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Goodwill and Intangibles - Summary of Future Amortization (Details) - USD ($)
$ in Millions
Feb. 02, 2019
Feb. 03, 2018
Intangible assets, net amortization    
2020 $ 0.9  
2021 0.9  
2022 0.8  
2023 0.6  
Net carrying amount 3.2 $ 3.1
Intangible liabilities amortization    
2020 (5.5)  
2021 (5.4)  
2022 (5.4)  
2023 (5.1)  
Total $ (21.4)