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Net Loss Per Share - Schedule of Antidilutive Securities Excluded from Computation of Loss Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	32,737	26,166	32,737	26,166
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	3,826	5,477	3,826	5,477
Restricted stock units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	23,342	19,295	23,342	19,295
Performance-based restricted stock units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	5,049	944	5,049	944
Vesting percentage			100.00%
Performance-based restricted stock units \| Minimum
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Vesting percentage			0.00%
Performance-based restricted stock units \| Maximum
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Vesting percentage			200.00%
Shares issuable pursuant to the 2020 Employee Stock Purchase Plan
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities (in shares)	520	450	520	450