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Fair Value Measurements - Balance Sheet Items (Details) - USD ($)
$ in Thousands
Aug. 01, 2020
Feb. 01, 2020
Aug. 03, 2019
Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents (Level 1) $ 3,793,043 $ 1,351,205 $ 1,382,025
Restricted cash and cash equivalents (Level 1) 60,872 60,205 61,376
Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investments (Level 2) $ 8 $ 8 $ 8