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DISCONTINUED OPERATIONS - Narratives (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Discontinued Operations, Disposed of by Sale | IAC/InterActiveCorp    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Income tax benefit $ 0.5 $ 0.5