FINANCIAL INSTRUMENTS - Additional Information (Details) - USD ($)	1 Months Ended
	Nov. 30, 2013	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016	Sep. 07, 2016	Aug. 04, 2016	May 31, 2015
Fair Value Measurements Of Financial Instruments [Line Items]
Accumulated income (loss)		$ 988,200,000		$ 770,400,000
FX Contracts		$ 100,000		600,000
6.25% Senior Notes
Fair Value Measurements Of Financial Instruments [Line Items]
Stated interest rate		6.25%
Revlon Consumer Products Corporation | 6.25% Senior Notes
Fair Value Measurements Of Financial Instruments [Line Items]
Stated interest rate		6.25%						6.25%
Deferred gain - hedging
Fair Value Measurements Of Financial Instruments [Line Items]
Accumulated income (loss)		$ 0		700,000
Foreign exchange contracts
Fair Value Measurements Of Financial Instruments [Line Items]
Derivative, notional amount		0		147,100,000
Interest rate swap
Fair Value Measurements Of Financial Instruments [Line Items]
Derivative, notional amount	$ 400,000,000	400,000,000
Floor interest rate (percent)	1.00%					0.75%
Term of contract	3 years
Fixed interest rate (percent)									2.0709%
Fixed interest rate on debt (percent)									5.5709%
Accumulated deferred losses, gross							$ 6,300,000
Interest rate swap | Deferred gain - hedging
Fair Value Measurements Of Financial Instruments [Line Items]
Accumulated income (loss)		0	$ 1,800,000	700,000	$ 1,200,000	$ 3,000,000	$ 3,900,000
Standby letters of credit which support Products Corporation self insurance programs
Fair Value Measurements Of Financial Instruments [Line Items]
Standby and trade letters of credit for various corporate purposes		7,200,000		7,300,000
Sublimit, letters of credit | Revlon Consumer Products Corporation | 2016 Revolving Credit Facility
Fair Value Measurements Of Financial Instruments [Line Items]
Standby and trade letters of credit for various corporate purposes		$ 10,100,000		$ 10,100,000