Restructuring Charges (Schedule of Charges Related to Restructuring Activities) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Total restructuring	[1]	$ 8.2	$ 10.4	$ 18.1	$ 30.8
Project Fuel
Restructuring Cost and Reserve [Line Items]
Severance Costs		1.3	5.2	5.6	7.2
Asset Impairment and Accelerated Depreciation		0.2	0.6	0.4	1.6
Other Restructuring Costs		6.7	4.6	12.1	22.0
Total restructuring		8.2	10.4	18.1	30.8
Project Fuel | Wet Shave
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.7	0.0	1.6	0.2
Asset Impairment and Accelerated Depreciation		0.2	0.6	0.4	1.6
Other Restructuring Costs		0.3	1.9	1.1	7.7
Total restructuring		1.2	2.5	3.1	9.5
Project Fuel | Sun and Skin Care
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.0	0.2	0.1	0.2
Asset Impairment and Accelerated Depreciation		0.0	0.0	0.0	0.0
Other Restructuring Costs		0.0	0.2	0.1	0.4
Total restructuring		0.0	0.4	0.2	0.6
Project Fuel | Feminine Care
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.0	0.0	0.0	0.0
Asset Impairment and Accelerated Depreciation		0.0	0.0	0.0	0.0
Other Restructuring Costs		0.3	0.1	0.3	0.3
Total restructuring		0.3	0.1	0.3	0.3
Project Fuel | Corporate
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.6	5.0	3.9	6.8
Asset Impairment and Accelerated Depreciation		0.0	0.0	0.0	0.0
Other Restructuring Costs		6.1	2.4	10.6	13.6
Total restructuring		$ 6.7	$ 7.4	$ 14.5	$ 20.4

[1] Includes pre-tax SG&A of $2.8 and $6.2 for the three and nine months ended June 30, 2021, respectively, and $2.3 and $10.0 for the three and nine months ended June 30, 2020, respectively, associated with certain information technology enablement expenses and incentive and retention compensation expenses for Project Fuel. Additionally, pre-tax Cost of products sold of $0.2 and $0.3 for the three and nine months ended June 30, 2021, respectively, and $0.1 and $0.2 for the three and nine months ended June 30, 2020, respectively, related to inventory write-offs associated with Project Fuel is included.