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INCOME TAXES - Narrative (Details) - International - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jul. 31, 2024	Mar. 31, 2025
Operating Loss Carryforwards [Line Items]
Decrease in unrecognized tax benefits reasonably possible (up to)		$ 2.7
Groupon S.r.l.
Operating Loss Carryforwards [Line Items]
Income tax examination, estimate of possible loss	$ 32.2	$ 123.5
Provisional payments term	72 months

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Estimated amount of loss resulting from an adverse tax position.

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