DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)	9 Months Ended
Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	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. 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	Use of Estimates The preparation of financial statements in conformity with 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	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 and Recently Issued Accounting Standards	Adoption of New Accounting Standards There were no new accounting standards adopted during the three and nine months ended September 30, 2024. Recently Issued Accounting Standards In November 2023, the FASB issued ASU 2023-07 Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures which expands the annual and interim disclosure requirements for reportable segments, primarily through additional disclosures about significant segment expenses that are regularly provided to the chief operating decision maker and included in the segment measure of profit or loss. It also requires an explanation of how the chief operating decision maker uses the segment measure of profit or loss to assess segment performance and allocate resources. This ASU is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The Company is assessing the effect this guidance may have on our disclosures. In December 2023, the FASB issued ASU 2023-09 Income Taxes (Topic 740): Improvements to Income Tax Disclosures, requiring the Company to disclose specified additional information in its income tax rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. This ASU is effective for annual periods beginning after December 15, 2024. The Company is assessing the effect this guidance may have on our disclosures.

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

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. 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 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 and Recently Issued Accounting Standards

Adoption of New Accounting Standards

There were no new accounting standards adopted during the three and nine months ended September 30, 2024.

Recently Issued Accounting Standards

In November 2023, the FASB issued ASU 2023-07 Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures which expands the annual and interim disclosure requirements for reportable segments, primarily through additional disclosures about significant segment expenses that are regularly provided to the chief operating decision maker and included in the segment measure of profit or loss. It also requires an explanation of how the chief operating decision maker uses the segment measure of profit or loss to assess segment performance and allocate resources. This ASU is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The Company is assessing the effect this guidance may have on our disclosures.

In December 2023, the FASB issued ASU 2023-09 Income Taxes (Topic 740): Improvements to Income Tax Disclosures, requiring the Company to disclose specified additional information in its income tax rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. This ASU is effective for annual periods beginning after December 15, 2024. The Company is assessing the effect this guidance may have on our disclosures.