CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenue	$ 124,615	$ 129,109	$ 247,699	$ 250,720
Cost of revenue	11,948	16,144	24,475	33,044
Gross profit	112,667	112,965	223,224	217,676
Operating expenses:
Marketing	36,520	22,267	65,329	47,115
Selling, general and administrative	77,212	96,263	151,610	197,897
Restructuring and related charges (credits)	(379)	(689)	(283)	8,105
Gain on sale of assets	(5,044)	0	(5,160)	0
Total operating expenses	108,309	117,841	211,496	253,117
Income (loss) from operations	4,358	(4,876)	11,728	(35,441)
Other income (expense), net	(4,483)	(4,805)	(17,165)	(1,735)
Income (loss) before provision (benefit) for income taxes	(125)	(9,681)	(5,437)	(37,176)
Provision (benefit) for income taxes	9,287	2,323	15,481	3,441
Net income (loss)	(9,412)	(12,004)	(20,918)	(40,617)
Net (income) loss attributable to noncontrolling interests	(623)	(603)	(1,388)	(1,137)
Net income (loss) attributable to Groupon, Inc.	$ (10,035)	$ (12,607)	$ (22,306)	$ (41,754)
Earnings Per Share [Abstract]
Basic net income (loss) per share (in usd per share)	$ (0.25)	$ (0.41)	$ (0.58)	$ (1.36)
Diluted net income (loss) per share (in usd per share)	$ (0.25)	$ (0.41)	$ (0.58)	$ (1.36)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic weighted average number of shares outstanding (in shares)	39,430,656	31,020,493	38,570,401	30,796,943
Diluted weighted average number of shares outstanding (in shares)	39,430,656	31,020,493	38,570,401	30,796,943
Comprehensive income (loss):
Net income (loss)	$ (9,412)	$ (12,004)	$ (20,918)	$ (40,617)
Other comprehensive income (loss):
Net change in unrealized gain (loss) on foreign currency translation adjustments	4,602	5,745	16,954	(103)
Comprehensive income (loss)	(4,810)	(6,259)	(3,964)	(40,720)
Comprehensive (income) loss attributable to noncontrolling interest	(623)	(603)	(1,388)	(1,137)
Comprehensive income (loss) attributable to Groupon, Inc.	$ (5,433)	$ (6,862)	$ (5,352)	$ (41,857)