RESTRUCTURING CHARGES - Restructuring and Related Charges Activity (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Charges incurred during period	$ 49.7	$ 12.8
Revlon 2020 Restructuring Plan
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	68.8
Revlon 2020 Restructuring Plan \| Employee Severance and Other Personnel Benefits
Restructuring Reserve [Roll Forward]
Charges incurred during period	48.6
Charges incurred through end of period	48.6
Revlon 2020 Restructuring Plan \| Other Costs
Restructuring Reserve [Roll Forward]
Charges incurred during period	1.9
Charges incurred through end of period	1.9
Revlon 2020 Restructuring Plan \| Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Charges incurred during period	50.5
Charges incurred through end of period	50.5
Revlon 2020 Restructuring Plan \| Leases
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	12.6
Revlon 2020 Restructuring Plan \| Accelerated Rent Expense, Abandoned Leases
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	3.5
Revlon 2020 Restructuring Plan \| Disposal of Leasehold Improvements and Other Equipment
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	3.0
Revlon 2020 Restructuring Plan \| Restructuring Related Rent Expense
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	5.2
Revlon 2020 Restructuring Plan \| Disposal of Leasehold Improvements and Other Equipment, Abandoned Leases
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	0.9
Revlon 2020 Restructuring Plan \| Other Related Charges
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	5.7
2018 Optimization Restructuring Program
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	39.5
Charges incurred during period	0.2
Charges incurred through end of period	39.7	39.5
2018 Optimization Restructuring Program \| Employee Severance and Other Personnel Benefits
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	20.3
Charges incurred during period	(0.6)
Charges incurred during period		15.8
Charges incurred through end of period	19.7	20.3
2018 Optimization Restructuring Program \| Other Costs
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	0.3
Charges incurred during period	0.0
Charges incurred during period		0.3
Charges incurred through end of period	0.3	0.3
2018 Optimization Restructuring Program \| Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	20.6
Charges incurred during period	(0.6)
Charges incurred during period		16.1
Charges incurred through end of period	20.0	20.6
2018 Optimization Restructuring Program \| Inventory Adjustments
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	4.9
Charges incurred during period	0.0
Charges incurred through end of period	4.9	4.9
2018 Optimization Restructuring Program \| Other Related Charges
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	14.0
Charges incurred during period	0.8
Charges incurred through end of period	$ 14.8	$ 14.0

Amount of costs incurred to date for the specified restructuring cost.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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