Special Charges (Schedule of Restructuring Activity) (Details) - USD ($)	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 11,300,000
Expenses	20,000,000.0
Cash payments	(9,700,000)
Restructuring Reserve, Accrual Adjustment	(100,000)
Ending Balance	21,500,000
Special charges	27,100,000	$ 7,800,000
Global Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	1,300,000	4,100,000
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	3,100,000	$ 3,200,000
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	$ 22,700,000