Investments - Schedule of Available-for-sale Marketable Debt Securities Recorded Within Short-term and Long-term Investments (Details) - USD ($) $ in Thousands	Aug. 01, 2026	Jan. 31, 2026
Investments
Amortized Cost	$ 1,037,759	$ 915,970
Gross Unrealized Gains	141	2,356
Gross Unrealized Losses	(3,582)	(200)
Estimated Fair Value	1,034,318	918,126
Commercial paper
Investments
Amortized Cost	137,127	137,590
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	137,127	137,590
Corporate notes and bonds
Investments
Amortized Cost	599,873	486,144
Gross Unrealized Gains	119	1,849
Gross Unrealized Losses	(2,480)	(148)
Estimated Fair Value	597,512	487,845
U.S. government, agency, and municipal securities
Investments
Amortized Cost	300,759
Gross Unrealized Gains	22
Gross Unrealized Losses	(1,102)
Estimated Fair Value	$ 299,679
U.S. government and agency securities
Investments
Amortized Cost		292,236
Gross Unrealized Gains		507
Gross Unrealized Losses		(52)
Estimated Fair Value		$ 292,691

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
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-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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