Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS - Narrative (Details)

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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 5.4 $ 5.2 $ 16.0 $ 14.4