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Financial Instruments - Schedule of Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Oct. 31, 2025
Jan. 31, 2025
Long-term    
Derivative contract liabilities $ (25) $ (22)
Total 1,970 1,442
Derivative contract assets    
Long-term    
Derivative contract assets, fair value 29 28
Corporate debt securities    
Short-term    
Fair Value 55 79
Long-term    
Fair Value 129 97
U.S. government securities    
Cash equivalents:    
Fair Value 18  
Short-term    
Fair Value 70 74
Long-term    
Fair Value 63 51
Commercial paper    
Short-term    
Fair Value 116 96
Asset-backed securities    
Short-term    
Fair Value 27 19
Long-term    
Fair Value 72 71
Certificates of deposit    
Short-term    
Fair Value 18  
Agency bonds    
Long-term    
Fair Value   40
Other    
Short-term    
Fair Value 3 19
Long-term    
Fair Value 10 8
Agency mortgage-backed securities    
Short-term    
Fair Value 11  
Long-term    
Fair Value 28 40
Mutual funds    
Long-term    
Long-term other assets, fair value 139 118
Money market funds    
Cash equivalents:    
Fair Value 1,001 618
Commercial paper    
Cash equivalents:    
Fair Value 154 85
Certificates of deposit    
Cash equivalents:    
Fair Value 48 38
U.S. government securities    
Cash equivalents:    
Fair Value 18 19
Other    
Cash equivalents:    
Fair Value 4 4
Level 1    
Long-term    
Derivative contract liabilities 0 0
Total 1,140 736
Level 1 | Derivative contract assets    
Long-term    
Derivative contract assets, fair value 0 0
Level 1 | Corporate debt securities    
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 1 | U.S. government securities    
Cash equivalents:    
Fair Value 0  
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 1 | Commercial paper    
Short-term    
Fair Value 0 0
Level 1 | Asset-backed securities    
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 1 | Certificates of deposit    
Short-term    
Fair Value 0  
Level 1 | Agency bonds    
Long-term    
Fair Value   0
Level 1 | Other    
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 1 | Agency mortgage-backed securities    
Short-term    
Fair Value 0  
Long-term    
Fair Value 0  
Level 1 | Mutual funds    
Long-term    
Long-term other assets, fair value 139 118
Level 1 | Money market funds    
Cash equivalents:    
Fair Value 1,001 618
Level 1 | Commercial paper    
Cash equivalents:    
Fair Value 0 0
Level 1 | Certificates of deposit    
Cash equivalents:    
Fair Value 0 0
Level 1 | U.S. government securities    
Cash equivalents:    
Fair Value   0
Level 1 | Other    
Cash equivalents:    
Fair Value 0 0
Level 2    
Long-term    
Derivative contract liabilities (25) (22)
Total 830 706
Level 2 | Derivative contract assets    
Long-term    
Derivative contract assets, fair value 29 28
Level 2 | Corporate debt securities    
Short-term    
Fair Value 55 79
Long-term    
Fair Value 129 97
Level 2 | U.S. government securities    
Cash equivalents:    
Fair Value 18  
Short-term    
Fair Value 70 74
Long-term    
Fair Value 63 51
Level 2 | Commercial paper    
Short-term    
Fair Value 116 96
Level 2 | Asset-backed securities    
Short-term    
Fair Value 27 19
Long-term    
Fair Value 72 71
Level 2 | Certificates of deposit    
Short-term    
Fair Value 18  
Level 2 | Agency bonds    
Long-term    
Fair Value   40
Level 2 | Other    
Short-term    
Fair Value 3 19
Long-term    
Fair Value 10 8
Level 2 | Agency mortgage-backed securities    
Short-term    
Fair Value 11  
Long-term    
Fair Value 28  
Level 2 | Mutual funds    
Long-term    
Long-term other assets, fair value 0 0
Level 2 | Money market funds    
Cash equivalents:    
Fair Value 0 0
Level 2 | Commercial paper    
Cash equivalents:    
Fair Value 154 85
Level 2 | Certificates of deposit    
Cash equivalents:    
Fair Value 48 38
Level 2 | U.S. government securities    
Cash equivalents:    
Fair Value   19
Level 2 | Other    
Cash equivalents:    
Fair Value 4 4
Level 3    
Long-term    
Derivative contract liabilities 0 0
Total 0 0
Level 3 | Derivative contract assets    
Long-term    
Derivative contract assets, fair value 0 0
Level 3 | Corporate debt securities    
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 3 | U.S. government securities    
Cash equivalents:    
Fair Value 0  
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 3 | Commercial paper    
Short-term    
Fair Value 0 0
Level 3 | Asset-backed securities    
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 3 | Certificates of deposit    
Short-term    
Fair Value 0  
Level 3 | Agency bonds    
Long-term    
Fair Value   0
Level 3 | Other    
Short-term    
Fair Value 0 0
Long-term    
Fair Value 0 0
Level 3 | Agency mortgage-backed securities    
Short-term    
Fair Value 0  
Long-term    
Fair Value 0  
Level 3 | Mutual funds    
Long-term    
Long-term other assets, fair value 0 0
Level 3 | Money market funds    
Cash equivalents:    
Fair Value 0 0
Level 3 | Commercial paper    
Cash equivalents:    
Fair Value 0 0
Level 3 | Certificates of deposit    
Cash equivalents:    
Fair Value 0 0
Level 3 | U.S. government securities    
Cash equivalents:    
Fair Value   0
Level 3 | Other    
Cash equivalents:    
Fair Value $ 0 $ 0