v3.26.1
Investments - Components of Gains and Losses on Strategic Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Investment Holdings [Line Items]    
Unrealized gains (losses) recognized, net $ 208 $ (56)
Realized gains (losses) on sales of securities, net 350 (7)
Gains (losses) on strategic investments, net 558 (63)
Publicly traded equity securities    
Investment Holdings [Line Items]    
Unrealized gains (losses) recognized, net (1) (16)
Privately held equity securities    
Investment Holdings [Line Items]    
Unrealized gains (losses) recognized, net 328 7
Privately held equity and other investments    
Investment Holdings [Line Items]    
Impairments on privately held equity securities and other investments $ (119) $ (47)