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Deferred Revenue and Commissions - Remaining Performance Obligation (Details) - USD ($)
$ in Thousands
3 Months Ended
May 03, 2020
Apr. 30, 2019
Revenue from Contract with Customer [Abstract]    
Deferred revenue recognized $ 108,700 $ 79,300
Contracted but not recognized revenue $ 912,000  
Contracted but not recognized revenue expected to be recognized in the next 12 months (percent) 42.00%