INCOME TAXES - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Provision (benefit) for income taxes	$ 0.2	$ 2.2
Change in benefit from income taxes	(2.0)
Deferred tax valuation allowance increase (decrease)	(2.4)	75.0
Tax loss carryforwards	939.7
Tax loss carryforwards - expiring 2020	4.5
Tax loss carryforwards - expiring 2021	2.8
Tax loss carryforwards - expiring 2023 and beyond	615.4
Tax loss carryforwards - unlimited	317.0
Unrecognized tax benefits	78.0	74.7	$ 84.9
Income tax penalties and interest accrued	11.7	9.8	$ 9.0
Unrecognized tax benefits that would impact effective tax rate	46.1
Tax deferred expense	31.9
Unrecognized Tax Benefits, Income Tax Expense (Benefit)	1.9	0.8
Decrease in unrecognized tax benefits is reasonably possible	4.1
Foreign
Income Tax Disclosure [Line Items]
Tax loss carryforwards	310.6
United States
Income Tax Disclosure [Line Items]
Tax loss carryforwards	629.1
Tax Payment
Income Tax Disclosure [Line Items]
Due to related parties, current	2.3
Revlon Consumer Products Corporation
Income Tax Disclosure [Line Items]
Provision (benefit) for income taxes	1.6	$ 3.4
Change in benefit from income taxes	$ (1.8)