COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended					36 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2017	Dec. 31, 2012	Dec. 31, 2015
Loss Contingencies [Line Items]
Foreign VAT assessments	$ 0	$ 8,692	$ 0
Contingency reserve , amount	9,724	8,355
Indemnification liabilities	3,400	2,800
Additional liabilities recorded	616	0	0
Indemnification liability, maximum exposure	10,200
Groupon Latin America
Loss Contingencies [Line Items]
Indemnification liability				$ 5,400
Additional liabilities recorded	600
Italy 2012 Assessment | International | Groupon S.r.l.
Loss Contingencies [Line Items]
Income tax examination, estimate of possible loss					$ 134,900
Italy 2017 Assessment | International | Groupon S.r.l.
Loss Contingencies [Line Items]
Income tax examination, estimate of possible loss				$ 35,100
Portuguese VAT Assessment, Periods 2013 To 2015 | Pending Litigation
Loss Contingencies [Line Items]
Value added tax assessment, bank guarantee	4,100
Portuguese VAT Assessment, Periods 2013 To 2015 | Maximum | Pending Litigation
Loss Contingencies [Line Items]
Foreign VAT assessments	4,700
Portuguese VAT Assessment, Periods 2011 To 2012 | Pending Litigation
Loss Contingencies [Line Items]
Foreign VAT assessments						$ 5,000
Value added tax assessment, bank guarantee	$ 4,400
Contingency reserve , amount		$ 4,600
Lawsuit against Uptake in the Circuit Court of Cook County
Loss Contingencies [Line Items]
Payment to lawsuit settlement			$ 4,250