Summary of Significant Accounting Policies - Vendor Arrangements (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 01, 2020 |
Feb. 02, 2019 |
Feb. 03, 2018 |
|
| Revenue from Contract with Customer [Abstract] | |||
| Cost Of Sales Vendor Allowances | $ 108.5 | $ 143.4 | $ 162.5 |