Investments (Tables)

3 Months Ended

Apr. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

As of April 30, 2023 and January 31, 2023, our marketable securities consisted of the following: 

	As of April 30, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	61,013	$	—	$	—	$	61,013
Agency bonds	1,189,447		323		(10,734)		1,179,036
Corporate and other debt securities	521,480		268		(3,982)		517,766
U.S. government agency securities	2,770,605		819		(32,671)		2,738,753
Treasury bills	70,330		—		(53)		70,277
Marketable securities	$	4,612,875	$	1,410	$	(47,440)	$	4,566,845

	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 April 30, 2023 and January 31, 2023:

	As of
	April 30, 2023		January 31, 2023
	(in thousands)
Less than one year	$	2,940,895	$	2,743,677
Due in one to five years	1,625,950		1,582,159
Total	$	4,566,845	$	4,325,836

Schedule of Strategic Investments

Strategic investments by form and measurement category as of April 30, 2023 were as follows:

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	167,694	$	186,232	$	94,624	$	448,550
Debt securities	3,717		—		—		3,717
Strategic investments	$	171,411	$	186,232	$	94,624	$	452,267

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