v3.25.4
Investments - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Investment Holdings [Line Items]      
Interest income from marketable securities $ 539 $ 647 $ 527
Strategic investments 7,591 4,852  
Privately held equity securities      
Investment Holdings [Line Items]      
Upward adjustments 1,500 385  
Downward adjustments 511 583  
One Privately Held Equity Investment      
Investment Holdings [Line Items]      
Upward adjustments 1,200    
Variable Interest Entity, Not Primary Beneficiary      
Investment Holdings [Line Items]      
Strategic investments $ 160 $ 484