Fair Value Measurements - Fair Value of Hierarchy (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Short-term investments:
Certificates of deposit	$ 485,584	$ 374
Total assets measured and recorded at fair value		1,642,016
Certificates of deposit
Short-term investments:
Certificates of deposit		374
Money market funds
Cash equivalents:
Money market funds		1,641,642
Level 1
Short-term investments:
Total assets measured and recorded at fair value		1,641,642
Level 1 | Certificates of deposit
Short-term investments:
Certificates of deposit		0
Level 1 | Money market funds
Cash equivalents:
Money market funds	$ 102,886	1,641,642
Level 2
Short-term investments:
Total assets measured and recorded at fair value		374
Level 2 | Certificates of deposit
Short-term investments:
Certificates of deposit		374
Level 2 | Money market funds
Cash equivalents:
Money market funds		0
Level 3
Short-term investments:
Total assets measured and recorded at fair value		0
Level 3 | Certificates of deposit
Short-term investments:
Certificates of deposit		0
Level 3 | Money market funds
Cash equivalents:
Money market funds		$ 0