Cash and Cash Equivalents, Investments and Fair Value Measurements (Tables)

3 Months Ended

Apr. 30, 2022

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets Measured on Recurring Basis

The following table summarizes information about our cash and cash equivalents, and short-term investments by investment category (in thousands):

	As of April 30, 2022
	Fair Value Level	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash and cash equivalents:
Cash		$	26,991	$	—	$	—	$	26,991
Money market funds	Level 1	592,161		—		—		592,161
Commercial paper	Level 2	74,969		—		(9)		74,960
U.S. Treasury securities	Level 1	71,989		—		—		71,989
Total cash and cash equivalents		$	766,110	$	—	$	(9)	$	766,101
Short-term investments:
Certificates of deposit	Level 2	$	357	$	—	$	—	$	357
Commercial paper	Level 2	367,072		—		(498)		366,574
Corporate notes and bonds	Level 2	47,333		—		(200)		47,133
U.S. Treasury securities	Level 1	435,879		1		(518)		435,362
U.S. agency securities	Level 2	2,005		—		(13)		1,992
Total short-term investments		$	852,646	$	1	$	(1,229)	$	851,418

The following table summarizes the respective fair value and the classification by level within the fair value hierarchy (in thousands):

	As of January 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market funds	$	1,641,642	$	—	$	—	$	1,641,642
Short-term investments:
Certificates of deposit	—		374		—		374
Total assets measured and recorded at fair value	$	1,641,642	$	374	$	—	$	1,642,016