Restructuring Charges (Schedule of Restructuring Activities and Related Accruals) (Details) - USD ($)	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 4,600,000
Restructuring and related costs	6,800,000	$ 2,800,000
Utilized - Cash Payments	(7,700,000)
Ending Balance	3,700,000
Restructuring and Related Cost, Expected Cost	19
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	3,900,000
Restructuring and related costs	4,000,000.0
Utilized - Cash Payments	(4,200,000)
Ending Balance	3,700,000
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	700,000
Restructuring and related costs	2,800,000
Utilized - Cash Payments	(3,500,000)
Ending Balance	$ 0