THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations ANGI Homeservices Inc. connects quality home service pros across 500 different categories, from repairing and remodeling to cleaning and landscaping, with consumers. Over 250,000 domestic service professionals find work through ANGI Homeservices, and consumers turn to at least one of our brands to find a pro for more than 20 million projects each year. We’ve established category-transforming products with brands such as HomeAdvisor, Angie’s List, Handy and Fixd Repair. At September 30, 2019, IAC owned 83.7% and 98.1% of the economic and voting interest, respectively, of ANGI Homeservices. The Company has two operating segments (i) North America (United States and Canada), which includes HomeAdvisor, Angie's List, Handy, mHelpDesk, HomeStars, Fixd Repair and Felix, for periods prior to its sale on December 31, 2018, and (ii) Europe, which includes Travaux, MyHammer, My Builder, Werkspot and Instapro. As used herein, "ANGI Homeservices," the "Company," "ANGI," "we," "our" or "us" and similar terms refer to ANGI Homeservices Inc. and its subsidiaries (unless the context requires otherwise). Basis of Presentation and Consolidation The Company prepares its consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”). The consolidated financial statements include the accounts of the Company, all entities that are wholly-owned by the Company and all entities in which the Company has a controlling financial interest. Intercompany transactions and accounts have been eliminated. For the purpose of these financial statements, income taxes have been computed as if ANGI Homeservices filed on a standalone, separate tax return basis. Any differences between taxes currently payable to or receivable from IAC under the tax sharing agreement between the Company and IAC and the current tax provision computed on an as if standalone, separate return basis for GAAP are reflected as adjustments to additional paid-in capital and as financing activities within the statement of cash flows. In management's opinion, the unaudited interim consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and reflect all adjustments, consisting of normal and recurring adjustments, necessary for the fair presentation of our financial position, results of operations and cash flows for the periods presented. Interim results are not necessarily indicative of the results that may be expected for the full year. The accompanying unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2018. Accounting Estimates Management of the Company is required to make certain estimates, judgments and assumptions during the preparation of its consolidated financial statements in accordance with 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 these estimates. On an ongoing basis, the Company evaluates its estimates and judgments, including those related to: the fair values of cash equivalents and marketable debt securities; the carrying value of accounts receivable, including the determination of the allowance for doubtful accounts; the determination of revenue reserves; the useful lives and recoverability of definite-lived intangible assets and property and equipment; the recoverability of goodwill and indefinite-lived intangible assets; unrecognized tax benefits; 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. General Revenue Recognition Revenue is recognized when control of the promised services or goods is transferred to our customers and in the amount that reflects the consideration the Company expects to be entitled to in exchange for those services or goods. The Company's disaggregated revenue disclosures are presented in "Note 9—Segment Information." Deferred Revenue Deferred revenue consists of payments that are received or are contractually due in advance of the Company's performance. The Company’s deferred revenue is reported on a contract by contract basis at the end of each reporting period. The Company classifies deferred revenue as current when the term of the applicable subscription period or expected completion of our performance obligation is one year or less. The current and non-current deferred revenue balances at December 31, 2018 are $61.4 million and $0.5 million, respectively. During the nine months ended September 30, 2019, the Company recognized $58.5 million of revenue that was included in the deferred revenue balance as of December 31, 2018. During the nine months ended September 30, 2018, the Company recognized $58.0 million of revenue that was included in the deferred revenue balance as of January 1, 2018. The current and non-current deferred revenue balances at September 30, 2019 are $64.8 million and $0.2 million, respectively. Non-current deferred revenue is included in “Other long-term liabilities” in the accompanying consolidated balance sheet. Practical Expedients and Exemptions As permitted under the practical expedient available under ASU No. 2014-09, Revenue from Contracts with Customers, the Company does not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less, (ii) contracts with variable consideration that is allocated entirely to unsatisfied performance obligations or to a wholly unsatisfied promise accounted for under the series guidance, and (iii) contracts for which the Company recognizes revenue at the amount which we have the right to invoice for services performed. For sales incentive programs where the customer relationship period is one year or less, the Company has elected the practical expedient to expense the costs as incurred. The amount of capitalized sales commissions where the customer relationship period is greater than one year is $40.4 million and $38.8 million at September 30, 2019 and December 31, 2018, respectively. Recent Accounting Pronouncements Accounting Pronouncement Adopted by the Company Adoption of ASU No. 2016-02, Leases (Topic 842) The Company adopted Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842) ("ASC 842") effective January 1, 2019. ASC 842 superseded previously existing guidance on accounting for leases and generally requires all leases to be recognized in the statement of financial position. The adoption of ASC 842 resulted in the recognition of $69.4 million of right-of-use assets ("ROU assets") and related lease liabilities as of January 1, 2019, with no cumulative effect adjustment. The adoption of ASC 842 had no impact on the Company’s consolidated statement of operations and consolidated statement of cash flows. The Company adopted ASC 842 prospectively and, therefore, did not revise comparative period information or disclosure. In addition, the Company elected the package of practical expedients permitted under ASC 842. See "Note 2—Leases" for additional information on the adoption of ASC 842. Accounting Pronouncement Not Yet Adopted by the Company ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments In June 2016, the Financial Accounting Standards Board issued ASU No. 2016-13, which significantly changes how entities will measure credit losses for most financial assets, including accounts receivable. ASU No. 2016-13 will replace today’s “incurred loss” approach with an “expected loss” model, under which companies will recognize allowances based on expected rather than incurred losses. The provisions of ASU No. 2016-13 are effective for reporting periods beginning after December 15, 2019. Upon adoption, ASU No. 2016-13 will be applied using the modified retrospective approach with a cumulative-effect adjustment to retained earnings recognized as of the date of initial application. The adoption of ASU No. 2016-13 is not expected to have a material effect on the Company's consolidated financial statements. Reclassifications Certain prior year amounts have been reclassified to conform to the current year presentation.