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INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Effective tax rates (as a percent) 115.60% 32.20% (40.00%) 9.80%
Deferred tax benefit on impairment charge       $ 125.5