RESTRUCTURING CHARGES - Restructuring and Related Charges Activity (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Charges incurred during period	$ 44.8
Revlon 2020 Restructuring Plan
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	61.2
Revlon 2020 Restructuring Plan | Employee Severance and Other Personnel Benefits
Restructuring Reserve [Roll Forward]
Charges incurred during period	44.4
Charges incurred through end of period	44.4
Revlon 2020 Restructuring Plan | Other Costs
Restructuring Reserve [Roll Forward]
Charges incurred during period	1.2
Charges incurred through end of period	1.2
Revlon 2020 Restructuring Plan | Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Charges incurred during period	45.6
Charges incurred through end of period	45.6
Revlon 2020 Restructuring Plan | Leases
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	11.3
Revlon 2020 Restructuring Plan | Other Related Charges
Restructuring Reserve [Roll Forward]
Charges incurred through end of period	4.3
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	3.9
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
2018 Optimization Restructuring Program
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	39.5
Charges incurred during period	0.1
Charges incurred through end of period	39.6
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 through end of period	19.7
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 through end of period	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 through end of period	20.0
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
2018 Optimization Restructuring Program | Other Related Charges
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	14.0
Charges incurred during period	0.7
Charges incurred through end of period	$ 14.7