GOODWILL AND INTANGIBLE ASSETS, NET - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment charge	$ 0	$ 11,200,000	$ 0	$ 111,000,000.0
Finite-lived intangible assets impairment	0	0	0	0
Indefinite-lived intangible assets impairment	0	8,600,000	0	33,100,000
Amortization expense	$ 8,600,000	$ 8,200,000	$ 17,000,000.0	$ 16,700,000