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Cash Equivalents and Investments (Tables)
 9 Months Ended
Oct. 31, 2025
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 estimated fair value of cash equivalents and short-term investments:
 As of October 31, 2025As of January 31, 2025
 
(dollars in millions)
Cash equivalents: 
Money market funds (Level 1)
$422 $225 
Certificates of deposit (Level 2)
— 23 
Total cash equivalents422 248 
Level 2:
Short-term investments (Available-for-sale):
U.S. treasury securities1,517 1,788 
Corporate debt securities239 281 
Certificates of deposit62 45 
Total short-term investments1,818 2,114 
Total$2,240 $2,362 
Schedule of Contractual Maturities of Short-term Investments
The following table presents the contractual maturities of the Company’s short-term investments:
As of October 31, 2025
 
Estimated Fair Value
(dollars in millions)
Due within one year$1,511 
Due between one to five years307 
 Total$1,818