LEASES - Lease cost (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Oct. 31, 2025 |
Oct. 31, 2024 |
Oct. 31, 2025 |
Oct. 31, 2024 |
|
| Lease, Cost [Abstract] | ||||
| Variable lease costs and short-term lease costs including rent forgiveness | $ 4.5 | $ 5.0 | $ 12.4 | $ 16.1 |
| Selling, general and administrative expenses | ||||
| Lease, Cost [Abstract] | ||||
| Lease costs | $ 18.3 | $ 19.0 | $ 54.3 | $ 55.2 |