Restructuring Charges (Schedule of Restructuring and Related Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 5.6	$ 9.4	$ 8.1
Accelerated depreciation	0.8	1.1	1.7
Consulting, project implementation and management and other exit costs	9.8	19.6	28.3
Restructuring and related costs	16.2	30.1	38.1
Project Fuel
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date		163.7
Wet Shave
Restructuring Cost and Reserve [Line Items]
Severance Costs		1.5	0.2
Accelerated depreciation		1.1	1.7
Consulting, project implementation and management and other exit costs		2.7	9.5
Restructuring and related costs		5.3	11.4
Sun and Skin Care
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.1	0.3
Accelerated depreciation		0.0	0.0
Consulting, project implementation and management and other exit costs		0.2	0.8
Restructuring and related costs		0.3	1.1
Feminine Care
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.0	0.0
Accelerated depreciation		0.0	0.0
Consulting, project implementation and management and other exit costs		0.3	0.4
Restructuring and related costs		0.3	0.4
Corporate
Restructuring Cost and Reserve [Line Items]
Severance Costs		7.8	7.6
Accelerated depreciation		0.0	0.0
Consulting, project implementation and management and other exit costs		16.4	17.6
Restructuring and related costs		24.2	25.2
Selling, general and administrative expense | IT enablement
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	$ 0.9	8.7	13.3
Cost of products sold | Obsolescence
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs		$ 0.6	$ 0.2