RESTRUCTURING INITIATIVES (Charges Reportable by Business Segment) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Open Up Avon
Restructuring Cost and Reserve [Line Items]
Charges incurred	$ 3.6	$ 71.6	$ 117.1
Charges incurred to-date	192.3
Estimated charges to be incurred on approved initiatives	2.9
Total expected charges on approved initiatives	195.2
Open Up Avon | Avon International
Restructuring Cost and Reserve [Line Items]
Charges incurred	3.5	19.4	46.6
Charges incurred to-date	69.5
Estimated charges to be incurred on approved initiatives	2.9
Total expected charges on approved initiatives	72.4
Open Up Avon | Avon Latin America
Restructuring Cost and Reserve [Line Items]
Charges incurred	(0.1)	36.9	64.3
Charges incurred to-date	101.1
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	101.1
Open Up Avon | Global & Other Operating Segments
Restructuring Cost and Reserve [Line Items]
Charges incurred	0.2	15.3	6.2
Charges incurred to-date	21.7
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	21.7
Transformation Plan
Restructuring Cost and Reserve [Line Items]
Charges incurred	(2.8)	(0.4)	23.7	$ 54.8	$ 74.4	$ 21.4
Charges incurred to-date	171.1
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	171.1
Transformation Plan | Avon International
Restructuring Cost and Reserve [Line Items]
Charges incurred	0.1	(1.3)	5.6	0.4	40.0	0.0
Charges incurred to-date	44.8
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	44.8
Transformation Plan | Avon Latin America
Restructuring Cost and Reserve [Line Items]
Charges incurred	0.1	0.6	4.7	5.0	17.6	0.0
Charges incurred to-date	28.0
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	28.0
Transformation Plan | Global & Other Operating Segments
Restructuring Cost and Reserve [Line Items]
Charges incurred	(3.0)	$ 0.3	$ 13.4	$ 49.4	$ 16.8	$ 21.4
Charges incurred to-date	98.3
Estimated charges to be incurred on approved initiatives	0.0
Total expected charges on approved initiatives	$ 98.3