Restructuring Charges (Schedule of Restructuring Activities and Related Accruals) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restructuring Reserve [Roll Forward]
Restructuring and related costs	[1]	$ 8.2	$ 10.4	$ 18.1	$ 30.8
Project Fuel
Restructuring Reserve [Roll Forward]
Beginning Balance				5.4
Restructuring and related costs		8.2	$ 10.4	18.1	$ 30.8
Other	[2]			0.1
Utilized - Cash Payments				(19.0)
Utilized - Non-Cash				(0.4)
Ending Balance		4.2		4.2
Employee Severance [Member] | Project Fuel
Restructuring Reserve [Roll Forward]
Beginning Balance				4.3
Restructuring and related costs				5.6
Other	[2]			0.1
Utilized - Cash Payments				(9.6)
Utilized - Non-Cash				0.0
Ending Balance		0.4		0.4
Asset Impairment and Accelerated Depreciation [Member] | Project Fuel
Restructuring Reserve [Roll Forward]
Beginning Balance				0.0
Restructuring and related costs				0.4
Other	[2]			0.0
Utilized - Cash Payments				0.0
Utilized - Non-Cash				(0.4)
Ending Balance		0.0		0.0
Other Restructuring [Member] | Project Fuel
Restructuring Reserve [Roll Forward]
Beginning Balance				1.1
Restructuring and related costs				12.1
Other	[2]			0.0
Utilized - Cash Payments				(9.4)
Utilized - Non-Cash				0.0
Ending Balance		$ 3.8		$ 3.8

[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.

[2] Includes the impact of currency translation.