Restructuring Initiatives (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended								12 Months Ended
	Sep. 30, 2018	Jan. 31, 2016	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 31, 2019
Restructuring charges (benefits) and other costs (benefits)			$ 126.1	$ 19.8	$ 23.7	$ 10.9	$ 23.7	$ 6.2	$ 20.3	$ 10.0	$ 180.5	$ 60.2	$ 77.4
Accelerated depreciation											5.2
Employee-Related Costs
Restructuring charges (benefits) and other costs (benefits)											43.3
Professional Service Fees
Restructuring charges (benefits) and other costs (benefits)											30.9
Asset Impairment
Restructuring charges (benefits) and other costs (benefits)											4.0
Inventory Write-offs
Restructuring charges (benefits) and other costs (benefits)											89.8
Foreign Currency Translation Adjustment Write-offs
Restructuring charges (benefits) and other costs (benefits)											0.7
Dual Running Costs
Restructuring charges (benefits) and other costs (benefits)											4.1
Contract Terminations/Other
Restructuring charges (benefits) and other costs (benefits)											3.2
SG&A expenses
Restructuring charges (benefits) and other costs (benefits)			35.6	19.9	23.2	10.3	23.0	6.2	20.3	10.1	89.0	59.6
Cost of sales
Restructuring charges (benefits) and other costs (benefits)			90.5	$ (0.1)	$ 0.5	$ 0.6	$ 0.7	$ 0.0	$ 0.0	$ (0.1)	91.5	0.6
Transformation Plan
Expected savings before taxes		$ 350.0
Number of years to realized cost savings		3 years
Recorded total costs to implement restructuring initiatives			205.4								205.4
Restructuring charges (benefits) and other costs (benefits)											38.0	60.8	83.7
Accelerated depreciation												1.9	1.9
Transformation Plan | Employee-Related Costs
Restructuring charges (benefits) and other costs (benefits)												26.9	62.6
Transformation Plan | Professional Service Fees
Restructuring charges (benefits) and other costs (benefits)												4.1	7.4
Transformation Plan | Inventory Write-offs
Restructuring charges (benefits) and other costs (benefits)												0.6	0.4
Transformation Plan | Contract Terminations/Other
Restructuring charges (benefits) and other costs (benefits)												27.3	8.7
Transformation Plan | Foreign Currency Translation Adjustment Write-offs
Restructuring charges (benefits) and other costs (benefits)													2.7
Transformation Plan | SG&A expenses
Restructuring charges (benefits) and other costs (benefits)												60.2	83.3
Transformation Plan | Cost of sales
Restructuring charges (benefits) and other costs (benefits)												0.6	0.4
Open Up Avon
Expected savings before taxes	$ 400.0
Recorded total costs to implement restructuring initiatives			$ 143.2								143.2
Restructuring charges (benefits) and other costs (benefits)											143.2
Open Up Avon | Inventory Write-offs
Restructuring charges (benefits) and other costs (benefits)											88.0
Transformation Plan And Open Up Avon
Restructuring charges (benefits) and other costs (benefits)											181.2
Transformation Plan And Open Up Avon | SG&A expenses
Restructuring charges (benefits) and other costs (benefits)											89.7
Transformation Plan And Open Up Avon | Cost of sales
Restructuring charges (benefits) and other costs (benefits)											91.5
Other Restructuring Initiatives
Restructuring charges (benefits) and other costs (benefits)											$ 0.7	0.4	5.5
Net gain on sale of distribution center													$ 3.7
Australia and New Zealand | Transformation Plan | Employee-Related Costs
Restructuring charges (benefits) and other costs (benefits)												$ 7.9
Subsequent Event | Open Up Avon
Expected number of positions eliminated														18.00%
Restructuring and Related Cost, Expected Reduction In Inventory, Percent														15.00%
Restructuring and Related Cost, Expected Reduction In Stock Keeping Units, Percent														25.00%