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Summary of Significant Accounting Policies - Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Feb. 02, 2020
Accounting Policies [Abstract]    
Outbound fulfillment $ 310,700 $ 182,589
Advertising and marketing 85,835 96,836
Payroll liabilities 72,467 30,791
Accrued expenses and other 133,495 107,273
Total accrued expenses and other current liabilities $ 602,497 $ 417,489