Restructuring Charges (Schedule of Restructuring Activities and Related Accruals) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Restructuring Reserve [Roll Forward] | ||
| Beginning Balance | $ 2.5 | |
| Restructuring and related costs | 2.8 | $ 2.2 |
| Utilized - Cash Payments | (4.1) | |
| Utilized - Non-Cash | 0.0 | |
| Ending Balance | 1.2 | |
| Employee Severance [Member] | ||
| Restructuring Reserve [Roll Forward] | ||
| Beginning Balance | 1.7 | |
| Restructuring and related costs | 0.9 | |
| Utilized - Cash Payments | (2.2) | |
| Utilized - Non-Cash | 0.0 | |
| Ending Balance | 0.4 | |
| Other Restructuring [Member] | ||
| Restructuring Reserve [Roll Forward] | ||
| Beginning Balance | 0.8 | |
| Restructuring and related costs | 1.9 | |
| Utilized - Cash Payments | (1.9) | |
| Utilized - Non-Cash | 0.0 | |
| Ending Balance | $ 0.8 | |