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Cash Equivalents and Investments (Tables)

6 Months Ended

Jul. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Amortized Costs, Unrealized Gains and Losses and Estimated Fair Value of Cash Equivalents and Short-term Investments

The following tables present the amortized cost, unrealized gain (loss) and estimated fair value of cash equivalents and short-term investments:


	As of July 31, 2023
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
	(dollars in millions)
Level 1:
Cash equivalents:
Money market funds	$	223	$	—	$	—	$	223



Total cash equivalents	223		—		—		223
Level 2:
Short-term investments (Available-for-sale):


U.S. treasury securities	1,730		—		(10)		1,720
Corporate debt securities	30		—		—		30
Total short-term investments	1,760		—		(10)		1,750
Total	$	1,983	$	—	$	(10)	$	1,973


	As of January 31, 2023
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
	(dollars in millions)
Level 1:
Cash equivalents:
Money market funds	$	133	$	—	$	—	$	133



Total cash equivalents	133		—		—		133
Level 2:
Short-term investments (Available-for-sale):


U.S. treasury securities	2,207		—		(22)		2,185
Corporate debt securities	133		—		(2)		131
Total short-term investments	2,340		—		(24)		2,316
Total	$	2,473	$	—	$	(24)	$	2,449

Schedule of Contractual Maturities of Short-term Investments

The following table presents the contractual maturities of the Company’s short-term investments:


	As of July 31, 2023
	Amortized Cost		Estimated Fair Value
	(dollars in millions)
Due within one year	$	1,564	$	1,556
Due between one to five years	196		194
Total	$	1,760	$	1,750

Schedule of Unrealized Loss Position and Fair Value of Debt Securities

The following table presents the fair values and unrealized losses related to the Company’s investments in available-for-sale debt securities classified by length of time that the securities have been in a continuous unrealized loss position as of July 31, 2023:


	Less Than 12 Months				More Than 12 Months				Total
	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
	(dollars in millions)
U.S. treasury securities	$	1,248	$	(5)	$	447	$	(5)	$	1,695	$	(10)
Corporate debt securities	18		—		12		—		30		—
Total	$	1,266	$	(5)	$	459	$	(5)	$	1,725	$	(10)