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Fair Value Measurements (Tables)
 3 Months Ended
Apr. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of Financial Instruments Measured at Fair Value on Recurring Basis
The following tables present information about our financial instruments that are measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value:
As of April 30, 2023
Fair ValueLevel 1Level 2Level 3
(in thousands)
Financial Assets:
Money market funds$503,109 $503,109 $— $— 
Treasury bills7,535 — 7,535 — 
Corporate debt securities257 — 257 — 
Agency bonds58,415 — 58,415 — 
Cash equivalents569,316 503,109 66,207 — 
Commercial paper61,013 — 61,013 — 
Agency bonds1,179,036 — 1,179,036 — 
Corporate and other debt securities517,766 — 517,766 — 
U.S. government agency securities2,738,753 — 2,738,753 — 
Treasury bills70,277 — 70,277 — 
Marketable securities4,566,845 — 4,566,845 — 
Certificates of deposit included in other assets, noncurrent254 — 254 — 
Publicly held equity securities included in strategic investments167,694 167,694 — — 
Privately held debt securities included in strategic investments3,717 — — 3,717 
Total financial assets$5,307,826 $670,803 $4,633,306 $3,717 
As of January 31, 2023
Fair ValueLevel 1Level 2Level 3
(in thousands)
Financial Assets:
Money market funds$310,571 $310,571 $— $— 
Cash equivalents310,571 310,571 — — 
Commercial paper77,701 — 77,701 — 
Agency bonds810,650 — 810,650 — 
Corporate and other debt securities550,894 — 550,894 — 
U.S. government agency securities2,861,215 — 2,861,215 — 
Treasury bills25,376 — 25,376 — 
Marketable securities4,325,836 — 4,325,836 — 
Certificates of deposit included in other assets, noncurrent272 — 272 — 
Publicly held equity securities included in strategic investments171,975 171,975 — — 
Privately held debt securities included in strategic investments14,400 — — 14,400 
Total financial assets$4,823,054 $482,546 $4,326,108 $14,400