REVLON, INC. BASIC AND DILUTED EARNINGS (LOSS) PER COMMON SHARE - Components of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Loss from operations, net of taxes	$ (206.9)	$ (619.0)
Net (loss) income	$ (206.9)	$ (619.0)
Denominator:
Weighted-average common shares outstanding - Basic (in shares)	53,934,179	53,401,324
Effect of dilutive restricted stock and RSUs (in shares)	0	0
Weighted-average common shares outstanding - Diluted (in shares)	53,934,179	53,401,324
Basic and Diluted (loss) earnings per common share:
Basic net loss (in dollars per share)	$ (3.84)	$ (11.59)
Diluted Net loss (in dollars per share)	$ (3.84)	$ (11.59)
Restricted Stock and Restricted Stock Units
Basic and Diluted (loss) earnings per common share:
Unvested restricted stock and RSUs under the Stock Plan (in shares)	681,023	0