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INCOME TAXES - Narrative (Details) - International - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Jul. 31, 2024	Jun. 30, 2024	Oct. 22, 2024	Apr. 09, 2024
Income Taxes [Line Items]
Decrease in unrecognized tax benefits reasonably possible (up to)		$ 5.5
Groupon S.r.l.
Income Taxes [Line Items]
Income tax examination, estimate of possible loss		$ 120.4
Suspension of provisional payment, requested amount				$ 81.9
Appeal bond, amount due				$ 30.0
Groupon S.r.l. | Forecast
Income Taxes [Line Items]
Appeal bond, amount due			$ 51.9
Groupon S.r.l. | Subsequent Event
Income Taxes [Line Items]
Income tax examination, estimate of possible loss	$ 31.5

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

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Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-Publisher FASB
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Estimated amount of loss resulting from an adverse tax position.

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