INCOME TAXES - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		3 Months Ended			12 Months Ended
	Dec. 31, 2020	Jul. 31, 2020	Jun. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Tax Contingency [Line Items]
Income tax (benefit) expense				$ 13.8	$ (38.4)
Effective tax rate				34.50%	(65.90%)
Income tax benefit, CARES Act					$ (39.4)
Tax benefit from net operating losses carry back related to CARES Act						$ 44.4
Proceeds from income tax refunds, CARES Act	$ 62.0	$ 48.0
Income taxes receivable, net operating loss, CARES Act	64.2
Interest on income tax expense, CARES Act	$ 2.2
Forecast
Income Tax Contingency [Line Items]
Tax adjustment provision (benefit)			$ (5.5)
Internal Revenue Service | Tax Year 2019
Income Tax Contingency [Line Items]
Income tax refund, CARES Act				$ (1.0)