Fair Value Measurements - Schedule of Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Assets
Short-term investments	$ 2,216,163	$ 1,238,064
U.S. treasury securities
Assets
Short-term investments	316,197	288,804
Corporate notes and bonds
Assets
Short-term investments	1,207,964	663,909
Certificates of deposits
Assets
Short-term investments	37,963	13,485
Asset-backed securities
Assets
Short-term investments	442,958	190,289
Commercial paper
Assets
Short-term investments	154,525	29,430
Foreign government bonds
Assets
Short-term investments	24,151	24,411
U.S. agency obligations
Assets
Short-term investments	32,405	27,736
Fair value, measurements recurring
Assets
Total financial assets	2,426,929	1,676,118
Fair value, measurements recurring \| Money market funds
Assets
Cash equivalents:	180,895	428,411
Fair value, measurements recurring \| U.S. treasury securities
Assets
Cash equivalents:	22,929
Short-term investments	316,197	288,804
Fair value, measurements recurring \| Corporate notes and bonds
Assets
Cash equivalents:	6,691	5,853
Short-term investments	1,207,964	663,909
Fair value, measurements recurring \| Certificates of deposits
Assets
Short-term investments	37,963	13,485
Fair value, measurements recurring \| Asset-backed securities
Assets
Cash equivalents:		2,568
Short-term investments	442,958	190,289
Fair value, measurements recurring \| Commercial paper
Assets
Short-term investments	154,525	29,430
Fair value, measurements recurring \| Foreign government bonds
Assets
Short-term investments	24,151	24,411
Fair value, measurements recurring \| U.S. agency obligations
Assets
Short-term investments	32,405	27,736
Fair value, measurements recurring \| Foreign currency derivative contracts
Assets
Short-term investments	251	1,222
Fair value, measurements recurring \| Level 1
Assets
Total financial assets	180,895	428,411
Fair value, measurements recurring \| Level 1 \| Money market funds
Assets
Cash equivalents:	180,895	428,411
Fair value, measurements recurring \| Level 1 \| U.S. treasury securities
Assets
Cash equivalents:	0
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| Corporate notes and bonds
Assets
Cash equivalents:	0	0
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| Certificates of deposits
Assets
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| Asset-backed securities
Assets
Cash equivalents:		0
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| Commercial paper
Assets
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| Foreign government bonds
Assets
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| U.S. agency obligations
Assets
Short-term investments	0	0
Fair value, measurements recurring \| Level 1 \| Foreign currency derivative contracts
Assets
Short-term investments	0	0
Fair value, measurements recurring \| Level 2
Assets
Total financial assets	2,246,034	1,247,707
Fair value, measurements recurring \| Level 2 \| Money market funds
Assets
Cash equivalents:	0	0
Fair value, measurements recurring \| Level 2 \| U.S. treasury securities
Assets
Cash equivalents:	22,929
Short-term investments	316,197	288,804
Fair value, measurements recurring \| Level 2 \| Corporate notes and bonds
Assets
Cash equivalents:	6,691	5,853
Short-term investments	1,207,964	663,909
Fair value, measurements recurring \| Level 2 \| Certificates of deposits
Assets
Short-term investments	37,963	13,485
Fair value, measurements recurring \| Level 2 \| Asset-backed securities
Assets
Cash equivalents:		2,568
Short-term investments	442,958	190,289
Fair value, measurements recurring \| Level 2 \| Commercial paper
Assets
Short-term investments	154,525	29,430
Fair value, measurements recurring \| Level 2 \| Foreign government bonds
Assets
Short-term investments	24,151	24,411
Fair value, measurements recurring \| Level 2 \| U.S. agency obligations
Assets
Short-term investments	32,405	27,736
Fair value, measurements recurring \| Level 2 \| Foreign currency derivative contracts
Assets
Short-term investments	$ 251	$ 1,222

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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