GOODWILL AND INTANGIBLE ASSETS, NET - Narrative (Details) - USD ($)	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 563,200,000				$ 563,200,000		$ 673,700,000
Goodwill impairment charge			$ 99,800,000
Benefit from income taxes	(1,900,000)			$ 2,100,000	45,200,000	$ 3,200,000
Finite-lived intangible assets impairment					0		0
Indefinite-lived intangible assets impairment					33,100,000		0
Amortization expense	8,300,000			$ 8,300,000	25,000,000.0	31,900,000
Weighted-average cost of capital | Minimum
Goodwill [Line Items]
Goodwill measurement input		10.50%	10.50%
Weighted-average cost of capital | Maximum
Goodwill [Line Items]
Goodwill measurement input		12.00%	12.00%
Perpetual growth rate
Goodwill [Line Items]
Goodwill measurement input		2.00%	2.00%
Goodwill
Goodwill [Line Items]
Benefit from income taxes	0				8,300,000
Intangible assets
Goodwill [Line Items]
Benefit from income taxes	0				6,900,000
Operating segments
Goodwill [Line Items]
Goodwill	563,200,000				563,200,000		673,700,000
Goodwill impairment charge	0	$ 11,200,000			111,000,000.0	$ 0
Indefinite-lived intangible assets impairment	0				33,100,000
Portfolio | Operating segments
Goodwill [Line Items]
Goodwill	87,800,000				87,800,000		$ 171,100,000
Goodwill impairment charge					83,500,000
Indefinite-lived intangible assets impairment	$ 0				$ 2,500,000
Revlon Reporting Unit
Goodwill [Line Items]
Goodwill		264,900,000	$ 264,700,000
Elizabeth Arden Skin and Color Reporting Unit
Goodwill [Line Items]
Goodwill		67,400,000	67,400,000
Fragrances Reporting Unit
Goodwill [Line Items]
Goodwill		120,800,000	120,800,000
Mass Portfolio Reporting Unit | Portfolio
Goodwill [Line Items]
Goodwill			0
Goodwill impairment charge			54,300,000
Professional Portfolio Reporting Unit | Portfolio
Goodwill [Line Items]
Goodwill		87,600,000	97,200,000
Goodwill impairment charge		9,600,000	19,600,000
Elizabeth Arden Fragrances Reporting Unit | Elizabeth Arden
Goodwill [Line Items]
Goodwill		22,000,000.0	23,500,000
Goodwill impairment charge		1,600,000	25,900,000
Mass Portfolio, Elizabeth Arden Fragrances and Elizabeth Arden Skin and Color Reporting Units | COVID-19
Goodwill [Line Items]
Indefinite-lived intangible assets impairment			$ 24,500,000
Elizabeth Arden Fragrances and Elizabeth Arden Skin And Color Reporting Units | COVID-19
Goodwill [Line Items]
Indefinite-lived intangible assets impairment		$ 8,600,000