v3.26.1
Investments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Investment Holdings [Line Items]        
Interest income from marketable securities $ 97 $ 150 $ 206 $ 319
Privately held equity securities        
Investment Holdings [Line Items]        
Upward adjustments 2,900 13 3,200 34
Downward adjustments 296 $ 85 408 $ 145
Anthropic PBC        
Investment Holdings [Line Items]        
Upward adjustments $ 2,700   $ 3,000