Fair Value Measurements - Balance Sheet Items (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 30, 2021	Aug. 01, 2020
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents (Level 1)	$ 5,569,071	$ 4,819,293	$ 3,793,043
Restricted cash and cash equivalents (Level 1)	60,007	134,476	60,872
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments (Level 2)	$ 8	$ 8	$ 8