RESTRUCTURING CHARGES - Restructuring Reserve (Details) - USD ($) $ in Millions	6 Months Ended	20 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Restructuring Reserve [Roll Forward]
Liability Balance at period start	$ 10.0
Expense, Net	45.5
Foreign Currency Translation	0.0
Cash utilized, net	(12.9)
Non-cash utilized, net	0.0
Liability Balance at period end	42.6	$ 42.6
Revlon 2020 Restructuring Plan | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	0.0
Expense, Net	46.3
Foreign Currency Translation	0.0
Cash utilized, net	(9.0)
Non-cash utilized, net	0.0
Liability Balance at period end	37.3	37.3
Revlon 2020 Restructuring Plan | Other Costs
Restructuring Reserve [Roll Forward]
Liability Balance at period start	0.0
Expense, Net	0.3
Foreign Currency Translation	0.0
Cash utilized, net	(0.3)
Non-cash utilized, net	0.0
Liability Balance at period end	0.0	0.0
Revlon 2020 Restructuring Plan | Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Liability Balance at period start	0.0
Expense, Net	46.6
Foreign Currency Translation	0.0
Cash utilized, net	(9.3)
Non-cash utilized, net	0.0
Liability Balance at period end	37.3	37.3
2018 Optimization Restructuring Program
Restructuring Reserve [Roll Forward]
Expense, Net	0.0
Cash utilized, net		(29.8)
2018 Optimization Restructuring Program | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	5.7
Expense, Net	(0.7)
Foreign Currency Translation	0.0
Cash utilized, net	(3.2)
Non-cash utilized, net	0.0
Liability Balance at period end	1.8	1.8
2018 Optimization Restructuring Program | Other Costs
Restructuring Reserve [Roll Forward]
Expense, Net	0.0
2018 Optimization Restructuring Program | Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Expense, Net	(0.7)
Other immaterial actions | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	4.3
Expense, Net	(0.4)
Foreign Currency Translation	0.0
Cash utilized, net	(0.4)
Non-cash utilized, net	0.0
Liability Balance at period end	$ 3.5	$ 3.5