RESTRUCTURING INITIATIVES - Charges Reportable by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Avon Integration
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments incurred	$ 0.5	$ (0.7)	$ 1.5	$ 10.8
Charges incurred to-date	12.1
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	12.1
Avon Integration | Avon International
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments incurred	0.0	(0.7)	(0.5)	6.2
Charges incurred to-date	5.0
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	5.0
Avon Integration | Avon Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments incurred	0.5	0.0	2.0	4.6
Charges incurred to-date	7.1
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	7.1
Open Up & Grow
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments incurred	4.2	21.1	9.3	2.4	$ 71.6	$ 117.1
Charges incurred to-date	225.7
Estimated charges to be incurred on approved initiatives	0.2
Total expected charges on approved initiatives	225.9
Open Up & Grow | Avon International
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments incurred	4.1	21.1	9.4	3.2	34.7	52.8
Charges incurred to-date	125.3
Estimated charges to be incurred on approved initiatives	0.2
Total expected charges on approved initiatives	125.5
Open Up & Grow | Avon Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments incurred	0.1	$ 0.0	$ (0.1)	$ (0.8)	$ 36.9	$ 64.3
Charges incurred to-date	100.4
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	$ 100.4