RESTRUCTURING CHARGES - Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended	17 Months Ended
	Mar. 31, 2020	Mar. 31, 2020
Restructuring Reserve [Roll Forward]
Liability Balance at period start	$ 10.0
Expense, Net	24.8
Foreign Currency Translation	(0.1)
Cash utilized, net	(3.6)
Non-cash utilized, net	0.0
Liability Balance at period end	31.1	$ 31.1
Revlon 2020 Restructuring Plan | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	0.0
Expense, Net	25.6
Foreign Currency Translation	0.0
Cash utilized, net	(0.8)
Non-cash utilized, net	0.0
Liability Balance at period end	24.8	24.8
2018 Optimization Restructuring Program
Restructuring Reserve [Roll Forward]
Expense, Net	0.3
Cash utilized, net		(29.1)
2018 Optimization Restructuring Program | Employee severance and other personnel benefits
Restructuring Reserve [Roll Forward]
Liability Balance at period start	5.7
Expense, Net	(0.4)
Foreign Currency Translation	0.0
Cash utilized, net	(2.5)
Non-cash utilized, net	0.0
Liability Balance at period end	2.8	2.8
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	(0.1)
Cash utilized, net	(0.3)
Non-cash utilized, net	0.0
Liability Balance at period end	$ 3.5	$ 3.5