v3.26.1
Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Oct. 31, 2025
Summary of Investment Holdings [Line Items]          
Expected amount of AOCI expected to be reclassified in the next 12 months $ 15   $ 15    
Measurement Alternative          
Summary of Investment Holdings [Line Items]          
Equity securities without readily determinable fair value, amount 73   73   $ 61
Unrealized gain (loss) on equity securities $ 0 $ 0 $ 0 $ 0