expense |  |  |  |  |  |  |  |  | (56,314)us-gaap_InterestExpense | (33,596)us-gaap_InterestExpense | (6,149)us-gaap_InterestExpense
Other (expense) income, net |  |  |  |  |  |  |  |  | (42,787)us-gaap_NonoperatingIncomeExpense | 30,309 us-gaap_NonoperatingIncomeExpense | (3,012)us-gaap_NonoperatingIncomeExpense
Earnings from continuing operations before income taxes |  |  |  |  |  |  |  |  | 269,929 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 416,301 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 289,062 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax provision |  |  |  |  |  |  |  |  | (35,372)us-gaap_IncomeTaxExpenseBenefit | (134,502)us-gaap_IncomeTaxExpenseBenefit | (119,215)us-gaap_IncomeTaxExpenseBenefit
Earnings from continuing operations | 67,986 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 150,261 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | (17,995)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 34,305 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 78,829 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 91,721 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 58,540 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 52,709 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 234,557 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 281,799 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 169,847 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Less: earnings (loss) from discontinued operations, net of tax | 625 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 175,730 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (868)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (814)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 24 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 3,914 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (1,068)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (944)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 174,673 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 1,926 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (9,051)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net earnings | 68,611 us-gaap_ProfitLoss | 325,991 us-gaap_ProfitLoss | (18,863)us-gaap_ProfitLoss | 33,491 us-gaap_ProfitLoss | 78,853 us-gaap_ProfitLoss | 95,635 us-gaap_ProfitLoss | 57,472 us-gaap_ProfitLoss | 51,765 us-gaap_ProfitLoss | 409,230 us-gaap_ProfitLoss | 283,725 us-gaap_ProfitLoss | 160,796 us-gaap_ProfitLoss
Net loss (earnings) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 5,643 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 2,059 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (1,530)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net earnings attributable to IAC shareholders | 70,172 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 326,812 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (17,996)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 35,885 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 76,917 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 96,940 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 58,290 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 53,637 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 414,873 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 285,784 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 159,266 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Comprehensive income attributable to IAC shareholders |  |  |  |  |  |  |  |  | 340,219 us-gaap_ComprehensiveIncomeNetOfTax | 304,907 us-gaap_ComprehensiveIncomeNetOfTax | 139,540 us-gaap_ComprehensiveIncomeNetOfTax
IAC |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cost of revenue |  |  |  |  |  |  |  |  | 998 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,456 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,194 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Selling and marketing expense |  |  |  |  |  |  |  |  | 2,138 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,563 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,081 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
General and administrative expense |  |  |  |  |  |  |  |  | 105,221 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 97,025 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 121,919 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Product development expense |  |  |  |  |  |  |  |  | 6,496 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,685 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,611 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Depreciation |  |  |  |  |  |  |  |  | 1,426 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,386 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 832 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Amortization of intangibles |  |  |  |  |  |  |  |  | 0 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total operating costs and expenses |  |  |  |  |  |  |  |  | 116,279 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 108,115 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 137,637 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Operating income |  |  |  |  |  |  |  |  | (116,279)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (108,115)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (137,637)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Equity in losses of unconsolidated affiliates |  |  |  |  |  |  |  |  | 253,582 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 439,925 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 309,639 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest expense |  |  |  |  |  |  |  |  | (51,988)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (29,417)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,835)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other (expense) income, net |  |  |  |  |  |  |  |  | 2,688 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (35,331)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (82,900)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Earnings from continuing operations before income taxes |  |  |  |  |  |  |  |  | 88,003 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 267,062 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 87,267 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income tax provision |  |  |  |  |  |  |  |  | 152,197 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 16,796 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 81,050 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Earnings from continuing operations |  |  |  |  |  |  |  |  | 240,200 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 283,858 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 168,317 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Less: earnings (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 174,673 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,926 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (9,051)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net earnings |  |  |  |  |  |  |  |  | 414,873 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 285,784 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 159,266 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net loss (earnings) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net earnings attributable to IAC shareholders |  |  |  |  |  |  |  |  | 414,873 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 285,784 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 159,266 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Comprehensive income attributable to IAC shareholders |  |  |  |  |  |  |  |  | 340,219 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 304,907 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 139,540 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 2,286,621 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 2,183,969 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,986,527 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Cost of revenue |  |  |  |  |  |  |  |  | 525,185 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 600,511 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 597,588 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Selling and marketing expense |  |  |  |  |  |  |  |  | 904,221 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 769,115 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 669,448 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
General and administrative expense |  |  |  |  |  |  |  |  | 211,293 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 164,173 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 152,166 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Product development expense |  |  |  |  |  |  |  |  | 110,375 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 100,350 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 83,008 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Depreciation |  |  |  |  |  |  |  |  | 40,645 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 38,938 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 35,544 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Amortization of intangibles |  |  |  |  |  |  |  |  | 37,661 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 40,277 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 10,958 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Total operating costs and expenses |  |  |  |  |  |  |  |  | 1,829,380 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,713,364 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,548,712 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Operating income |  |  |  |  |  |  |  |  | 457,241 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 470,605 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 437,815 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Equity in losses of unconsolidated affiliates |  |  |  |  |  |  |  |  | 34,613 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 62,402 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 37,866 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Interest expense |  |  |  |  |  |  |  |  | (4,246)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (3,979)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (4,174)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Other (expense) income, net |  |  |  |  |  |  |  |  | (3,315)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (35,040)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (3,733)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Earnings from continuing operations before income taxes |  |  |  |  |  |  |  |  | 484,293 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 493,988 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 467,774 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income tax provision |  |  |  |  |  |  |  |  | (172,128)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (156,170)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (146,333)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Earnings from continuing operations |  |  |  |  |  |  |  |  | 312,165 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 337,818 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 321,441 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Less: earnings (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net earnings |  |  |  |  |  |  |  |  | 312,165 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 337,818 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 321,441 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net loss (earnings) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net earnings attributable to IAC shareholders |  |  |  |  |  |  |  |  | 312,165 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 337,818 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 321,441 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Comprehensive income attributable to IAC shareholders |  |  |  |  |  |  |  |  | 303,976 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 338,683 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 322,212 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 834,765 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 843,133 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 820,759 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Cost of revenue |  |  |  |  |  |  |  |  | 359,746 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 403,614 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 393,811 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Selling and marketing expense |  |  |  |  |  |  |  |  | 226,381 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 185,865 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 222,374 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
General and administrative expense |  |  |  |  |  |  |  |  | 127,051 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 117,066 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 112,359 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Product development expense |  |  |  |  |  |  |  |  | 44,472 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 34,724 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 27,907 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Depreciation |  |  |  |  |  |  |  |  | 19,085 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 18,585 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 16,105 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Amortization of intangibles |  |  |  |  |  |  |  |  | 20,265 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 19,566 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 24,813 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Total operating costs and expenses |  |  |  |  |  |  |  |  | 797,000 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 779,420 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 797,369 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Operating income |  |  |  |  |  |  |  |  | 37,765 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 63,713 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 23,390 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Equity in losses of unconsolidated affiliates |  |  |  |  |  |  |  |  | 452 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (303)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (22,548)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Interest expense |  |  |  |  |  |  |  |  | (80)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (200)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (140)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other (expense) income, net |  |  |  |  |  |  |  |  | (42,160)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 100,680 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 83,621 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Earnings from continuing operations before income taxes |  |  |  |  |  |  |  |  | (4,023)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 163,890 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 84,323 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income tax provision |  |  |  |  |  |  |  |  | (15,441)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 4,872 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (53,932)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Earnings from continuing operations |  |  |  |  |  |  |  |  | (19,464)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 168,762 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 30,391 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Less: earnings (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 570 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (39)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 842 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net earnings |  |  |  |  |  |  |  |  | (18,894)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 168,723 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 31,233 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net loss (earnings) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 5,643 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 2,059 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (1,530)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net earnings attributable to IAC shareholders |  |  |  |  |  |  |  |  | (13,251)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 170,782 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 29,703 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Comprehensive income attributable to IAC shareholders |  |  |  |  |  |  |  |  | (84,767)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 181,481 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 29,828 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
IAC Consolidated |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 3,109,547 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 3,022,987 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 2,800,933 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Cost of revenue |  |  |  |  |  |  |  |  | 883,176 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 1,003,721 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 991,688 us-gaap_CostOfGoodsAndServicesSold / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Selling and marketing expense |  |  |  |  |  |  |  |  | 1,124,437 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 956,410 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 894,438 us-gaap_SellingAndMarketingExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
General and administrative expense |  |  |  |  |  |  |  |  | 443,610 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 378,142 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 386,461 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Product development expense |  |  |  |  |  |  |  |  | 160,515 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 139,759 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 116,526 us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Depreciation |  |  |  |  |  |  |  |  | 61,156 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 58,909 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 52,481 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Amortization of intangibles |  |  |  |  |  |  |  |  | 57,926 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 59,843 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 35,771 us-gaap_AmortizationOfIntangibleAssets / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Total operating costs and expenses |  |  |  |  |  |  |  |  | 2,730,820 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 2,596,784 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 2,477,365 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Operating income |  |  |  |  |  |  |  |  | 378,727 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 426,203 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 323,568 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Equity in losses of unconsolidated affiliates |  |  |  |  |  |  |  |  | (9,697)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (6,615)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (25,345)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Interest expense |  |  |  |  |  |  |  |  | (56,314)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (33,596)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (6,149)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Other (expense) income, net |  |  |  |  |  |  |  |  | (42,787)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 30,309 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (3,012)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Earnings from continuing operations before income taxes |  |  |  |  |  |  |  |  | 269,929 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 416,301 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 289,062 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Income tax provision |  |  |  |  |  |  |  |  | (35,372)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (134,502)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (119,215)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Earnings from continuing operations |  |  |  |  |  |  |  |  | 234,557 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 281,799 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 169,847 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Less: earnings (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 174,673 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 1,926 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (9,051)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Net earnings |  |  |  |  |  |  |  |  | 409,230 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 283,725 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 160,796 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Net loss (earnings) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 5,643 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 2,059 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | (1,530)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Net earnings attributable to IAC shareholders |  |  |  |  |  |  |  |  | 414,873 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 285,784 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 159,266 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Comprehensive income attributable to IAC shareholders |  |  |  |  |  |  |  |  | 340,219 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 304,907 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember | 139,540 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ConsolidatedEntitiesMember
Eliminations |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (11,839)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (4,115)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (6,353)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Cost of revenue |  |  |  |  |  |  |  |  | (2,753)us-gaap_CostOfGoodsAndServicesSold / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (2,860)us-gaap_CostOfGoodsAndServicesSold / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (4,905)us-gaap_CostOfGoodsAndServicesSold / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Selling and marketing expense |  |  |  |  |  |  |  |  | (8,303)us-gaap_SellingAndMarketingExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (1,133)us-gaap_SellingAndMarketingExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (1,465)us-gaap_SellingAndMarketingExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
General and administrative expense |  |  |  |  |  |  |  |  | 45 us-gaap_GeneralAndAdministrativeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (122)us-gaap_GeneralAndAdministrativeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 17 us-gaap_GeneralAndAdministrativeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Product development expense |  |  |  |  |  |  |  |  | (828)us-gaap_ResearchAndDevelopmentExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_ResearchAndDevelopmentExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_ResearchAndDevelopmentExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Depreciation |  |  |  |  |  |  |  |  | 0 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Amortization of intangibles |  |  |  |  |  |  |  |  | 0 us-gaap_AmortizationOfIntangibleAssets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_AmortizationOfIntangibleAssets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_AmortizationOfIntangibleAssets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Total operating costs and expenses |  |  |  |  |  |  |  |  | (11,839)us-gaap_CostsAndExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (4,115)us-gaap_CostsAndExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (6,353)us-gaap_CostsAndExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Operating income |  |  |  |  |  |  |  |  | 0 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Equity in losses of unconsolidated affiliates |  |  |  |  |  |  |  |  | (298,344)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (508,639)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (350,302)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Interest expense |  |  |  |  |  |  |  |  | 0 us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Other (expense) income, net |  |  |  |  |  |  |  |  | 0 us-gaap_NonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_NonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_NonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Earnings from continuing operations before income taxes |  |  |  |  |  |  |  |  | (298,344)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (508,639)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (350,302)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Income tax provision |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Earnings from continuing operations |  |  |  |  |  |  |  |  | (298,344)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (508,639)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (350,302)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Less: earnings (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | (570)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 39 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (842)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Net earnings |  |  |  |  |  |  |  |  | (298,914)us-gaap_ProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (508,600)us-gaap_ProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (351,144)us-gaap_ProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
Net loss (earnings) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.12) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.14) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 5 + Details
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