DEBT - Components of Long-term Debt, Footnotes (Details)						1 Months Ended	2 Months Ended	3 Months Ended			9 Months Ended			12 Months Ended
		May 07, 2020 USD ($)	May 04, 2020 EUR (€)	May 03, 2020	Apr. 30, 2020	May 31, 2020 EUR (€)	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 EUR (€)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)		Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2020 EUR (€)	Sep. 28, 2020 USD ($)	Apr. 17, 2020 USD ($)	Apr. 30, 2018 USD ($)
Debt Instrument [Line Items]
Current portion of long-term debt								$ 704,500,000			$ 704,500,000			$ 288,000,000.0
Gain on extinguishment of debt								31,200,000		$ 0	43,100,000		$ 0
Outstanding borrowings								3,631,000,000.0			3,631,000,000.0			3,194,200,000
Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Current portion of long-term debt								704,500,000			704,500,000			288,000,000.0
Gain on extinguishment of debt								$ 31,200,000		$ 0	$ 43,100,000		0
5.75% Senior Notes due 2021
Debt Instrument [Line Items]
Stated interest rate (as a percent)								5.75%			5.75%				5.75%
Repayments of senior debt											$ 114,100,000		0
Outstanding borrowings								$ 341,700,000			$ 341,700,000			498,100,000
5.75% Senior Notes due 2021 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Stated interest rate (as a percent)								5.75%			5.75%				5.75%
Aggregate principal amount outstanding								$ 342,800,000			$ 342,800,000
Repayments of senior debt											114,100,000		0
Debt repurchased		$ 50,000,000					$ 62,800,000	44,400,000			157,200,000
Gain on extinguishment of debt								31,200,000			43,100,000
Amended 2016 Revolving Credit Facility due 2021
Debt Instrument [Line Items]
Current portion of long-term debt								290,200,000			290,200,000			269,900,000
Outstanding borrowings								290,200,000			290,200,000			269,900,000
Amended 2016 Revolving Credit Facility due 2021 | Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity								400,000,000.0			400,000,000.0
2018 Foreign Asset-Based Term Facility due 2021
Debt Instrument [Line Items]
Repayments of senior debt											31,400,000		0
Outstanding borrowings								54,600,000			54,600,000			82,300,000
2018 Foreign Asset-Based Term Facility due 2021 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								56,800,000			56,800,000
Repayments of senior debt						€ 5,000,000			€ 28,500,000		31,400,000		0
Maximum borrowing capacity | €			€ 77,000,000												€ 77,000,000
Variable rate floor			0.50%
Basis spread on variable interest rate			7.00%
2018 Foreign Asset-Based Term Facility due 2021 | Revlon Consumer Products Corporation | EURIBOR
Debt Instrument [Line Items]
Variable rate floor				0.50%	0.50%	0.50%
Basis spread on variable interest rate				6.50%	6.50%	7.00%
2016 Term Loan Facility due 2023 and 2025
Debt Instrument [Line Items]
Current portion of long-term debt								9,200,000			9,200,000
Repayment of debt														18,000,000.0
Repayments of senior debt											9,200,000		13,500,000
Outstanding borrowings								875,200,000			875,200,000			1,713,600,000
2016 Term Loan Facility due 2023 and 2025 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								886,300,000			886,300,000
Repayments of senior debt											9,200,000		$ 13,500,000
2016 Term Loan Facility due 2023 and 2025 | Revolving credit facility | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Amount by which available liquidity does not exceed principal amount of other debt																		$ 200,000,000
2020 BrandCo Term Loan Facility due 2025
Debt Instrument [Line Items]
Current portion of long-term debt								8,600,000			8,600,000
Outstanding borrowings								1,625,200,000			1,625,200,000			0
2020 BrandCo Term Loan Facility due 2025 | Secured debt | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								1,761,300,000			1,761,300,000
Roll-up and Junior Roll-up BrandCo Facilities due 2025 | Secured debt | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding							$ 846,000,000.0	846,000,000.0			846,000,000.0
2019 Term Loan Facility due 2023
Debt Instrument [Line Items]
Repayments of senior debt	[1]										200,000,000.0
Outstanding borrowings								0			0			187,100,000
2019 Term Loan Facility due 2023 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Debt issuance costs, prepayment premiums		33,500,000
Debt issuance costs, lenders fees		10,300,000
Repayments of senior debt		$ 200,000,000									200,000,000.0	[2]
Tranche A | Revolving credit facility | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								291,900,000			291,900,000
Maximum borrowing capacity																		400,000,000
Amount by which available liquidity does not exceed principal amount of other debt																		200,000,000
Tranche A | Sublimit, letters of credit | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								1,400,000			1,400,000
Tranche B | Revolving credit facility | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Maximum borrowing capacity																		$ 41,500,000
Outstanding borrowings																	$ 36,300,000
2016 Term Loan Facility due 2023 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								855,600,000			855,600,000
Extended Term Loans due 2025 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Aggregate principal amount outstanding								$ 30,700,000			$ 30,700,000
6.25% Senior Notes due 2024
Debt Instrument [Line Items]
Stated interest rate (as a percent)								6.25%			6.25%				6.25%
Outstanding borrowings								$ 443,800,000			$ 443,800,000			$ 442,800,000
6.25% Senior Notes due 2024 | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Stated interest rate (as a percent)								6.25%			6.25%				6.25%
Aggregate principal amount outstanding								$ 450,000,000			$ 450,000,000
2020 Restated Line of Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity								30,000,000.0			30,000,000.0
2020 Restated Line of Credit Facility | Secured debt | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Maximum borrowing capacity																$ 30,000,000.0
Outstanding borrowings								$ 0			$ 0
New European ABL FILO Facility | Secured debt | Revlon Consumer Products Corporation
Debt Instrument [Line Items]
Maximum borrowing capacity																$ 30,000,000

[1] The Company fully repaid the 2019 Term Loan Facility in May 2020.

[2] The Company fully repaid the 2019 Term Loan Facility in May 2020.