Investments (Tables)

6 Months Ended

Jul. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

As of July 31, 2023 and January 31, 2023, our marketable securities consisted of the following: 

	As of July 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	67,269	$	—	$	—	$	67,269
Agency bonds	1,445,880		7		(15,588)		1,430,299
Corporate and other debt securities	543,042		68		(4,635)		538,475
U.S. government agency securities	2,590,023		10		(28,254)		2,561,779
Treasury bills	50,596		—		(25)		50,571
Marketable securities	$	4,696,810	$	85	$	(48,502)	$	4,648,393

	As of January 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	77,701	$	—	$	—	$	77,701
Agency bonds	823,027		63		(12,440)		810,650
Corporate and other debt securities	555,354		385		(4,845)		550,894
U.S. government agency securities	2,910,572		150		(49,507)		2,861,215
Treasury bills	25,404		1		(29)		25,376
Marketable securities	$	4,392,058	$	599	$	(66,821)	$	4,325,836

Schedule of Contractual Maturities of Marketable Securities

The following table presents the contractual maturities of our marketable securities as of July 31, 2023 and January 31, 2023:

	As of
	July 31, 2023		January 31, 2023
	(in thousands)
Less than one year	$	2,757,001	$	2,743,677
Due in one to five years	1,891,392		1,582,159
Total	$	4,648,393	$	4,325,836

Schedule of Strategic Investments

Strategic investments by form and measurement category as of July 31, 2023 were as follows:

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	92,139	$	185,732	$	95,070	$	372,941
Debt securities	3,752		—		—		3,752
Strategic investments	$	95,891	$	185,732	$	95,070	$	376,693

Strategic investments by form and measurement category as of January 31, 2023 were as follows:

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	171,975	$	118,763	$	93,854	$	384,592
Debt securities	14,400		—		—		14,400
Strategic investments	$	186,375	$	118,763	$	93,854	$	398,992