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QUARTERLY FINANCIAL DATA (UNAUDITED) - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
QUARTERLY FINANCIAL DATA (UNAUDITED)          
Asset Impairment Charges $ 1.7 $ 29.1 $ 53.6 $ 6.8 $ 3.8