CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (unaudited) - USD ($) $ in Thousands	Total	Total Groupon, Inc. Stockholders' Equity (Deficit)	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2021			40,007,255
Beginning balance (in shares) at Dec. 31, 2021					(10,294,117)
Beginning balance at Dec. 31, 2021	$ 210,296	$ 209,872	$ 4	$ 2,294,215	$ (922,666)	$ (1,156,868)	$ (4,813)	$ 424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(30,983)	(31,483)				(34,852)	3,369	500
Vesting of restricted stock units and performance share units (in shares)			308,152
Shares issued under employee stock purchase plan (in shares)			30,022
Shares issued under employee stock purchase plan	591	591		591
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(118,589)
Tax withholdings related to net share settlements of stock-based compensation awards	(2,597)	(2,597)		(2,597)
Stock-based compensation on equity-classified awards	8,349	8,349		8,349
Distributions to noncontrolling interest holders	(814)							(814)
Ending balance (in shares) at Mar. 31, 2022			40,226,840
Ending balance (in shares) at Mar. 31, 2022					(10,294,117)
Ending balance at Mar. 31, 2022	184,842	184,732	$ 4	2,300,558	$ (922,666)	(1,191,720)	(1,444)	110
Beginning balance (in shares) at Dec. 31, 2021			40,007,255
Beginning balance (in shares) at Dec. 31, 2021					(10,294,117)
Beginning balance at Dec. 31, 2021	210,296	209,872	$ 4	2,294,215	$ (922,666)	(1,156,868)	(4,813)	424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(100,415)
Ending balance (in shares) at Jun. 30, 2022			40,482,898
Ending balance (in shares) at Jun. 30, 2022					(10,294,117)
Ending balance at Jun. 30, 2022	122,085	121,941	$ 4	2,308,176	$ (922,666)	(1,282,947)	19,374	144
Beginning balance (in shares) at Mar. 31, 2022			40,226,840
Beginning balance (in shares) at Mar. 31, 2022					(10,294,117)
Beginning balance at Mar. 31, 2022	184,842	184,732	$ 4	2,300,558	$ (922,666)	(1,191,720)	(1,444)	110
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(69,432)	(70,409)				(91,227)	20,818	977
Vesting of restricted stock units and performance share units (in shares)			407,426
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(151,368)
Tax withholdings related to net share settlements of stock-based compensation awards	(2,166)	(2,166)		(2,166)
Stock-based compensation on equity-classified awards	9,784	9,784		9,784
Distributions to noncontrolling interest holders	(943)							(943)
Ending balance (in shares) at Jun. 30, 2022			40,482,898
Ending balance (in shares) at Jun. 30, 2022					(10,294,117)
Ending balance at Jun. 30, 2022	$ 122,085	121,941	$ 4	2,308,176	$ (922,666)	(1,282,947)	19,374	144
Beginning balance (in shares) at Dec. 31, 2022			40,786,996
Beginning balance (in shares) at Dec. 31, 2022	(10,294,117)				(10,294,117)
Beginning balance at Dec. 31, 2022	$ 8,858	8,475	$ 4	2,322,672	$ (922,666)	(1,394,477)	2,942	383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(34,461)	(34,995)				(29,147)	(5,848)	534
Vesting of restricted stock units and performance share units (in shares)			420,471
Shares issued under employee stock purchase plan (in shares)			33,803
Shares issued under employee stock purchase plan	246	246		246
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(140,819)
Tax withholdings related to net share settlements of stock-based compensation awards	(1,031)	(1,031)		(1,031)
Stock-based compensation on equity-classified awards	2,547	2,547		2,547
Distributions to noncontrolling interest holders	(637)							(637)
Ending balance (in shares) at Mar. 31, 2023			41,100,451
Ending balance (in shares) at Mar. 31, 2023					(10,294,117)
Ending balance at Mar. 31, 2023	$ (24,478)	(24,758)	$ 4	2,324,434	$ (922,666)	(1,423,624)	(2,906)	280
Beginning balance (in shares) at Dec. 31, 2022			40,786,996
Beginning balance (in shares) at Dec. 31, 2022	(10,294,117)				(10,294,117)
Beginning balance at Dec. 31, 2022	$ 8,858	8,475	$ 4	2,322,672	$ (922,666)	(1,394,477)	2,942	383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	$ (40,720)
Ending balance (in shares) at Jun. 30, 2023			41,521,134
Ending balance (in shares) at Jun. 30, 2023	(10,294,117)				(10,294,117)
Ending balance at Jun. 30, 2023	$ (24,827)	(25,018)	$ 4	2,331,036	$ (922,666)	(1,436,231)	2,839	191
Beginning balance (in shares) at Mar. 31, 2023			41,100,451
Beginning balance (in shares) at Mar. 31, 2023					(10,294,117)
Beginning balance at Mar. 31, 2023	(24,478)	(24,758)	$ 4	2,324,434	$ (922,666)	(1,423,624)	(2,906)	280
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(6,259)	(6,862)				(12,607)	5,745	603
Vesting of restricted stock units and performance share units (in shares)			689,050
Tax withholdings related to net share settlements of stock-based compensation awards (in shares)			(268,367)
Tax withholdings related to net share settlements of stock-based compensation awards	(1,207)	(1,207)		(1,207)
Stock-based compensation on equity-classified awards	7,809	7,809		7,809
Distributions to noncontrolling interest holders	$ (692)							(692)
Ending balance (in shares) at Jun. 30, 2023			41,521,134
Ending balance (in shares) at Jun. 30, 2023	(10,294,117)				(10,294,117)
Ending balance at Jun. 30, 2023	$ (24,827)	$ (25,018)	$ 4	$ 2,331,036	$ (922,666)	$ (1,436,231)	$ 2,839	$ 191