v3.26.1
Borrowings - Schedule of Long-Term Debt (Details) - USD ($)
Apr. 30, 2026
Oct. 31, 2025
Long-term debt    
Fair value adjustment related to hedged debt $ 0 $ (1,000,000)
Unamortized debt issuance cost (40,000,000) (46,000,000)
Current portion of long-term debt (810,000,000) (788,000,000)
Total long-term debt 8,856,000,000 8,821,000,000
U.S. Dollar Global Notes    
Long-term debt    
Long-term debt 8,892,000,000 8,891,000,000
$1,000 issued June 2021    
Long-term debt    
Face amount of debt instrument $ 1,000,000,000  
Discount to par (percent) 99.808%  
Interest rate (percent) 1.45%  
Long-term debt $ 522,000,000 522,000,000
$1,000 issued June 2020    
Long-term debt    
Face amount of debt instrument $ 1,000,000,000  
Discount to par (percent) 99.718%  
Interest rate (percent) 3.00%  
Long-term debt $ 1,000,000,000 999,000,000
$900 issued June 2022    
Long-term debt    
Face amount of debt instrument $ 900,000,000  
Discount to par (percent) 99.841%  
Interest rate (percent) 4.75%  
Long-term debt $ 899,000,000 899,000,000
$1,000 issued March 2022    
Long-term debt    
Face amount of debt instrument $ 1,000,000,000  
Discount to par (percent) 99.767%  
Interest rate (percent) 4.00%  
Long-term debt $ 999,000,000 999,000,000
$500 issued April 2025    
Long-term debt    
Face amount of debt instrument $ 500,000,000  
Discount to par (percent) 99.732%  
Interest rate (percent) 5.40%  
Long-term debt $ 499,000,000 499,000,000
$850 issued June 2020    
Long-term debt    
Face amount of debt instrument $ 850,000,000  
Discount to par (percent) 99.79%  
Interest rate (percent) 3.40%  
Long-term debt $ 503,000,000 503,000,000
$1,000 issued June 2021    
Long-term debt    
Face amount of debt instrument $ 1,000,000,000  
Discount to par (percent) 99.573%  
Interest rate (percent) 2.65%  
Long-term debt $ 998,000,000 998,000,000
$1,000 issued March 2022    
Long-term debt    
Face amount of debt instrument $ 1,000,000,000  
Discount to par (percent) 99.966%  
Interest rate (percent) 4.20%  
Long-term debt $ 676,000,000 676,000,000
$1,100 issued June 2022    
Long-term debt    
Face amount of debt instrument $ 1,100,000,000  
Discount to par (percent) 99.725%  
Interest rate (percent) 5.50%  
Long-term debt $ 1,098,000,000 1,098,000,000
$500 issued April 2025    
Long-term debt    
Face amount of debt instrument $ 500,000,000  
Discount to par (percent) 99.778%  
Interest rate (percent) 6.10%  
Long-term debt $ 499,000,000 499,000,000
$1,200 issued September 2011    
Long-term debt    
Face amount of debt instrument $ 1,200,000,000  
Discount to par (percent) 99.863%  
Interest rate (percent) 6.00%  
Long-term debt $ 1,199,000,000 1,199,000,000
Other borrowings at 1.47%-7.89%, due in fiscal years 2026-2036    
Long-term debt    
Other borrowings at 1.47%-7.89%, due in fiscal years 2026-2036 $ 814,000,000 $ 765,000,000
Other borrowings at 1.47%-7.89%, due in fiscal years 2026-2036 | Minimum    
Long-term debt    
Interest rate (percent) 1.47%  
Other borrowings at 1.47%-7.89%, due in fiscal years 2026-2036 | Maximum    
Long-term debt    
Interest rate (percent) 7.89%