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Investments - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 30, 2021 | Feb. 01, 2020 | Feb. 02, 2019
Debt Securities, Available-for-sale [Line Items] |  |  |
Realized gains | $ 0.0 | $ 1.0 | $ 0.0
Realized losses | 0.0 |  | $ 0.0
Available-for-sale Securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Assets held by insurance regulators | $ 3.4 | $ 3.7 |

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