Revenue recognition - Unamortized Deferred Transaction Costs (Details) - USD ($) $ in Millions |
Aug. 01, 2026 |
Jan. 31, 2026 |
Aug. 02, 2025 |
|---|---|---|---|
| Revenue from Contract with Customer [Abstract] | |||
| Other current assets | $ 28.0 | $ 28.6 | $ 27.9 |
| Other assets | 79.4 | 80.8 | 80.1 |
| Total deferred ESP transaction costs | $ 107.4 | $ 109.4 | $ 108.0 |