DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	6 Months Ended
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Company Information Groupon, Inc. and its subsidiaries, which commenced operations in October 2008, is a global scaled two-sided marketplace that connects consumers to merchants by offering goods and services, generally at a discount. Consumers access those marketplaces through our mobile applications and our websites. Our operations are organized into two segments: North America and International. See Note 13, Segment Information. COVID-19 Pandemic and Macroeconomic Conditions The COVID-19 pandemic has changed the environment that our business operates in, which includes changes in consumer behavior and macroeconomic impacts affecting both us and our merchants. Although global economies have begun to recover from the COVID-19 pandemic as many health and safety restrictions have been lifted, certain adverse consequences of the pandemic continue to impact the macroeconomic environment and may persist for some time. Impacts to our operations may be caused by macroeconomic trends such as the ongoing COVID-19 pandemic, inflationary pressures, higher labor costs, labor shortages, supply chain challenges and resulting changes in consumer and merchant behavior. The full extent of the impact of both the COVID-19 pandemic and recent macroeconomic trends on our business, operations and financial results will depend on numerous evolving factors. We continue to monitor the pandemic and other macroeconomic trends and the potential impacts they may have on our future financial position, results of operations and cash flows. See Part I, Item 1A. Risk Factors of our Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. Unaudited Interim Financial Information We have prepared the accompanying Condensed Consolidated Financial Statements pursuant to the rules and regulations of the SEC for interim financial reporting. These Condensed Consolidated Financial Statements are unaudited and, in our opinion, include all adjustments, consisting of normal recurring adjustments and accruals, necessary for a fair presentation of the Condensed Consolidated Balance Sheets, Statements of Operations and Comprehensive Income (Loss), Cash Flows and Stockholders' Equity for the periods presented. These Condensed Consolidated Financial Statements and notes should be read in conjunction with the audited Consolidated Financial Statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2021. Principles of Consolidation The Condensed Consolidated Financial Statements include the accounts of Groupon, Inc. and its wholly-owned subsidiaries, majority-owned subsidiaries over which we exercise control and variable interest entities for which we are the primary beneficiary. In July 2022, we extended our arrangement through July 2025 with the strategic partner in the variable interest entity that we consolidate. All intercompany accounts and transactions have been eliminated in consolidation. Outside stockholders' interests in subsidiaries are shown on the Condensed Consolidated Financial Statements as Noncontrolling interests. Investments in entities in which we do not have a controlling financial interest are accounted for at fair value, as available-for-sale securities or at cost adjusted for observable price changes and impairments, as appropriate. Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes. Estimates in our financial statements include, but are not limited to, the following: variable consideration from unredeemed vouchers; income taxes; leases; initial valuation and subsequent impairment testing of goodwill, other intangible assets and long-lived assets; investments; receivables; customer refunds and other reserves; contingent liabilities; and the useful lives of property, equipment and software and intangible assets. Actual results could differ materially from those estimates. Reclassifications Certain reclassifications have been made to the Condensed Consolidated Financial Statements of prior periods to conform to the current period presentation. Adoption of New Accounting Standards We early adopted the guidance in ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, on January 1, 2021. The ASU removes the separation models for convertible debt with a cash conversion feature or convertible instruments with a beneficial conversion feature. Additionally, the ASU removes certain conditions for equity classification related to contracts in an entity’s own equity (e.g., warrants) and amends certain guidance related to the computation of income (loss) per share for convertible instruments and contracts in an entity’s own equity. Prior to the adoption of ASU 2020-06, we separated the convertible senior notes due 2022 (the "Atairos Notes") into their liability and equity components. Following the adoption of ASU 2020-06, the previously bifurcated equity component of the Atairos Notes was recombined with the liability component, resulting in a single liability-classified instrument. The carrying value of the Atairos Notes at transition was determined by recalculating the basis of the Atairos Notes as if the conversion option had not been bifurcated at issuance. Transaction costs related to the issuance of the Atairos Notes that were allocated to the equity component were reclassified out of Additional paid-in-capital and the amortization and the related debt discount associated with these costs was recalculated through the transition date. The transaction costs were recorded as a debt discount in the Condensed Consolidated Balance Sheets and amortized to interest expense over the remaining term of the Atairos Notes. Together with the cash interest, this resulted in an effective interest rate of 3.76%. As a result of adopting ASU 2020-06, in the first quarter of 2021, we recorded a $67.0 million net reduction to additional paid-in capital, a $19.0 million increase to Convertible senior notes, net and a $48.0 million reduction to our opening accumulated deficit as of January 1, 2021. In the fourth quarter of 2021, we recorded an additional $2.7 million adjustment to our opening accumulated deficit and additional paid-in capital related to tax impacts of our bond hedges.