Investments (Tables)

12 Months Ended

Jan. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

As of January 31, 2023 and 2022, our marketable securities consisted of the following: 

	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

	As of January 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	28,723	$	—	$	—	$	28,723
Agency bonds	632,935		2		(3,328)		629,609
Corporate and other debt securities	282,124		5		(1,202)		280,927
U.S. government agency securities	3,046,742		28		(19,261)		3,027,509
Treasury bills	389,826		—		(148)		389,678
Marketable securities	$	4,380,350	$	35	$	(23,939)	$	4,356,446

Schedule of Contractual Maturities of Marketable Securities

The following table presents the contractual maturities of our marketable securities as of January 31, 2023 and 2022:

	As of January 31,
	2023		2022
	(in thousands)
Less than one year	$	2,743,677	$	2,387,139
Due in one to five years	1,582,159		1,969,307
Total	$	4,325,836	$	4,356,446

Schedule of Investments Holdings

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

Strategic investments by form and measurement category as of January 31, 2022 were as follows:

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	168,784	$	91,399	$	93,400	$	353,583
Debt securities	14,231		—		—		14,231
Strategic investments	$	183,015	$	91,399	$	93,400	$	367,814