Investments (Tables)

9 Months Ended

Oct. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

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

	As of October 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Commercial paper	$	40,432	$	—	$	—	$	40,432
Agency bonds	643,133		—		(16,989)		626,144
Corporate and other debt securities	394,948		—		(7,686)		387,262
U.S. government agency securities	3,029,886		14		(71,343)		2,958,557
Treasury bills	56,554		—		(131)		56,423
Marketable securities	$	4,164,953	$	14	$	(96,149)	$	4,068,818

	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 October 31, 2022 and January 31, 2022:

	As of
	October 31, 2022		January 31, 2022
	(in thousands)
Less than one year	$	2,726,471	$	2,387,139
Due in one to five years	1,342,347		1,969,307
Total	$	4,068,818	$	4,356,446

Schedule of Strategic Investments

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

	Measurement Category
	Fair Value		Measurement Alternative		Equity Method		Total
	(in thousands)
Equity securities	$	132,405	$	114,764	$	93,096	$	340,265
Debt securities	14,284		—		—		14,284
Strategic investments	$	146,689	$	114,764	$	93,096	$	354,549

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