RESTRUCTURING INITIATIVES (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		12 Months Ended
	Sep. 30, 2018	Jan. 31, 2016	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other costs			$ 43.2	$ 10.9
Open Up Avon
Restructuring Cost and Reserve [Line Items]
Expected annualized savings before taxes	$ 400.0
Restructuring charges and other costs			45.1	0.0
Recorded total costs to implement restructuring initiatives			188.3
Open Up Avon | Inventory/ Asset Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other costs					$ 88.0
Transformation Plan
Restructuring Cost and Reserve [Line Items]
Expected annualized savings before taxes		$ 350.0
Restructuring charges and other costs			(2.0)	10.9
Recorded total costs to implement restructuring initiatives			203.4
Other Restructuring Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charges and other costs			$ 0.1	$ 0.0