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Financial Instruments - Schedule of Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Apr. 30, 2025
Jan. 31, 2025
Long-term    
Derivative contract liabilities $ (57) $ (22)
Total 1,541 1,442
Derivative contract assets    
Long-term    
Derivative contract assets, fair value 29 28
Corporate debt securities    
Short-term    
Fair Value 76 79
Long-term    
Fair Value 93 97
U.S. government securities    
Cash equivalents:    
Fair Value 39  
Short-term    
Fair Value 66 74
Long-term    
Fair Value 60 51
Commercial paper    
Short-term    
Fair Value 36 96
Asset-backed securities    
Short-term    
Fair Value 23 19
Long-term    
Fair Value 66 71
Certificates of deposit    
Short-term    
Fair Value 10  
Certificates of deposit | Short-term    
Short-term    
Fair Value 10  
Agency bonds    
Long-term    
Fair Value   40
Other    
Short-term    
Fair Value 13 19
Long-term    
Fair Value 8 8
Agency mortgage-backed securities    
Long-term    
Fair Value 34 40
Mutual funds    
Long-term    
Long-term other assets, fair value 120 118
Money market funds    
Cash equivalents:    
Fair Value 750 618
Commercial paper    
Cash equivalents:    
Fair Value 124 85
Certificates of deposit    
Cash equivalents:    
Fair Value 51 38
U.S. government securities    
Cash equivalents:    
Fair Value 39 19
Other    
Cash equivalents:    
Fair Value   4
Level 1    
Long-term    
Derivative contract liabilities 0 0
Total 870 736
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    
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    
Long-term    
Fair Value 0  
Level 1 | Mutual funds    
Long-term    
Long-term other assets, fair value 120 118
Level 1 | Money market funds    
Cash equivalents:    
Fair Value 750 618
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
Level 2    
Long-term    
Derivative contract liabilities (57) (22)
Total 671 706
Level 2 | Derivative contract assets    
Long-term    
Derivative contract assets, fair value 29 28
Level 2 | Corporate debt securities    
Short-term    
Fair Value 76 79
Long-term    
Fair Value 93 97
Level 2 | U.S. government securities    
Cash equivalents:    
Fair Value 39  
Short-term    
Fair Value 66 74
Long-term    
Fair Value 60 51
Level 2 | Commercial paper    
Short-term    
Fair Value 36 96
Level 2 | Asset-backed securities    
Short-term    
Fair Value 23 19
Long-term    
Fair Value 66 71
Level 2 | Certificates of deposit | Short-term    
Short-term    
Fair Value 10  
Level 2 | Agency bonds    
Long-term    
Fair Value   40
Level 2 | Other    
Short-term    
Fair Value 13 19
Long-term    
Fair Value 8 8
Level 2 | Agency mortgage-backed securities    
Long-term    
Fair Value 34  
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 124 85
Level 2 | Certificates of deposit    
Cash equivalents:    
Fair Value 51 38
Level 2 | U.S. government securities    
Cash equivalents:    
Fair Value   19
Level 2 | Other    
Cash equivalents:    
Fair Value   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    
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    
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