Net Loss per Share Attributable to Common Stockholders - Shares Excluded (Details) - shares shares in Thousands	12 Months Ended
	Feb. 06, 2022	Jan. 31, 2021	Feb. 02, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities (In shares)	72,440	80,337	81,218
Stock options to purchase common stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities (In shares)	15,686	23,180	31,315
Unvested RSUs and PRSUs
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities (In shares)	32,491	31,980	24,374
Unvested restricted stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities (In shares)	257	1,145	2,614
Shares related to convertible senior notes
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities (In shares)	21,884	21,884	21,884
Shares issuable pursuant to the ESPP
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities (In shares)	2,122	2,148	1,031