Restructuring Charges (Schedule of Restructuring Activities and Related Accruals) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
Restructuring Reserve [Roll Forward] | ||||
Restructuring and related costs | $ 12.2 | $ 3.2 | $ 16.4 | $ 10.0 |
Ending Balance | 18.2 | 18.2 | ||
Employee Severance [Member] | ||||
Restructuring Reserve [Roll Forward] | ||||
Beginning Balance | 20.7 | |||
Utilized - Cash Payments | (2.3) | |||
Utilized - Non-Cash | (1.8) | |||
Ending Balance | 16.6 | 16.6 | ||
Other Restructuring [Member] | ||||
Restructuring Reserve [Roll Forward] | ||||
Beginning Balance | 0.7 | |||
Utilized - Cash Payments | (11.6) | |||
Utilized - Non-Cash | (2.2) | |||
Ending Balance | $ 1.6 | 1.6 | ||
Asset Impairment and Accelerated Depreciation [Member] | ||||
Restructuring Reserve [Roll Forward] | ||||
Utilized - Non-Cash | $ (1.7) |