RESTRUCTURING CHARGES - Reconciliation of Beginning and Ending Restructuring Reserve Balances (Details) $ in Millions |
3 Months Ended |
|---|---|
|
Dec. 31, 2025
USD ($)
| |
| Restructuring Reserve [Roll Forward] | |
| Restructuring reserve, beginning balance | $ 21.7 |
| Costs incurred and charged to expense | 8.2 |
| Costs paid or otherwise settled | (10.7) |
| Restructuring reserve, ending balance | 19.2 |
| Employee Separation Costs | |
| Restructuring Reserve [Roll Forward] | |
| Restructuring reserve, beginning balance | 21.3 |
| Costs incurred and charged to expense | 4.5 |
| Costs paid or otherwise settled | (7.2) |
| Restructuring reserve, ending balance | 18.6 |
| Other Costs | |
| Restructuring Reserve [Roll Forward] | |
| Restructuring reserve, beginning balance | 0.4 |
| Costs incurred and charged to expense | 3.7 |
| Costs paid or otherwise settled | (3.5) |
| Restructuring reserve, ending balance | $ 0.6 |