v3.25.4
Fair Value Measurements - Carrying Value and Fair Value of Long-Term Debt (Details) - USD ($)
$ in Millions
Jan. 31, 2026
Jan. 31, 2025
Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, including amounts due within one year $ 38,166 $ 35,999
Equity investments measured using Level 2 inputs | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt, including amounts due within one year $ 36,777 $ 33,790