v3.25.1
Segments and Disaggregated Revenue - Segment Revenues and Long-Lived Assets (Details) - USD ($)
$ in Millions
 3 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenues $ 165,609 $ 161,508
Long-lived assets 140,884 131,345
U.S. operations    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenues 135,476 131,291
Long-lived assets 116,186 105,780
Non-U.S. operations    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total revenues 30,133 30,217
Long-lived assets $ 24,698 $ 25,565